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draft up a way to translate otel loki receiver to flow
Signed-off-by: erikbaranowski <[email protected]>
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143 changes: 143 additions & 0 deletions
143
internal/converter/internal/otelcolconvert/converter_lokireceiver.go
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,143 @@ | ||
| package otelcolconvert | ||
|
|
||
| import ( | ||
| "fmt" | ||
|
|
||
| "github.com/grafana/agent/internal/component/common/loki" | ||
| "github.com/grafana/agent/internal/component/loki/source/api" | ||
| "github.com/grafana/agent/internal/component/otelcol" | ||
| otel_loki "github.com/grafana/agent/internal/component/otelcol/receiver/loki" | ||
| "github.com/grafana/agent/internal/converter/diag" | ||
| "github.com/grafana/agent/internal/converter/internal/common" | ||
| "github.com/grafana/agent/internal/converter/internal/promtailconvert/build" | ||
| "github.com/grafana/dskit/server" | ||
| "github.com/grafana/loki/clients/pkg/promtail/scrapeconfig" | ||
| "github.com/open-telemetry/opentelemetry-collector-contrib/receiver/lokireceiver" | ||
| "go.opentelemetry.io/collector/component" | ||
| ) | ||
|
|
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| func init() { | ||
| converters = append(converters, lokiReceiverConverter{}) | ||
| } | ||
|
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| type lokiReceiverConverter struct{} | ||
|
|
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| func (lokiReceiverConverter) Factory() component.Factory { return lokireceiver.NewFactory() } | ||
|
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| func (lokiReceiverConverter) InputComponentName() string { return "" } | ||
|
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| func (lokiReceiverConverter) ConvertAndAppend(state *State, id component.InstanceID, cfg component.Config) diag.Diagnostics { | ||
| var diags diag.Diagnostics | ||
|
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| label := state.FlowComponentLabel() | ||
|
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| otelArgs := toOtelcolReceiverLoki(state, id) | ||
| otelBlock := common.NewBlockWithOverride([]string{"otelcol", "receiver", "loki"}, label, otelArgs) | ||
|
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| logsReceivers := []loki.LogsReceiver{common.ConvertLogsReceiver{ | ||
| Expr: StringifyBlock(otelBlock) + ".receiver", | ||
| }} | ||
| apiArgs := toLokiSourceApi(logsReceivers, cfg.(*lokireceiver.Config)) | ||
| apiBlock := common.NewBlockWithOverride([]string{"loki", "source", "api"}, label, apiArgs) | ||
|
|
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| diags.Add( | ||
| diag.SeverityLevelInfo, | ||
| fmt.Sprintf("Converted %s into %s", StringifyInstanceID(id), StringifyBlock(otelBlock)), | ||
| ) | ||
|
|
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| diags.Add( | ||
| diag.SeverityLevelInfo, | ||
| fmt.Sprintf("Converted %s into %s", StringifyInstanceID(id), StringifyBlock(apiBlock)), | ||
| ) | ||
|
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| // Do this at the end in reverse order so the pipeline looks a little better | ||
| state.Body().AppendBlock(apiBlock) | ||
| state.Body().AppendBlock(otelBlock) | ||
| return diags | ||
| } | ||
|
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||
| func toOtelcolReceiverLoki(state *State, id component.InstanceID) *otel_loki.Arguments { | ||
| var ( | ||
| nextLogs = state.Next(id, component.DataTypeLogs) | ||
| ) | ||
|
|
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| return &otel_loki.Arguments{ | ||
| Output: &otelcol.ConsumerArguments{ | ||
| Logs: ToTokenizedConsumers(nextLogs), | ||
| }, | ||
| } | ||
| } | ||
|
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| func toLokiSourceApi(logsReceivers []loki.LogsReceiver, cfg *lokireceiver.Config) *api.Arguments { | ||
| ptc := &scrapeconfig.PushTargetConfig{ | ||
| Server: toServer(&cfg.Protocols), | ||
| Labels: nil, | ||
| KeepTimestamp: cfg.KeepTimestamp, | ||
| } | ||
|
