diff --git a/otel-app/README.md b/otel-app/README.md index a9a8dfb5..62edbe6b 100644 --- a/otel-app/README.md +++ b/otel-app/README.md @@ -119,3 +119,27 @@ cumulative export; `raw-buffer` keeps every event as its own data point | `config-countsketch.yaml` | CountSketch | | `config-countminsketch.yaml` | CountMinSketch | | `config-baseline.yaml` | none (raw Sum/LastValue) | + +## Fake backend sink (`sink/`) + +`sink` stands in for the backend while it cannot ingest the Collector's +output. It only receives: it counts what arrives, discards it, and prints +totals on SIGINT/SIGTERM (and every `-stats-every` if set). + +```bash +go run ./sink -grpc :4317 -http :10908 [-dump-dir /path] [-stats-every 30s] +``` + +- **OTLP/gRPC** (`-grpc`): point an OTLP exporter (the edge Collector or + otel-app `-target`) here. Sketch metrics are counted per sketch kind and + data-point encoding (`*Delta` encodings are deltas, the rest full state): + `SINK_SKETCH kind= encoding= mode= msgs= bytes=`. Plain points keep the + `SINK_STATS reqs= datapoints= bytes=` line. +- **HTTP `POST /ingest/gorilla`** (`-http`): point `cold.ship_endpoint` here. + The gzipped ASAPFRG1 fragment frame is decoded to count + `SINK_RAW reqs= gzip_bytes= bytes= fragments= series= samples=`. +- `-dump-dir`: write each request body to + `--.bin` for offline comparison of + sketch answers with exact answers from the raw samples. Gorilla bodies are + stored as received (gzipped); OTLP bodies are the + `ExportMetricsServiceRequest` protobuf. diff --git a/otel-app/go.mod b/otel-app/go.mod index 707dbb6e..972648d2 100644 --- a/otel-app/go.mod +++ b/otel-app/go.mod @@ -3,43 +3,112 @@ module github.com/approx-telemetry/otel-app go 1.25.0 require ( + github.com/ProjectASAP/asap-gorilla-go v0.0.0-00010101000000-000000000000 github.com/ProjectASAP/asap-precompute-go v0.0.0-00010101000000-000000000000 github.com/ProjectASAP/asap-precompute-go/monitor/grpcclient v0.0.0-00010101000000-000000000000 + github.com/ProjectASAP/sketchlib-go v0.0.0-20260903015955-4b0919d3d653 + go.opentelemetry.io/collector/pdata v1.42.0 go.opentelemetry.io/otel v1.43.0 go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc v1.41.0 go.opentelemetry.io/otel/metric v1.43.0 go.opentelemetry.io/otel/sdk v1.41.0 go.opentelemetry.io/otel/sdk/metric v1.41.0 - go.opentelemetry.io/proto/otlp v1.9.0 go.yaml.in/yaml/v2 v2.4.3 google.golang.org/grpc v1.79.1 - google.golang.org/protobuf v1.36.11 ) replace ( + github.com/ProjectASAP/asap-gorilla-go => ../asap-gorilla-go github.com/ProjectASAP/asap-precompute-go => ../asap-precompute-go github.com/ProjectASAP/asap-precompute-go/monitor/grpcclient => ../asap-precompute-go/monitor/grpcclient ) require ( - github.com/ProjectASAP/sketchlib-go v0.0.0-20260903015955-4b0919d3d653 // indirect + cloud.google.com/go/auth v0.16.5 // indirect + cloud.google.com/go/auth/oauth2adapt v0.2.8 // indirect + cloud.google.com/go/compute/metadata v0.9.0 // indirect + github.com/Azure/azure-sdk-for-go/sdk/azcore v1.19.1 // indirect + github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.12.0 // indirect + github.com/Azure/azure-sdk-for-go/sdk/internal v1.11.2 // indirect + github.com/AzureAD/microsoft-authentication-library-for-go v1.5.0 // indirect + github.com/alecthomas/units v0.0.0-20240927000941-0f3dac36c52b // indirect + github.com/aws/aws-sdk-go-v2 v1.41.7 // indirect + github.com/aws/aws-sdk-go-v2/config v1.31.12 // indirect + github.com/aws/aws-sdk-go-v2/credentials v1.18.16 // indirect + github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.18.9 // indirect + github.com/aws/aws-sdk-go-v2/internal/configsources v1.4.23 // indirect + github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.7.23 // indirect + github.com/aws/aws-sdk-go-v2/internal/ini v1.8.3 // indirect + github.com/aws/aws-sdk-go-v2/service/internal/accept-encoding v1.13.9 // indirect + github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.13.23 // indirect + github.com/aws/aws-sdk-go-v2/service/sso v1.29.6 // indirect + github.com/aws/aws-sdk-go-v2/service/ssooidc v1.35.1 // indirect + github.com/aws/aws-sdk-go-v2/service/sts v1.38.6 // indirect + github.com/aws/smithy-go v1.25.1 // indirect + github.com/bboreham/go-loser v0.0.0-20230920113527-fcc2c21820a3 // indirect + github.com/beorn7/perks v1.0.1 // indirect github.com/cenkalti/backoff/v5 v5.0.3 // indirect github.com/cespare/xxhash/v2 v2.3.0 // indirect + github.com/colega/zeropool v0.0.0-20230505084239-6fb4a4f75381 // indirect + github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect + github.com/dennwc/varint v1.0.0 // indirect + github.com/felixge/httpsnoop v1.0.4 // indirect github.com/go-logr/logr v1.4.3 // indirect github.com/go-logr/stdr v1.2.2 // indirect + github.com/golang-jwt/jwt/v5 v5.3.0 // indirect + github.com/golang/snappy v1.0.0 // indirect + github.com/google/go-cmp v0.7.0 // indirect + github.com/google/s2a-go v0.1.9 // indirect github.com/google/uuid v1.6.0 // indirect + github.com/googleapis/enterprise-certificate-proxy v0.3.6 // indirect + github.com/googleapis/gax-go/v2 v2.15.0 // indirect github.com/grafana/regexp v0.0.0-20250905093917-f7b3be9d1853 // indirect + github.com/hashicorp/go-version v1.7.0 // indirect + github.com/jpillora/backoff v1.0.0 // indirect + github.com/json-iterator/go v1.1.12 // indirect + github.com/klauspost/compress v1.18.0 // indirect github.com/klauspost/cpuid/v2 v2.2.10 // indirect + github.com/kylelemons/godebug v1.1.0 // indirect + github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect + github.com/modern-go/reflect2 v1.0.3-0.20250322232337-35a7c28c31ee // indirect + github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect + github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f // indirect + github.com/oklog/ulid/v2 v2.1.1 // indirect + github.com/pkg/browser v0.0.0-20240102092130-5ac0b6a4141c // indirect + github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect + github.com/prometheus/client_golang v1.23.2 // indirect github.com/prometheus/client_model v0.6.2 // indirect - github.com/prometheus/common v0.66.1 // indirect - github.com/prometheus/prometheus v0.307.1 // indirect + github.com/prometheus/common v0.67.1 // indirect + github.com/prometheus/otlptranslator v1.0.0 // indirect + github.com/prometheus/procfs v0.16.1 // indirect + github.com/prometheus/prometheus v0.307.3 // indirect + github.com/prometheus/sigv4 v0.2.1 // indirect + github.com/stretchr/testify v1.11.1 // indirect github.com/zeebo/xxh3 v1.1.0 // indirect go.opentelemetry.io/auto/sdk v1.2.1 // indirect + go.opentelemetry.io/collector/featuregate v1.47.0 // indirect + go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.63.0 // indirect go.opentelemetry.io/otel/trace v1.43.0 // indirect + go.opentelemetry.io/proto/otlp v1.9.0 // indirect + go.uber.org/atomic v1.11.0 // indirect + go.uber.org/goleak v1.3.0 // indirect + go.uber.org/multierr v1.11.0 // indirect + golang.org/x/crypto v0.48.0 // indirect + golang.org/x/exp v0.0.0-20250808145144-a408d31f581a // indirect golang.org/x/net v0.50.0 // indirect + golang.org/x/oauth2 v0.34.0 // indirect + golang.org/x/sync