Made the fetcher a Fetcher type with per-source config, and ran it in job-search serve

fetcher.Run(ctx, conf, since) becomes New(&conf.Sources, opts...) and
Run(ctx, since). Each worker now takes only its own source's config, and
Run starts each one through a closure that binds it. Cancelling ctx stops
the workers through the Fetcher's background context, and Run always waits
for every worker before returning their joined errors.

The findatender client no longer holds the configuration: New takes only
the API root, ReloadConfig is gone, and request tracing follows
logging.IsDebugEnabled(). The FindAOpportunity worker is now FindATender.

job-search serve runs the fetcher alongside the HTTP server. A source that
fails stops the server, and the server stopping stops the sources; with no
sources enabled the server keeps running. fetcher service and fetcher
fts-once use the new APIs.

internal/cli/fetch/fts_once.go

@@ -79,7 +79,7 @@ func commandFTSOnce(opts *cli.Options) *cobra.Command {
 			if conf.Sources.FindATender.APIRoot == "" {
 				return errors.New("sources.find_a_tender.api_root is not set")
 			}
-			findATender := findatender.New(conf, conf.Sources.FindATender.APIRoot)
+			findATender := findatender.New(conf.Sources.FindATender.APIRoot)
 			defer findATender.Shutdown()
 
 			ignoreRateLimit, _ := cmd.Flags().GetBool("ignore-rate-limit")

internal/cli/fetch/service.go

@@ -53,7 +53,7 @@ func commandService(opts *cli.Options) *cobra.Command {
 				stop()
 			}()
 
-			return fetcher.Run(ctx, conf, since)
+			return fetcher.New(&conf.Sources).Run(ctx, since)
 		},
 	}
 	cmd.Flags().Time(

internal/cli/serve/command.go

@@ -11,22 +11,27 @@ import (
 	"strconv"
 	"strings"
 	"syscall"
+	"time"
 
 	"github.com/spf13/cobra"
 
 	"git.avsdev.uk/Go/job-search/internal/cli"
+	"git.avsdev.uk/Go/job-search/internal/fetcher"
 	"git.avsdev.uk/Go/job-search/internal/logging"
 	"git.avsdev.uk/Go/job-search/internal/server"
 )
 
-// NewCommand returns the serve command, which serves the frontend, the REST
-// API and the WebSocket endpoint.
+// NewCommand returns the serve command, which serves the REST API and the
+// WebSocket endpoint, and runs a worker for every enabled source.
 func NewCommand(opts *cli.Options) *cobra.Command {
 	cmd := &cobra.Command{
 		Use:   "serve",
-		Short: "Serve the frontend (/), REST API (/api) and WebSocket (/ws)",
-		Long: `Serve the embedded Vite frontend, the REST API under /api and the
-WebSocket endpoint under /ws.`,
+		Short: "Serve the REST API (/api) and WebSocket (/ws), and fetch from sources",
+		Long: `Serve the REST API under /api and the WebSocket endpoint under /ws.
+
+It also runs a worker for every enabled source, as fetcher service does. A
+source that stops with an error stops the server too, and the server
+stopping stops the sources.`,
 		PersistentPreRun: func(cmd *cobra.Command, args []string) {
 			slog.Debug("command persistent pre-run", "command", "serve")
 		},
@@ -108,7 +113,27 @@ WebSocket endpoint under /ws.`,
 				return err
 			}
 
-			return appServer.Run(ctx)
+			// runCtx stops whichever of the server and the sources is still
+			// running once the other has stopped.
+			runCtx, cancelRun := context.WithCancel(ctx)
+			defer cancelRun()
+
+			sourceFetcher := fetcher.New(&conf.Sources)
+			fetcherDone := make(chan error, 1)
+			go func() {
+				fetchErr := sourceFetcher.Run(runCtx, time.Time{})
+				// Only a failure stops the server: with no sources enabled, Run
+				// returns nil straight away.
+				if fetchErr != nil {
+					cancelRun()
+				}
+				fetcherDone <- fetchErr
+			}()
+
+			serverErr := appServer.Run(runCtx)
+			cancelRun()
+
+			return errors.Join(serverErr, <-fetcherDone)
 		},
 	}
 

internal/fetcher/fetcher.go

@@ -16,30 +16,25 @@ import (
 // to fetch; it wraps util.ErrWorkerNoWork.
 var ErrNoNewReleases = fmt.Errorf("%w: no new releases", util.ErrWorkerNoWork)
 
-// Option configures Run.
-type Option func(*options)
-
-// options holds the settings Options change.
-type options struct {
-	log *slog.Logger
-}
+// Option configures a Fetcher.
+type Option func(*Fetcher)
 
 // WithLogger makes Run, its workers and their clients log to logger instead
 // of slog.Default().
 func WithLogger(logger *slog.Logger) Option {
-	return func(opts *options) {
-		opts.log = logger
+	return func(f *Fetcher) {
+		f.log = logger
 	}
 }
 
 // logger returns the logger Run logs to: the given one, or slog.Default().
 // It isn't tagged here, as it is also given to the clients the workers
 // create, which add their own component; see tagged.
-func (opts options) logger() *slog.Logger {
-	if opts.log == nil {
+func (f *Fetcher) logger() *slog.Logger {
+	if f.log == nil {
 		return slog.Default()
 	}
-	return opts.log
+	return f.log
 }
 
 // tagged returns logger tagged with the fetcher's component, for the lines
@@ -48,35 +43,52 @@ func tagged(logger *slog.Logger) *slog.Logger {
 	return logger.With("component", "fetcher")
 }
 
