open-telemetry · djaglowski · Jan 9, 2025 · Jan 8, 2025
@@ -0,0 +1,29 @@
+# Use this changelog template to create an entry for release notes.
+
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: breaking
+
+# The name of the component, or a single word describing the area of concern, (e.g. filelogreceiver)
+component: routingconnector
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Change `match_once` parameter from `bool` to `*bool`.
+
+# Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists.
+issues: [29882]
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext: |
+  Boolean values should still unmarshal successfully, but direct instantiation in code will fail.
+  The change allows us to check for usage and warn of the upcoming removal in v0.120.0.
+
+# If your change doesn't affect end users or the exported elements of any package,
+# you should instead start your pull request title with [chore] or use the "Skip Changelog" label.
+# Optional: The change log or logs in which this entry should be included.
+# e.g. '[user]' or '[user, api]'
+# Include 'user' if the change is relevant to end users.
+# Include 'api' if there is a change to a library API.
+# Default: '[user]'
+change_logs: [api]
@@ -0,0 +1,28 @@
+# Use this changelog template to create an entry for release notes.
+
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: breaking
+
+# The name of the component, or a single word describing the area of concern, (e.g. filelogreceiver)
+component: routingconnector
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Disconnect `match_once` parameter from functionality.
+
+# Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists.
+issues: [29882]
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext: |
+  The parameter will be ignored, except to trigger a warning log about its upcoming removal in v0.120.0.
+
+# If your change doesn't affect end users or the exported elements of any package,
+# you should instead start your pull request title with [chore] or use the "Skip Changelog" label.
+# Optional: The change log or logs in which this entry should be included.
+# e.g. '[user]' or '[user, api]'
+# Include 'user' if the change is relevant to end users.
+# Include 'api' if there is a change to a library API.
+# Default: '[user]'
+change_logs: []
@@ -43,8 +43,8 @@ type Config struct {
 	Table []RoutingTableItem `mapstructure:"table"`
 
 	// MatchOnce determines whether the connector matches multiple statements.
-	// Optional.
-	MatchOnce bool `mapstructure:"match_once"`
+	// Unused. Deprecated in v0.116.0. Will be removed in v0.120.0.
+	MatchOnce *bool `mapstructure:"match_once"`
 }
 
 // Validate checks if the processor configuration is valid.
@@ -77,10 +77,6 @@ func (c *Config) Validate() error {
 				return err
 			}
 			fallthrough
-		case "span", "metric", "datapoint", "log": // ok
-			if !c.MatchOnce {
-				return fmt.Errorf(`%q context is not supported with "match_once: false"`, item.Context)
-			}
 		default:
 			return errors.New("invalid context: " + item.Context)
 		}

