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

@@ -6,11 +6,25 @@ import (
 	"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")
 	}
 
@@ -21,17 +35,23 @@ func (s *Store) AddAbsence(ctx context.Context, session time.Time, userId string
 
 	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)
 	}
 
@@ -39,20 +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)
 	}
 
@@ -74,23 +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)
 	}
 
@@ -99,14 +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)
-			schedule[date] = append(schedule[date], user)
-		} else {
-			schedule[date] = []string{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()
@@ -31,7 +35,9 @@ func TestAddAbsence(t *testing.T) {
 }
 
 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

@@ -3,11 +3,14 @@ package themis
 import (
 	"context"
 	"database/sql"
-	"errors"
 	"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
@@ -45,36 +48,50 @@ func EventTypeFromString(ev string) (EventType, error) {
 	case "ABSENT":
 		return EventAbsence, nil
 	default:
-		return EventType(9999), errors.New("no such event type")
+		return EventType(9999), fmt.Errorf("no such event type: %s", ev)
 	}
 }
 
 type AuditableEvent struct {
 	userId    string
 	eventType EventType
-	timestamp time.Time
 	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")
 		}
 	}
@@ -88,10 +105,20 @@ type AuditEvent struct {
 }
 
 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)
 	}
 
@@ -101,15 +128,20 @@ func (s *Store) LastOf(ctx context.Context, t EventType) (AuditEvent, error) {
 	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 {
-		return AuditEvent{}, fmt.Errorf("failed to parse event type %s: %w", rawEventType, err)
+		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

@@ -10,6 +10,7 @@ import (
 	"net/url"
 	"os"
 	"os/signal"
+	"runtime/pprof"
 	"sort"
 	"strconv"
 	"strings"
@@ -20,10 +21,19 @@ import (
 	_ "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"
-	zerologcompat "go.wperron.io/themis/correlation/compat/zerolog"
 )
 
 const (
@@ -31,15 +41,16 @@ 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.")
+	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
-	seq   = &correlation.CryptoRandSequencer{}
+	tracer     trace.Tracer
-	gen   = correlation.NewGenerator(seq)
+	propagator = propagation.TraceContext{}
 )
 
-type Handler func(ctx context.Context, 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.")
@@ -55,9 +66,20 @@ func main() {
 		zerolog.SetGlobalLevel(zerolog.DebugLevel)
 	}
 	log.Logger = log.Output(zerolog.ConsoleWriter{Out: os.Stdout})
-	log.Logger = log.Logger.Hook(zerologcompat.CorrelationHook{})
+	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")
@@ -72,13 +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)
 
@@ -215,7 +247,7 @@ func main() {
 		},
 	}
 	handlers := map[string]Handler{
-		"info": func(ctx context.Context, s *discordgo.Session, i *discordgo.InteractionCreate) {
+		"info": func(ctx context.Context, s *discordgo.Session, i *discordgo.InteractionCreate) error {
 			uptime, err := themis.Uptime(ctx)
 			if err != nil {
 				err := s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
@@ -225,10 +257,9 @@ func main() {
 					},
 				})
 				if err != nil {
-					log.Error().Ctx(ctx).Err(err).Msg("failed to respond to interaction")
+					return fmt.Errorf("failed to respond to interaction: %w", err)
 				}
-				log.Error().Ctx(ctx).Err(err).Msg("failed to get server uptime")
+				return fmt.Errorf("failed to get server uptime: %w", err)
-				return
 			}
 
 			claimCount, uniquePlayers, err := store.CountClaims(ctx)
@@ -240,10 +271,9 @@ func main() {
 					},
 				})
 				if err != nil {
-					log.Error().Ctx(ctx).Err(err).Msg("failed to respond to interaction")
+					return fmt.Errorf("failed to respond to interaction: %w", err)
 				}
-				log.Error().Ctx(ctx).Err(err).Msg("failed to count claims")
+				return fmt.Errorf("failed to count claims: %w", err)
-				return
 			}
 