-// runFunc runs one source's worker until ctx is cancelled. logger is
-// untagged: the worker tags its own lines with tagged, and passes logger as
-// it is to any client it creates.
-type runFunc func(
-	ctx context.Context,
-	logger *slog.Logger,
-	conf *config.JobSearchConfig,
-	since time.Time,
-) error
+// Fetcher runs a worker for each enabled source. Create it with New and
+// start it with Run.
+type Fetcher struct {
+	conf    *config.JSCSources
+	log     *slog.Logger
+	started time.Time
+
+	// backgroundCtx is the context the workers run under. backgroundCancel
+	// stops them: Run calls it when its ctx is cancelled, when a worker
+	// fails, and as it returns.
+	backgroundCtx    context.Context
+	backgroundCancel context.CancelFunc
+}
+
+// New returns a Fetcher for the sources conf configures. It logs to
+// slog.Default() unless given WithLogger.
+func New(conf *config.JSCSources, opts ...Option) *Fetcher {
+	fetcher := &Fetcher{
+		conf:    conf,
+		started: time.Now(),
+	}
+	for _, option := range opts {
+		option(fetcher)
+	}
+
+	fetcher.backgroundCtx, fetcher.backgroundCancel = context.WithCancel(
+		context.Background(),
+	)
+
+	return fetcher
+}
 
 // Run starts a worker for each enabled source and blocks until every worker
 // has stopped. Workers stop when ctx is cancelled, or when any worker stops
 // with an error, which starts a shutdown of all of them. The errors are
-// logged as they happen and returned joined; nil means a clean shutdown. It
-// logs to slog.Default() unless given WithLogger.
-func Run(
-	ctx context.Context,
-	conf *config.JobSearchConfig,
-	since time.Time,
-	opts ...Option,
-) error {
-	ctx, cancel := context.WithCancel(ctx)
-	defer cancel()
+// logged as they happen and returned joined; nil means a clean shutdown. Run
+// cancels the Fetcher's background context as it returns, so it can only be
+// called once.
+func (f *Fetcher) Run(ctx context.Context, since time.Time) error {
+	defer f.backgroundCancel()
 
-	var settings options
-	for _, opt := range opts {
-		opt(&settings)
-	}
-	logger := settings.logger()
+	// Cancelling ctx stops the workers, through the background context.
+	stopAfter := context.AfterFunc(ctx, f.backgroundCancel)
+	defer stopAfter()
+
+	logger := f.logger()
 
 	var (
 		wg   sync.WaitGroup
@@ -84,11 +96,14 @@ func Run(
 		errs []error
 	)
 
-	start := func(name string, run runFunc) {
+	// start runs one source's worker until f.backgroundCtx is cancelled. Each
+	// worker is given logger untagged: it tags its own lines with tagged, and
+	// passes logger as it is to any client it creates.
+	start := func(name string, run func(ctx context.Context) error) {
 		wg.Add(1)
 		go func() {
 			defer wg.Done()
-			if err := run(ctx, logger, conf, since); err != nil {
+			if err := run(f.backgroundCtx); err != nil {
 				tagged(logger).Error(
 					"source stopped, shutting down",
 					"source", name,
@@ -97,21 +112,29 @@ func Run(
 				mu.Lock()
 				errs = append(errs, fmt.Errorf("%s: %w", name, err))
 				mu.Unlock()
-				cancel()
+				f.backgroundCancel()
 			}
 		}()
 	}
 
-	if conf.Sources.FindATender.Enabled {
-		start("FindATender", runFindAOpportunity)
+	if f.conf.FindATender.Enabled {
+		start("FindATender", func(ctx context.Context) error {
+			return runFindATender(ctx, logger, &f.conf.FindATender, since)
+		})
 	}
-	if conf.Sources.FTSMock.Enabled {
-		start("FTSMock", runFTSMock)
+	if f.conf.FTSMock.Enabled {
+		start("FTSMock", func(ctx context.Context) error {
+			return runFTSMock(ctx, logger, &f.conf.FTSMock, since)
+		})
 	}
-	if conf.Sources.Sleeper.Enabled {
-		start("Sleeper", runSleeper)
+	if f.conf.Sleeper.Enabled {
+		start("Sleeper", func(ctx context.Context) error {
+			return runSleeper(ctx, logger, &f.conf.Sleeper, since)
+		})
 	}
 
+	// Every worker has stopped once Wait returns, so errs is no longer
+	// written.
 	wg.Wait()
 
 	return errors.Join(errs...)

internal/fetcher/fetcher_test.go

@@ -58,18 +58,22 @@ func ftsServer(
 	return srv, &hits
 }
 
-func confFor(apiRoot string) *config.JobSearchConfig {
-	conf := &config.JobSearchConfig{}
-	conf.Sources.FindATender.APIRoot = apiRoot
-	conf.Sources.FTSMock.APIRoot = apiRoot
-	return conf
+// fetchFunc fetches from one source at apiRoot.
+type fetchFunc func(ctx context.Context, apiRoot string, since time.Time) error
+
+// fetchers are the sources' fetch functions, each given only its API root.
+var fetchers = map[string]fetchFunc{
+	"FindATender": func(ctx context.Context, apiRoot string, since time.Time) error {
+		conf := &config.JSCSourceFindATender{APIRoot: apiRoot}
+		return fetchFindATender(ctx, slog.Default(), conf, since)
+	},
+	"FTSMock": func(ctx context.Context, apiRoot string, since time.Time) error {
+		conf := &config.JSCSourceFTSMock{APIRoot: apiRoot}
+		return fetchFTSMock(ctx, slog.Default(), conf, since)
+	},
 }
 