@@ -27,7 +27,6 @@ func TestLoadConfig(t *testing.T) {
 			configPath: filepath.Join("testdata", "config", "traces.yaml"),
 			id:         component.NewIDWithName(metadata.Type, ""),
 			expected: &Config{
-				MatchOnce: true,
 				DefaultPipelines: []pipeline.ID{
 					pipeline.NewIDWithName(pipeline.SignalTraces, "otlp-all"),
 				},
@@ -53,7 +52,6 @@ func TestLoadConfig(t *testing.T) {
 			configPath: filepath.Join("testdata", "config", "metrics.yaml"),
 			id:         component.NewIDWithName(metadata.Type, ""),
 			expected: &Config{
-				MatchOnce: true,
 				DefaultPipelines: []pipeline.ID{
 					pipeline.NewIDWithName(pipeline.SignalMetrics, "otlp-all"),
 				},
@@ -79,7 +77,6 @@ func TestLoadConfig(t *testing.T) {
 			configPath: filepath.Join("testdata", "config", "logs.yaml"),
 			id:         component.NewIDWithName(metadata.Type, ""),
 			expected: &Config{
-				MatchOnce: true,
 				DefaultPipelines: []pipeline.ID{
 					pipeline.NewIDWithName(pipeline.SignalLogs, "otlp-all"),
 				},
@@ -221,70 +218,6 @@ func TestValidateConfig(t *testing.T) {
 			},
 			error: "invalid context: invalid",
 		},
-		{
-			name: "span context with match_once false",
-			config: &Config{
-				MatchOnce: false,
-				Table: []RoutingTableItem{
-					{
-						Context:   "span",
-						Statement: `route() where attributes["attr"] == "acme"`,
-						Pipelines: []pipeline.ID{
-							pipeline.NewIDWithName(pipeline.SignalTraces, "otlp"),
-						},
-					},
-				},
-			},
-			error: `"span" context is not supported with "match_once: false"`,
-		},
-		{
-			name: "metric context with match_once false",
-			config: &Config{
-				MatchOnce: false,
-				Table: []RoutingTableItem{
-					{
-						Context:   "metric",
-						Statement: `route() where attributes["attr"] == "acme"`,
-						Pipelines: []pipeline.ID{
-							pipeline.NewIDWithName(pipeline.SignalTraces, "otlp"),
-						},
-					},
-				},
-			},
-			error: `"metric" context is not supported with "match_once: false"`,
-		},
-		{
-			name: "datapoint context with match_once false",
-			config: &Config{
-				MatchOnce: false,
-				Table: []RoutingTableItem{
-					{
-						Context:   "datapoint",
-						Statement: `route() where attributes["attr"] == "acme"`,
-						Pipelines: []pipeline.ID{
-							pipeline.NewIDWithName(pipeline.SignalTraces, "otlp"),
-						},
-					},
-				},
-			},
-			error: `"datapoint" context is not supported with "match_once: false"`,
-		},
-		{
-			name: "log context with match_once false",
-			config: &Config{
-				MatchOnce: false,
-				Table: []RoutingTableItem{
-					{
-						Context:   "log",
-						Statement: `route() where attributes["attr"] == "acme"`,
-						Pipelines: []pipeline.ID{
-							pipeline.NewIDWithName(pipeline.SignalTraces, "otlp"),
-						},
-					},
-				},
-			},
-			error: `"log" context is not supported with "match_once: false"`,
-		},
 		{
 			name: "request context with statement",
 			config: &Config{
@@ -349,7 +282,6 @@ func withDefault(pipelines ...pipeline.ID) testConfigOption {
 
 func testConfig(opts ...testConfigOption) *Config {
 	cfg := createDefaultConfig().(*Config)
-	cfg.MatchOnce = true
 	for _, opt := range opts {
 		opt(cfg)
 	}

@@ -31,7 +31,6 @@ func NewFactory() connector.Factory {
 func createDefaultConfig() component.Config {
 	return &Config{
 		ErrorMode: ottl.PropagateError,
-		MatchOnce: true,
 	}
 }
 

@@ -35,8 +35,8 @@ func newLogsConnector(
 ) (*logsConnector, error) {
 	cfg := config.(*Config)
 
-	if !cfg.MatchOnce {
-		set.Logger.Error("The 'match_once' field has been deprecated and will be removed in v0.120.0. Remove usage of the parameter to suppress this warning.")
+	if cfg.MatchOnce != nil {
+		set.Logger.Error("The 'match_once' field has been deprecated and no longer has any effect. It will be removed in v0.120.0.")
 	}
 
 	lr, ok := logs.(connector.LogsRouterAndConsumer)
@@ -65,15 +65,6 @@ func (c *logsConnector) Capabilities() consumer.Capabilities {
 }
 
 func (c *logsConnector) ConsumeLogs(ctx context.Context, ld plog.Logs) error {
-	if c.config.MatchOnce {
-		return c.switchLogs(ctx, ld)
-	}
-	return c.matchAllLogs(ctx, ld)
-}
-
-// switchLogs removes items from the original plog.Logs as they are matched,
-// and sends them to the appropriate consumer.
-func (c *logsConnector) switchLogs(ctx context.Context, ld plog.Logs) error {
 	groups := make(map[consumer.Logs]plog.Logs)
 	var errs error
 	for i := 0; i < len(c.router.routeSlice) && ld.ResourceLogs().Len() > 0; i++ {
@@ -120,42 +111,6 @@ func (c *logsConnector) switchLogs(ctx context.Context, ld plog.Logs) error {
 	return errs
 }
 
