improve instrumentation of internal notifier

Materialize all claimable provinces into a view with a column for the
claim type. the `provinc` column contains duplicated rows but each row
contains a unique combination of province and claim type.

This makes it much easier to search possible conflicts, or to list the
availability of provinces.

.github/workflows/ci.yml

@@ -6,7 +6,7 @@ jobs:
     steps:
       - uses: actions/setup-go@v3
         with:
-          go-version: 1.19
+          go-version: 1.21
       - uses: actions/checkout@v3
       - name: "fmt"
         run: test -z $(go fmt ./...)
@@ -19,4 +19,4 @@ jobs:
           skip-build-cache: true
           args: --timeout 2m
       - name: test
-        run: go test ./...
+        run: go test ./...

Dockerfile

@@ -3,13 +3,13 @@ WORKDIR /app
 COPY . .
 RUN mkdir ./bin; go build -buildvcs=false -o ./bin ./cmd/...
 
-FROM ubuntu:22.04 as litestream
+FROM ubuntu:23.10 as litestream
 WORKDIR /download
 RUN apt update -y && apt install -y wget tar
 RUN wget https://github.com/benbjohnson/litestream/releases/download/v0.3.9/litestream-v0.3.9-linux-amd64.tar.gz; \
   tar -zxf litestream-v0.3.9-linux-amd64.tar.gz;
 
-FROM ubuntu:22.04
+FROM ubuntu:23.10
 WORKDIR /themis
 COPY --from=builder /app/bin/themis-server /usr/local/bin/themis-server
 COPY --from=litestream /download/litestream /usr/local/bin/litestream

README.md

@@ -7,7 +7,7 @@ Discord App to allow EU4 players to take claims on regions and provinces.
 ### Requirements
 
 To develop:
-- [Go](https://go.dev/) version 1.19 or higher installed locally
+- [Go](https://go.dev/) version 1.21 or higher installed locally
 - `sqlite3` installed locally (already ships by default on most OSes)
 
 To deploy:

absences.go

@@ -4,26 +4,54 @@ import (
 	"context"
 	"fmt"
 	"time"
+
+	"github.com/rs/zerolog/log"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/codes"
+	semconv "go.opentelemetry.io/otel/semconv/v1.24.0"
+	"go.opentelemetry.io/otel/trace"
 )
 
 func (s *Store) AddAbsence(ctx context.Context, session time.Time, userId string) error {
+	ctx, span := tracer.Start(ctx, "add_absence", trace.WithAttributes(
+		semconv.DBSystemSqlite,
+		semconv.DBSQLTable("absences"),
+		semconv.DBOperation("insert"),
+		attribute.String("user_id", userId),
+		attribute.String("session_date", session.Format(time.DateOnly)),
+	))
+	defer span.End()
+
 	if session.Weekday() != time.Monday {
+		log.Debug().Ctx(ctx).Msg(fmt.Sprintf("%s is not a monday", session))
+		span.RecordError(fmt.Errorf("%s is not a monday", session))
 		return fmt.Errorf("not a monday")
 	}
 
+	defer s.Audit(ctx, &AuditableEvent{
+		userId:    userId,
+		eventType: EventAbsence,
+	})
+
 	tx, err := s.db.Begin()
 	if err != nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "failed to begin transaction")
 		return fmt.Errorf("failed to begin transaction: %w", err)
 	}
 	defer tx.Commit() //nolint:errcheck
 
 	stmt, err := s.db.PrepareContext(ctx, "INSERT INTO absences (session_date, userid) VALUES (?, ?)")
 	if err != nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "failed to prepare absence query")
 		return fmt.Errorf("failed to prepare absence query: %w", err)
 	}
 
 	_, err = stmt.ExecContext(ctx, session.Format(time.DateOnly), userId)
 	if err != nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "failed to insert absence")
 		return fmt.Errorf("failed to insert absence: %w", err)
 	}
 
@@ -31,19 +59,34 @@ func (s *Store) AddAbsence(ctx context.Context, session time.Time, userId string
 }
 
 func (s *Store) GetAbsentees(ctx context.Context, session time.Time) ([]string, error) {
+	ctx, span := tracer.Start(ctx, "get_absentees", trace.WithAttributes(
+		semconv.DBSystemSqlite,
+		semconv.DBSQLTable("absences"),
+		semconv.DBOperation("select"),
+		attribute.String("session_date", session.Format(time.DateOnly)),
+	))
+	defer span.End()
+
+	log.Debug().Ctx(ctx).Time("session", session).Msg("getting list of absentees")
 	tx, err := s.db.Begin()
 	if err != nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "failed to begin transaction")
 		return nil, fmt.Errorf("failed to begin transaction: %w", err)
 	}
 	defer tx.Commit() //nolint:errcheck
 
 	stmt, err := s.db.PrepareContext(ctx, `SELECT userid FROM absences WHERE session_date = ?`)
 	if err != nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "failed to prepare query")
 		return nil, fmt.Errorf("failed to prepare query: %w", err)
 	}
 
 	rows, err := stmt.QueryContext(ctx, session.Format(time.DateOnly))
 	if err != nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "failed to execute query")
 		return nil, fmt.Errorf("failed to execute query: %w", err)
 	}
 
@@ -65,22 +108,38 @@ func (s *Store) GetAbsentees(ctx context.Context, session time.Time) ([]string,
 type Schedule map[string][]string
 
 func (s *Store) GetSchedule(ctx context.Context, from, to time.Time) (Schedule, error) {
+	ctx, span := tracer.Start(ctx, "get_schedule", trace.WithAttributes(
+		semconv.DBSystemSqlite,
+		semconv.DBSQLTable("absences"),
+		semconv.DBOperation("select"),
+		attribute.String("from", from.Format(time.DateOnly)),
+		attribute.String("to", to.Format(time.DateOnly)),
+	))
+	defer span.End()
+
+	log.Debug().Ctx(ctx).Time("from", from).Time("to", to).Msg("getting next sessions schedule")
 	schedule := make(Schedule)
 	initSchedule(schedule, from, to)
 
 	tx, err := s.db.Begin()
 	if err != nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "failed to begin transaction")
 		return nil, fmt.Errorf("failed to begin transaction: %w", err)
 	}
 	defer tx.Commit() //nolint:errcheck
 
 	stmt, err := s.db.PrepareContext(ctx, `SELECT session_date, userid FROM absences WHERE session_date BETWEEN ? AND ? ORDER BY session_date ASC`)
 	if err != nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "failed to prepare query")
 		return nil, fmt.Errorf("failed to prepare query: %w", err)
 	}
 
 	rows, err := stmt.QueryContext(ctx, from.Format(time.DateOnly), to.Format(time.DateOnly))
 	if err != nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "failed to execute query")
 		return nil, fmt.Errorf("failed to execute query: %w", err)
 	}
 
@@ -89,14 +148,12 @@ func (s *Store) GetSchedule(ctx context.Context, from, to time.Time) (Schedule,
 		var user string
 		err = rows.Scan(&date, &user)
 		if err != nil {
+			span.RecordError(err)
+			span.SetStatus(codes.Error, "failed to scan row")
 			return nil, fmt.Errorf("failed to scan row: %w", err)
 		}
 
-		if _, ok := schedule[date]; ok {
-			schedule[date] = append(schedule[date], user)
-		} else {
-			schedule[date] = []string{user}
-		}
+		schedule[date] = append(schedule[date], user)
 	}
 
 	return schedule, nil

absences_test.go

@@ -2,16 +2,20 @@ package themis
 
 import (
 	"context"
+	"database/sql"
 	"fmt"
 	"testing"
 	"time"
 
+	"github.com/rs/zerolog"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
 
 func TestAddAbsence(t *testing.T) {
-	store, err := NewStore(fmt.Sprintf(TEST_CONN_STRING_PATTERN, "TestAddAbsence"))
+	db, err := sql.Open("sqlite3", fmt.Sprintf(TEST_CONN_STRING_PATTERN, "TestAddAbsence"))
+	require.NoError(t, err)
+	store, err := NewStore(db, zerolog.Nop())
 	require.NoError(t, err)
 
 	now := NextMonday()
@@ -25,10 +29,15 @@ func TestAddAbsence(t *testing.T) {
 	absentees, err = store.GetAbsentees(context.TODO(), now)
 	assert.NoError(t, err)
 	assert.Equal(t, 1, len(absentees))
+
+	_, err = store.LastOf(context.TODO(), EventAbsence)
+	require.NoError(t, err)
 }
 
 func TestGetSchedule(t *testing.T) {
-	store, err := NewStore(fmt.Sprintf(TEST_CONN_STRING_PATTERN, "TestGetSchedule"))
+	db, err := sql.Open("sqlite3", fmt.Sprintf(TEST_CONN_STRING_PATTERN, "TestGetSchedule"))
+	require.NoError(t, err)
+	store, err := NewStore(db, zerolog.Nop())
 	require.NoError(t, err)
 
 	now := NextMonday()

audit_log.go

@@ -0,0 +1,148 @@
+package themis
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+	"time"
+
+	"github.com/rs/zerolog/log"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/codes"
+	semconv "go.opentelemetry.io/otel/semconv/v1.24.0"
+	"go.opentelemetry.io/otel/trace"
+)
+
+type EventType int
+
+const (
+	EventFlush EventType = iota
+	EventClaim
+	EventUnclaim
+	EventAbsence
+)
+
+func (et EventType) String() string {
+	switch et {
+	case EventFlush:
+		return "FLUSH"
+	case EventClaim:
+		return "CLAIM"
+	case EventUnclaim:
+		return "UNCLAIM"
+	case EventAbsence:
+		return "ABSENT"
+	default:
+		return ""
+	}
+}
+
+func EventTypeFromString(ev string) (EventType, error) {
+	switch ev {
+	case "FLUSH":
+		return EventFlush, nil
+	case "CLAIM":
+		return EventClaim, nil
+	case "UNCLAIM":
+		return EventUnclaim, nil
+	case "ABSENT":
+		return EventAbsence, nil
+	default:
+		return EventType(9999), fmt.Errorf("no such event type: %s", ev)
+	}
+}
+
+type AuditableEvent struct {
+	userId    string
+	eventType EventType
+	err       error
+}
+
+// Audit writes to the audit table, returns nothing because it is meant to be
+// used in a defered statement on functions that write to the database.
+func (s *Store) Audit(ctx context.Context, ev *AuditableEvent) {
+	ctx, span := tracer.Start(ctx, "audit", trace.WithAttributes(
+		semconv.DBSystemSqlite,
+		semconv.DBSQLTable("audit_log"),
+		semconv.DBOperation("insert"),
+		attribute.String("user_id", ev.userId),
+		attribute.Stringer("event_type", ev.eventType),
+	))
+	defer span.End()
+
+	if ev.err == nil {
+		log.Debug().Ctx(ctx).Str("event_type", ev.eventType.String()).Str("userid", ev.userId).Msg("recording audit log")
+		ctx := context.Background()
+
+		tx, err := s.db.Begin()
+		if err != nil {
+			span.RecordError(err)
+			span.SetStatus(codes.Error, "failed to start transaction")
+			log.Error().Ctx(ctx).Err(err).Msg("failed to start transaction")
+		}
+		defer tx.Commit() //nolint:errcheck
+
+		stmt, err := s.db.PrepareContext(ctx, "INSERT INTO audit_log (userid, event_type, ts) VALUES (?, ?, ?)")
+		if err != nil {
+			span.RecordError(err)
+			span.SetStatus(codes.Error, "failed to prepare audit log insert")
+			log.Error().Ctx(ctx).Err(err).Msg("failed to prepare audit log insert")
+		}
+
+		if _, err := stmt.ExecContext(ctx, ev.userId, ev.eventType.String(), time.Now()); err != nil {
+			span.RecordError(err)
+			span.SetStatus(codes.Error, "failed to insert audit log")
+			log.Error().Ctx(ctx).Err(err).Msg("failed to insert audit log")
+		}
+	}
+}
+
+type AuditEvent struct {
+	Id        int
+	UserId    string
+	EventType EventType
+	Timestamp time.Time
+}
+
+func (s *Store) LastOf(ctx context.Context, t EventType) (AuditEvent, error) {
+	ctx, span := tracer.Start(ctx, "find_last_audit_log", trace.WithAttributes(
+		semconv.DBSystemSqlite,
+		semconv.DBSQLTable("audit_log"),
+		semconv.DBOperation("select"),
+		attribute.Stringer("event_type", t),
+	))
+	defer span.End()
+
+	log.Debug().Ctx(ctx).Str("event_type", t.String()).Msg("finding last audit log")
+
+	stmt, err := s.db.PrepareContext(ctx, `SELECT id, userid, event_type, ts FROM audit_log WHERE event_type = ? ORDER BY ts DESC LIMIT 1`)
+	if err != nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "failed to get last event")
+		return AuditEvent{}, fmt.Errorf("failed to get last event of type %s: %w", t.String(), err)
+	}
+
+	row := stmt.QueryRowContext(ctx, t.String())
+
+	ev := AuditEvent{}
+	var rawEventType string
+	err = row.Scan(&ev.Id, &ev.UserId, &rawEventType, &ev.Timestamp)
+	if err == sql.ErrNoRows {
+		span.RecordError(ErrNever)
+		return AuditEvent{}, ErrNever
+	}
+	if err != nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "failed to scan row")
+		return AuditEvent{}, fmt.Errorf("failed to scan row: %w", err)
+	}
+
+	ev.EventType, err = EventTypeFromString(rawEventType)
+	if err != nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "failed to parse event type")
+		return AuditEvent{}, fmt.Errorf("failed to parse event type: %w", err)
+	}
+
+	return ev, nil
+}

claim_type.go

@@ -34,12 +34,6 @@ const (
 	CLAIM_TYPE_TRADE  = "trade"
 )
 