 func TestFetchFunctions(t *testing.T) {
-	fetchers := map[string]runFunc{
-		"FindAOpportunity": fetchFindAOpportunity,
-		"FTSMock":          fetchFTSMock,
-	}
 	tests := []struct {
 		name    string
 		status  int
@@ -99,10 +103,7 @@ func TestFetchFunctions(t *testing.T) {
 			t.Run(fname+"/"+tc.name, func(t *testing.T) {
 				srv, hits := ftsServer(t, tc.status, tc.body)
 				err := fetch(
-					context.Background(),
-					slog.Default(),
-					confFor(srv.URL),
-					time.Now().Add(-time.Hour),
+					context.Background(), srv.URL, time.Now().Add(-time.Hour),
 				)
 				if !tc.check(err) {
 					t.Fatalf("err = %v, want %s", err, tc.wantErr)
@@ -115,23 +116,44 @@ func TestFetchFunctions(t *testing.T) {
 	}
 }
 
-func TestFetchUsesConfiguredAPIRoot(t *testing.T) {
-	fat, fatHits := ftsServer(t, http.StatusOK, emptyPackage)
-	mock, mockHits := ftsServer(t, http.StatusOK, emptyPackage)
-	conf := &config.JobSearchConfig{}
-	conf.Sources.FindATender.APIRoot = fat.URL
-	conf.Sources.FTSMock.APIRoot = mock.URL
+// Run gives each worker its own source's configuration: with only one source
+// enabled, only its API root is called.
+func TestRunUsesEachSourcesAPIRoot(t *testing.T) {
+	for _, enabled := range []string{"FindATender", "FTSMock"} {
+		fat, fatHits := ftsServer(t, http.StatusOK, emptyPackage)
+		mock, mockHits := ftsServer(t, http.StatusOK, emptyPackage)
+		sources := &config.JSCSources{}
+		sources.FindATender.APIRoot = fat.URL
+		sources.FindATender.Interval = time.Hour
+		sources.FTSMock.APIRoot = mock.URL
+		sources.FTSMock.Interval = time.Hour
+		wanted, other := fatHits, mockHits
+		if enabled == "FindATender" {
+			sources.FindATender.Enabled = true
+		} else {
+			sources.FTSMock.Enabled = true
+			wanted, other = mockHits, fatHits
+		}
 
-	fetchFindAOpportunity(context.Background(), slog.Default(), conf, time.Time{})
-	if fatHits.Load() != 1 || mockHits.Load() != 0 {
-		t.Fatalf(
-			"FindAOpportunity hits: fat=%d mock=%d", fatHits.Load(), mockHits.Load(),
-		)
-	}
+		ctx, cancel := context.WithCancel(context.Background())
+		done := make(chan error, 1)
+		go func() {
+			done <- New(sources).Run(ctx, time.Time{})
+		}()
 
-	fetchFTSMock(context.Background(), slog.Default(), conf, time.Time{})
-	if fatHits.Load() != 1 || mockHits.Load() != 1 {
-		t.Fatalf("FTSMock hits: fat=%d mock=%d", fatHits.Load(), mockHits.Load())
+		deadline := time.Now().Add(5 * time.Second)
+		for wanted.Load() == 0 && time.Now().Before(deadline) {
+			time.Sleep(5 * time.Millisecond)
+		}
+		cancel()
+		<-done
+
+		if wanted.Load() == 0 || other.Load() != 0 {
+			t.Errorf(
+				"%s enabled: its root hit %d times, the other's %d; want >0 and 0",
+				enabled, wanted.Load(), other.Load(),
+			)
+		}
 	}
 }
 
@@ -139,9 +161,8 @@ func TestFetchCancelled(t *testing.T) {
 	ctx, cancel := context.WithCancel(context.Background())
 	cancel()
 	// Unroutable root: the request should never be waited on.
-	conf := confFor("http://192.0.2.1:9")
 	start := time.Now()
-	err := fetchFTSMock(ctx, slog.Default(), conf, time.Time{})
+	err := fetchers["FTSMock"](ctx, "http://192.0.2.1:9", time.Time{})
 	if !errors.Is(err, context.Canceled) {
 		t.Fatalf("err = %v, want context.Canceled", err)
 	}
@@ -175,9 +196,8 @@ func TestSleepCompletes(t *testing.T) {
 // one holds shutdown open until the worker's shutdown timeout.
 func TestRunSleeperShutdown(t *testing.T) {
 	for _, block := range []bool{false, true} {
-		conf := &config.JobSearchConfig{}
-		conf.Sources.Sleeper.Interval = time.Hour
-		conf.Sources.Sleeper.BlockShutdown = block
+		conf := &config.JSCSourceSleeper{BlockShutdown: block}
+		conf.Interval = time.Hour
 
 		ctx, cancel := context.WithCancel(context.Background())
 		done := make(chan struct{})
@@ -202,17 +222,24 @@ func TestRunSleeperShutdown(t *testing.T) {
 }
 