 			ev, err := store.LastOf(ctx, themis.EventFlush)
@@ -257,10 +287,9 @@ func main() {
 						},
 					})
 					if err != nil {
-						log.Error().Ctx(ctx).Err(err).Msg("failed to respond to interaction")
+						return fmt.Errorf("failed to respond to interaction: %w", err)
 					}
-					log.Error().Ctx(ctx).Err(err).Msg("failed get last flush event")
+					return fmt.Errorf("failed get last flush event: %w", err)
-					return
 				}
 				lastFlush = "never"
 			} else {
@@ -274,10 +303,11 @@ func main() {
 				},
 			})
 			if 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
 		},
-		"list-claims": func(ctx context.Context, 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 {
 				err := s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
@@ -287,10 +317,9 @@ func main() {
 					},
 				})
 				if err != nil {
-					log.Error().Ctx(ctx).Err(err).Msg("failed to respond to interaction")
+					return fmt.Errorf("failed to respond to interaction: %w", err)
 				}
-				log.Error().Ctx(ctx).Err(err).Msg("failed to list claims")
+				return fmt.Errorf("failed to list claims: %w", err)
-				return
 			}
 
 			sb := strings.Builder{}
@@ -306,14 +335,16 @@ func main() {
 				},
 			})
 			if 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
 		},
-		"claim": func(ctx context.Context, 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
@@ -321,13 +352,14 @@ 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().Ctx(ctx).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())
@@ -335,14 +367,14 @@ func main() {
 				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().Ctx(ctx).Err(err).Msg("failed to respond to interaction")
+					return fmt.Errorf("failed to respond to interaction: %w", err)
 				}
-				log.Error().Ctx(ctx).Err(err).Str("claim_type", opts[0].StringValue()).Msg("failed to parse claim")
+				return fmt.Errorf("failed to parse claim: %w", err)
-				return
 			}
 			name := opts[1].StringValue()
 
@@ -355,6 +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{}
@@ -367,26 +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().Ctx(ctx).Err(err).Msg("failed to respond to interaction")
+						return fmt.Errorf("failed to respond to interaction")
 					}
-					return
+					return nil
 				}
 
 				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().Ctx(ctx).Err(err).Msg("failed to respond to interaction")
+					return fmt.Errorf("failed to respond to interaction: %w", err)
 				}
-				log.Error().Ctx(ctx).Err(err).Msg("failed to acquire claim")
+				return fmt.Errorf("failed to acquire claim: %w", err)
-				return
 			}
 
 			err = s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
@@ -396,10 +430,11 @@ func main() {
 				},
 			})
 			if 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
 		},
-		"describe-claim": func(ctx context.Context, 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 {
@@ -410,16 +445,15 @@ func main() {
 					},
 				})
 				if err != nil {
-					log.Error().Ctx(ctx).Err(err).Msg("failed to respond to interaction")
+					return fmt.Errorf("failed to respond to interaction: %w", err)
 				}
-				log.Error().Ctx(ctx).Err(err).Msg("failed to describe claim")
+				return fmt.Errorf("failed to describe claim: %w", err)
-				return
 			}
 
 			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{
@@ -429,15 +463,16 @@ func main() {
 				},
 			})
 			if 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
 		},
-		"delete-claim": func(ctx context.Context, 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)
 				}
@@ -448,34 +483,33 @@ func main() {
 					},
 				})
 				if err != nil {
-					log.Error().Ctx(ctx).Err(err).Msg("failed to respond to interaction")
+					return fmt.Errorf("failed to respond to interaction: %w", err)
 				}
 
-				log.Error().Ctx(ctx).Err(err).Msg("failed to delete claim")
+				return fmt.Errorf("failed to delete claim: %w", err)
-				return
 			}
 
 			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().Ctx(ctx).Err(err).Msg("failed to respond to interaction")
+				return fmt.Errorf("failed to respond to interaction: %w", err)
 			}
+			return nil
 		},
-		"flush": func(ctx context.Context, s *discordgo.Session, i *discordgo.InteractionCreate) {
+		"flush": func(ctx context.Context, s *discordgo.Session, i *discordgo.InteractionCreate) error {
-			cid := correlation.FromContext(ctx)
 			baggage := make(url.Values)
-			baggage.Set("correlation_id", cid.String())
+			propagator.Inject(ctx, correlation.UrlValuesCarrier(baggage))
-			state := baggage.Encode()
 
 			sb := strings.Builder{}
 			sb.WriteString("modal_flush")
-			if state != "" {
+			if len(baggage) != 0 {
 				sb.WriteRune(':')
-				sb.WriteString(state)
+				sb.WriteString(baggage.Encode())
 			}
 
 			if err := s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
@@ -506,14 +540,14 @@ func main() {
 					},
 				},
 			}); 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
 		},
-		"query": func(ctx context.Context, 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().Ctx(ctx).Err(err).Msg("failed to open read-only copy of database")
+				return fmt.Errorf("failed to open read-only copy of database: %w", err)
-				return
 			}
 