-func (c *logsConnector) matchAllLogs(ctx context.Context, ld plog.Logs) error {
-	// routingEntry is used to group plog.ResourceLogs that are routed to
-	// the same set of exporters.
-	// This way we're not ending up with all the logs split up which would cause
-	// higher CPU usage.
-	groups := make(map[consumer.Logs]plog.Logs)
-	var errs error
-	for i := 0; i < ld.ResourceLogs().Len(); i++ {
-		rlogs := ld.ResourceLogs().At(i)
-		rtx := ottlresource.NewTransformContext(rlogs.Resource(), rlogs)
-		noRoutesMatch := true
-		for _, route := range c.router.routeSlice {
-			_, isMatch, err := route.resourceStatement.Execute(ctx, rtx)
-			if err != nil {
-				if c.config.ErrorMode == ottl.PropagateError {
-					return err
-				}
-				groupLogs(groups, c.router.defaultConsumer, rlogs)
-				continue
-			}
-			if isMatch {
-				noRoutesMatch = false
-				groupLogs(groups, route.consumer, rlogs)
-			}
-		}
-		if noRoutesMatch {
-			// no route conditions are matched, add resource logs to default exporters group
-			groupLogs(groups, c.router.defaultConsumer, rlogs)
-		}
-	}
-	for consumer, group := range groups {
-		errs = errors.Join(errs, consumer.ConsumeLogs(ctx, group))
-	}
-	return errs
-}
-
 func groupAllLogs(
 	groups map[consumer.Logs]plog.Logs,
 	cons consumer.Logs,

@@ -160,57 +160,6 @@ func TestLogsAreCorrectlySplitPerResourceAttributeWithOTTL(t *testing.T) {
 		assert.Empty(t, sink1.AllLogs())
 	})
 
-	t.Run("logs matched by two expressions", func(t *testing.T) {
-		resetSinks()
-
-		l := plog.NewLogs()
-
-		rl := l.ResourceLogs().AppendEmpty()
-		rl.Resource().Attributes().PutStr("X-Tenant", "x_acme")
-		rl.ScopeLogs().AppendEmpty().LogRecords().AppendEmpty()
-
-		rl = l.ResourceLogs().AppendEmpty()
-		rl.Resource().Attributes().PutStr("X-Tenant", "_acme")
-		rl.ScopeLogs().AppendEmpty().LogRecords().AppendEmpty()
-
-		require.NoError(t, conn.ConsumeLogs(context.Background(), l))
-
-		assert.Empty(t, defaultSink.AllLogs())
-		assert.Len(t, sink0.AllLogs(), 1)
-		assert.Len(t, sink1.AllLogs(), 1)
-
-		assert.Equal(t, 2, sink0.AllLogs()[0].LogRecordCount())
-		assert.Equal(t, 2, sink1.AllLogs()[0].LogRecordCount())
-		assert.Equal(t, sink0.AllLogs(), sink1.AllLogs())
-	})
-
-	t.Run("one log matched by multiple expressions, other matched none", func(t *testing.T) {
-		resetSinks()
-
-		l := plog.NewLogs()
-
-		rl := l.ResourceLogs().AppendEmpty()
-		rl.Resource().Attributes().PutStr("X-Tenant", "_acme")
-		rl.ScopeLogs().AppendEmpty().LogRecords().AppendEmpty()
-
-		rl = l.ResourceLogs().AppendEmpty()
-		rl.Resource().Attributes().PutStr("X-Tenant", "something-else")
-		rl.ScopeLogs().AppendEmpty().LogRecords().AppendEmpty()
-
-		require.NoError(t, conn.ConsumeLogs(context.Background(), l))
-
-		assert.Len(t, defaultSink.AllLogs(), 1)
-		assert.Len(t, sink0.AllLogs(), 1)
-		assert.Len(t, sink1.AllLogs(), 1)
-
-		assert.Equal(t, sink0.AllLogs(), sink1.AllLogs())
-
-		rlog := defaultSink.AllLogs()[0].ResourceLogs().At(0)
-		attr, ok := rlog.Resource().Attributes().Get("X-Tenant")
-		assert.True(t, ok, "routing attribute must exists")
-		assert.Equal(t, "something-else", attr.AsString())
-	})
-
 	t.Run("logs matched by one expression, multiple pipelines", func(t *testing.T) {
 		resetSinks()
 