 func TestRunWorkersRejectZeroInterval(t *testing.T) {
-	conf := &config.JobSearchConfig{}
-	runs := map[string]runFunc{
-		"FindAOpportunity": runFindAOpportunity,
-		"FTSMock":          runFTSMock,
-		"Sleeper":          runSleeper,
+	ctx, logger := context.Background(), slog.Default()
+	runs := map[string]func() error{
+		"FindATender": func() error {
+			conf := &config.JSCSourceFindATender{APIRoot: "http://127.0.0.1:1"}
+			return runFindATender(ctx, logger, conf, time.Time{})
+		},
+		"FTSMock": func() error {
+			conf := &config.JSCSourceFTSMock{APIRoot: "http://127.0.0.1:1"}
+			return runFTSMock(ctx, logger, conf, time.Time{})
+		},
+		"Sleeper": func() error {
+			return runSleeper(ctx, logger, &config.JSCSourceSleeper{}, time.Time{})
+		},
 	}
 	for name, run := range runs {
-		if err := run(
-			context.Background(), slog.Default(), conf, time.Time{},
-		); err == nil {
-			t.Errorf("%s: expected an error for a zero interval", name)
+		err := run()
+		if err == nil || !strings.Contains(err.Error(), "interval") {
+			t.Errorf("%s: err = %v; want an error for a zero interval", name, err)
 		}
 	}
 }
@@ -227,13 +254,13 @@ func TestRunLogsSourceErrors(t *testing.T) {
 	})
 
 	// A zero interval makes each worker fail straight away.
-	conf := &config.JobSearchConfig{}
-	conf.Sources.FindATender.Enabled = true
-	conf.Sources.FindATender.APIRoot = "http://127.0.0.1:1"
-	conf.Sources.FTSMock.Enabled = true
-	conf.Sources.FTSMock.APIRoot = "http://127.0.0.1:1"
-	conf.Sources.Sleeper.Enabled = true
-	err := Run(context.Background(), conf, time.Time{})
+	sources := &config.JSCSources{}
+	sources.FindATender.Enabled = true
+	sources.FindATender.APIRoot = "http://127.0.0.1:1"
+	sources.FTSMock.Enabled = true
+	sources.FTSMock.APIRoot = "http://127.0.0.1:1"
+	sources.Sleeper.Enabled = true
+	err := New(sources).Run(context.Background(), time.Time{})
 
 	for _, name := range []string{"FindATender", "FTSMock", "Sleeper"} {
 		if !strings.Contains(buf.String(), "source="+name) {
@@ -256,24 +283,26 @@ func TestRunMissingAPIRoot(t *testing.T) {
 	quiet := slog.New(slog.DiscardHandler)
 	tests := []struct {
 		name   string
-		enable func(*config.JobSearchConfig)
+		enable func(*config.JSCSources)
 		key    string
 	}{
-		{"find_a_tender", func(conf *config.JobSearchConfig) {
-			conf.Sources.FindATender.Enabled = true
-			conf.Sources.FindATender.Interval = time.Hour
+		{"find_a_tender", func(sources *config.JSCSources) {
+			sources.FindATender.Enabled = true
+			sources.FindATender.Interval = time.Hour
 		}, "sources.find_a_tender.api_root"},
-		{"fts_mock", func(conf *config.JobSearchConfig) {
-			conf.Sources.FTSMock.Enabled = true
-			conf.Sources.FTSMock.Interval = time.Hour
+		{"fts_mock", func(sources *config.JSCSources) {
+			sources.FTSMock.Enabled = true
+			sources.FTSMock.Interval = time.Hour
 		}, "sources.fts_mock.api_root"},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			conf := &config.JobSearchConfig{}
-			tt.enable(conf)
+			sources := &config.JSCSources{}
+			tt.enable(sources)
 
-			err := Run(context.Background(), conf, time.Time{}, WithLogger(quiet))
+			err := New(sources, WithLogger(quiet)).Run(
+				context.Background(), time.Time{},
+			)
 			if err == nil || !strings.Contains(err.Error(), tt.key) {
 				t.Errorf("Run = %v; want an error naming %s", err, tt.key)
 			}
@@ -284,9 +313,8 @@ func TestRunMissingAPIRoot(t *testing.T) {
 func TestRunNoSourcesEnabled(t *testing.T) {
 	done := make(chan struct{})
 	go func() {
-		if err := Run(
-			context.Background(), &config.JobSearchConfig{}, time.Time{},
-		); err != nil {
+		err := New(&config.JSCSources{}).Run(context.Background(), time.Time{})
+		if err != nil {
 			t.Errorf("Run = %v; want nil", err)
 		}
 		close(done)
@@ -303,16 +331,16 @@ func TestRunNoSourcesEnabled(t *testing.T) {
 // cancelled.
 func TestRunShutsDownOnWorkerError(t *testing.T) {
 	mock, mockHits := ftsServer(t, http.StatusOK, emptyPackage)
-	conf := &config.JobSearchConfig{}
-	conf.Sources.FTSMock.Enabled = true
-	conf.Sources.FTSMock.Interval = time.Hour
-	conf.Sources.FTSMock.APIRoot = mock.URL
+	sources := &config.JSCSources{}
+	sources.FTSMock.Enabled = true
+	sources.FTSMock.Interval = time.Hour
+	sources.FTSMock.APIRoot = mock.URL
 	// The sleeper fails straight away: a zero interval is invalid.
-	conf.Sources.Sleeper.Enabled = true
+	sources.Sleeper.Enabled = true
 
 	done := make(chan error, 1)
 	go func() {
-		done <- Run(context.Background(), conf, time.Now().Add(-time.Hour))
+		done <- New(sources).Run(context.Background(), time.Now().Add(-time.Hour))
 	}()
 