-var claimTypeToColumn = map[ClaimType]string{
-	CLAIM_TYPE_AREA:   "area",
-	CLAIM_TYPE_REGION: "region",
-	CLAIM_TYPE_TRADE:  "trade_node",
-}
-
 type Claim struct {
 	ID     int
 	Player string

cmd/themis-server/main.go

@@ -7,8 +7,10 @@ import (
 	"flag"
 	"fmt"
 	"net/http"
+	"net/url"
 	"os"
 	"os/signal"
+	"runtime/pprof"
 	"sort"
 	"strconv"
 	"strings"
@@ -17,9 +19,21 @@ import (
 
 	"github.com/bwmarrin/discordgo"
 	_ "github.com/mattn/go-sqlite3"
+	"github.com/rs/zerolog"
 	"github.com/rs/zerolog/log"
+	"go.opentelemetry.io/otel"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/codes"
+	"go.opentelemetry.io/otel/propagation"
+	"go.opentelemetry.io/otel/sdk/resource"
+	sdktrace "go.opentelemetry.io/otel/sdk/trace"
+	semconv "go.opentelemetry.io/otel/semconv/v1.24.0"
+	"go.opentelemetry.io/otel/trace"
+	"go.wperron.io/flydetector"
+	"go.wperron.io/sqliteexporter"
 
 	"go.wperron.io/themis"
+	"go.wperron.io/themis/correlation"
 )
 
 const (
@@ -27,19 +41,52 @@ const (
 )
 
 var (
-	dbFile = flag.String("db", "", "SQlite database file path")
+	dbFile     = flag.String("db", "", "SQlite database file path.")
+	debug      = flag.Bool("debug", false, "Set log level to DEBUG.")
+	cpuProfile = flag.String("cpuprofile", "", "Output file for pprof profiling.")
 
-	store *themis.Store
+	store      *themis.Store
+	tracer     trace.Tracer
+	propagator = propagation.TraceContext{}
 )
 
-type Handler func(s *discordgo.Session, i *discordgo.InteractionCreate)
+type Handler func(ctx context.Context, s *discordgo.Session, i *discordgo.InteractionCreate) error
 
 func main() {
+	log.Info().Msg("startup.")
+	start := time.Now()
+
 	ctx, cancel := signal.NotifyContext(context.Background(), syscall.SIGTERM, syscall.SIGKILL, syscall.SIGINT)
 	defer cancel()
 
 	flag.Parse()
 
+	zerolog.SetGlobalLevel(zerolog.InfoLevel)
+	if *debug {
+		zerolog.SetGlobalLevel(zerolog.DebugLevel)
+	}
+	log.Logger = log.Output(zerolog.ConsoleWriter{Out: os.Stdout})
+	log.Logger = log.Logger.Hook(correlation.TraceContextHook{})
+	zerolog.DurationFieldUnit = time.Millisecond
+
+	if *cpuProfile != "" && os.Getenv("ENV") != "production" {
+		log.Info().Str("file", *cpuProfile).Msg("starting profiler")
+
+		f, err := os.Create(*cpuProfile)
+		if err != nil {
+			log.Fatal().Err(err).Msg("failed to create cpu profile output file")
+		}
+		_ = pprof.StartCPUProfile(f)
+		defer pprof.StopCPUProfile()
+	}
+
+	go func() {
+		if err := serve(":8080"); err != nil {
+			log.Error().Err(err).Msg("failed to serve requests")
+		}
+		cancel()
+	}()
+
 	err := touchDbFile(*dbFile)
 	if err != nil {
 		log.Fatal().Err(err).Msg("failed to touch database file")
@@ -47,13 +94,23 @@ func main() {
 
 	connString := fmt.Sprintf(CONN_STRING_PATTERN, *dbFile)
 
-	store, err = themis.NewStore(connString)
+	log.Debug().Str("connection_string", connString).Msg("opening sqlite3 database")
+	db, err := sql.Open("sqlite3", connString)
+	if err != nil {
+		log.Fatal().Err(err).Msg("failed to open database")
+	}
+
+	store, err = themis.NewStore(db, log.Logger)
 	if err != nil {
 		log.Fatal().Err(err).Msg("failed to initialize database")
 	}
 	defer store.Close()
 
-	notifChan := make(chan struct{})
+	if err := initTracing(ctx, db); err != nil {
+		log.Fatal().Err(err).Msg("failed to initialize tracing")
+	}
+
+	notifChan := make(chan context.Context)
 	notifier := themis.NewNotifier(notifChan)
 	go notifier.Start(ctx)
 
@@ -169,6 +226,12 @@ func main() {
 			Description: "Get the schedule for the following weeks.",
 			Type:        discordgo.ChatApplicationCommand,
 		},
+		{
+			Name:                     "send-schedule",
+			Description:              "Trigger the scheduled message. Admins only",
+			Type:                     discordgo.ChatApplicationCommand,
+			DefaultMemberPermissions: new(int64), // default 0 == admins only
+		},
 		{
 			Name:        "absent",
 			Description: "Mark yourself as absent for a session",
@@ -184,10 +247,9 @@ func main() {
 		},
 	}
 	handlers := map[string]Handler{
-		"info": func(s *discordgo.Session, i *discordgo.InteractionCreate) {
-			uptime, err := themis.Uptime()
+		"info": func(ctx context.Context, s *discordgo.Session, i *discordgo.InteractionCreate) error {
+			uptime, err := themis.Uptime(ctx)
 			if err != nil {
-				log.Error().Err(err).Msg("failed to get server uptime")
 				err := s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
 					Type: discordgo.InteractionResponseChannelMessageWithSource,
 					Data: &discordgo.InteractionResponseData{
@@ -195,13 +257,13 @@ func main() {
 					},
 				})
 				if err != nil {
-					log.Error().Err(err).Msg("failed to respond to interaction")
+					return fmt.Errorf("failed to respond to interaction: %w", err)
 				}
+				return fmt.Errorf("failed to get server uptime: %w", err)
 			}
 
 			claimCount, uniquePlayers, err := store.CountClaims(ctx)
 			if err != nil {
-				log.Error().Err(err).Msg("failed to count claims")
 				err := s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
 					Type: discordgo.InteractionResponseChannelMessageWithSource,
 					Data: &discordgo.InteractionResponseData{
@@ -209,24 +271,45 @@ func main() {
 					},
 				})
 				if err != nil {
-					log.Error().Err(err).Msg("failed to respond to interaction")
+					return fmt.Errorf("failed to respond to interaction: %w", err)
 				}
+				return fmt.Errorf("failed to count claims: %w", err)
+			}
+
+			ev, err := store.LastOf(ctx, themis.EventFlush)
+			var lastFlush string
+			if err != nil {
+				if err != themis.ErrNever {
+					err := s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
+						Type: discordgo.InteractionResponseChannelMessageWithSource,
+						Data: &discordgo.InteractionResponseData{
+							Content: "Oops, something went wrong! :(",
+						},
+					})
+					if err != nil {
+						return fmt.Errorf("failed to respond to interaction: %w", err)
+					}
+					return fmt.Errorf("failed get last flush event: %w", err)
+				}
+				lastFlush = "never"
+			} else {
+				lastFlush = ev.Timestamp.Format(time.DateTime)
 			}
 
 			err = s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
 				Type: discordgo.InteractionResponseChannelMessageWithSource,
 				Data: &discordgo.InteractionResponseData{
-					Content: fmt.Sprintf("Server has been up for %s, has %d claims from %d unique players", uptime, claimCount, uniquePlayers),
+					Content: fmt.Sprintf("Server has been up for %s, has %d claims from %d unique players.\nThe last time claims were flushed was: %s.", uptime, claimCount, uniquePlayers, lastFlush),
 				},
 			})
 			if err != nil {
-				log.Error().Err(err).Msg("failed to respond to interaction")
+				return fmt.Errorf("failed to respond to interaction: %w", err)
 			}
+			return nil
 		},
-		"list-claims": func(s *discordgo.Session, i *discordgo.InteractionCreate) {
+		"list-claims": func(ctx context.Context, s *discordgo.Session, i *discordgo.InteractionCreate) error {
 			claims, err := store.ListClaims(ctx)
 			if err != nil {
-				log.Error().Err(err).Msg("failed to list claims")
 				err := s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
 					Type: discordgo.InteractionResponseChannelMessageWithSource,
 					Data: &discordgo.InteractionResponseData{
@@ -234,8 +317,9 @@ func main() {
 					},
 				})
 				if err != nil {
-					log.Error().Err(err).Msg("failed to respond to interaction")
+					return fmt.Errorf("failed to respond to interaction: %w", err)
 				}
+				return fmt.Errorf("failed to list claims: %w", err)
 			}
 
 			sb := strings.Builder{}
@@ -251,13 +335,16 @@ func main() {
 				},
 			})
 			if err != nil {
-				log.Error().Err(err).Msg("failed to respond to interaction")
+				return fmt.Errorf("failed to respond to interaction: %w", err)
 			}
+			return nil
 		},
-		"claim": func(s *discordgo.Session, i *discordgo.InteractionCreate) {
+		"claim": func(ctx context.Context, s *discordgo.Session, i *discordgo.InteractionCreate) error {
 			if i.Type == discordgo.InteractionApplicationCommandAutocomplete {
+				log.Debug().Ctx(ctx).Msg("command type interaction autocomplete")
+				// TODO(wperron) fix this
 				handleClaimAutocomplete(ctx, store, s, i)
-				return
+				return nil
 			}
 
 			opts := i.ApplicationCommandData().Options
@@ -265,28 +352,29 @@ func main() {
 				err = s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
 					Type: discordgo.InteractionResponseChannelMessageWithSource,
 					Data: &discordgo.InteractionResponseData{
+						Flags:   discordgo.MessageFlagsEphemeral,
 						Content: "`claim-type` and `name` are mandatory parameters",
 					},
 				})
 				if err != nil {
-					log.Error().Err(err).Msg("failed to respond to interaction")
+					return fmt.Errorf("failed to respond to interaction: %w", err)
 				}
-				return
+				return nil
 			}
 
 			claimType, err := themis.ClaimTypeFromString(opts[0].StringValue())
 			if err != nil {
-				log.Error().Err(err).Str("claim_type", opts[0].StringValue()).Msg("failed to parse claim")
 				err = s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
 					Type: discordgo.InteractionResponseChannelMessageWithSource,
 					Data: &discordgo.InteractionResponseData{
+						Flags:   discordgo.MessageFlagsEphemeral,
 						Content: "You can only take claims of types `area`, `region` or `trade`",
 					},
 				})
 				if err != nil {
-					log.Error().Err(err).Msg("failed to respond to interaction")
+					return fmt.Errorf("failed to respond to interaction: %w", err)
 				}
-				return
+				return fmt.Errorf("failed to parse claim: %w", err)
 			}
 			name := opts[1].StringValue()
 
@@ -299,6 +387,7 @@ func main() {
 
 			_, err = store.Claim(ctx, userId, player, name, claimType)
 			if err != nil {
+				// TODO(wperron) fix this error cast
 				conflict, ok := err.(themis.ErrConflict)
 				if ok {
 					sb := strings.Builder{}
@@ -311,26 +400,27 @@ func main() {
 					err = s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
 						Type: discordgo.InteractionResponseChannelMessageWithSource,
 						Data: &discordgo.InteractionResponseData{
+							Flags:   discordgo.MessageFlagsEphemeral,
 							Content: sb.String(),
 						},
 					})
 					if err != nil {
-						log.Error().Err(err).Msg("failed to respond to interaction")
+						return fmt.Errorf("failed to respond to interaction")
 					}
-					return
+					return nil
 				}
 