@@ -253,7 +202,6 @@ func TestLogsAreCorrectlyMatchOnceWithOTTL(t *testing.T) {
 				Pipelines: []pipeline.ID{logsDefault, logs0},
 			},
 		},
-		MatchOnce: true,
 	}
 
 	var defaultSink, sink0, sink1 consumertest.LogsSink

@@ -36,8 +36,8 @@ func newMetricsConnector(
 ) (*metricsConnector, error) {
 	cfg := config.(*Config)
 
-	if !cfg.MatchOnce {
-		set.Logger.Error("The 'match_once' field has been deprecated and will be removed in v0.120.0. Remove usage of the parameter to suppress this warning.")
+	if cfg.MatchOnce != nil {
+		set.Logger.Error("The 'match_once' field has been deprecated and no longer has any effect. It will be removed in v0.120.0.")
 	}
 
 	mr, ok := metrics.(connector.MetricsRouterAndConsumer)
@@ -66,13 +66,6 @@ func (c *metricsConnector) Capabilities() consumer.Capabilities {
 }
 
 func (c *metricsConnector) ConsumeMetrics(ctx context.Context, md pmetric.Metrics) error {
-	if c.config.MatchOnce {
-		return c.switchMetrics(ctx, md)
-	}
-	return c.matchAllMetrics(ctx, md)
-}
-
-func (c *metricsConnector) switchMetrics(ctx context.Context, md pmetric.Metrics) error {
 	groups := make(map[consumer.Metrics]pmetric.Metrics)
 	var errs error
 	for i := 0; i < len(c.router.routeSlice) && md.ResourceMetrics().Len() > 0; i++ {
@@ -128,43 +121,6 @@ func (c *metricsConnector) switchMetrics(ctx context.Context, md pmetric.Metrics
 	return errs
 }
 
-func (c *metricsConnector) matchAllMetrics(ctx context.Context, md pmetric.Metrics) error {
-	// groups is used to group pmetric.ResourceMetrics that are routed to
-	// the same set of exporters. This way we're not ending up with all the
-	// metrics split up which would cause higher CPU usage.
-	groups := make(map[consumer.Metrics]pmetric.Metrics)
-
-	var errs error
-	for i := 0; i < md.ResourceMetrics().Len(); i++ {
-		rmetrics := md.ResourceMetrics().At(i)
-		rtx := ottlresource.NewTransformContext(rmetrics.Resource(), rmetrics)
-
-		noRoutesMatch := true
-		for _, route := range c.router.routeSlice {
-			_, isMatch, err := route.resourceStatement.Execute(ctx, rtx)
-			if err != nil {
-				if c.config.ErrorMode == ottl.PropagateError {
-					return err
-				}
-				groupMetrics(groups, c.router.defaultConsumer, rmetrics)
-				continue
-			}
-			if isMatch {
-				noRoutesMatch = false
-				groupMetrics(groups, route.consumer, rmetrics)
-			}
-		}
-		if noRoutesMatch {
-			// no route conditions are matched, add resource metrics to default exporters group
-			groupMetrics(groups, c.router.defaultConsumer, rmetrics)
-		}
-	}
-	for consumer, group := range groups {
-		errs = errors.Join(errs, consumer.ConsumeMetrics(ctx, group))
-	}
-	return errs
-}
-
 func groupAllMetrics(
 	groups map[consumer.Metrics]pmetric.Metrics,
 	cons consumer.Metrics,