 			q := i.ApplicationCommandData().Options[0].StringValue()
@@ -521,14 +555,12 @@ func main() {
 			defer cancelDeadline()
 			rows, err := roDB.QueryContext(deadlined, q)
 			if err != nil {
-				log.Error().Ctx(ctx).Err(err).Msg("failed to exec user-provided query")
+				return fmt.Errorf("faied to exec user-provided query: %w", err)
-				return
 			}
 
 			fmtd, err := themis.FormatRows(ctx, rows)
 			if err != nil {
-				log.Error().Ctx(ctx).Err(err).Msg("failed to format rows")
+				return fmt.Errorf("failed to format rows: %w", err)
-				return
 			}
 
 			// 2000 is a magic number here, it's the character limit for a discord
@@ -543,9 +575,11 @@ func main() {
 				},
 			}); 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
 		},
-		"schedule": func(ctx context.Context, 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 {
@@ -555,10 +589,9 @@ func main() {
 						Content: "failed to get schedule, check logs for more info.",
 					},
 				}); err != nil {
-					log.Error().Ctx(ctx).Err(err).Msg("failed to respond to interaction")
+					return fmt.Errorf("failed to respond to interaction: %w", err)
 				}
-				log.Error().Ctx(ctx).Err(err).Msg("failed to get schedule")
+				return fmt.Errorf("failed to get schedule: %w", err)
-				return
 			}
 
 			sb := strings.Builder{}
@@ -588,21 +621,26 @@ func main() {
 				},
 			}); 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
 		},
-		"send-schedule": func(ctx context.Context, s *discordgo.Session, i *discordgo.InteractionCreate) {
+		"send-schedule": func(ctx context.Context, s *discordgo.Session, i *discordgo.InteractionCreate) error {
-			notifier.Send()
+			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) {
+		"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)
@@ -615,37 +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().Ctx(ctx).Err(err).Msg("failed to respond to interaction")
+					return fmt.Errorf("failed to respond to interaction: %w", err)
 				}
-				return
+				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().Ctx(ctx).Err(err).Msg("failed to respond to interaction")
+					return fmt.Errorf("failed to respond to interaction: %w", err)
 				}
-				return
+				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().Ctx(ctx).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
+				return nil
 			}
 
 			userId := i.Member.User.ID
@@ -656,20 +697,22 @@ func main() {
 						Content: "something went wrong recording your absence, check logs for more info.",
 					},
 				}); 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
+				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().Ctx(ctx).Err(err).Msg("failed to respond to interaction")
+				return fmt.Errorf("failed to respond to interaction: %w", err)
 			}
+			return nil
 		},
 	}
 
@@ -688,7 +731,13 @@ func main() {
 	}
 	log.Info().Int("count", len(created)).Dur("startup_latency_ms", time.Since(start)).Msg("registered commands, ready to operate")
 
-	go notifier.NotifyFunc(ctx, func() {
+	go notifier.NotifyFunc(ctx, func(ctx context.Context) {
+		ctx, cancel := context.WithTimeout(ctx, 5*time.Second)
+		defer cancel()
+
+		ctx, span := tracer.Start(ctx, "weekly_notification")
+		defer span.End()
+
 		log.Info().Msg("sending weekly reminder")
 		absentees, err := store.GetAbsentees(ctx, themis.NextMonday())
 		if err != nil {
@@ -704,7 +753,7 @@ 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{
@@ -712,12 +761,16 @@ func main() {
 							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.ChannelMessageSendComplex(channelId, &discordgo.MessageSend{
@@ -731,7 +784,7 @@ func main() {
 
 	<-ctx.Done()
 	log.Info().Msg("context cancelled, exiting")
-	os.Exit(0)
+	store.Close()
 }
 
 func touchDbFile(path string) error {
@@ -762,10 +815,9 @@ func registerHandlers(sess *discordgo.Session, handlers map[string]Handler) {
 		case discordgo.InteractionApplicationCommand:
 			ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
 			defer cancel()
-			ctx = context.WithValue(ctx, "correlation_id", gen.Next())
 
 			if h, ok := handlers[i.ApplicationCommandData().Name]; ok {
-				withLogging(i.ApplicationCommandData().Name, h)(ctx, s, i)
+				_ = inSpan(i.ApplicationCommandData().Name, withLogging(i.ApplicationCommandData().Name, h))(ctx, s, i)
 			}
 		case discordgo.InteractionModalSubmit:
 			ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
@@ -773,16 +825,11 @@ func registerHandlers(sess *discordgo.Session, handlers map[string]Handler) {
 
 			state, err := parseCustomIDState(i.ModalSubmitData().CustomID)
 			if err != nil {
-				log.Error().Ctx(ctx).Err(err).Msg("unexpected error occured while parsing state from custom id, returning early.")
+				log.Error().Ctx(ctx).Err(err).Msg("unexpected error occurred while parsing state from custom id, returning early.")
 				return
 			}
 