-				log.Error().Err(err).Msg("failed to acquire claim")
 				err = s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
 					Type: discordgo.InteractionResponseChannelMessageWithSource,
 					Data: &discordgo.InteractionResponseData{
+						Flags:   discordgo.MessageFlagsEphemeral,
 						Content: "failed to acquire claim :(",
 					},
 				})
 				if err != nil {
-					log.Error().Err(err).Msg("failed to respond to interaction")
+					return fmt.Errorf("failed to respond to interaction: %w", err)
 				}
-				return
+				return fmt.Errorf("failed to acquire claim: %w", err)
 			}
 
 			err = s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
@@ -340,14 +430,14 @@ func main() {
 				},
 			})
 			if err != nil {
-				log.Error().Err(err).Msg("failed to respond to interaction")
+				return fmt.Errorf("failed to respond to interaction: %w", err)
 			}
+			return nil
 		},
-		"describe-claim": func(s *discordgo.Session, i *discordgo.InteractionCreate) {
+		"describe-claim": func(ctx context.Context, s *discordgo.Session, i *discordgo.InteractionCreate) error {
 			id := i.ApplicationCommandData().Options[0]
 			detail, err := store.DescribeClaim(ctx, int(id.IntValue()))
 			if err != nil {
-				log.Error().Err(err).Msg("failed to describe claim")
 				err = s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
 					Type: discordgo.InteractionResponseChannelMessageWithSource,
 					Data: &discordgo.InteractionResponseData{
@@ -355,14 +445,15 @@ func main() {
 					},
 				})
 				if err != nil {
-					log.Error().Err(err).Msg("failed to respond to interaction")
+					return fmt.Errorf("failed to respond to interaction: %w", err)
 				}
+				return fmt.Errorf("failed to describe claim: %w", err)
 			}
 
 			sb := strings.Builder{}
 			sb.WriteString(fmt.Sprintf("#%d %s %s (%s)\n", detail.ID, detail.Name, detail.Type, detail.Player))
 			for _, p := range detail.Provinces {
-				sb.WriteString(fmt.Sprintf(" - %s\n", p))
+				sb.WriteString(fmt.Sprintf("- %s\n", p))
 			}
 
 			err = s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
@@ -372,19 +463,19 @@ func main() {
 				},
 			})
 			if err != nil {
-				log.Error().Err(err).Msg("failed to respond to interaction")
+				return fmt.Errorf("failed to respond to interaction: %w", err)
 			}
+			return nil
 		},
-		"delete-claim": func(s *discordgo.Session, i *discordgo.InteractionCreate) {
+		"delete-claim": func(ctx context.Context, s *discordgo.Session, i *discordgo.InteractionCreate) error {
 			id := i.ApplicationCommandData().Options[0]
 			userId := i.Member.User.ID
 			err := store.DeleteClaim(ctx, int(id.IntValue()), userId)
 			if err != nil {
-				msg := "Oops, something went wrong :( blame @wperron"
+				msg := "Oops, something went wrong :( blame <@wperron>"
 				if errors.Is(err, themis.ErrNoSuchClaim) {
 					msg = fmt.Sprintf("Claim #%d not found for %s", id.IntValue(), i.Member.Nick)
 				}
-				log.Error().Err(err).Msg("failed to delete claim")
 				err = s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
 					Type: discordgo.InteractionResponseChannelMessageWithSource,
 					Data: &discordgo.InteractionResponseData{
@@ -392,29 +483,48 @@ func main() {
 					},
 				})
 				if err != nil {
-					log.Error().Err(err).Msg("failed to respond to interaction")
+					return fmt.Errorf("failed to respond to interaction: %w", err)
 				}
+
+				return fmt.Errorf("failed to delete claim: %w", err)
 			}
 
 			err = s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
 				Type: discordgo.InteractionResponseChannelMessageWithSource,
 				Data: &discordgo.InteractionResponseData{
+					Flags:   discordgo.MessageFlagsEphemeral,
 					Content: "Got it chief.",
 				},
 			})
 			if err != nil {
-				log.Error().Err(err).Msg("failed to respond to interaction")
+				return fmt.Errorf("failed to respond to interaction: %w", err)
 			}
+			return nil
 		},
-		"flush": func(s *discordgo.Session, i *discordgo.InteractionCreate) {
+		"flush": func(ctx context.Context, s *discordgo.Session, i *discordgo.InteractionCreate) error {
+			baggage := make(url.Values)
+			propagator.Inject(ctx, correlation.UrlValuesCarrier(baggage))
+
+			sb := strings.Builder{}
+			sb.WriteString("modal_flush")
+			if len(baggage) != 0 {
+				sb.WriteRune(':')
+				sb.WriteString(baggage.Encode())
+			}
+
 			if err := s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
 				Type: discordgo.InteractionResponseModal,
 				Data: &discordgo.InteractionResponseData{
-					CustomID: "modals_flush_" + i.Interaction.Member.User.ID,
+					CustomID: sb.String(),
 					Title:    "Are you sure?",
 					Components: []discordgo.MessageComponent{
 						discordgo.ActionsRow{
 							Components: []discordgo.MessageComponent{
+								// Note: Currently, Discord *requires* modal have at least one field present, it's not
+								// possible to simply have a cancel/confirm box. That is why this modal uses an old
+								// school [y/N] confirmation.
+								//
+								// source: https://stackoverflow.com/questions/71874810/discord-modals-without-textinputcomponent-but-a-text-and-button-only#answer-74317739
 								discordgo.TextInput{
 									CustomID:    "confirmation",
 									Label:       "Delete all claims permanently? [y/N]",
@@ -430,13 +540,14 @@ func main() {
 					},
 				},
 			}); err != nil {
-				log.Error().Err(err).Msg("failed to respond to interaction")
+				return fmt.Errorf("failed to respond to interaction: %w", err)
 			}
+			return nil
 		},
-		"query": func(s *discordgo.Session, i *discordgo.InteractionCreate) {
+		"query": func(ctx context.Context, s *discordgo.Session, i *discordgo.InteractionCreate) error {
 			roDB, err := sql.Open("sqlite3", fmt.Sprintf("file:%s?cache=private&mode=ro", *dbFile))
 			if err != nil {
-				log.Error().Err(err).Msg("failed to open read-only copy of databse")
+				return fmt.Errorf("failed to open read-only copy of database: %w", err)
 			}
 
 			q := i.ApplicationCommandData().Options[0].StringValue()
@@ -444,13 +555,12 @@ func main() {
 			defer cancelDeadline()
 			rows, err := roDB.QueryContext(deadlined, q)
 			if err != nil {
-				log.Error().Err(err).Msg("failed to exec user-provided query")
-				return
+				return fmt.Errorf("faied to exec user-provided query: %w", err)
 			}
 
-			fmtd, err := themis.FormatRows(rows)
+			fmtd, err := themis.FormatRows(ctx, rows)
 			if err != nil {
-				log.Error().Err(err).Msg("failed to format rows")
+				return fmt.Errorf("failed to format rows: %w", err)
 			}
 
 			// 2000 is a magic number here, it's the character limit for a discord
@@ -464,22 +574,24 @@ func main() {
 					Content: table,
 				},
 			}); err != nil {
-				log.Error().Err(err).Msg("failed to respond to interaction")
+				log.Error().Ctx(ctx).Err(err).Msg("failed to respond to interaction")
+				return fmt.Errorf("failed to respond to interaction: %w", err)
 			}
+			return nil
 		},
-		"schedule": func(s *discordgo.Session, i *discordgo.InteractionCreate) {
+		"schedule": func(ctx context.Context, s *discordgo.Session, i *discordgo.InteractionCreate) error {
 			// get schedule from now to 4 mondays into the future
 			sched, err := store.GetSchedule(ctx, themis.NextMonday(), themis.NextMonday().Add(4*7*24*time.Hour))
 			if err != nil {
-				log.Error().Err(err).Msg("failed to get schedule")
 				if err := s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
 					Type: discordgo.InteractionResponseChannelMessageWithSource,
 					Data: &discordgo.InteractionResponseData{
 						Content: "failed to get schedule, check logs for more info.",
 					},
 				}); err != nil {
-					log.Error().Err(err).Msg("failed to respond to interaction")
+					return fmt.Errorf("failed to respond to interaction: %w", err)
 				}
+				return fmt.Errorf("failed to get schedule: %w", err)
 			}
 
 			sb := strings.Builder{}
@@ -508,10 +620,27 @@ func main() {
 					Content: sb.String(),
 				},
 			}); err != nil {
-				log.Error().Err(err).Msg("failed to respond to interaction")
+				log.Error().Ctx(ctx).Err(err).Msg("failed to respond to interaction")
+				return fmt.Errorf("failed to respond to interaction: %w", err)
 			}
+			return nil
 		},
-		"absent": func(s *discordgo.Session, i *discordgo.InteractionCreate) {
+		"send-schedule": func(ctx context.Context, s *discordgo.Session, i *discordgo.InteractionCreate) error {
+			notifier.Send(ctx)
+
+			if err := s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
+				Type: discordgo.InteractionResponseChannelMessageWithSource,
+				Data: &discordgo.InteractionResponseData{
+					Flags:   discordgo.MessageFlagsEphemeral,
+					Content: "Done.",
+				},
+			}); err != nil {
+				log.Error().Ctx(ctx).Err(err).Msg("failed to respond to interaction")
+				return fmt.Errorf("failed to respond to interaction: %w", err)
+			}
+			return nil
+		},
+		"absent": func(ctx context.Context, s *discordgo.Session, i *discordgo.InteractionCreate) error {
 			var rawDate string
 			if len(i.ApplicationCommandData().Options) == 0 {
 				rawDate = themis.NextMonday().Format(time.DateOnly)
@@ -524,34 +653,40 @@ func main() {
 				if err := s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
 					Type: discordgo.InteractionResponseChannelMessageWithSource,
 					Data: &discordgo.InteractionResponseData{
+						Flags:   discordgo.MessageFlagsEphemeral,
 						Content: "failed to parse provided date, make sure to use the YYYY-MM-DD format.",
 					},
 				}); err != nil {
-					log.Error().Err(err).Msg("failed to respond to interaction")
+					return fmt.Errorf("failed to respond to interaction: %w", err)
 				}
+				return nil
 			}
 
 			if date.Before(time.Now()) {
 				if err := s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
 					Type: discordgo.InteractionResponseChannelMessageWithSource,
 					Data: &discordgo.InteractionResponseData{
+						Flags:   discordgo.MessageFlagsEphemeral,
 						Content: "The date must be some time in the future.",
 					},
 				}); err != nil {
-					log.Error().Err(err).Msg("failed to respond to interaction")
+					return fmt.Errorf("failed to respond to interaction: %w", err)
 				}
+				return nil
 			}
 
 			if date.Weekday() != time.Monday {
 				if err := s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
 					Type: discordgo.InteractionResponseChannelMessageWithSource,
 					Data: &discordgo.InteractionResponseData{
+						Flags:   discordgo.MessageFlagsEphemeral,
 						Content: "The date you provided is not a Monday.",
 					},
 				}); err != nil {
-					log.Error().Err(err).Msg("failed to respond to interaction")
+					return fmt.Errorf("failed to respond to interaction: %w", err)
 				}
 				// TODO(wperron) suggest Mondays before and after?
+				return nil
 			}
 
 			userId := i.Member.User.ID
@@ -562,19 +697,22 @@ func main() {
 						Content: "something went wrong recording your absence, check logs for more info.",
 					},
 				}); err != nil {
-					log.Error().Err(err).Msg("failed to respond to interaction")
+					return fmt.Errorf("failed to respond to interaction: %w", err)
 				}
+				return fmt.Errorf("failed to record absence: %w", err)
 			}
 
 			err = s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
 				Type: discordgo.InteractionResponseChannelMessageWithSource,
 				Data: &discordgo.InteractionResponseData{
+					Flags:   discordgo.MessageFlagsEphemeral,
 					Content: "Okey dokey.",
 				},
 			})
 			if err != nil {
-				log.Error().Err(err).Msg("failed to respond to interaction")
+				return fmt.Errorf("failed to respond to interaction: %w", err)
 			}
+			return nil
 		},
 	}
 
@@ -586,25 +724,21 @@ func main() {
 	}
 	defer discord.Close()
 
-	registeredCommands := make([]*discordgo.ApplicationCommand, len(commands))
-	for i, c := range commands {
-		command, err := discord.ApplicationCommandCreate(appId, guildId, c)
-		if err != nil {
-			log.Fatal().Err(err).Msg("failed to register command")
-		}
-		registeredCommands[i] = command
+	log.Debug().Int("count", len(commands)).Msg("registering commands via bulk overwrite")
+	created, err := discord.ApplicationCommandBulkOverwrite(appId, guildId, commands)
+	if err != nil {
+		log.Fatal().Err(err).Msg("failed to register commands with discord")
 	}
+	log.Info().Int("count", len(created)).Dur("startup_latency_ms", time.Since(start)).Msg("registered commands, ready to operate")
 