v0.19.0 // indirect golang.org/x/sys v0.41.0 // indirect golang.org/x/text v0.34.0 // indirect + golang.org/x/time v0.13.0 // indirect + google.golang.org/api v0.250.0 // indirect google.golang.org/genproto/googleapis/rpc v0.0.0-20260209200024-4cfbd4190f57 // indirect + google.golang.org/protobuf v1.36.11 // indirect + gopkg.in/yaml.v3 v3.0.1 // indirect + k8s.io/apimachinery v0.34.1 // indirect + k8s.io/client-go v0.34.1 // indirect + k8s.io/klog/v2 v2.130.1 // indirect + k8s.io/utils v0.0.0-20250604170112-4c0f3b243397 // indirect ) // The `opentelemetry-go` submodule is kept in the repo with @@ -55,6 +124,10 @@ require ( // is `../../sketchlib-go` — matching the path opentelemetry-app used. replace ( github.com/ProjectASAP/sketchlib-go => ../../sketchlib-go + // The sink decodes OTLP with the patched pdata (the same module the + // asapedgeprocessor encodes with), which carries the SumAgg variant + // the patched proto bindings above do not. + go.opentelemetry.io/collector/pdata => ../opentelemetry-collector/pdata go.opentelemetry.io/otel => ../opentelemetry-go go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc => ../opentelemetry-go/exporters/otlp/otlpmetric/otlpmetricgrpc go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp => ../opentelemetry-go/exporters/otlp/otlpmetric/otlpmetrichttp diff --git a/otel-app/go.sum b/otel-app/go.sum index bb233c2b..7f9bec75 100644 --- a/otel-app/go.sum +++ b/otel-app/go.sum @@ -1,58 +1,392 @@ +cloud.google.com/go/auth v0.16.5 h1:mFWNQ2FEVWAliEQWpAdH80omXFokmrnbDhUS9cBywsI= +cloud.google.com/go/auth v0.16.5/go.mod h1:utzRfHMP+Vv0mpOkTRQoWD2q3BatTOoWbA7gCc2dUhQ= +cloud.google.com/go/auth/oauth2adapt v0.2.8 h1:keo8NaayQZ6wimpNSmW5OPc283g65QNIiLpZnkHRbnc= +cloud.google.com/go/auth/oauth2adapt v0.2.8/go.mod h1:XQ9y31RkqZCcwJWNSx2Xvric3RrU88hAYYbjDWYDL+c= +cloud.google.com/go/compute/metadata v0.9.0 h1:pDUj4QMoPejqq20dK0Pg2N4yG9zIkYGdBtwLoEkH9Zs= +cloud.google.com/go/compute/metadata v0.9.0/go.mod h1:E0bWwX5wTnLPedCKqk3pJmVgCBSM6qQI1yTBdEb3C10= +github.com/Azure/azure-sdk-for-go/sdk/azcore v1.19.1 h1:5YTBM8QDVIBN3sxBil89WfdAAqDZbyJTgh688DSxX5w= +github.com/Azure/azure-sdk-for-go/sdk/azcore v1.19.1/go.mod h1:YD5h/ldMsG0XiIw7PdyNhLxaM317eFh5yNLccNfGdyw= +github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.12.0 h1:wL5IEG5zb7BVv1Kv0Xm92orq+5hB5Nipn3B5tn4Rqfk= +github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.12.0/go.mod h1:J7MUC/wtRpfGVbQ5sIItY5/FuVWmvzlY21WAOfQnq/I= +github.com/Azure/azure-sdk-for-go/sdk/azidentity/cache v0.3.2 h1:yz1bePFlP5Vws5+8ez6T3HWXPmwOK7Yvq8QxDBD3SKY= +github.com/Azure/azure-sdk-for-go/sdk/azidentity/cache v0.3.2/go.mod h1:Pa9ZNPuoNu/GztvBSKk9J1cDJW6vk/n0zLtV4mgd8N8= +github.com/Azure/azure-sdk-for-go/sdk/internal v1.11.2 h1:9iefClla7iYpfYWdzPCRDozdmndjTm8DXdpCzPajMgA= +github.com/Azure/azure-sdk-for-go/sdk/internal v1.11.2/go.mod h1:XtLgD3ZD34DAaVIIAyG3objl5DynM3CQ/vMcbBNJZGI= +github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/compute/armcompute/v5 v5.7.0 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h1:jC+153630BMdlFukegoEL8E/yT7aLyQkIVuwhmwDgJM= +k8s.io/api v0.34.1/go.mod h1:SB80FxFtXn5/gwzCoN6QCtPD7Vbu5w2n1S0J5gFfTYk= +k8s.io/apimachinery v0.34.1 h1:dTlxFls/eikpJxmAC7MVE8oOeP1zryV7iRyIjB0gky4= +k8s.io/apimachinery v0.34.1/go.mod h1:/GwIlEcWuTX9zKIg2mbw0LRFIsXwrfoVxn+ef0X13lw= +k8s.io/client-go v0.34.1 h1:ZUPJKgXsnKwVwmKKdPfw4tB58+7/Ik3CrjOEhsiZ7mY= +k8s.io/client-go v0.34.1/go.mod h1:kA8v0FP+tk6sZA0yKLRG67LWjqufAoSHA2xVGKw9Of8= +k8s.io/klog/v2 v2.130.1 h1:n9Xl7H1Xvksem4KFG4PYbdQCQxqc/tTUyrgXaOhHSzk= +k8s.io/klog/v2 