-			cid := state.Get("correlation_id")
+			ctx = propagator.Extract(ctx, correlation.UrlValuesCarrier(state))
-			if cid != "" {
-				ctx = context.WithValue(ctx, "correlation_id", cid)
-			} else {
-				ctx = context.WithValue(ctx, "correlation_id", gen.Next())
-			}
 
 			if strings.HasPrefix(i.ModalSubmitData().CustomID, "modal_flush") {
 				sub := i.ModalSubmitData().Components[0].(*discordgo.ActionsRow).Components[0].(*discordgo.TextInput).Value
@@ -790,7 +837,7 @@ func registerHandlers(sess *discordgo.Session, handlers map[string]Handler) {
 				log.Debug().Ctx(ctx).Str("value", sub).Msg("flush modal submitted")
 
 				if sub == "y" || sub == "ye" || sub == "yes" {
-					err := store.Flush(context.Background(), i.Member.User.ID)
+					err := store.Flush(ctx, i.Member.User.ID)
 					msg := "Flushed all claims!"
 					if err != nil {
 						log.Error().Ctx(ctx).Err(err).Msg("failed to flush claims")
@@ -830,19 +877,14 @@ func registerHandlers(sess *discordgo.Session, handlers map[string]Handler) {
 				return
 			}
 
-			cid := state.Get("correlation_id")
+			ctx = propagator.Extract(ctx, correlation.UrlValuesCarrier(state))
-			if cid != "" {
-				ctx = context.WithValue(ctx, "correlation_id", cid)
-			} else {
-				ctx = context.WithValue(ctx, "correlation_id", gen.Next())
-			}
 
 			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(context.TODO(), themis.NextMonday(), userId); err != nil {
+				if err := store.AddAbsence(ctx, themis.NextMonday(), userId); err != nil {
 					if err := s.InteractionRespond(i.Interaction, &discordgo.InteractionResponse{
 						Type: discordgo.InteractionResponseChannelMessageWithSource,
 						Data: &discordgo.InteractionResponseData{
@@ -942,55 +984,57 @@ 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) {
+	return func(ctx context.Context, s *discordgo.Session, i *discordgo.InteractionCreate) error {
 		start := time.Now()
 		logCommandInvocation(ctx, name, s, i)
-		h(ctx, s, i)
+		err := h(ctx, s, i)
-		debugCommandCompletion(ctx, name, time.Since(start), 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) {
-	log.Info().
+	span := trace.SpanFromContext(ctx)
-		Ctx(ctx).
+	span.SetAttributes(
-		Str("userid", i.Member.User.ID).
+		attribute.String("user_id", i.Member.User.ID),
-		Str("username", i.Member.User.Username).
+		attribute.String("username", i.Member.User.Username),
-		Str("command", name).
+		attribute.String("command_name", name),
-		Str("params", func() string {
+	)
-			p := make([]string, 0, len(i.ApplicationCommandData().Options))
+
-			for _, o := range i.ApplicationCommandData().Options {
+	for _, o := range i.ApplicationCommandData().Options {
-				sb := strings.Builder{}
+		switch o.Type {
-				sb.WriteString(o.Name)
+		case discordgo.ApplicationCommandOptionSubCommand, discordgo.ApplicationCommandOptionSubCommandGroup:
-				sb.WriteRune('=')
+			panic("unreachable")
-
+		case discordgo.ApplicationCommandOptionString:
-				switch o.Type {
+			span.SetAttributes(attribute.String(fmt.Sprintf("command_option.%s", o.Name), o.StringValue()))
-				case discordgo.ApplicationCommandOptionSubCommand, discordgo.ApplicationCommandOptionSubCommandGroup:
+		case discordgo.ApplicationCommandOptionInteger:
-					panic("unreachable")
+			span.SetAttributes(attribute.Int64(fmt.Sprintf("command_option.%s", o.Name), o.IntValue()))
-				case discordgo.ApplicationCommandOptionString:
+		case discordgo.ApplicationCommandOptionBoolean:
-					sb.WriteString(o.StringValue())
+			span.SetAttributes(attribute.Bool(fmt.Sprintf("command_option.%s", o.Name), o.BoolValue()))
-				case discordgo.ApplicationCommandOptionInteger:
+		default:
-					sb.WriteString(fmt.Sprint(o.IntValue()))
+			span.SetAttributes(attribute.String(fmt.Sprintf("command_option.%s", o.Name), "unsupported_type"))
-				case discordgo.ApplicationCommandOptionBoolean:
+		}
-					sb.WriteString(fmt.Sprint(o.BoolValue()))
+	}
-				default:
+
-					sb.WriteString("[unsupported type]")
+	log.Info().Ctx(ctx).Msg("command invoked")
-				}
-				p = append(p, sb.String())
-			}
-			return strings.Join(p, ", ")
-		}()).
-		Msg("command invoked")
 }
 