-	log.Info().Int("count", len(registeredCommands)).Msg("registered commands")
+	go notifier.NotifyFunc(ctx, func(ctx context.Context) {
+		ctx, cancel := context.WithTimeout(ctx, 5*time.Second)
+		defer cancel()
 
-	go func() {
-		if err := serve(":8080"); err != nil {
-			log.Error().Err(err).Msg("failed to serve requests")
-		}
-		cancel()
-	}()
+		ctx, span := tracer.Start(ctx, "weekly_notification")
+		defer span.End()
 
-	go notifier.NotifyFunc(ctx, func() {
+		log.Info().Msg("sending weekly reminder")
 		absentees, err := store.GetAbsentees(ctx, themis.NextMonday())
 		if err != nil {
 			log.Error().Err(err).Msg("failed to get absentees for next session")
@@ -617,13 +751,32 @@ func main() {
 		}
 
 		var msg string
+		var components []discordgo.MessageComponent
 		if len(absentees) == 0 {
-			msg = "Everybody can make it next Monday, see you then!"
+			msg = "Everybody can make it next Monday, see you then! 🎉"
+			components = []discordgo.MessageComponent{
+				discordgo.ActionsRow{
+					Components: []discordgo.MessageComponent{
+						discordgo.Button{
+							CustomID: "schedule-response",
+							Label:    "I Can't Make It",
+							Style:    discordgo.DangerButton,
+							Disabled: false,
+							Emoji: discordgo.ComponentEmoji{
+								Name: "🙁",
+							},
+						},
+					},
+				},
+			}
 		} else {
-			msg = fmt.Sprintf("%s can't make it next Monday. :sad:", themis.FormatStringSlice(absentees))
+			msg = fmt.Sprintf("%s can't make it next Monday. 🙁", themis.FormatStringSlice(absentees))
 		}
 
-		_, err = discord.ChannelMessageSend(channelId, msg)
+		_, err = discord.ChannelMessageSendComplex(channelId, &discordgo.MessageSend{
+			Content:    msg,
+			Components: components,
+		})
 		if err != nil {
 			log.Error().Err(err).Msg("failed to send scheduled notification")
 		}
@@ -631,18 +784,11 @@ func main() {
 
 	<-ctx.Done()
 	log.Info().Msg("context cancelled, exiting")
-
-	for _, c := range registeredCommands {
-		err = discord.ApplicationCommandDelete(appId, guildId, c.ID)
-		if err != nil {
-			log.Error().Err(err).Msg("failed to deregister commands")
-		}
-	}
-	log.Info().Msg("deregistered commands, exiting")
-	os.Exit(0)
+	store.Close()
 }
 
 func touchDbFile(path string) error {
+	log.Debug().Str("path", path).Msg("touching database file")
 	f, err := os.Open(path)
 	if err != nil {
 		if errors.Is(err, os.ErrNotExist) {
@@ -667,18 +813,34 @@ func registerHandlers(sess *discordgo.Session, handlers map[string]Handler) {
 	sess.AddHandler(func(s *discordgo.Session, i *discordgo.InteractionCreate) {
 		switch i.Type {
 		case discordgo.InteractionApplicationCommand:
+			ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+			defer cancel()
+
 			if h, ok := handlers[i.ApplicationCommandData().Name]; ok {
-				h(s, i)
+				_ = inSpan(i.ApplicationCommandData().Name, withLogging(i.ApplicationCommandData().Name, h))(ctx, s, i)
 			}
 		case discordgo.InteractionModalSubmit:
-			if strings.HasPrefix(i.ModalSubmitData().CustomID, "modals_flush_") {
+			ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+			defer cancel()
+
+			state, err := parseCustomIDState(i.ModalSubmitData().CustomID)
+			if err != nil {
+				log.Error().Ctx(ctx).Err(err).Msg("unexpected error occurred while parsing state from custom id, returning early.")
+				return
+			}
+
+			ctx = propagator.Extract(ctx, correlation.UrlValuesCarrier(state))
+
+			if strings.HasPrefix(i.ModalSubmitData().CustomID, "modal_flush") {
 				sub := i.ModalSubmitData().Components[0].(*discordgo.ActionsRow).Components[0].(*discordgo.TextInput).Value
 				sub = strings.ToLower(sub)
+				log.Debug().Ctx(ctx).Str("value", sub).Msg("flush modal submitted")
+
 				if sub == "y" || sub == "ye" || sub == "yes" {
-					err := store.Flush(context.Background())
+					err := store.Flush(ctx, i.Member.User.ID)
 					msg := "Flushed all claims!"
 					if err != nil {
-						log.Error().Err(err).Msg("failed to flush claims")
+						log.Error().Ctx(ctx).Err(err).Msg("failed to flush claims")
 						msg = "failed to flush claims from database"
 					}
 
@@ -689,7 +851,7 @@ func registerHandlers(sess *discordgo.Session, handlers map[string]Handler) {
 						},
 					})
 					if err != nil {
-						log.Error().Err(err).Msg("failed to respond to interaction")
+						log.Error().Ctx(ctx).Err(err).Msg("failed to respond to interaction")
 					}
 					return
 				}
@@ -701,10 +863,49 @@ func registerHandlers(sess *discordgo.Session, handlers map[string]Handler) {
 					},
 				})
 				if err != nil {
-					log.Error().Err(err).Msg("failed to respond to interaction")
+					log.Error().Ctx(ctx).Err(err).Msg("failed to respond to interaction")
 				}
 				return
 			}
+		case discordgo.InteractionMessageComponent:
+			ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+			defer cancel()
+
+			state, err := parseCustomIDState(i.MessageComponentData().CustomID)
+			if err != nil {
+				log.Error().Ctx(ctx).Err(err).Msg("unexpected error occured while parsing state from custom id, returning early.")
+				return
+			}
+
+			ctx = propagator.Extract(ctx, correlation.UrlValuesCarrier(state))
+
+			switch i.MessageComponentData().CustomID {
+			case "schedule-response":
+				userId := i.Member.User.ID
+				log.Info().Ctx(ctx).Str("message_component", "schedule-response").Str("userid", userId).Msg("handling message component interaction")
+
+				if err := store.AddAbsence(ctx, themis.NextMonday(), userId); err != nil {
+					if err := s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
+						Type: discordgo.InteractionResponseChannelMessageWithSource,
+						Data: &discordgo.InteractionResponseData{
+							Content: "something went wrong recording your absence, check logs for more info.",
+						},
+					}); err != nil {
+						log.Error().Err(err).Msg("failed to respond to interaction")
+					}
+					return
+				}
+
+				err := s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
+					Type: discordgo.InteractionResponseChannelMessageWithSource,
+					Data: &discordgo.InteractionResponseData{
+						Content: fmt.Sprintf("Looks like <@%s> can't make it after all.", userId),
+					},
+				})
+				if err != nil {
+					log.Error().Err(err).Msg("failed to respond to interaction")
+				}
+			}
 		}
 	})
 }
@@ -741,6 +942,7 @@ func formatClaimsTable(claims []themis.Claim) string {
 }
 
 func handleClaimAutocomplete(ctx context.Context, store *themis.Store, s *discordgo.Session, i *discordgo.InteractionCreate) {
+	log.Debug().Msg("getting autocomplete data for claim")
 	opts := i.ApplicationCommandData().Options
 	claimType, err := themis.ClaimTypeFromString(opts[0].StringValue())
 	if err != nil {
@@ -762,6 +964,8 @@ func handleClaimAutocomplete(ctx context.Context, store *themis.Store, s *discor
 		})
 	}
 
+	log.Debug().Int("len", len(choices)).Msg("found autocomplete suggestions")
+
 	if err := s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
 		Type: discordgo.InteractionApplicationCommandAutocompleteResult,
 		Data: &discordgo.InteractionResponseData{
@@ -780,9 +984,108 @@ func serve(address string) error {
 	return http.ListenAndServe(address, nil)
 }
 
+func inSpan(name string, h Handler) Handler {
+	return func(ctx context.Context, s *discordgo.Session, i *discordgo.InteractionCreate) error {
+		ctx, span := tracer.Start(ctx, fmt.Sprintf("discord_command %s", name))
+		defer span.End()
+
+		return h(ctx, s, i)
+	}
+}
+
+func withLogging(name string, h Handler) Handler {
+	return func(ctx context.Context, s *discordgo.Session, i *discordgo.InteractionCreate) error {
+		start := time.Now()
+		logCommandInvocation(ctx, name, s, i)
+		err := h(ctx, s, i)
+		debugCommandCompletion(ctx, name, time.Since(start), err, s, i)
+		return nil
+	}
+}
+
+func logCommandInvocation(ctx context.Context, name string, s *discordgo.Session, i *discordgo.InteractionCreate) {
+	span := trace.SpanFromContext(ctx)
+	span.SetAttributes(
+		attribute.String("user_id", i.Member.User.ID),
+		attribute.String("username", i.Member.User.Username),
+		attribute.String("command_name", name),
+	)
+
+	for _, o := range i.ApplicationCommandData().Options {
+		switch o.Type {
+		case discordgo.ApplicationCommandOptionSubCommand, discordgo.ApplicationCommandOptionSubCommandGroup:
+			panic("unreachable")
+		case discordgo.ApplicationCommandOptionString:
+			span.SetAttributes(attribute.String(fmt.Sprintf("command_option.%s", o.Name), o.StringValue()))
+		case discordgo.ApplicationCommandOptionInteger:
+			span.SetAttributes(attribute.Int64(fmt.Sprintf("command_option.%s", o.Name), o.IntValue()))
+		case discordgo.ApplicationCommandOptionBoolean:
+			span.SetAttributes(attribute.Bool(fmt.Sprintf("command_option.%s", o.Name), o.BoolValue()))
+		default:
+			span.SetAttributes(attribute.String(fmt.Sprintf("command_option.%s", o.Name), "unsupported_type"))
+		}
+	}
+
+	log.Info().Ctx(ctx).Msg("command invoked")
+}
+
+func debugCommandCompletion(ctx context.Context, name string, dur time.Duration, err error, s *discordgo.Session, i *discordgo.InteractionCreate) {
+	span := trace.SpanFromContext(ctx)
+	if err != nil {
+		span.SetStatus(codes.Error, err.Error())
+	}
+	log.Info().Ctx(ctx).Dur("latency_ms", dur).Msg("command completed")
+}
+
 func min(a, b int) int {
 	if a < b {
 		return a
 	}
 	return b
 }
+
+func parseCustomIDState(qs string) (url.Values, error) {
+	parts := strings.Split(qs, ":")
+	if len(parts) == 1 {
+		return make(url.Values), nil
+	}
+
+	v, err := url.ParseQuery(parts[1])
+	if err != nil {
+		return nil, err
+	}
+	return v, nil
+}
+
+func initTracing(ctx context.Context, db *sql.DB) error {
+	fd, _ := flydetector.NewDetector().Detect(ctx) // this can't error
+	rd, err := resource.New(ctx,
+		resource.WithHost(),
+		resource.WithOS(),
+		resource.WithProcess(),
+		resource.WithTelemetrySDK(),
+		resource.WithAttributes(semconv.ServiceName("themis")),
+	)
+	if err != nil {
+		return fmt.Errorf("failed to create resource: %w", err)
+	}
+
+	res, err := resource.Merge(fd, rd)
+	if err != nil {
+		return fmt.Errorf("failed to merge resources: %w", err)
+	}
+
+	ex, err := sqliteexporter.NewSqliteSDKTraceExporterWithDB(db)
+	if err != nil {
+		return fmt.Errorf("failed to create span exporter: %w", err)
+	}
+
+	tp := sdktrace.NewTracerProvider(
+		sdktrace.WithBatcher(ex, sdktrace.WithExportTimeout(time.Second)),
+		sdktrace.WithResource(res),
+	)
+
+	otel.SetTracerProvider(tp)
+	tracer = tp.Tracer("themis")
+	return nil
+}

conflicts.go

@@ -3,6 +3,12 @@ package themis
 import (
 	"context"
 	"fmt"
+
+	"github.com/rs/zerolog/log"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/codes"
+	semconv "go.opentelemetry.io/otel/semconv/v1.24.0"
+	"go.opentelemetry.io/otel/trace"
 )
 
 type Conflict struct {
@@ -17,36 +23,47 @@ func (c Conflict) String() string {
 	return fmt.Sprintf("%s owned by #%d %s %s (%s)", c.Province, c.ClaimID, c.ClaimType, c.Claim, c.Player)
 }
 