v2.130.1/go.mod h1:3Jpz1GvMt720eyJH1ckRHK1EDfpxISzJ7I9OYgaDtPE= +k8s.io/kube-openapi v0.0.0-20250710124328-f3f2b991d03b h1:MloQ9/bdJyIu9lb1PzujOPolHyvO06MXG5TUIj2mNAA= +k8s.io/kube-openapi v0.0.0-20250710124328-f3f2b991d03b/go.mod h1:UZ2yyWbFTpuhSbFhv24aGNOdoRdJZgsIObGBUaYVsts= +k8s.io/utils v0.0.0-20250604170112-4c0f3b243397 h1:hwvWFiBzdWw1FhfY1FooPn3kzWuJ8tmbZBHi4zVsl1Y= +k8s.io/utils v0.0.0-20250604170112-4c0f3b243397/go.mod h1:OLgZIPagt7ERELqWJFomSt595RzquPNLL48iOWgYOg0= +sigs.k8s.io/json v0.0.0-20241014173422-cfa47c3a1cc8 h1:gBQPwqORJ8d8/YNZWEjoZs7npUVDpVXUUOFfW6CgAqE= +sigs.k8s.io/json v0.0.0-20241014173422-cfa47c3a1cc8/go.mod h1:mdzfpAEoE6DHQEN0uh9ZbOCuHbLK5wOm7dK4ctXE9Tg= +sigs.k8s.io/randfill v1.0.0 h1:JfjMILfT8A6RbawdsK2JXGBR5AQVfd+9TbzrlneTyrU= +sigs.k8s.io/randfill v1.0.0/go.mod h1:XeLlZ/jmk4i1HRopwe7/aU3H5n1zNUcX6TM94b3QxOY= +sigs.k8s.io/structured-merge-diff/v6 v6.3.0 h1:jTijUJbW353oVOd9oTlifJqOGEkUw2jB/fXCbTiQEco= +sigs.k8s.io/structured-merge-diff/v6 v6.3.0/go.mod h1:M3W8sfWvn2HhQDIbGWj3S099YozAsymCo/wrT5ohRUE= +sigs.k8s.io/yaml v1.6.0 h1:G8fkbMSAFqgEFgh4b1wmtzDnioxFCUgTZhlbj5P9QYs= +sigs.k8s.io/yaml v1.6.0/go.mod h1:796bPqUfzR/0jLAl6XjHl3Ck7MiyVv8dbTdyT3/pMf4= diff --git a/otel-app/sink/main.go b/otel-app/sink/main.go index c399dbfc..ced855f9 100644 --- a/otel-app/sink/main.go +++ b/otel-app/sink/main.go @@ -1,88 +1,312 @@ -// sink — a minimal OTLP/gRPC metrics receiver that counts and discards. +// sink — a fake backend that receives the Collector's outputs, counts them +// and discards them. It does NO sketch merging, querying or aggregation. // -// Used only to give otel-app a real export endpoint so the producer's -// marshal+gzip export path is exercised. It does NO sketching or -// aggregation, so any producer-side CPU difference between -agg modes is -// attributable to the producer, not the sink. It prints received -// request/datapoint/byte totals on shutdown (SIGINT/SIGTERM). +// Two inputs: +// - OTLP/gRPC metrics Export (-grpc, default :4317). Sketch metrics (the +// modified-OTLP DDSketch / KLLSketch / CountSketch / CountMinSketch / +// HLLSketch / SumAgg variants written by asap-precompute-go/otel.Encode) +// are counted per sketch kind and per data-point encoding; the encoding +// enum is what marks a payload full or delta (*Delta = delta). Plain +// gauge/sum/histogram/summary points are counted as datapoints. +// - HTTP POST /ingest/gorilla (-http, default :10908, the gorilla-merger +// port): the asapedgeprocessor cold shipper's gzipped ASAPFRG1 frame of +// Prometheus XOR chunk fragments. Fragments are decoded with +// asap-gorilla-go to count series and samples. +// +// It also gives otel-app a real export endpoint, so the producer's +// marshal+gzip export path is exercised without sink-side CPU noise. +// +// With -dump-dir, every received request body is written to its own file +// --.bin so an offline script can compare +// sketch answers against exact answers computed from the raw samples. The +// gorilla body is written as received (gzipped); the OTLP body is the +// ExportMetricsServiceRequest protobuf re-marshalled from the decoded request, +// because gRPC decodes the message before the handler sees it. +// +// Totals are printed on shutdown (SIGINT/SIGTERM) and, with -stats-every, +// periodically. package main import ( + "bytes" + "compress/gzip" "context" + "flag" + "fmt" + "io" "log" "net" + "net/http" "os" "os/signal" + "path/filepath" + "sort" + "strings" + "sync" "sync/atomic" "syscall" + "time" - cmetrics "go.opentelemetry.io/proto/otlp/collector/metrics/v1" + gorilla "github.com/ProjectASAP/asap-gorilla-go" + "go.opentelemetry.io/collector/pdata/pmetric" + "go.opentelemetry.io/collector/pdata/pmetric/pmetricotlp" "google.golang.org/grpc" - "google.golang.org/protobuf/proto" + _ "google.golang.org/grpc/encoding/gzip" // accept gzip-compressed OTLP exports ) +// sketchKey is one summary row: sketch kind (pdata metric type) and the +// data-point encoding, e.g. {DDSketch, ProtoDelta}. +type sketchKey struct { + kind string + encoding string +} + +type sketchCount struct { + msgs int64 // sketch data points (one SketchEnvelope each) + bytes int64 // sketch payload bytes +} + type server struct { - cmetrics.UnimplementedMetricsServiceServer - reqs atomic.Int64 - dataPoints atomic.Int64 - bytes atomic.Int64 + pmetricotlp.UnimplementedGRPCServer + dumpDir string + seq atomic.Int64 + + mu sync.Mutex + // OTLP requests (sketch and plain alike) and their protobuf size. + otlpReqs, otlpBytes int64 + // Plain (non-sketch) OTLP datapoints. + dataPoints int64 + sketches map[sketchKey]sketchCount + // Gorilla cold-ship requests. + rawReqs, rawGzipBytes, rawBytes, fragments, samples int64 + series map[string]struct{} } -func (s *server) Export(ctx context.Context, req *cmetrics.ExportMetricsServiceRequest) (*cmetrics.ExportMetricsServiceResponse, error) { - s.reqs.Add(1) - s.bytes.Add(int64(proto.Size(req))) - var dp int64 - for _, rm := range req.GetResourceMetrics() { - for _, sm := range rm.GetScopeMetrics() { - for _, m := range sm.GetMetrics() { - // Count datapoints across the common metric shapes. - if g := m.GetGauge(); g != nil { - dp += int64(len(g.GetDataPoints())) - } - if sum := m.GetSum(); sum != nil { - dp += int64(len(sum.GetDataPoints())) - } - if h := m.GetHistogram(); h != nil { - dp += int64(len(h.GetDataPoints())) - } - if eh := m.GetExponentialHistogram(); eh != nil { - dp += int64(len(eh.GetDataPoints())) - } - if su := m.GetSummary(); su != nil { - dp += int64(len(su.GetDataPoints())) - } +func newServer(dumpDir string) *server { + return &server{ + dumpDir: dumpDir, + sketches: make(map[sketchKey]sketchCount), + series: make(map[string]struct{}), + } +} + +// dump writes one request body verbatim when -dump-dir is set. +func (s *server) dump(input string, body []byte) error { + if s.dumpDir == "" { + return nil + } + name := fmt.Sprintf("%d-%s-%d.bin", time.Now().UnixNano(), input, s.seq.Add(1)) + return os.WriteFile(filepath.Join(s.dumpDir, name), body, 0o644) +} + +func (s *server) Export(_ context.Context, req pmetricotlp.ExportRequest) (pmetricotlp.ExportResponse, error) { + md := req.Metrics() + if s.dumpDir != "" { + body, err := req.MarshalProto() + if err != nil { + return pmetricotlp.NewExportResponse(), err + } + if err := s.dump("otlp", body); err != nil { + return pmetricotlp.NewExportResponse(), err + } + } + size := int64((&pmetric.ProtoMarshaler{}).MetricsSize(md)) + + s.mu.Lock() + defer s.mu.Unlock() + s.otlpReqs++ + s.otlpBytes += size + rms := md.ResourceMetrics() + for i := 0; i < rms.Len(); i++ { + sms := rms.At(i).ScopeMetrics() + for j := 0; j < sms.Len(); j++ { + ms := sms.At(j).Metrics() + for k := 0; k < ms.Len(); k++ { + s.countMetric(ms.At(k)) } } } - s.dataPoints.Add(dp) - return &cmetrics.ExportMetricsServiceResponse{}, nil + return pmetricotlp.NewExportResponse(), nil +} + +// countMetric adds one metric's points to the counters. Caller holds s.mu. +func (s *server) countMetric(m pmetric.Metric) { + kind := m.Type().String() + switch m.Type() { + case pmetric.MetricTypeGauge: + s.dataPoints += int64(m.Gauge().DataPoints().Len()) + case pmetric.MetricTypeSum: + s.dataPoints += int64(m.Sum().DataPoints().Len()) + case pmetric.MetricTypeHistogram: + s.dataPoints += int64(m.Histogram().DataPoints().Len()) + case pmetric.MetricTypeExponentialHistogram: + s.dataPoints += int64(m.ExponentialHistogram().DataPoints().Len()) + case pmetric.MetricTypeSummary: + s.dataPoints += int64(m.Summary().DataPoints().Len()) + case pmetric.MetricTypeDDSketch: + dps := m.DDSketch().DataPoints() + for i := 0; i < dps.Len(); i++ { + s.addSketch(kind, dps.At(i).Encoding(), len(dps.At(i).Sketch())) + } + case pmetric.MetricTypeKLLSketch: + dps := m.KLLSketch().DataPoints() + for i := 0; i < dps.Len(); i++ { + s.addSketch(kind, dps.At(i).Encoding(), len(dps.At(i).Sketch())) + } + case pmetric.MetricTypeCountSketch: + dps := m.CountSketch().DataPoints() + for i := 0; i < dps.Len(); i++ { + s.addSketch(kind, dps.At(i).Encoding(), len(dps.At(i).Sketch())) + } + case pmetric.MetricTypeCountMinSketch: + dps := m.CountMinSketch().DataPoints() + for i := 0; i < dps.Len(); i++ { + s.addSketch(kind, dps.At(i).Encoding(), len(dps.At(i).Sketch())) + } + case pmetric.MetricTypeHLLSketch: + dps := m.HLLSketch().DataPoints() + for i := 0; i < dps.Len(); i++ { + s.addSketch(kind, dps.At(i).Encoding(), len(dps.At(i).Sketch())) + } + case pmetric.MetricTypeSumAgg: + dps := m.SumAgg().DataPoints() + for i := 0; i < dps.Len(); i++ { + s.addSketch(kind, dps.At(i).Encoding(), len(dps.At(i).Sketch())) + } + } +} + +func (s *server) addSketch(kind string, encoding fmt.Stringer, payloadBytes int) { + k := sketchKey{kind: kind, encoding: encoding.String()} + c := s.sketches[k] + c.msgs++ + c.bytes += int64(payloadBytes) + s.sketches[k] = c +} + +// ingestGorilla handles the cold shipper's POST: Content-Encoding gzip, +// body = gzip(gorilla.EncodeFragmentBatch(frags)). +func (s *server) ingestGorilla(w http.ResponseWriter, r *http.Request) { + body, err := io.ReadAll(r.Body) + if err != nil { + http.Error(w, err.Error(), http.StatusBadRequest) + return + } + if err := s.dump("gorilla", body); err != nil { + http.Error(w, err.Error(), http.StatusInternalServerError) + return + } + frame := body + if r.Header.Get("Content-Encoding") == "gzip" { + zr, err := gzip.NewReader(bytes.NewReader(body)) + if err == nil { + frame, err = io.ReadAll(zr) + } + if err != nil { + http.Error(w, "gunzip: "+err.Error(), http.StatusBadRequest) + return + } + } + frags, err := gorilla.DecodeFragmentBatch(frame) + if err != nil { + http.Error(w, err.Error(), http.StatusBadRequest) + return + } + var samples int64 + for _, f := range frags { + ss, err := gorilla.DecodeFragmentSamples(f) + if err != nil { + http.Error(w, err.Error(), http.StatusBadRequest) + return + } + samples += int64(len(ss)) + } + + s.mu.Lock() + defer s.mu.Unlock() + s.rawReqs++ + s.rawGzipBytes += int64(len(body)) + s.rawBytes += int64(len(frame)) + s.fragments += int64(len(frags)) + s.samples += samples + for _, f := range frags { + s.series[gorilla.FragmentLabels(f.MetricName, f.Attributes, nil).String()] = struct{}{} + } +} + +func (s *server) logStats() { + s.mu.Lock() + defer s.mu.Unlock() + log.Printf("SINK_STATS reqs=%d datapoints=%d bytes=%d", s.otlpReqs, s.dataPoints, s.otlpBytes) + keys := make([]sketchKey, 0, len(s.sketches)) + for k := range s.sketches { + keys = append(keys, k) + } + sort.Slice(keys, func(i, j int) bool { + return keys[i].kind < keys[j].kind || keys[i].kind == keys[j].kind && keys[i].encoding < keys[j].encoding + }) + for _, k := range keys { + mode := "full" + if strings.HasSuffix(k.encoding, "Delta") { + mode = "delta" + } + c := s.sketches[k] + log.Printf("SINK_SKETCH kind=%s encoding=%s mode=%s msgs=%d bytes=%d", k.kind, k.encoding, mode, c.msgs, c.bytes) + } + log.Printf("SINK_RAW reqs=%d gzip_bytes=%d bytes=%d fragments=%d series=%d samples=%d", + s.rawReqs, s.rawGzipBytes, s.rawBytes, s.fragments, len(s.series), s.samples) } func main() { - addr := ":4317" - if len(os.Args) > 1 { - addr = os.Args[1] + grpcAddr := flag.String("grpc", ":4317", "OTLP/gRPC listen address") + httpAddr := flag.String("http", ":10908", "HTTP listen address for POST /ingest/gorilla") + dumpDir := flag.String("dump-dir", "", "if set, write every received request body to its own file here") + statsEvery := flag.Duration("stats-every", 0, "if > 0, also print totals at this interval") + flag.Parse() + + if *dumpDir != "" { + if err := os.MkdirAll(*dumpDir, 0o755); err != nil { + log.Fatalf("dump dir: %v", err) + } } - lis, err := net.Listen("tcp", addr) + srv := newServer(*dumpDir) + + lis, err := net.Listen("tcp", *grpcAddr) if err != nil { - log.Fatalf("listen %s: %v", addr, err) + log.Fatalf("listen %s: %v", *grpcAddr, err) } // Generous limits so large raw-buffer payloads are accepted, not rejected. gs := grpc.NewServer(grpc.MaxRecvMsgSize(1 << 30)) - srv := &server{} - cmetrics.RegisterMetricsServiceServer(gs, srv) - log.Printf("sink listening on %s", addr) + pmetricotlp.RegisterGRPCServer(gs, srv) + + mux := http.NewServeMux() + mux.HandleFunc("POST /ingest/gorilla", srv.ingestGorilla) + hs := &http.Server{Addr: *httpAddr, Handler: mux} + go func() { + if err := hs.ListenAndServe(); err != http.ErrServerClosed { + log.Fatalf("http serve: %v", err) + } + }() + log.Printf("sink listening on grpc %s, http %s", *grpcAddr, *httpAddr) + + if *statsEvery > 0 { + go func() { + for range time.Tick(*statsEvery) { + srv.logStats() + } + }() + } go func() { sig := make(chan os.Signal, 1) signal.Notify(sig, syscall.SIGINT, syscall.SIGTERM) <-sig - log.Printf("SINK_STATS reqs=%d datapoints=%d bytes=%d", - srv.reqs.Load(), srv.dataPoints.Load(), srv.bytes.Load()) + _ = hs.Shutdown(context.Background()) gs.GracefulStop() }() if err := gs.Serve(lis); err != nil { log.Fatalf("serve: %v", err) } + srv.logStats() } diff --git a/otel-app/sink/main_test.go b/otel-app/sink/main_test.go new file mode 100644 index 00000000..2106a4a5 --- /dev/null +++ b/otel-app/sink/main_test.go @@ -0,0 +1,146 @@ +package main + +import ( + "bytes" + "compress/gzip" + "context" + "net" + "net/http" + "net/http/httptest" + "os" + "path/filepath" + "strings" + "testing" + "time" + + gorilla "github.com/ProjectASAP/asap-gorilla-go" + precompute "github.com/ProjectASAP/asap-precompute-go" + asapotel "github.com/ProjectASAP/asap-precompute-go/otel" + "go.opentelemetry.io/collector/pdata/pmetric/pmetricotlp" + "google.golang.org/grpc" + "google.golang.org/grpc/credentials/insecure" + grpcgzip "google.golang.org/grpc/encoding/gzip" +) + +// TestSinkCountsAndDumps sends one sketch metric over OTLP/gRPC and one +// gzipped ASAPFRG1 frame over HTTP, both built by the producers' encoders, and +// checks the counters and the dumped bodies. +func TestSinkCountsAndDumps(t *testing.T) { + dir := t.TempDir() + srv := newServer(dir) + + // (a) OTLP: one DDSketch delta envelope, encoded as the edge processor does. + md, err := asapotel.Encode([]*precompute.SketchEnvelope{{ + SketchType: precompute.SketchTypeDDSketch, + Encoding: precompute.EncodingProtoDelta, + Payload: []byte{1, 2, 3, 4, 5}, + MetricName: "latency", + Labels: []precompute.KeyValue{{Key: "host", Value: "a"}}, + WindowStartMs: 1000, + WindowEndMs: 2000, + }}, &asapotel.AdapterConfig{}) + if err != nil { + t.Fatal(err) + } + req := pmetricotlp.NewExportRequestFromMetrics(md) + + lis, err := net.Listen("tcp", "127.0.0.1:0") + if err != nil { + t.Fatal(err) + } + gs := grpc.NewServer() + pmetricotlp.RegisterGRPCServer(gs, srv) + go func() { _ = gs.Serve(lis) }() + defer gs.Stop() + cc, err := grpc.NewClient(lis.Addr().String(), grpc.WithTransportCredentials(insecure.NewCredentials())) + if err != nil { + t.Fatal(err) + } + defer cc.Close() + ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second) + defer cancel() + if _, err := pmetricotlp.NewGRPCClient(cc).Export(ctx, req, grpc.UseCompressor(grpcgzip.Name)); err != nil { + t.Fatalf("export: %v", err) + } + + // (b) Gorilla: two series, 3 + 2 samples, drained into fragments and + // framed + gzipped as the cold fragment shipper does. + enc := gorilla.NewStreamingFragmentEncoder(gorilla.StreamingFragmentOptions{}) + base := time.UnixMilli(1_700_000_000_000) + for i, host := range []string{"a", "a", "a", "b", "b"} { + if err := enc.AddSample(gorilla.TSDBSample{ + MetricName: "cpu", + Attributes: map[string]string{"host": host}, + Timestamp: base.Add(time.Duration(i) * time.Second), + Value: float64(i), + }); err != nil { + t.Fatal(err) + } + } + frags, err := enc.Drain(true) + if err != nil { + t.Fatal(err) + } + frame := gorilla.EncodeFragmentBatch(frags) + var gz bytes.Buffer + zw := gzip.NewWriter(&gz) + _, _ = zw.Write(frame) + _ = zw.Close() + body := gz.Bytes() + + hs := httptest.NewServer(http.HandlerFunc(srv.ingestGorilla)) + defer hs.Close() + hreq, _ := http.NewRequest(http.MethodPost, hs.URL+"/ingest/gorilla", bytes.NewReader(body)) + hreq.Header.Set("Content-Type", "application/octet-stream") + hreq.Header.Set("Content-Encoding", "gzip") + resp, err := http.DefaultClient.Do(hreq) + if err != nil { + t.Fatal(err) + } + _ = resp.Body.Close() + if resp.StatusCode != http.StatusOK { + t.Fatalf("ingest status %d", resp.StatusCode) + } + + srv.mu.Lock() + if srv.otlpReqs != 1 || srv.dataPoints != 0 { + t.Errorf("otlp reqs=%d datapoints=%d, want 1, 0", srv.otlpReqs, srv.dataPoints) + } + if got := srv.sketches[sketchKey{"DDSketch", "ProtoDelta"}]; got != (sketchCount{msgs: 1, bytes: 5}) || len(srv.sketches) != 1 { + t.Errorf("sketches = %v, want {DDSketch ProtoDelta}: 1 msg, 5 bytes", srv.sketches) + } + if srv.rawReqs != 1 || srv.rawGzipBytes != int64(len(body)) || srv.rawBytes != int64(len(frame)) || + srv.fragments != int64(len(frags)) || len(srv.series) != 2 || srv.samples != 5 { + t.Errorf("raw reqs=%d gzip=%d bytes=%d fragments=%d series=%d samples=%d, want 1, %d, %d, %d, 2, 5", + srv.rawReqs, srv.rawGzipBytes, srv.rawBytes, srv.fragments, len(srv.series), srv.samples, + len(body), len(frame), len(frags)) + } + srv.mu.Unlock() + + otlpBody, err := req.MarshalProto() + if err != nil { + t.Fatal(err) + } + want := map[string][]byte{"otlp": otlpBody, "gorilla": body} + entries, err := os.ReadDir(dir) + if err != nil { + t.Fatal(err) + } + if len(entries) != 2 { + t.Fatalf("dump dir has %d files, want 2", len(entries)) + } + for _, e := range entries { + input := strings.Split(e.Name(), "-")[1] + got, err := os.ReadFile(filepath.Join(dir, e.Name())) + if err != nil { + t.Fatal(err) + } + if !bytes.Equal(got, want[input]) { + t.Errorf("%s: dumped body differs from the sent %s body", e.Name(), input) + } + delete(want, input) + } + if len(want) != 0 { + t.Errorf("no dump for %v", want) + } +}