-func debugCommandCompletion(ctx context.Context, name string, dur time.Duration, s *discordgo.Session, i *discordgo.InteractionCreate) {
+func debugCommandCompletion(ctx context.Context, name string, dur time.Duration, err error, s *discordgo.Session, i *discordgo.InteractionCreate) {
-	log.Info().
+	span := trace.SpanFromContext(ctx)
-		Ctx(ctx).
+	if err != nil {
-		Str("userid", i.Member.User.ID).
+		span.SetStatus(codes.Error, err.Error())
-		Str("username", i.Member.User.Username).
+	}
-		Str("command", name).
+	log.Info().Ctx(ctx).Dur("latency_ms", dur).Msg("command completed")
-		Dur("latency_ms", dur).
-		Msg("command completed")
 }
 
 func min(a, b int) int {
@@ -1012,3 +1056,36 @@ func parseCustomIDState(qs string) (url.Values, error) {
 	}
 	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

@@ -2,10 +2,13 @@ package themis
 
 import (
 	"context"
-	"database/sql"
 	"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 {
@@ -20,31 +23,10 @@ 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 (
+const conflictQuery string = `WITH claiming AS (
-//     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 typ = ?
+  WHERE claimables.typ = ?
-  AND name = ?
+  AND claimables.name = ?
 )
 SELECT claimables.province, claims.player, claims.claim_type, claims.val, claims.id
 FROM claims
@@ -53,41 +35,35 @@ INNER JOIN claimables
   AND claims.val = claimables.name
 INNER JOIN claiming
   ON claiming.province = claimables.province
-WHERE claims.userid  IS NOT ?`
+WHERE claims.userid  IS NOT ?;`
 
 func (s *Store) FindConflicts(ctx context.Context, userId, name string, claimType ClaimType) ([]Conflict, error) {
+	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, claimType, name, userId)
-	rows, err := s.db.QueryContext(ctx, `select claims.val, claims.claim_type, claims.player, claimables.province
-from claims
-inner join claimables on claims.val = claimables.name and claims.claim_type = claimables.typ;
-	`)
-	if err != nil {
-		panic(err)
-	}
-
-	res2 := make([]string, 0)
-	for rows.Next() {
-		var name, typ, play string
-		var pro sql.NullString
-		if err := rows.Scan(&name, &typ, &play, &pro); err != nil {
-			panic(err)
-		}
-		res2 = append(res2, fmt.Sprintf("%s, %s, %s, %s", name, typ, play, pro.String))
-	}
-
-	log.Debug().Strs("list", res2).Msg("existing claims")
-	// =========================================================================
-
-	rows, err = stmt.QueryContext(ctx, claimTypeToColumn[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() {
@@ -100,6 +76,8 @@ inner join claimables on claims.val = claimables.name and claims.claim_type = cl
 		)
 		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)
+	id, err := store.Claim(context.Background(), "000000000000000001", "foo", "Bordeaux", CLAIM_TYPE_TRADE)
-	assert.NoError(t, err)
+	require.NoError(t, err)
 