-const conflictQuery string = `SELECT name, player, claim_type, val, id FROM (
-    SELECT provinces.name, claims.player, claims.claim_type, claims.val, claims.id
-        FROM claims
-        LEFT JOIN provinces ON claims.val = provinces.trade_node
-        WHERE claims.claim_type = 'trade' AND claims.userid IS NOT ?
-        AND provinces.%[1]s = ?
-    UNION
-        SELECT provinces.name, claims.player, claims.claim_type, claims.val, claims.id
-        FROM claims
-        LEFT JOIN provinces ON claims.val = provinces.region
-        WHERE claims.claim_type = 'region' AND claims.userid IS NOT ?
-        AND provinces.%[1]s = ?
-    UNION
-        SELECT provinces.name, claims.player, claims.claim_type, claims.val, claims.id
-        FROM claims
-        LEFT JOIN provinces ON claims.val = provinces.area
-        WHERE claims.claim_type = 'area' AND claims.userid IS NOT ?
-        AND provinces.%[1]s = ?
-);`
+const conflictQuery string = `WITH claiming AS (
+  SELECT province FROM claimables
+  WHERE claimables.typ = ?
+  AND claimables.name = ?
+)
+SELECT claimables.province, claims.player, claims.claim_type, claims.val, claims.id
+FROM claims
+INNER JOIN claimables
+  ON claims.claim_type = claimables.typ
+  AND claims.val = claimables.name
+INNER JOIN claiming
+  ON claiming.province = claimables.province
+WHERE claims.userid  IS NOT ?;`
 
 func (s *Store) FindConflicts(ctx context.Context, userId, name string, claimType ClaimType) ([]Conflict, error) {
-	stmt, err := s.db.PrepareContext(ctx, fmt.Sprintf(conflictQuery, claimTypeToColumn[claimType]))
+	ctx, span := tracer.Start(ctx, "find_conflicts", trace.WithAttributes(
+		semconv.DBSystemSqlite,
+		semconv.DBSQLTable("claims"),
+		semconv.DBOperation("select"),
+		attribute.String("user_id", userId),
+		attribute.String("claim_name", name),
+		attribute.Stringer("claim_type", claimType),
+	))
+	defer span.End()
+
+	log.Debug().Ctx(ctx).Stringer("claim_type", claimType).Str("userid", userId).Msg("searching for potential conflicts")
+
+	stmt, err := s.db.PrepareContext(ctx, conflictQuery)
 	if err != nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "failed to prepare query")
 		return nil, fmt.Errorf("failed to prepare conflicts query: %w", err)
 	}
 
-	rows, err := stmt.QueryContext(ctx, userId, name, userId, name, userId, name)
+	rows, err := stmt.QueryContext(ctx, claimType, name, userId)
 	if err != nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "failed to execute query")
 		return nil, fmt.Errorf("failed to get conflicting provinces: %w", err)
 	}
+	defer stmt.Close()
 
 	conflicts := make([]Conflict, 0)
 	for rows.Next() {
@@ -59,6 +76,8 @@ func (s *Store) FindConflicts(ctx context.Context, userId, name string, claimTyp
 		)
 		err = rows.Scan(&province, &player, &sClaimType, &claimName, &claimId)
 		if err != nil {
+			span.RecordError(err)
+			span.SetStatus(codes.Error, "failed to scan row")
 			return nil, fmt.Errorf("failed to scan row: %w", err)
 		}
 

conflicts_test.go

@@ -2,19 +2,24 @@ package themis
 
 import (
 	"context"
+	"database/sql"
 	"fmt"
 	"reflect"
 	"testing"
 
+	"github.com/rs/zerolog"
 	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 )
 
 func TestStore_FindConflicts(t *testing.T) {
-	store, err := NewStore(fmt.Sprintf(TEST_CONN_STRING_PATTERN, "TestStore_FindConflicts"))
+	db, err := sql.Open("sqlite3", fmt.Sprintf(TEST_CONN_STRING_PATTERN, "TestStore_FindConflicts"))
+	require.NoError(t, err)
+	store, err := NewStore(db, zerolog.Nop())
 	assert.NoError(t, err)
 
-	id, err := store.Claim(context.TODO(), "000000000000000001", "foo", "Bordeaux", CLAIM_TYPE_TRADE)
-	assert.NoError(t, err)
+	id, err := store.Claim(context.Background(), "000000000000000001", "foo", "Bordeaux", CLAIM_TYPE_TRADE)
+	require.NoError(t, err)
 
 	type args struct {
 		ctx       context.Context
@@ -42,7 +47,7 @@ func TestStore_FindConflicts(t *testing.T) {
 		{
 			name: "overlapping",
 			args: args{
-				context.TODO(),
+				context.Background(),
 				"000000000000000002",
 				"Iberia",
 				CLAIM_TYPE_REGION,

correlation/opentelemetry.go

@@ -0,0 +1,44 @@
+package correlation
+
+import (
+	"net/url"
+
+	"github.com/rs/zerolog"
+	"go.opentelemetry.io/otel/propagation"
+	"go.opentelemetry.io/otel/trace"
+)
+
+type TraceContextHook struct{}
+
+func (h TraceContextHook) Run(e *zerolog.Event, level zerolog.Level, msg string) {
+	ctx := e.GetCtx()
+	spanContext := trace.SpanContextFromContext(ctx)
+	trace_id := spanContext.TraceID()
+	if trace_id.IsValid() {
+		e.Stringer("trace_id", trace_id)
+	}
+}
+
+var _ propagation.TextMapCarrier = UrlValuesCarrier{}
+
+type UrlValuesCarrier url.Values
+
+// Get implements propagation.TextMapCarrier.
+func (u UrlValuesCarrier) Get(key string) string {
+	return url.Values(u).Get(key)
+}
+
+// Keys implements propagation.TextMapCarrier.
+func (u UrlValuesCarrier) Keys() []string {
+	raw := map[string][]string(u)
+	ks := make([]string, 0, len(raw))
+	for k := range raw {
+		ks = append(ks, k)
+	}
+	return ks
+}
+
+// Set implements propagation.TextMapCarrier.
+func (u UrlValuesCarrier) Set(key string, value string) {
+	url.Values(u).Set(key, value)
+}

errors.go

@@ -6,6 +6,7 @@ import (
 )
 
 var ErrNoSuchClaim = errors.New("no such claim")
+var ErrNever = errors.New("event never occured")
 
 type ErrConflict struct {
 	Conflicts []Conflict

fly.toml

@@ -7,6 +7,7 @@ processes = []
 
 [env]
 TZ = "America/New_York"
+ENV = "production"
 DISCORD_APP_ID = "1014881815921705030"
 DISCORD_GUILD_ID = "375417755777892353"
 DISCORD_BOT_CHANNEL_ID = "1018997240968265768"
@@ -26,15 +27,6 @@ DISCORD_BOT_CHANNEL_ID = "1018997240968265768"
     soft_limit = 20
     type = "connections"
 
-  [[services.ports]]
-    force_https = true
-    handlers = ["http"]
-    port = 80
-
-  [[services.ports]]
-    handlers = ["tls", "http"]
-    port = 443
-
   [[services.tcp_checks]]
     grace_period = "1s"
     interval = "15s"

fmt.go

@@ -1,19 +1,34 @@
 package themis
 
 import (
+	"context"
 	"database/sql"
 	"fmt"
 	"strings"
+
+	"github.com/rs/zerolog/log"
+	"go.opentelemetry.io/otel/codes"
+	semconv "go.opentelemetry.io/otel/semconv/v1.24.0"
+	"go.opentelemetry.io/otel/trace"
 )
 
-func FormatRows(rows *sql.Rows) (string, error) {
+func FormatRows(ctx context.Context, rows *sql.Rows) (string, error) {
+	ctx, span := tracer.Start(ctx, "format_rows", trace.WithAttributes(
+		semconv.DBSystemSqlite,
+	))
+	defer span.End()
+
 	sb := strings.Builder{}
 
 	cols, err := rows.Columns()
 	if err != nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "failed to get rows columns")
 		return "", fmt.Errorf("failed to get rows columns: %w", err)
 	}
 
+	log.Debug().Ctx(ctx).Int("columns", len(cols)).Msg("formatting sql rows to markdown table")
+
 	c := make([]string, len(cols))
 	for i := range c {
 		c[i] = " %-*s "
@@ -32,6 +47,8 @@ func FormatRows(rows *sql.Rows) (string, error) {
 			row[i] = new(sql.NullString)
 		}
 		if err := rows.Scan(row...); err != nil {
+			span.RecordError(err)
+			span.SetStatus(codes.Error, "failed to scan row")
 			return "", fmt.Errorf("failed to scan next row: %w", err)
 		}
 
@@ -44,6 +61,8 @@ func FormatRows(rows *sql.Rows) (string, error) {
 		}
 	}
 
+	log.Debug().Ctx(ctx).Int("rows", len(scanned)).Ints("lengths", lengths).Msg("scanned rows and extracted max column lengths")
+
 	// Write column names
 	curr := make([]any, 0, 2*len(cols))
 	for i := range lengths {

fmt_test.go

@@ -1,20 +1,26 @@
 package themis
 
 import (
+	"context"
+	"database/sql"
 	"fmt"
 	"testing"
 
+	"github.com/rs/zerolog"
 	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 )
 
 func TestFormatRows(t *testing.T) {
-	store, err := NewStore(fmt.Sprintf(TEST_CONN_STRING_PATTERN, "format-rows"))
+	db, err := sql.Open("sqlite3", fmt.Sprintf(TEST_CONN_STRING_PATTERN, "format-rows"))
+	require.NoError(t, err)
+	store, err := NewStore(db, zerolog.Nop())
 	assert.NoError(t, err)
 
 	rows, err := store.db.Query("SELECT provinces.name, provinces.region, provinces.area, provinces.trade_node FROM provinces WHERE area = 'Gascony'")
 	assert.NoError(t, err)
 
-	fmtd, err := FormatRows(rows)
+	fmtd, err := FormatRows(context.Background(), rows)
 	assert.NoError(t, err)
 	assert.Equal(t, `| name     | region | area    | trade_node |
 | -------- | ------ | ------- | ---------- |
@@ -26,13 +32,15 @@ func TestFormatRows(t *testing.T) {
 }
 
 func TestFormatRowsAggregated(t *testing.T) {
-	store, err := NewStore(fmt.Sprintf(TEST_CONN_STRING_PATTERN, "format-rows"))
+	db, err := sql.Open("sqlite3", fmt.Sprintf(TEST_CONN_STRING_PATTERN, "format-rows"))
+	require.NoError(t, err)
+	store, err := NewStore(db, zerolog.Nop())
 	assert.NoError(t, err)
 
 	rows, err := store.db.Query("SELECT count(1) as total, trade_node from provinces where region = 'France' group by trade_node")
 	assert.NoError(t, err)
 
-	fmtd, err := FormatRows(rows)
+	fmtd, err := FormatRows(context.Background(), rows)
 	assert.NoError(t, err)
 	assert.Equal(t, `| total | trade_node      |
 | ----- | --------------- |
@@ -45,7 +53,9 @@ func TestFormatRowsAggregated(t *testing.T) {
 }
 
 func TestFormatRowsInvalidQuery(t *testing.T) {
-	store, err := NewStore(fmt.Sprintf(TEST_CONN_STRING_PATTERN, "format-rows"))
+	db, err := sql.Open("sqlite3", fmt.Sprintf(TEST_CONN_STRING_PATTERN, "format-rows"))
+	require.NoError(t, err)
+	store, err := NewStore(db, zerolog.Nop())
 	assert.NoError(t, err)
 