 	select {
@@ -337,20 +365,21 @@ func TestRunShutsDownOnWorkerError(t *testing.T) {
 func TestRunEnabledSources(t *testing.T) {
 	fat, fatHits := ftsServer(t, http.StatusOK, onePackage)
 	mock, mockHits := ftsServer(t, http.StatusOK, emptyPackage)
-	conf := &config.JobSearchConfig{}
-	conf.Sources.FindATender.Enabled = true
-	conf.Sources.FindATender.Interval = time.Hour
-	conf.Sources.FindATender.APIRoot = fat.URL
-	conf.Sources.FTSMock.Enabled = true
-	conf.Sources.FTSMock.Interval = time.Hour
-	conf.Sources.FTSMock.APIRoot = mock.URL
-	conf.Sources.Sleeper.Enabled = true
-	conf.Sources.Sleeper.Interval = time.Hour
+	sources := &config.JSCSources{}
+	sources.FindATender.Enabled = true
+	sources.FindATender.Interval = time.Hour
+	sources.FindATender.APIRoot = fat.URL
+	sources.FTSMock.Enabled = true
+	sources.FTSMock.Interval = time.Hour
+	sources.FTSMock.APIRoot = mock.URL
+	sources.Sleeper.Enabled = true
+	sources.Sleeper.Interval = time.Hour
 
 	ctx, cancel := context.WithCancel(context.Background())
 	done := make(chan struct{})
 	go func() {
-		if err := Run(ctx, conf, time.Now().Add(-time.Hour)); err != nil {
+		err := New(sources).Run(ctx, time.Now().Add(-time.Hour))
+		if err != nil {
 			t.Errorf("Run = %v; want nil after cancellation", err)
 		}
 		close(done)

internal/fetcher/worker_findatender.go

@@ -12,43 +12,43 @@ import (
 	"git.avsdev.uk/Go/job-search/internal/util"
 )
 
-// runFindAOpportunity polls Find a Tender every configured interval until ctx
+// runFindATender polls Find a Tender every configured interval until ctx
 // is cancelled.
-func runFindAOpportunity(
+func runFindATender(
 	ctx context.Context,
 	logger *slog.Logger,
-	conf *config.JobSearchConfig,
+	conf *config.JSCSourceFindATender,
 	since time.Time,
 ) error {
-	if conf.Sources.FindATender.APIRoot == "" {
+	if conf.APIRoot == "" {
 		return errors.New("fetcher: sources.find_a_tender.api_root is not set")
 	}
 
 	worker := util.Worker{
 		Logger:   tagged(logger),
-		Name:     "FindAOpportunity",
-		Interval: conf.Sources.FindATender.Interval,
+		Name:     "FindATender",
+		Interval: conf.Interval,
 		Task: func(ctx context.Context, since time.Time) error {
-			return fetchFindAOpportunity(ctx, logger, conf, since)
+			return fetchFindATender(ctx, logger, conf, since)
 		},
 	}
 	return worker.Run(ctx, since)
 }
 
-// fetchFindAOpportunity fetches everything updated since since from Find a
+// fetchFindATender fetches everything updated since since from Find a
 // Tender. Finding nothing returns ErrNoNewReleases, so the worker still moves
 // its checkpoint on.
-func fetchFindAOpportunity(
+func fetchFindATender(
 	ctx context.Context,
 	logger *slog.Logger,
-	conf *config.JobSearchConfig,
+	conf *config.JSCSourceFindATender,
 	since time.Time,
 ) error {
 	opportunities, err := util.AwaitTask(
 		ctx,
 		func() ([]*types.Opportunity, error) {
 			findATender := findatender.New(
-				conf, conf.Sources.FindATender.APIRoot, findatender.WithLogger(logger),
+				conf.APIRoot, findatender.WithLogger(logger),
 			)
 			defer findATender.Shutdown()
 			return findATender.With(ctx).FetchAll(since, true)

internal/fetcher/worker_ftsmock.go

@@ -17,17 +17,17 @@ import (
 func runFTSMock(
 	ctx context.Context,
 	logger *slog.Logger,
-	conf *config.JobSearchConfig,
+	conf *config.JSCSourceFTSMock,
 	since time.Time,
 ) error {
-	if conf.Sources.FTSMock.APIRoot == "" {
+	if conf.APIRoot == "" {
 		return errors.New("fetcher: sources.fts_mock.api_root is not set")
 	}
 
 	worker := util.Worker{
 		Logger:   tagged(logger),
 		Name:     "FTSMock",
-		Interval: conf.Sources.FTSMock.Interval,
+		Interval: conf.Interval,
 		Task: func(ctx context.Context, since time.Time) error {
 			return fetchFTSMock(ctx, logger, conf, since)
 		},
@@ -41,14 +41,14 @@ func runFTSMock(
 func fetchFTSMock(
 	ctx context.Context,
 	logger *slog.Logger,
-	conf *config.JobSearchConfig,
+	conf *config.JSCSourceFTSMock,
 	since time.Time,
 ) error {
 	opportunities, err := util.AwaitTask(
 		ctx,
 		func() ([]*types.Opportunity, error) {
 			findATender := findatender.New(
-				conf, conf.Sources.FTSMock.APIRoot, findatender.WithLogger(logger),
+				conf.APIRoot, findatender.WithLogger(logger),
 			)
 			defer findATender.Shutdown()
 			return findATender.With(ctx).FetchAll(since, true)