 	type args struct {
 		ctx       context.Context
@@ -28,21 +33,21 @@ func TestStore_FindConflicts(t *testing.T) {
 		want    []Conflict
 		wantErr bool
 	}{
-		// {
-		// 	name: "same-player",
-		// 	args: args{
-		// 		context.TODO(),
-		// 		"000000000000000001",
-		// 		"France",
-		// 		CLAIM_TYPE_REGION,
-		// 	},
-		// 	want:    []Conflict{},
-		// 	wantErr: false,
-		// },
 		{
-			name: "overlapping",
+			name: "same-player",
 			args: args{
 				context.TODO(),
+				"000000000000000001",
+				"France",
+				CLAIM_TYPE_REGION,
+			},
+			want:    []Conflict{},
+			wantErr: false,
+		},
+		{
+			name: "overlapping",
+			args: args{
+				context.Background(),
 				"000000000000000002",
 				"Iberia",
 				CLAIM_TYPE_REGION,
@@ -54,17 +59,17 @@ func TestStore_FindConflicts(t *testing.T) {
 			},
 			wantErr: false,
 		},
-		// {
+		{
-		// 	name: "no-overlap",
+			name: "no-overlap",
-		// 	args: args{
+			args: args{
-		// 		context.TODO(),
+				context.TODO(),
-		// 		"000000000000000002",
+				"000000000000000002",
-		// 		"Scandinavia",
+				"Scandinavia",
-		// 		CLAIM_TYPE_REGION,
+				CLAIM_TYPE_REGION,
-		// 	},
+			},
-		// 	want:    []Conflict{},
+			want:    []Conflict{},
-		// 	wantErr: false,
+			wantErr: false,
-		// },
+		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {

correlation/compat/zerolog/compat.go

@@ -1,16 +0,0 @@
-package zerolog
-
-import (
-	zl "github.com/rs/zerolog"
-	"go.wperron.io/themis/correlation"
-)
-
-type CorrelationHook struct{}
-
-func (h CorrelationHook) Run(e *zl.Event, level zl.Level, msg string) {
-	ctx := e.GetCtx()
-	c := correlation.FromContext(ctx)
-	if c != nil {
-		e.Stringer("correlation_id", c)
-	}
-}

correlation/correlation.go

@@ -1,47 +0,0 @@
-package correlation
-
-import (
-	"context"
-	"encoding/hex"
-)
-
-const Key string = "correlation_id"
-
-var Empty CorrelationID = CorrelationID{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}
-
-// Correlation ID is a byte array of length 16
-type CorrelationID []byte
-
-func (ci CorrelationID) String() string {
-	if ci == nil {
-		return hex.EncodeToString(Empty)
-	}
-	return hex.EncodeToString(ci)
-}
-
-func FromContext(ctx context.Context) CorrelationID {
-	if v := ctx.Value("correlation_id"); v != nil {
-		if c, ok := v.(CorrelationID); ok {
-			return c
-		}
-	}
-	return nil
-}
-
-type Sequencer interface {
-	Next() []byte
-}
-
-type Generator struct {
-	seq Sequencer
-}
-
-func NewGenerator(seq Sequencer) *Generator {
-	return &Generator{
-		seq: seq,
-	}
-}
-
-func (g *Generator) Next() CorrelationID {
-	return CorrelationID(g.seq.Next())
-}

correlation/correlation_test.go

@@ -1,18 +0,0 @@
-package correlation
-
-import (
-	"math/rand"
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-)
-
-func TestGeneratorNext(t *testing.T) {
-	rand.Seed(0)
-	seq := &MathRandSequencer{}
-	gen := NewGenerator(seq)
-
-	assert.Equal(t, "0194fdc2fa2ffcc041d3ff12045b73c8", gen.Next().String())
-	assert.Equal(t, "6e4ff95ff662a5eee82abdf44a2d0b75", gen.Next().String())
-	assert.Equal(t, "fb180daf48a79ee0b10d394651850fd4", gen.Next().String())
-}

correlation/crypto.go

@@ -1,19 +0,0 @@
-package correlation
-
-import "crypto/rand"
-
-type CryptoRandSequencer struct{}
-
-func (crs *CryptoRandSequencer) Next() []byte {
-	buf := make([]byte, 16)
-	read, err := rand.Read(buf)
-	if err != nil {
-		panic("not implemented")
-	}
-
-	if read != 16 {
-		panic("todo")
-	}
-
-	return buf
-}

correlation/math.go

@@ -1,18 +0,0 @@
-package correlation
-
-import "math/rand"
-
-type MathRandSequencer struct{}
-
-func (mrs *MathRandSequencer) Next() []byte {
-	buf := make([]byte, 16)
-	read, err := rand.Read(buf)
-	if err != nil {
-		panic("not implemented")
-	}
-
-	if read != 16 {
-		panic("todo")
-	}
-	return buf
-}