 	_, err = store.db.Query("SELECT count(name), distinct(trade_node) from provinces where region = 'France'")

go.mod

@@ -1,13 +1,54 @@
 module go.wperron.io/themis
 
-go 1.21
+go 1.21.1
 
 require (
 	github.com/bwmarrin/discordgo v0.26.1
-	github.com/golang-migrate/migrate/v4 v4.16.2
-	github.com/mattn/go-sqlite3 v1.14.16
-	github.com/rs/zerolog v1.28.0
-	github.com/stretchr/testify v1.8.1
+	github.com/golang-migrate/migrate/v4 v4.17.0
+	github.com/mattn/go-sqlite3 v1.14.19
+	github.com/rs/zerolog v1.31.0
+	github.com/stretchr/testify v1.8.4
+	go.opentelemetry.io/otel/trace v1.24.0
+	go.wperron.io/sqliteexporter v0.1.0
+)
+
+require (
+	github.com/cenkalti/backoff/v4 v4.2.1 // indirect
+	github.com/go-logr/logr v1.4.1 // indirect
+	github.com/go-logr/stdr v1.2.2 // indirect
+	github.com/go-viper/mapstructure/v2 v2.0.0-alpha.1 // indirect
+	github.com/gogo/protobuf v1.3.2 // indirect
+	github.com/golang/protobuf v1.5.3 // indirect
+	github.com/hashicorp/go-version v1.6.0 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/knadh/koanf/maps v0.1.1 // indirect
+	github.com/knadh/koanf/providers/confmap v0.1.0 // indirect
+	github.com/knadh/koanf/v2 v2.0.2 // indirect
+	github.com/mitchellh/copystructure v1.2.0 // indirect
+	github.com/mitchellh/mapstructure v1.5.1-0.20231216201459-8508981c8b6c // indirect
+	github.com/mitchellh/reflectwalk v1.0.2 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
+	go.opencensus.io v0.24.0 // indirect
+	go.opentelemetry.io/collector v0.92.0 // indirect
+	go.opentelemetry.io/collector/component v0.94.1 // indirect
+	go.opentelemetry.io/collector/config/configretry v0.92.0 // indirect
+	go.opentelemetry.io/collector/config/configtelemetry v0.94.1 // indirect
+	go.opentelemetry.io/collector/confmap v0.94.1 // indirect
+	go.opentelemetry.io/collector/consumer v0.92.0 // indirect
+	go.opentelemetry.io/collector/exporter v0.92.0 // indirect
+	go.opentelemetry.io/collector/extension v0.92.0 // indirect
+	go.opentelemetry.io/collector/featuregate v1.0.1 // indirect
+	go.opentelemetry.io/collector/pdata v1.1.0 // indirect
+	go.opentelemetry.io/otel/metric v1.24.0 // indirect
+	go.uber.org/multierr v1.11.0 // indirect
+	go.uber.org/zap v1.26.0 // indirect
+	go.wperron.io/flydetector v0.0.0-20240302202855-7f606a93cdb6 // indirect
+	golang.org/x/net v0.20.0 // indirect
+	golang.org/x/text v0.14.0 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20231106174013-bbf56f31fb17 // indirect
+	google.golang.org/grpc v1.61.0 // indirect
+	google.golang.org/protobuf v1.32.0 // indirect
 )
 
 require (
@@ -15,11 +56,13 @@ require (
 	github.com/gorilla/websocket v1.4.2 // indirect
 	github.com/hashicorp/errwrap v1.1.0 // indirect
 	github.com/hashicorp/go-multierror v1.1.1 // indirect
-	github.com/mattn/go-colorable v0.1.12 // indirect
-	github.com/mattn/go-isatty v0.0.16 // indirect
+	github.com/mattn/go-colorable v0.1.13 // indirect
+	github.com/mattn/go-isatty v0.0.19 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
+	go.opentelemetry.io/otel v1.24.0
+	go.opentelemetry.io/otel/sdk v1.24.0
 	go.uber.org/atomic v1.7.0 // indirect
-	golang.org/x/crypto v0.7.0 // indirect
-	golang.org/x/sys v0.8.0 // indirect
+	golang.org/x/crypto v0.18.0 // indirect
+	golang.org/x/sys v0.17.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -1,12 +1,70 @@
+cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+contrib.go.opencensus.io/exporter/prometheus v0.4.2 h1:sqfsYl5GIY/L570iT+l93ehxaWJs2/OwXtiWwew3oAg=
+contrib.go.opencensus.io/exporter/prometheus v0.4.2/go.mod h1:dvEHbiKmgvbr5pjaF9fpw1KeYcjrnC1J8B+JKjsZyRQ=
+github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
+github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
 github.com/bwmarrin/discordgo v0.26.1 h1:AIrM+g3cl+iYBr4yBxCBp9tD9jR3K7upEjl0d89FRkE=
 github.com/bwmarrin/discordgo v0.26.1/go.mod h1:NJZpH+1AfhIcyQsPeuBKsUtYrRnjkyu0kIVMCHkZtRY=
-github.com/coreos/go-systemd/v22 v22.3.3-0.20220203105225-a9a7ef127534/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
+github.com/cenkalti/backoff/v4 v4.2.1 h1:y4OZtCnogmCPw98Zjyt5a6+QwPLGkiQsYW5oUqylYbM=
+github.com/cenkalti/backoff/v4 v4.2.1/go.mod h1:Y3VNntkOUPxTVeUxJ/G5vcM//AlwfmyYozVcomhLiZE=
+github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
+github.com/cespare/xxhash/v2 v2.2.0 h1:DC2CZ1Ep5Y4k3ZQ899DldepgrayRUGE6BBZ/cd9Cj44=
+github.com/cespare/xxhash/v2 v2.2.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
+github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
+github.com/coreos/go-systemd/v22 v22.5.0/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
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+google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
+google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
+google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20231106174013-bbf56f31fb17 h1:Jyp0Hsi0bmHXG6k9eATXoYtjd6e2UzZ1SCn/wIupY14=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20231106174013-bbf56f31fb17/go.mod h1:oQ5rr10WTTMvP4A36n8JpR1OrO1BEiV4f78CneXZxkA=
+google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
+google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
+google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY=
+google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
+google.golang.org/grpc v1.33.2/go.mod h1:JMHMWHQWaTccqQQlmk3MJZS+GWXOdAesneDmEnv2fbc=
+google.golang.org/grpc v1.61.0 h1:TOvOcuXn30kRao+gfcvsebNEa5iZIiLkisYEkf7R7o0=
+google.golang.org/grpc v1.61.0/go.mod h1:VUbo7IFqmF1QtCAstipjG0GIoq49KvMe9+h1jFLBNJs=
+google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
+google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
+google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
+google.golang.org/protobuf v1.20.1-0.20200309200217-e05f789c0967/go.mod h1:A+miEFZTKqfCUM6K7xSMQL9OKL/b6hQv+e19PK+JZNE=
+google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo=
+google.golang.org/protobuf v1.22.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
+google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
+google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
+google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
+google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
+google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
+google.golang.org/protobuf v1.32.0 h1:pPC6BG5ex8PDFnkbrGU3EixyhKcQ2aDuBS36lqK/C7I=
+google.golang.org/protobuf v1.32.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
+gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
+gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
+honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=

migrations/20231202211824_add_audit.down.sql

@@ -0,0 +1 @@
+DROP TABLE audit_log;

migrations/20231202211824_add_audit.up.sql

@@ -0,0 +1,6 @@
+CREATE TABLE IF NOT EXISTS audit_log (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    event_type TEXT,
+    userid TEXT,
+    ts TIMESTAMP
+);

migrations/20240101221648_update_provinces.down.sql

@@ -0,0 +1,3 @@
+DROP TABLE provinces;
+CREATE TABLE provinces AS SELECT * FROM provinces_bak;
+DROP TABLE provinces_bak;

migrations/20240105153349_create_claimables_view.down.sql

@@ -0,0 +1 @@
+drop claimables;

migrations/20240105153349_create_claimables_view.up.sql

@@ -0,0 +1,14 @@
+create view if not exists claimables as
+    with
+        trades as (select distinct trade_node from provinces where trade_node != ''),
+        areas as (select distinct area from provinces where area != ''),
+        regions as (select distinct region from provinces where region != '')
+    select 'trade' as typ, provinces.trade_node as name, name as province, id
+    from provinces inner join trades on trades.trade_node = provinces.trade_node
+    union
+    select 'area' as typ, provinces.area as name, name as province, id
+    from provinces inner join areas on areas.area = provinces.area
+    union
+    select 'region' as typ, provinces.region as name, name as province, id
+    from provinces inner join regions on regions.region = provinces.region
+;

migrations/20240107175720_update_claimables.down.sql

@@ -0,0 +1,15 @@
+drop table claimables;
+create view if not exists claimables as
+    with
+        trades as (select distinct trade_node from provinces where trade_node != ''),
+        areas as (select distinct area from provinces where area != ''),
+        regions as (select distinct region from provinces where region != '')
+    select 'trade' as typ, provinces.trade_node as name, name as province, id
+    from provinces inner join trades on trades.trade_node = provinces.trade_node
+    union
+    select 'area' as typ, provinces.area as name, name as province, id
+    from provinces inner join areas on areas.area = provinces.area
+    union
+    select 'region' as typ, provinces.region as name, name as province, id
+    from provinces inner join regions on regions.region = provinces.region
+;

migrations/20240107175720_update_claimables.up.sql

@@ -0,0 +1,15 @@
+drop view claimables;
+create table if not exists claimables as
+    with
+        trades as (select distinct trade_node from provinces where trade_node != ''),
+        areas as (select distinct area from provinces where area != ''),
+        regions as (select distinct region from provinces where region != '')
+    select 'trade' as typ, provinces.trade_node as name, name as province, id
+    from provinces inner join trades on trades.trade_node = provinces.trade_node
+    union
+    select 'area' as typ, provinces.area as name, name as province, id
+    from provinces inner join areas on areas.area = provinces.area
+    union
+    select 'region' as typ, provinces.region as name, name as province, id
+    from provinces inner join regions on regions.region = provinces.region
+;

notify.go

@@ -4,6 +4,9 @@ import (
 	"context"
 	"fmt"
 	"time"
+
+	"github.com/rs/zerolog/log"
+	"go.opentelemetry.io/otel/trace"
 )
 
 var loc *time.Location
@@ -13,10 +16,10 @@ func init() {
 }
 
 type Notifier struct {
-	c chan struct{}
+	c chan context.Context
 }
 
-func NewNotifier(c chan struct{}) *Notifier {
+func NewNotifier(c chan context.Context) *Notifier {
 	return &Notifier{
 		c: c,
 	}
@@ -34,34 +37,57 @@ func (n *Notifier) Start(ctx context.Context) {
 		panic("failed to parse next monday notif time. this is likely a bug.")
 	}
 
+	log.Debug().Time("next", t).Msg("starting notifier instance")
+
 	first := time.NewTimer(time.Until(t))
 	<-first.C
 	select {
 	case <-ctx.Done():
+		log.Debug().Msg("context deadline exceeded, exiting notifier")
 		return
 	default:
-		n.c <- struct{}{}
+		log.Debug().Str("parent", "ticker").Msg("notifier tick")
+		ctx, span := tracer.Start(ctx, "notifier_tick", trace.WithNewRoot())
+
+		n.c <- ctx
+		span.End()
 	}
 
 	ticker := time.NewTicker(time.Hour * 24 * 7)
 	for {
 		select {
 		case <-ctx.Done():
+			log.Debug().Msg("context deadline exceeded, exiting notifier")
 			return
 		case <-ticker.C:
-			n.c <- struct{}{}
+			log.Debug().Str("parent", "ticker").Msg("notifier tick")
+			ctx, span := tracer.Start(ctx, "notifier_tick", trace.WithNewRoot())
+
+			n.c <- ctx
+			span.End()
 		}
 		time.Sleep(time.Second)
 	}
 }
 
-func (n *Notifier) NotifyFunc(ctx context.Context, f func()) {
+// Trigger the notifier manually. Should be used for testing purposes only.
+func (n *Notifier) Send(ctx context.Context) {
+	log.Debug().Str("parent", "trigger").Ctx(ctx).Msg("notifier tick")
+	n.c <- ctx
+}
+
+func (n *Notifier) NotifyFunc(ctx context.Context, f func(context.Context)) {
 	for {
 		select {
 		case <-ctx.Done():
+			log.Debug().Msg("context deadline exceeded, exiting notify func")
 			return
-		case <-n.c:
-			f()
+		case innerCtx := <-n.c:
+			innerCtx, span := tracer.Start(innerCtx, "notify_func")
+			log.Debug().Ctx(innerCtx).Msg("tick received, notifying function")
+
+			f(innerCtx)
+			span.End()
 		}
 		time.Sleep(time.Second)
 	}

store.go

@@ -4,7 +4,6 @@ import (
 	"context"
 	"database/sql"
 	"embed"
-	_ "embed"
 	"errors"
 	"fmt"
 	"strings"
@@ -13,21 +12,30 @@ import (
 	"github.com/golang-migrate/migrate/v4/database/sqlite3"
 	"github.com/golang-migrate/migrate/v4/source/iofs"
 	_ "github.com/mattn/go-sqlite3"
+	"github.com/rs/zerolog"
+	"go.opentelemetry.io/otel"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/codes"
+	semconv "go.opentelemetry.io/otel/semconv/v1.24.0"
+	"go.opentelemetry.io/otel/trace"
 )
 
 //go:embed migrations/*.sql
 var migrations embed.FS
 
-type Store struct {
-	db *sql.DB
+var tracer trace.Tracer
+
+func init() {
+	tp := otel.GetTracerProvider()
+	tracer = tp.Tracer("themis")
 }
 
-func NewStore(conn string) (*Store, error) {
-	db, err := sql.Open("sqlite3", conn)
-	if err != nil {
-		return nil, fmt.Errorf("failed to open database: %w", err)
-	}
+type Store struct {
+	db     *sql.DB
+	logger zerolog.Logger
+}
 
+func NewStore(db *sql.DB, logger zerolog.Logger) (*Store, error) {
 	d, err := iofs.New(migrations, "migrations")
 	if err != nil {
 		return nil, fmt.Errorf("failed to open iofs migration source: %w", err)
@@ -48,60 +56,120 @@ func NewStore(conn string) (*Store, error) {
 		return nil, fmt.Errorf("failed to roll up migrations: %w", err)
 	}
 