internal/fetcher/worker_sleeper.go

@@ -17,14 +17,14 @@ const sleepDuration = 60 * time.Second
 func runSleeper(
 	ctx context.Context,
 	logger *slog.Logger,
-	conf *config.JobSearchConfig,
+	conf *config.JSCSourceSleeper,
 	since time.Time,
 ) error {
-	blockShutdown := conf.Sources.Sleeper.BlockShutdown
+	blockShutdown := conf.BlockShutdown
 	worker := util.Worker{
 		Logger:   tagged(logger),
 		Name:     "Sleeper",
-		Interval: conf.Sources.Sleeper.Interval,
+		Interval: conf.Interval,
 		Task: func(taskCtx context.Context, since time.Time) error {
 			if blockShutdown {
 				return sleep(taskCtx, true, sleepDuration)

internal/findatender/api.go

@@ -307,10 +307,10 @@ func closeBody(res *resty.Response) {
 }
 
 // fetchURI performs a single GET of uri, using findATender's context, and
-// traces it at debug level. Unlike the method of the same name it does not
-// check the response status.
+// traces it when debug logging is on (logging.IsDebugEnabled). Unlike the
+// method of the same name it does not check the response status.
 func fetchURI(findATender *FindATender, uri string) (*resty.Response, error) {
-	withTrace := findATender.config.Logging.LogLevel() <= slog.LevelDebug
+	withTrace := logging.IsDebugEnabled()
 	logger := findATender.logger()
 
 	logger.Info("fetching", "uri", uri)

internal/findatender/api_test.go

@@ -17,18 +17,10 @@ import (
 
 	resty "resty.dev/v3"
 
-	"git.avsdev.uk/Go/job-search/internal/config"
 	"git.avsdev.uk/Go/job-search/internal/findatender/ocds"
+	"git.avsdev.uk/Go/job-search/internal/logging"
 )
 
-func testConfig(level string) *config.JobSearchConfig {
-	return &config.JobSearchConfig{
-		Logging: config.JSCLogging{
-			Level: level,
-		},
-	}
-}
-
 // quietLogs discards slog output for the duration of the test, or sends it
 // through h when given.
 func quietLogs(t *testing.T, h slog.Handler) {
@@ -44,16 +36,24 @@ func quietLogs(t *testing.T, h slog.Handler) {
 }
 
 // newTestFT starts h on a test server and returns a FindATender pointed at it.
+// With debug, the logging level is debug for the test, so requests are
+// traced.
 func newTestFT(
-	t *testing.T, level string, h http.HandlerFunc,
+	t *testing.T, debug bool, h http.HandlerFunc,
 ) (*FindATender, *httptest.Server) {
 	t.Helper()
 	quietLogs(t, nil)
+	if debug {
+		logging.SetLevel(slog.LevelDebug)
+		t.Cleanup(func() {
+			logging.SetLevel(slog.LevelInfo)
+		})
+	}
 
 	srv := httptest.NewServer(h)
 	t.Cleanup(srv.Close)
 
-	ft := New(testConfig(level), srv.URL)
+	ft := New(srv.URL)
 	t.Cleanup(ft.Shutdown)
 
 	return ft, srv
@@ -97,7 +97,7 @@ func TestRateSleep(t *testing.T) {
 
 func TestFetchWithOptsBuildsURI(t *testing.T) {
 	var gotPath, gotQuery string
-	ft, _ := newTestFT(t, "warn", func(w http.ResponseWriter, r *http.Request) {
+	ft, _ := newTestFT(t, false, func(w http.ResponseWriter, r *http.Request) {
 		gotPath, gotQuery = r.URL.Path, r.URL.RawQuery
 		io.WriteString(w, packageJSON(""))
 	})
@@ -133,7 +133,7 @@ func TestFetchWithOptsBuildsURI(t *testing.T) {
 // A zero Since defaults to 24 hours ago.
 func TestFetchWithOptsDefaultSince(t *testing.T) {
 	var gotQuery string
-	ft, _ := newTestFT(t, "warn", func(w http.ResponseWriter, r *http.Request) {
+	ft, _ := newTestFT(t, false, func(w http.ResponseWriter, r *http.Request) {
 		gotQuery = r.URL.Query().Get("updatedFrom")
 		io.WriteString(w, packageJSON(""))
 	})
@@ -188,7 +188,7 @@ func TestFetchURIRateLimit(t *testing.T) {
 			var hits atomic.Int32
 			ft, srv := newTestFT(
 				t,
-				"warn",
+				false,
 				func(w http.ResponseWriter, r *http.Request) {
 					if hits.Add(1) == 1 {
 						if tt.retryAfter != "" {
@@ -228,7 +228,7 @@ func TestFetchURIRateLimit(t *testing.T) {
 }
 