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)
+}

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"

fmt.go

@@ -7,13 +7,23 @@ import (
 	"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(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)
 	}
 
@@ -37,6 +47,8 @@ func FormatRows(ctx context.Context, 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)
 		}
 

fmt_test.go

@@ -2,14 +2,19 @@ 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'")
@@ -27,7 +32,9 @@ 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")
@@ -46,7 +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 1.19
+go 1.21.1
 
 require (
 	github.com/bwmarrin/discordgo v0.26.1
-	github.com/golang-migrate/migrate/v4 v4.16.2
+	github.com/golang-migrate/migrate/v4 v4.17.0
-	github.com/mattn/go-sqlite3 v1.14.16
+	github.com/mattn/go-sqlite3 v1.14.19
 	github.com/rs/zerolog v1.31.0
-	github.com/stretchr/testify v1.8.1
+	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 (
@@ -18,8 +59,10 @@ require (
 	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/crypto v0.18.0 // indirect
-	golang.org/x/sys v0.12.0 // 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/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=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
+github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
+github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
+github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
+github.com/go-kit/log v0.2.1 h1:MRVx0/zhvdseW+Gza6N9rVzU/IVzaeE1SFI4raAhmBU=
+github.com/go-kit/log v0.2.1/go.mod h1:NwTd00d/i8cPZ3xOwwiv2PO5MOcx78fFErGNcVmBjv0=
+github.com/go-logfmt/logfmt v0.5.1 h1:otpy5pqBCBZ1ng9RQ0dPu4PN7ba75Y/aA+UpowDyNVA=
+github.com/go-logfmt/logfmt v0.5.1/go.mod h1:WYhtIu8zTZfxdn5+rREduYbwxfcBr/Vr6KEVveWlfTs=
+github.com/go-logr/logr v1.2.2/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
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+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/20240105153349_create_claimables_view.up.sql

@@ -3,7 +3,7 @@ create view if not exists claimables as
         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_node' as typ, provinces.trade_node as name, name as province, id
+    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

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

@@ -6,6 +6,7 @@ import (
 	"time"
 
 	"github.com/rs/zerolog/log"
+	"go.opentelemetry.io/otel/trace"
 )
 
 var loc *time.Location
@@ -15,10 +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,
 	}
@@ -45,8 +46,11 @@ func (n *Notifier) Start(ctx context.Context) {
 		log.Debug().Msg("context deadline exceeded, exiting notifier")
 		return
 	default:
-		log.Debug().Msg("notifier tick")
+		log.Debug().Str("parent", "ticker").Msg("notifier tick")
-		n.c <- struct{}{}
+		ctx, span := tracer.Start(ctx, "notifier_tick", trace.WithNewRoot())
+
+		n.c <- ctx
+		span.End()
 	}
 
 	ticker := time.NewTicker(time.Hour * 24 * 7)
@@ -56,27 +60,34 @@ func (n *Notifier) Start(ctx context.Context) {
 			log.Debug().Msg("context deadline exceeded, exiting notifier")
 			return
 		case <-ticker.C:
-			log.Debug().Msg("notifier tick")
+			log.Debug().Str("parent", "ticker").Msg("notifier tick")
-			n.c <- struct{}{}
+			ctx, span := tracer.Start(ctx, "notifier_tick", trace.WithNewRoot())
+
+			n.c <- ctx
+			span.End()
 		}
 		time.Sleep(time.Second)
 	}
 }
 
 // Trigger the notifier manually. Should be used for testing purposes only.
-func (n *Notifier) Send() {
+func (n *Notifier) Send(ctx context.Context) {
-	n.c <- struct{}{}
+	log.Debug().Str("parent", "trigger").Ctx(ctx).Msg("notifier tick")
+	n.c <- ctx
 }
 
-func (n *Notifier) NotifyFunc(ctx context.Context, f func()) {
+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:
+		case innerCtx := <-n.c:
-			log.Debug().Msg("tick received, notifying function")
+			innerCtx, span := tracer.Start(innerCtx, "notify_func")
-			f()
+			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"
@@ -13,23 +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/log"
+	"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 {
+var tracer trace.Tracer
-	db *sql.DB
+
+func init() {
+	tp := otel.GetTracerProvider()
+	tracer = tp.Tracer("themis")
 }
 