+	ver, dirty, err := m.Version()
+	if err != nil && err != migrate.ErrNilVersion {
+		return nil, fmt.Errorf("failed to get database migration version: %w", err)
+	}
+
+	logger.Debug().Uint("current_version", ver).Bool("dirty", dirty).Msg("running database migrations")
+
 	return &Store{
-		db: db,
+		logger: logger,
+		db:     db,
 	}, nil
 }
 
 func (s *Store) Close() error {
+	s.logger.Debug().Msg("closing database")
 	return s.db.Close()
 }
 
 func (s *Store) Claim(ctx context.Context, userId, player, province string, claimType ClaimType) (int, error) {
+	ctx, span := tracer.Start(ctx, "claim", trace.WithAttributes(
+		semconv.DBSystemSqlite,
+		semconv.DBSQLTable("claims"),
+		semconv.DBOperation("insert"),
+		attribute.String("user_id", userId),
+		attribute.String("claim_name", province),
+		attribute.Stringer("claim_type", claimType),
+	))
+	defer span.End()
+
+	s.logger.Debug().
+		Ctx(ctx).
+		Str("userid", userId).
+		Str("player", player).
+		Str("province", province).
+		Stringer("claim_type", claimType).
+		Msg("inserting claim")
+	audit := &AuditableEvent{
+		userId:    userId,
+		eventType: EventClaim,
+	}
+	defer s.Audit(ctx, audit)
+
 	tx, err := s.db.Begin()
 	if err != nil {
+		audit.err = err
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "failed to begin transaction")
 		return 0, fmt.Errorf("failed to begin transaction: %w", err)
 	}
 	defer tx.Commit() //nolint:errcheck
 
 	conflicts, err := s.FindConflicts(ctx, userId, province, claimType)
 	if err != nil {
+		audit.err = err
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "conflict check failed")
 		return 0, fmt.Errorf("failed to run conflicts check: %w", err)
 	}
 
 	if len(conflicts) > 0 {
+		s.logger.Debug().Ctx(ctx).Int("len", len(conflicts)).Msg("found conflicts")
+		audit.err = errors.New("found conflicts")
 		return 0, ErrConflict{Conflicts: conflicts}
 	}
 
 	// check that provided name matches the claim type
-	stmt, err := s.db.PrepareContext(ctx, fmt.Sprintf(`SELECT COUNT(1) FROM provinces WHERE LOWER(provinces.%s) = ?`, claimTypeToColumn[claimType]))
+	stmt, err := s.db.PrepareContext(ctx, `SELECT COUNT(1) FROM claimables WHERE lower(name) = ? and typ = ?`)
 	if err != nil {
+		audit.err = err
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "failed to prepare query")
 		return 0, fmt.Errorf("failed to prepare count query: %w", err)
 	}
+	defer stmt.Close()
 
-	row := stmt.QueryRowContext(ctx, strings.ToLower(province))
+	row := stmt.QueryRowContext(ctx, strings.ToLower(province), claimType)
 	var count int
 	err = row.Scan(&count)
 	if err != nil {
+		audit.err = err
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "failed to scan row")
 		return 0, fmt.Errorf("failed to scan: %w", err)
 	}
 
 	if count == 0 {
+		audit.err = err
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "no matching provinces found")
 		return 0, fmt.Errorf("found no provinces for %s named %s", claimType, province)
 	}
 
 	stmt, err = s.db.PrepareContext(ctx, "INSERT INTO claims (player, claim_type, val, userid) VALUES (?, ?, ?, ?)")
 	if err != nil {
+		audit.err = err
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "failed to prepare query")
 		return 0, fmt.Errorf("failed to prepare claim query: %w", err)
 	}
+	defer stmt.Close()
 
 	res, err := stmt.ExecContext(ctx, player, claimType, province, userId)
 	if err != nil {
+		audit.err = err
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "failed to execute query")
 		return 0, fmt.Errorf("failed to insert claim: %w", err)
 	}
 
 	id, err := res.LastInsertId()
 	if err != nil {
+		audit.err = err
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "failed to last insert id")
 		return 0, fmt.Errorf("failed to get last ID: %w", err)
 	}
 
@@ -109,24 +177,42 @@ func (s *Store) Claim(ctx context.Context, userId, player, province string, clai
 }
 
 func (s *Store) ListAvailability(ctx context.Context, claimType ClaimType, search ...string) ([]string, error) {
+	ctx, span := tracer.Start(ctx, "list_availability", trace.WithAttributes(
+		semconv.DBSystemSqlite,
+		semconv.DBSQLTable("claimables"),
+		semconv.DBOperation("select"),
+		attribute.StringSlice("search_terms", search),
+		attribute.Stringer("claim_type", claimType),
+	))
+	defer span.End()
+
+	s.logger.Debug().Ctx(ctx).Stringer("claim_type", claimType).Strs("search_terms", search).Msg("listing available entries")
 	queryParams := []any{string(claimType)}
-	queryPattern := `SELECT DISTINCT(provinces.%[1]s)
-	FROM provinces LEFT JOIN claims ON provinces.%[1]s = claims.val AND claims.claim_type = ?
+
+	queryPattern := `SELECT distinct name
+	FROM claimables
+	LEFT JOIN claims ON claimables.name = claims.val AND claimables.typ = claims.claim_type
 	WHERE claims.val IS NULL
-	AND provinces.typ = 'Land'`
+	AND claimables.typ = ?`
+
 	if len(search) > 0 && search[0] != "" {
 		// only take one search param, ignore the rest
-		queryPattern += `AND provinces.%[1]s LIKE ?`
+		queryPattern += `AND claimables.name LIKE ?`
 		queryParams = append(queryParams, fmt.Sprintf("%%%s%%", search[0]))
 	}
 
-	stmt, err := s.db.PrepareContext(ctx, fmt.Sprintf(queryPattern, claimTypeToColumn[claimType]))
+	stmt, err := s.db.PrepareContext(ctx, queryPattern)
 	if err != nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "failed to prepare query")
 		return nil, fmt.Errorf("failed to prepare query: %w", err)
 	}
+	defer stmt.Close()
 
 	rows, err := stmt.QueryContext(ctx, queryParams...)
 	if err != nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "failed to execute query")
 		return nil, fmt.Errorf("failed to execute query: %w", err)
 	}
 
@@ -134,6 +220,8 @@ func (s *Store) ListAvailability(ctx context.Context, claimType ClaimType, searc
 	for rows.Next() {
 		var s string
 		if err := rows.Scan(&s); err != nil {
+			span.RecordError(err)
+			span.SetStatus(codes.Error, "failed to scan row")
 			return nil, fmt.Errorf("failed to scan rows: %w", err)
 		}
 		avail = append(avail, s)
@@ -143,13 +231,26 @@ func (s *Store) ListAvailability(ctx context.Context, claimType ClaimType, searc
 }
 
 func (s *Store) ListClaims(ctx context.Context) ([]Claim, error) {
+	ctx, span := tracer.Start(ctx, "list_claims", trace.WithAttributes(
+		semconv.DBSystemSqlite,
+		semconv.DBSQLTable("claims"),
+		semconv.DBOperation("select"),
+	))
+	defer span.End()
+
+	s.logger.Debug().Ctx(ctx).Msg("listing all claims currently in database")
 	stmt, err := s.db.PrepareContext(ctx, `SELECT id, player, claim_type, val FROM claims`)
 	if err != nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "failed to prepare query")
 		return nil, fmt.Errorf("failed to prepare query: %w", err)
 	}
+	defer stmt.Close()
 
 	rows, err := stmt.QueryContext(ctx)
 	if err != nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "failed to execute query")
 		return nil, fmt.Errorf("failed to execute query: %w", err)
 	}
 
@@ -159,10 +260,14 @@ func (s *Store) ListClaims(ctx context.Context) ([]Claim, error) {
 		var rawType string
 		err = rows.Scan(&c.ID, &c.Player, &rawType, &c.Name)
 		if err != nil {
+			span.RecordError(err)
+			span.SetStatus(codes.Error, "failed to scan row")
 			return nil, fmt.Errorf("failed to scan row: %w", err)
 		}
 		cl, err := ClaimTypeFromString(rawType)
 		if err != nil {
+			span.RecordError(err)
+			span.SetStatus(codes.Error, "failed to parse claim type")
 			return nil, fmt.Errorf("unexpected error converting raw claim type: %w", err)
 		}
 		c.Type = cl
@@ -182,16 +287,28 @@ func (cd ClaimDetail) String() string {
 	sb := strings.Builder{}
 	sb.WriteString(fmt.Sprintf("%s\n", cd.Claim))
 	for _, p := range cd.Provinces {
-		sb.WriteString(fmt.Sprintf("  - %s\n", p))
+		sb.WriteString(fmt.Sprintf("- %s\n", p))
 	}
 	return sb.String()
 }
 
 func (s *Store) DescribeClaim(ctx context.Context, ID int) (ClaimDetail, error) {
+	ctx, span := tracer.Start(ctx, "describe_claim", trace.WithAttributes(
+		semconv.DBSystemSqlite,
+		semconv.DBSQLTable("claims"),
+		semconv.DBOperation("select"),
+		attribute.Int("claim_id", ID),
+	))
+	defer span.End()
+
+	s.logger.Debug().Ctx(ctx).Int("id", ID).Msg("describing claim")
 	stmt, err := s.db.PrepareContext(ctx, `SELECT id, player, claim_type, val FROM claims WHERE id = ?`)
 	if err != nil {
-		return ClaimDetail{}, fmt.Errorf("failed to get claim: %w", err)
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "failed to prepare query")
+		return ClaimDetail{}, fmt.Errorf("failed to prepare select claim query: %w", err)
 	}
+	defer stmt.Close()
 
 	row := stmt.QueryRowContext(ctx, ID)
 
@@ -199,24 +316,34 @@ func (s *Store) DescribeClaim(ctx context.Context, ID int) (ClaimDetail, error)
 	var rawType string
 	err = row.Scan(&c.ID, &c.Player, &rawType, &c.Name)
 	if err == sql.ErrNoRows {
+		span.RecordError(ErrNoSuchClaim)
 		return ClaimDetail{}, ErrNoSuchClaim
 	}
 	if err != nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "failed to scan row")
 		return ClaimDetail{}, fmt.Errorf("failed to scan row: %w", err)
 	}
 	cl, err := ClaimTypeFromString(rawType)
 	if err != nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "failed to parse claim type")
 		return ClaimDetail{}, fmt.Errorf("unexpected error converting raw claim type: %w", err)
 	}
 	c.Type = cl
 
-	stmt, err = s.db.PrepareContext(ctx, fmt.Sprintf(`SELECT name FROM provinces where provinces.%s = ?`, claimTypeToColumn[cl]))
+	stmt, err = s.db.PrepareContext(ctx, `SELECT province FROM claimables WHERE name = ? AND typ = ?`)
 	if err != nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "failed to prepare query")
 		return ClaimDetail{}, fmt.Errorf("failed to prepare query: %w", err)
 	}
+	defer stmt.Close()
 
-	rows, err := stmt.QueryContext(ctx, c.Name)
+	rows, err := stmt.QueryContext(ctx, c.Name, cl)
 	if err != nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "failed to execute query")
 		return ClaimDetail{}, fmt.Errorf("failed to execute query: %w", err)
 	}
 