 func TestFetchURIRateLimitCancelled(t *testing.T) {
-	ft, srv := newTestFT(t, "warn", func(w http.ResponseWriter, r *http.Request) {
+	ft, srv := newTestFT(t, false, func(w http.ResponseWriter, r *http.Request) {
 		w.Header().Set("Retry-After", "3600")
 		w.WriteHeader(http.StatusTooManyRequests)
 	})
@@ -252,7 +252,7 @@ func TestFetchURIRateLimitCancelled(t *testing.T) {
 func TestFetchURIRateLimitTwice(t *testing.T) {
 	// A second 429 after waiting is reported as ErrRateLimitExceeded.
 	var hits atomic.Int32
-	ft, srv := newTestFT(t, "warn", func(w http.ResponseWriter, r *http.Request) {
+	ft, srv := newTestFT(t, false, func(w http.ResponseWriter, r *http.Request) {
 		hits.Add(1)
 		w.Header().Set("Retry-After", "0")
 		w.WriteHeader(http.StatusTooManyRequests)
@@ -274,7 +274,7 @@ func TestFetchURIUnexpectedStatus(t *testing.T) {
 		t.Run(http.StatusText(status), func(t *testing.T) {
 			ft, srv := newTestFT(
 				t,
-				"warn",
+				false,
 				func(w http.ResponseWriter, r *http.Request) {
 					w.WriteHeader(status)
 					io.WriteString(w, packageJSON("", releaseJSON("ocds-1", "1")))
@@ -294,7 +294,7 @@ func TestFetchURIUnexpectedStatus(t *testing.T) {
 // A non-2xx after waiting out a 429 is reported as ErrUnexpectedStatus.
 func TestFetchURIRateLimitThenError(t *testing.T) {
 	var hits atomic.Int32
-	ft, srv := newTestFT(t, "warn", func(w http.ResponseWriter, r *http.Request) {
+	ft, srv := newTestFT(t, false, func(w http.ResponseWriter, r *http.Request) {
 		if hits.Add(1) == 1 {
 			w.Header().Set("Retry-After", "0")
 			w.WriteHeader(http.StatusTooManyRequests)
@@ -309,7 +309,7 @@ func TestFetchURIRateLimitThenError(t *testing.T) {
 }
 
 func TestFetchURIConnectionError(t *testing.T) {
-	ft, srv := newTestFT(t, "warn", func(w http.ResponseWriter, r *http.Request) {
+	ft, srv := newTestFT(t, false, func(w http.ResponseWriter, r *http.Request) {
 	})
 	srv.Close()
 	ft.httpClient.SetRetryCount(0)
@@ -319,7 +319,7 @@ func TestFetchURIConnectionError(t *testing.T) {
 }
 
 func TestFetchURICancelledContext(t *testing.T) {
-	ft, srv := newTestFT(t, "warn", func(w http.ResponseWriter, r *http.Request) {
+	ft, srv := newTestFT(t, false, func(w http.ResponseWriter, r *http.Request) {
 		io.WriteString(w, packageJSON(""))
 	})
 	ctx, cancel := context.WithCancel(context.Background())
@@ -346,7 +346,7 @@ func TestFetchURIDebugTrace(t *testing.T) {
 		t.Run(name, func(t *testing.T) {
 			ft, _ := newTestFT(
 				t,
-				"debug",
+				true,
 				func(w http.ResponseWriter, r *http.Request) {
 					io.WriteString(w, packageJSON("", releaseJSON("ocds-1", "1")))
 				},
@@ -379,7 +379,7 @@ func TestFetchURIDebugTrace(t *testing.T) {
 func TestFetchURIDebugTraceConnectionError(t *testing.T) {
 	ft, srv := newTestFT(
 		t,
-		"debug",
+		true,
 		func(w http.ResponseWriter, r *http.Request) {
 		},
 	)
@@ -392,7 +392,7 @@ func TestFetchURIDebugTraceConnectionError(t *testing.T) {
 
 func TestFetchNext(t *testing.T) {
 	var gotPath string
-	ft, srv := newTestFT(t, "warn", func(w http.ResponseWriter, r *http.Request) {
+	ft, srv := newTestFT(t, false, func(w http.ResponseWriter, r *http.Request) {
 		gotPath = r.URL.Path
 		io.WriteString(w, packageJSON(""))
 	})
@@ -428,7 +428,7 @@ func TestFetchNext(t *testing.T) {
 // responseFor fetches body from a test server so it can be unpacked.
 func responseFor(t *testing.T, body string) *resty.Response {
 	t.Helper()
-	ft, srv := newTestFT(t, "warn", func(w http.ResponseWriter, r *http.Request) {
+	ft, srv := newTestFT(t, false, func(w http.ResponseWriter, r *http.Request) {
 		io.WriteString(w, body)
 	})
 	res, err := ft.fetchURI(srv.URL, false)
@@ -551,7 +551,7 @@ func pagedServer(
 	t.Helper()
 	var hits atomic.Int32
 	var srvURL string
-	ft, srv := newTestFT(t, "warn", func(w http.ResponseWriter, r *http.Request) {
+	ft, srv := newTestFT(t, false, func(w http.ResponseWriter, r *http.Request) {
 		hits.Add(1)
 
 		i := 0
@@ -598,7 +598,7 @@ func TestFetchOnceErrors(t *testing.T) {
 		t.Errorf("empty page: err = %v, want ErrNoReleases", err)
 	}
 
-	ft, _ = newTestFT(t, "warn", func(w http.ResponseWriter, r *http.Request) {
+	ft, _ = newTestFT(t, false, func(w http.ResponseWriter, r *http.Request) {
 		io.WriteString(w, "not json")
 	})
 	if _, err := ft.fetchOnce(RequestOptions{
@@ -607,7 +607,7 @@ func TestFetchOnceErrors(t *testing.T) {
 		t.Error("bad body: expected an error")
 	}
 
-	ft, _ = newTestFT(t, "warn", func(w http.ResponseWriter, r *http.Request) {
+	ft, _ = newTestFT(t, false, func(w http.ResponseWriter, r *http.Request) {
 		w.WriteHeader(http.StatusTooManyRequests)
 	})
 	if _, err := ft.fetchOnce(
@@ -655,7 +655,7 @@ func TestFetchAllErrors(t *testing.T) {
 	}
 