-func NewStore(conn string) (*Store, error) {
+type Store struct {
-	log.Debug().Str("connection_string", conn).Msg("opening sqlite3 database")
+	db     *sql.DB
-	db, err := sql.Open("sqlite3", conn)
+	logger zerolog.Logger
-	if err != nil {
+}
-		return nil, fmt.Errorf("failed to open database: %w", err)
-	}
 
+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)
@@ -55,24 +61,35 @@ func NewStore(conn string) (*Store, error) {
 		return nil, fmt.Errorf("failed to get database migration version: %w", err)
 	}
 
-	log.Debug().Uint("current_version", ver).Bool("dirty", dirty).Msg("running database migrations")
+	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 {
-	log.Debug().Msg("closing database")
+	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) {
-	log.Debug().
+	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("provice", province).
+		Str("province", province).
 		Stringer("claim_type", claimType).
 		Msg("inserting claim")
 	audit := &AuditableEvent{
@@ -84,6 +101,8 @@ func (s *Store) Claim(ctx context.Context, userId, player, province string, clai
 	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
@@ -91,50 +110,66 @@ func (s *Store) Claim(ctx context.Context, userId, player, province string, clai
 	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 {
-		log.Debug().Ctx(ctx).Int("len", len(conflicts)).Msg("found conflicts")
+		s.logger.Debug().Ctx(ctx).Int("len", len(conflicts)).Msg("found conflicts")
-		audit.err = err
+		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)
 	}
 
@@ -142,25 +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) {
-	log.Debug().Ctx(ctx).Stringer("claim_type", claimType).Strs("search_terms", search).Msg("listing available entries")
+	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)
 	}
 
@@ -168,6 +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)
@@ -177,14 +231,26 @@ func (s *Store) ListAvailability(ctx context.Context, claimType ClaimType, searc
 }
 
 func (s *Store) ListClaims(ctx context.Context) ([]Claim, error) {
-	log.Debug().Ctx(ctx).Msg("listing all claims currently in database")
+	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)
 	}
 
@@ -194,10 +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
@@ -217,17 +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) {
-	log.Debug().Ctx(ctx).Int("id", ID).Msg("describing claim")
+	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)
 
@@ -235,24 +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)
 	}
 
@@ -261,6 +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)
@@ -273,7 +366,16 @@ func (s *Store) DescribeClaim(ctx context.Context, ID int) (ClaimDetail, error)
 }
 
 func (s *Store) DeleteClaim(ctx context.Context, ID int, userId string) error {
-	log.Debug().Ctx(ctx).Str("userid", userId).Int("id", ID).Msg("deleting claim")
+	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,
@@ -283,37 +385,57 @@ func (s *Store) DeleteClaim(ctx context.Context, ID int, userId string) error {
 	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) {
-	log.Debug().Ctx(ctx).Msg("counting all claims and unique users")
+	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)
 	}
 
@@ -321,7 +443,14 @@ func (s *Store) CountClaims(ctx context.Context) (total, uniquePlayers int, err
 }
 
 func (s *Store) Flush(ctx context.Context, userId string) error {
-	log.Debug().Ctx(ctx).Str("initiated_by", userId).Msg("flushing all currently help claims")
+	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,
@@ -331,6 +460,8 @@ func (s *Store) Flush(ctx context.Context, userId string) error {
 	_, 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 {
@@ -97,16 +101,20 @@ func TestStore_Claim(t *testing.T) {
 				t.Errorf("Store.Claim() error = %v, wantErr %v", err, tt.wantErr)
 			}
 
-			ae, err := store.LastOf(context.TODO(), EventClaim)
+			if !tt.wantErr {
-			require.NoError(t, err)
+				ae, err := store.LastOf(context.TODO(), EventClaim)
-			assert.Greater(t, ae.Id, lastAudit)
+				require.NoError(t, err)
-			lastAudit = ae.Id
+				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)
@@ -122,22 +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
@@ -145,15 +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
@@ -185,7 +195,9 @@ func TestDeleteClaim(t *testing.T) {
 }
 
 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)
@@ -201,7 +213,9 @@ func TestDescribeClaim(t *testing.T) {
 }
 
 func TestCountClaims(t *testing.T) {
-	store, err := NewStore(fmt.Sprintf(TEST_CONN_STRING_PATTERN, "TestCountClaims"))
+	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)
@@ -217,7 +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)