@@ -225,6 +352,8 @@ func (s *Store) DescribeClaim(ctx context.Context, ID int) (ClaimDetail, error)
 		var p string
 		err = rows.Scan(&p)
 		if err != nil {
+			span.RecordError(err)
+			span.SetStatus(codes.Error, "failed to scan row")
 			return ClaimDetail{}, fmt.Errorf("failed to scan result set: %w", err)
 		}
 		provinces = append(provinces, p)
@@ -237,44 +366,102 @@ func (s *Store) DescribeClaim(ctx context.Context, ID int) (ClaimDetail, error)
 }
 
 func (s *Store) DeleteClaim(ctx context.Context, ID int, userId string) error {
+	ctx, span := tracer.Start(ctx, "delete_claim", trace.WithAttributes(
+		semconv.DBSystemSqlite,
+		semconv.DBSQLTable("claims"),
+		semconv.DBOperation("delete"),
+		attribute.Int("claim_id", ID),
+		attribute.String("user_id", userId),
+	))
+	defer span.End()
+
+	s.logger.Debug().Ctx(ctx).Str("userid", userId).Int("id", ID).Msg("deleting claim")
+	audit := &AuditableEvent{
+		userId:    userId,
+		eventType: EventUnclaim,
+	}
+	defer s.Audit(ctx, audit)
+
 	stmt, err := s.db.PrepareContext(ctx, "DELETE FROM claims WHERE id = ? AND userid = ?")
 	if err != nil {
+		audit.err = err
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "failed to prepare query")
 		return fmt.Errorf("failed to prepare query: %w", err)
 	}
+	defer stmt.Close()
 
 	res, err := stmt.ExecContext(ctx, ID, userId)
 	if err != nil {
+		audit.err = err
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "failed to execute query")
 		return fmt.Errorf("failed to delete claim ID %d: %w", ID, err)
 	}
 
 	rows, err := res.RowsAffected()
 	if err != nil {
+		audit.err = err
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "failed to get number of affected rows")
 		return fmt.Errorf("failed to get affected rows: %w", err)
 	}
 	if rows == 0 {
+		audit.err = ErrNoSuchClaim
+		span.RecordError(ErrNoSuchClaim)
 		return ErrNoSuchClaim
 	}
 	return nil
 }
 
 func (s *Store) CountClaims(ctx context.Context) (total, uniquePlayers int, err error) {
+	ctx, span := tracer.Start(ctx, "count_claims", trace.WithAttributes(
+		semconv.DBSystemSqlite,
+		semconv.DBSQLTable("claims"),
+		semconv.DBOperation("select"),
+	))
+	defer span.End()
+
+	s.logger.Debug().Ctx(ctx).Msg("counting all claims and unique users")
 	stmt, err := s.db.PrepareContext(ctx, "SELECT COUNT(1), COUNT(DISTINCT(userid)) FROM claims")
 	if err != nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "failed to prepare query")
 		return 0, 0, fmt.Errorf("failed to prepare query: %w", err)
 	}
+	defer stmt.Close()
 
 	res := stmt.QueryRowContext(ctx)
 
 	if err := res.Scan(&total, &uniquePlayers); err != nil {
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "failed to scan row")
 		return 0, 0, fmt.Errorf("failed to scan result: %w", err)
 	}
 
 	return total, uniquePlayers, nil
 }
 
-func (s *Store) Flush(ctx context.Context) error {
+func (s *Store) Flush(ctx context.Context, userId string) error {
+	ctx, span := tracer.Start(ctx, "flush", trace.WithAttributes(
+		semconv.DBSystemSqlite,
+		semconv.DBSQLTable("claims"),
+		semconv.DBOperation("delete"),
+	))
+	defer span.End()
+
+	s.logger.Debug().Ctx(ctx).Str("initiated_by", userId).Msg("flushing all currently help claims")
+	audit := &AuditableEvent{
+		userId:    userId,
+		eventType: EventFlush,
+	}
+	defer s.Audit(ctx, audit)
+
 	_, err := s.db.ExecContext(ctx, "DELETE FROM claims;")
 	if err != nil {
+		audit.err = err
+		span.RecordError(err)
+		span.SetStatus(codes.Error, "failed to execute query")
 		return fmt.Errorf("failed to execute delete query: %w", err)
 	}
 	return nil

store_test.go

@@ -3,11 +3,13 @@ package themis
 
 import (
 	"context"
+	"database/sql"
 	_ "embed"
 	"fmt"
 	"testing"
 
 	_ "github.com/mattn/go-sqlite3"
+	"github.com/rs/zerolog"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
@@ -15,7 +17,9 @@ import (
 const TEST_CONN_STRING_PATTERN = "file:%s?mode=memory&cache=shared"
 
 func TestStore_Claim(t *testing.T) {
-	store, err := NewStore(fmt.Sprintf(TEST_CONN_STRING_PATTERN, "TestStore_Claim"))
+	db, err := sql.Open("sqlite3", fmt.Sprintf(TEST_CONN_STRING_PATTERN, "TestStore_Claim"))
+	require.NoError(t, err)
+	store, err := NewStore(db, zerolog.Nop())
 	require.NoError(t, err)
 
 	type args struct {
@@ -90,17 +94,27 @@ func TestStore_Claim(t *testing.T) {
 			wantErr: false,
 		},
 	}
+	lastAudit := 0
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
 			if _, err := store.Claim(context.TODO(), tt.args.userId, tt.args.player, tt.args.province, tt.args.claimType); (err != nil) != tt.wantErr {
 				t.Errorf("Store.Claim() error = %v, wantErr %v", err, tt.wantErr)
 			}
+
+			if !tt.wantErr {
+				ae, err := store.LastOf(context.TODO(), EventClaim)
+				require.NoError(t, err)
+				assert.Greater(t, ae.Id, lastAudit)
+				lastAudit = ae.Id
+			}
 		})
 	}
 }
 
 func TestAvailability(t *testing.T) {
-	store, err := NewStore(fmt.Sprintf(TEST_CONN_STRING_PATTERN, "TestAvailability"))
+	db, err := sql.Open("sqlite3", fmt.Sprintf(TEST_CONN_STRING_PATTERN, "TestStore_Availability"))
+	require.NoError(t, err)
+	store, err := NewStore(db, zerolog.Nop())
 	assert.NoError(t, err)
 
 	store.Claim(context.TODO(), "000000000000000001", "foo", "Genoa", CLAIM_TYPE_TRADE)
@@ -116,22 +130,22 @@ func TestAvailability(t *testing.T) {
 	store.Claim(context.TODO(), "000000000000000001", "foo", "France", CLAIM_TYPE_REGION)
 	store.Claim(context.TODO(), "000000000000000001", "foo", "Italy", CLAIM_TYPE_REGION)
 
-	// There's a total of 73 distinct regions, there should be 71 available
+	// There's a total of 92 distinct regions, there should be 90 available
 	// after the two claims above
 	availability, err = store.ListAvailability(context.TODO(), CLAIM_TYPE_REGION)
 	assert.NoError(t, err)
-	assert.Equal(t, 71, len(availability))
+	assert.Equal(t, 90, len(availability))
 
 	store.Claim(context.TODO(), "000000000000000001", "foo", "Normandy", CLAIM_TYPE_AREA)
 	store.Claim(context.TODO(), "000000000000000001", "foo", "Champagne", CLAIM_TYPE_AREA)
 	store.Claim(context.TODO(), "000000000000000001", "foo", "Lorraine", CLAIM_TYPE_AREA)
 	store.Claim(context.TODO(), "000000000000000001", "foo", "Provence", CLAIM_TYPE_AREA)
 
-	// There's a total of 823 distinct regions, there should be 819 available
+	// There's a total of 882 distinct regions, there should be 878 available
 	// after the four claims above
 	availability, err = store.ListAvailability(context.TODO(), CLAIM_TYPE_AREA)
 	assert.NoError(t, err)
-	assert.Equal(t, 819, len(availability))
+	assert.Equal(t, 878, len(availability))
 
 	// There is both a Trade Node and an Area called 'Valencia', while the trade
 	// node is claimed, the area should show up in the availability list (even
@@ -139,15 +153,17 @@ func TestAvailability(t *testing.T) {
 	store.Claim(context.TODO(), "000000000000000001", "foo", "Valencia", CLAIM_TYPE_TRADE)
 	availability, err = store.ListAvailability(context.TODO(), CLAIM_TYPE_AREA)
 	assert.NoError(t, err)
-	assert.Equal(t, 819, len(availability)) // availability for areas should be the same as before
+	assert.Equal(t, 878, len(availability)) // availability for areas should be the same as before
 
 	availability, err = store.ListAvailability(context.TODO(), CLAIM_TYPE_AREA, "bay")
 	assert.NoError(t, err)
-	assert.Equal(t, 3, len(availability)) // availability for areas should be the same as before
+	assert.Equal(t, 6, len(availability)) // availability for areas should be the same as before
 }
 
 func TestDeleteClaim(t *testing.T) {
-	store, err := NewStore(fmt.Sprintf(TEST_CONN_STRING_PATTERN, "TestDeleteClaim"))
+	db, err := sql.Open("sqlite3", fmt.Sprintf(TEST_CONN_STRING_PATTERN, "TestStore_DeleteClaim"))
+	require.NoError(t, err)
+	store, err := NewStore(db, zerolog.Nop())
 	assert.NoError(t, err)
 	// make sure all claims are gone, this is due to how the in-memory database
 	// with a shared cache interacts with other tests running in parallel
@@ -165,13 +181,23 @@ func TestDeleteClaim(t *testing.T) {
 	err = store.DeleteClaim(context.TODO(), fooId, "000000000000000001")
 	assert.NoError(t, err)
 
+	ae, err := store.LastOf(context.TODO(), EventUnclaim)
+	require.NoError(t, err)
+	last := ae.Id
+
 	err = store.DeleteClaim(context.TODO(), barId, "000000000000000001")
 	assert.Error(t, err)
 	assert.ErrorIs(t, err, ErrNoSuchClaim)
+
+	ae, err = store.LastOf(context.TODO(), EventUnclaim)
+	require.NoError(t, err)
+	assert.Equal(t, last, ae.Id) // no new audit log was added
 }
 
 func TestDescribeClaim(t *testing.T) {
-	store, err := NewStore(fmt.Sprintf(TEST_CONN_STRING_PATTERN, "TestDescribeClaim"))
+	db, err := sql.Open("sqlite3", fmt.Sprintf(TEST_CONN_STRING_PATTERN, "TestStore_DescribeClaim"))
+	require.NoError(t, err)
+	store, err := NewStore(db, zerolog.Nop())
 	assert.NoError(t, err)
 
 	id, err := store.Claim(context.TODO(), "000000000000000001", "foo", "Genoa", CLAIM_TYPE_TRADE)
@@ -187,7 +213,9 @@ func TestDescribeClaim(t *testing.T) {
 }
 
 func TestCountClaims(t *testing.T) {
-	store, err := NewStore(fmt.Sprintf(TEST_CONN_STRING_PATTERN, "TestFlush"))
+	db, err := sql.Open("sqlite3", fmt.Sprintf(TEST_CONN_STRING_PATTERN, "TestStore_CountClaim"))
+	require.NoError(t, err)
+	store, err := NewStore(db, zerolog.Nop())
 	assert.NoError(t, err)
 
 	store.Claim(context.TODO(), "000000000000000001", "foo", "Genoa", CLAIM_TYPE_TRADE)
@@ -203,7 +231,9 @@ func TestCountClaims(t *testing.T) {
 }
 
 func TestFlush(t *testing.T) {
-	store, err := NewStore(fmt.Sprintf(TEST_CONN_STRING_PATTERN, "TestFlush"))
+	db, err := sql.Open("sqlite3", fmt.Sprintf(TEST_CONN_STRING_PATTERN, "TestStore_Flush"))
+	require.NoError(t, err)
+	store, err := NewStore(db, zerolog.Nop())
 	assert.NoError(t, err)
 
 	store.Claim(context.TODO(), "000000000000000001", "foo", "Genoa", CLAIM_TYPE_TRADE)
@@ -212,8 +242,11 @@ func TestFlush(t *testing.T) {
 	store.Claim(context.TODO(), "000000000000000001", "foo", "Iberia", CLAIM_TYPE_REGION)
 	store.Claim(context.TODO(), "000000000000000001", "foo", "Ragusa", CLAIM_TYPE_TRADE)
 
-	assert.NoError(t, store.Flush(context.TODO()))
+	assert.NoError(t, store.Flush(context.TODO(), "bob"))
 	claims, err := store.ListClaims(context.TODO())
 	assert.NoError(t, err)
 	assert.Equal(t, 0, len(claims))
+
+	_, err = store.LastOf(context.TODO(), EventFlush)
+	require.NoError(t, err)
 }

uptime_darwin.go

@@ -3,10 +3,11 @@
 package themis
 
 import (
+	"context"
 	"time"
 )
 
 // Uptime returns the time elapsed since the start of the current process ID.
-func Uptime() (time.Duration, error) {
+func Uptime(ctx context.Context) (time.Duration, error) {
 	return 0, nil
 }

uptime_linux.go

@@ -4,18 +4,22 @@ package themis
 
 import (
 	"bytes"
+	"context"
 	"fmt"
 	"os"
 	"strconv"
 	"time"
+
+	"github.com/rs/zerolog/log"
 )
 
 // Uptime returns the time elapsed since the start of the current process ID.
-func Uptime() (time.Duration, error) {
+func Uptime(ctx context.Context) (time.Duration, error) {
 	raw, err := os.ReadFile("/proc/uptime")
 	if err != nil {
 		return 0, fmt.Errorf("failed to read uptime from OS: %w", err)
 	}
+	log.Debug().Ctx(ctx).Str("raw", string(raw)).Msg("reading /proc/uptime to get server up time")
 
 	i := bytes.IndexRune(raw, ' ')
 

uptime_test.go

@@ -1,9 +1,10 @@
 package themis
 
 import (
+	"context"
+	"runtime"
 	"testing"
 	"time"
-	"runtime"
 
 	"github.com/stretchr/testify/assert"
 )
@@ -12,7 +13,7 @@ func TestUptime(t *testing.T) {
 	if runtime.GOOS == "darwin" {
 		t.Skip()
 	}
-	uptime, err := Uptime()
+	uptime, err := Uptime(context.Background())
 	assert.NoError(t, err)
 	assert.Greater(t, uptime, 100*time.Millisecond)
 }