 	// First page fails.
-	ft, _ = newTestFT(t, "warn", func(w http.ResponseWriter, r *http.Request) {
+	ft, _ = newTestFT(t, false, func(w http.ResponseWriter, r *http.Request) {
 		w.WriteHeader(http.StatusTooManyRequests)
 	})
 	if _, err := ft.fetchAll(
@@ -666,7 +666,7 @@ func TestFetchAllErrors(t *testing.T) {
 		t.Errorf("first page rate limited: err = %v", err)
 	}
 
-	ft, _ = newTestFT(t, "warn", func(w http.ResponseWriter, r *http.Request) {
+	ft, _ = newTestFT(t, false, func(w http.ResponseWriter, r *http.Request) {
 		io.WriteString(w, "not json")
 	})
 	if _, err := ft.fetchAll(RequestOptions{
@@ -688,7 +688,7 @@ func TestFetchAllErrors(t *testing.T) {
 			var srvURL string
 			ft, srv := newTestFT(
 				t,
-				"warn",
+				false,
 				func(w http.ResponseWriter, r *http.Request) {
 					if r.URL.Query().Get("page") == "" {
 						io.WriteString(
@@ -730,7 +730,7 @@ func TestFetchAllRepeatedNextLink(t *testing.T) {
 			var srvURL string
 			ft, srv := newTestFT(
 				t,
-				"error",
+				false,
 				func(w http.ResponseWriter, r *http.Request) {
 					if hits.Add(1) > 10 {
 						t.Error("fetchAll did not stop following next links")

internal/findatender/findatender.go

@@ -7,7 +7,6 @@ import (
 
 	resty "resty.dev/v3"
 
-	"git.avsdev.uk/Go/job-search/internal/config"
 	"git.avsdev.uk/Go/job-search/internal/types"
 )
 
@@ -15,7 +14,6 @@ import (
 // server). Create it with New and call Shutdown when finished with it.
 type FindATender struct {
 	httpClient *resty.Client
-	config     *config.JobSearchConfig
 	apiRoot    string
 	ctx        context.Context
 	log        *slog.Logger
@@ -34,11 +32,8 @@ func WithLogger(logger *slog.Logger) Option {
 // New returns a client for the OCDS API at apiRoot. Requests time out after
 // 60 seconds and are retried once. Call Shutdown when finished with it. It
 // logs to slog.Default() unless given WithLogger.
-func New(
-	conf *config.JobSearchConfig, apiRoot string, opts ...Option,
-) *FindATender {
+func New(apiRoot string, opts ...Option) *FindATender {
 	findATender := &FindATender{
-		config:  conf,
 		apiRoot: apiRoot,
 	}
 	for _, opt := range opts {
@@ -61,12 +56,6 @@ func (ft *FindATender) logger() *slog.Logger {
 	return log.With("component", "findatender")
 }
 
-// ReloadConfig replaces the configuration the client reads, such as the log
-// level. The HTTP client and API root set by New are not changed.
-func (ft *FindATender) ReloadConfig(conf *config.JobSearchConfig) {
-	ft.config = conf
-}
-
 // With returns a copy of the client whose requests use ctx, so they stop
 // when it is cancelled. A nil ctx returns the client unchanged.
 func (ft *FindATender) With(ctx context.Context) *FindATender {

internal/findatender/findatender_test.go

@@ -14,12 +14,11 @@ import (
 )
 
 func TestNew(t *testing.T) {
-	conf := testConfig("warn")
-	ft := New(conf, "https://example/api")
+	ft := New("https://example/api")
 	defer ft.Shutdown()
 
-	if ft.config != conf || ft.apiRoot != "https://example/api" {
-		t.Errorf("New did not keep its arguments: %+v", ft)
+	if ft.apiRoot != "https://example/api" {
+		t.Errorf("New did not keep its API root: %+v", ft)
 	}
 	if ft.httpClient == nil {
 		t.Fatal("no http client")
@@ -37,18 +36,8 @@ func TestNew(t *testing.T) {
 	}
 }
 
-func TestReloadConfig(t *testing.T) {
-	ft := New(testConfig("warn"), "")
-	defer ft.Shutdown()
-	conf := testConfig("debug")
-	ft.ReloadConfig(conf)
-	if ft.config != conf {
-		t.Error("config not replaced")
-	}
-}
-
 func TestWith(t *testing.T) {
-	ft := New(testConfig("warn"), "")
+	ft := New("")
 	defer ft.Shutdown()
 
 	// Passing nil on purpose to test that case.
@@ -69,8 +58,8 @@ func TestWith(t *testing.T) {
 	if ft.ctx != nil {
 		t.Error("With changed the original")
 	}
-	if got.httpClient != ft.httpClient || got.config != ft.config {
-		t.Error("copy should share the client and config")
+	if got.httpClient != ft.httpClient {
+		t.Error("copy should share the client")
 	}
 }
 
@@ -128,7 +117,7 @@ func TestFetchAllPublic(t *testing.T) {
 		}
 	}
 
-	ft, _ = newTestFT(t, "warn", func(w http.ResponseWriter, r *http.Request) {
+	ft, _ = newTestFT(t, false, func(w http.ResponseWriter, r *http.Request) {
 		io.WriteString(w, "not json")
 	})
 	if _, err := ft.FetchAll(time.Now(), false); err == nil {