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| args := build.ToLokiApiArguments(ptc, logsReceivers) | ||
| return &args | ||
| } | ||
|
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| func toServer(cfg *lokireceiver.Protocols) server.Config { | ||
| return server.Config{ | ||
| HTTPListenAddress: "", | ||
| HTTPListenPort: 0, | ||
| HTTPConnLimit: 0, | ||
| HTTPServerReadTimeout: 0, | ||
| HTTPServerWriteTimeout: 0, | ||
| HTTPServerIdleTimeout: 0, | ||
| GRPCListenAddress: "", | ||
| GRPCListenPort: 0, | ||
| GRPCConnLimit: 0, | ||
| GRPCServerMaxConnectionAge: 0, | ||
| GRPCServerMaxConnectionAgeGrace: 0, | ||
| GRPCServerMaxRecvMsgSize: 0, | ||
| GRPCServerMaxSendMsgSize: 0, | ||
| GRPCServerMaxConcurrentStreams: uint(cfg.GRPC.MaxConcurrentStreams), | ||
| GRPCServerMaxConnectionIdle: 0, | ||
| ServerGracefulShutdownTimeout: cfg.GRPC.NetAddr.DialerConfig.Timeout, | ||
|
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| // PROMTAIL CONVERTER IGNORES ALL OF THESE | ||
| // | ||
| // HTTPListenNetwork: "", | ||
| // HTTPServerReadHeaderTimeout: 0, | ||
| // GRPCListenNetwork: "", | ||
| // CipherSuites: "", | ||
| // MinVersion: "", | ||
| // HTTPTLSConfig: server.TLSConfig{}, | ||
| // GRPCTLSConfig: server.TLSConfig{}, | ||
| // RegisterInstrumentation: false, | ||
| // ReportGRPCCodesInInstrumentationLabel: false, | ||
| // ReportHTTP4XXCodesInInstrumentationLabel: false, | ||
| // ExcludeRequestInLog: false, | ||
| // DisableRequestSuccessLog: false, | ||
| // HTTPLogClosedConnectionsWithoutResponse: false, | ||
| // GRPCOptions: []grpc.ServerOption{}, | ||
| // GRPCMiddleware: []grpc.UnaryServerInterceptor{}, | ||
| // GRPCStreamMiddleware: []grpc.StreamServerInterceptor{}, | ||
| // HTTPMiddleware: []middleware.Interface{}, | ||
| // Router: &mux.Router{}, | ||
| // DoNotAddDefaultHTTPMiddleware: false, | ||
| // RouteHTTPToGRPC: false, | ||
| // GRPCServerTime: 0, | ||
| // GRPCServerTimeout: cfg.GRPC.NetAddr.DialerConfig.Timeout, | ||
| // GRPCServerMinTimeBetweenPings: 0, | ||
| // GRPCServerPingWithoutStreamAllowed: false, | ||
| // GRPCServerNumWorkers: 0, | ||
| // LogFormat: "", | ||
| // LogLevel: log.Level{}, | ||
| // Log: nil, | ||
| // LogSourceIPs: false, | ||
| // LogSourceIPsHeader: "", | ||
| // LogSourceIPsRegex: "", | ||
| // LogRequestHeaders: false, | ||
| // LogRequestAtInfoLevel: false, | ||
| // LogRequestExcludeHeadersList: "", | ||
| // SignalHandler: nil, | ||
| // Registerer: nil, | ||
| // Gatherer: nil, | ||
| // PathPrefix: "", | ||
| // GrpcMethodLimiter: nil, | ||
| } | ||
| } |
22 changes: 22 additions & 0 deletions
22
internal/converter/internal/otelcolconvert/testdata/lokireceiver.river
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,22 @@ | ||
| loki.source.api "default" { | ||
| http { } | ||
|
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| grpc { } | ||
| graceful_shutdown_timeout = "10s" | ||
| forward_to = [otelcol.receiver.loki.default.receiver] | ||
| labels = {} | ||
| relabel_rules = null | ||
| use_incoming_timestamp = true | ||
| } | ||
|
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| otelcol.receiver.loki "default" { | ||
| output { | ||
| logs = [otelcol.exporter.otlp.default.input] | ||
| } | ||
| } | ||
|
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| otelcol.exporter.otlp "default" { | ||
| client { | ||
| endpoint = "database:4317" | ||
| } | ||
| } |
21 changes: 21 additions & 0 deletions
21
internal/converter/internal/otelcolconvert/testdata/lokireceiver.yaml
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,21 @@ | ||
| receivers: | ||
| loki: | ||
| protocols: | ||
| http: | ||
| endpoint: 0.0.0.0:3500 | ||
| grpc: | ||
| endpoint: 0.0.0.0:3600 | ||
| dialer: | ||
| timeout: 10s | ||
| use_incoming_timestamp: true | ||
|
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| exporters: | ||
| otlp: | ||
| endpoint: database:4317 | ||
|
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| service: | ||
| pipelines: | ||
| logs: | ||
| receivers: [loki] | ||
| processors: [] | ||
| exporters: [otlp] |
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