diff --git a/examples/README.md b/examples/README.md index 3a450de..d085321 100644 --- a/examples/README.md +++ b/examples/README.md @@ -16,6 +16,7 @@ docker run --rm -p 4000-4003:4000-4003 \ - [table](table/README.md) - [object](object/README.md) - [healthcheck](healthcheck/README.md) +- [opentelemetry](opentelemetry/README.md) ## Query diff --git a/examples/healthcheck/main.go b/examples/healthcheck/main.go index d99e3b3..1af3ce9 100644 --- a/examples/healthcheck/main.go +++ b/examples/healthcheck/main.go @@ -39,6 +39,7 @@ func main() { _, err := client.HealthCheck(context.Background()) if err != nil { log.Println("failed to health check:", err) + return } log.Println("the greptimedb is health") } diff --git a/examples/opentelemetry/README.md b/examples/opentelemetry/README.md new file mode 100644 index 0000000..a356de7 --- /dev/null +++ b/examples/opentelemetry/README.md @@ -0,0 +1,73 @@ +# Enable Opentelemetry + +## Install Jaeger +Use [Jaeger](https://github.com/jaegertracing/jaeger) as the backend storage for tracing: +``` +docker run --rm --name jaeger \ + -e COLLECTOR_ZIPKIN_HOST_PORT=:9411 \ + -p 6831:6831/udp \ + -p 6832:6832/udp \ + -p 5778:5778 \ + -p 16686:16686 \ + -p 4317:4317 \ + -p 4318:4318 \ + -p 14250:14250 \ + -p 14268:14268 \ + -p 14269:14269 \ + -p 9411:9411 \ + jaegertracing/all-in-one +``` + +## Install Prometheus +Write the [Prometheus](https://prometheus.io/) configuration file and save it as **prometheus.yml**: +``` +global: + scrape_interval: 10s + +scrape_configs: + - job_name: greptimedb-ingester-go + static_configs: + - targets: ['host.docker.internal:2233'] +``` + +Run prometheus: +``` +docker run \ + -p 9090:9090 \ + -v $(pwd)/prometheus.yml:/etc/prometheus/prometheus.yml \ + prom/prometheus +``` + + +## Example +Enable opentelemetry in the configuration： +```go +cfg := greptime.NewConfig(host).WithDatabase(database). + WithTraceProvider(tracerProvider).WithTracesEnabled(true). + WithMeterProvider(meterProvider).WithMetricsEnabled(true) +``` + +Running the example: +```go +go run main.go +``` + +Output: + +```log +2024/09/19 11:36:29 Waiting for connection... +2024/09/19 11:36:29 serving metrics at localhost:2233/metrics +2024/09/19 11:36:29 affected rows: 1 +2024/09/19 11:36:29 Sleep 30s... +2024/09/19 11:36:39 Done! +``` + +## View metrics +We can use `curl localhost:2233/metrics` to view the metrics data. Also, Open the address http://localhost:9090/ to view metrics data. + +![prometheus.png](../../images/prometheus.png) + +## View tracing +Open the address http://localhost:16686/ to view tracing data. + +![jaeger.png](../../images/jaeger.png) diff --git a/examples/opentelemetry/go.mod b/examples/opentelemetry/go.mod new file mode 100644 index 0000000..745696e --- /dev/null +++ b/examples/opentelemetry/go.mod @@ -0,0 +1,42 @@ +module opentelemetry-example + +go 1.22 + +toolchain go1.22.7 + +require ( + github.com/GreptimeTeam/greptimedb-ingester-go v0.5.3-0.20240918162118-d3f1530a9887 + github.com/prometheus/client_golang v1.20.4 + go.opentelemetry.io/otel v1.30.0 + go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc v1.30.0 + go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.30.0 + go.opentelemetry.io/otel/exporters/prometheus v0.52.0 + go.opentelemetry.io/otel/sdk v1.30.0 + go.opentelemetry.io/otel/sdk/metric v1.30.0 + go.opentelemetry.io/otel/trace v1.30.0 + google.golang.org/grpc v1.66.2 + github.com/GreptimeTeam/greptime-proto v0.7.0 // indirect + github.com/beorn7/perks v1.0.1 // indirect + github.com/cenkalti/backoff/v4 v4.3.0 // indirect + github.com/cespare/xxhash/v2 v2.3.0 // indirect + github.com/go-logr/logr v1.4.2 // indirect + github.com/go-logr/stdr v1.2.2 // indirect + github.com/google/uuid v1.6.0 // indirect + github.com/grpc-ecosystem/grpc-gateway/v2 v2.22.0 // indirect + github.com/klauspost/compress v1.17.9 // indirect + github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect + github.com/prometheus/client_model v0.6.1 // indirect + github.com/prometheus/common v0.59.1 // indirect + github.com/prometheus/procfs v0.15.1 // indirect + github.com/stoewer/go-strcase v1.3.0 // indirect + go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.48.0 // indirect + go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.30.0 // indirect + go.opentelemetry.io/otel/metric v1.30.0 // indirect + go.opentelemetry.io/proto/otlp v1.3.1 // indirect + golang.org/x/net v0.29.0 // indirect + golang.org/x/sys v0.25.0 // indirect + golang.org/x/text v0.18.0 // indirect + google.golang.org/genproto/googleapis/api v0.0.0-20240903143218-8af14fe29dc1 // indirect + google.golang.org/genproto/googleapis/rpc v0.0.0-20240903143218-8af14fe29dc1 // indirect + google.golang.org/protobuf v1.34.2 // indirect +) diff --git a/examples/opentelemetry/go.sum b/examples/opentelemetry/go.sum new file mode 100644 index 0000000..a02c9b5 --- /dev/null +++ b/examples/opentelemetry/go.sum @@ -0,0 +1,163 @@ +cloud.google.com/go/compute v1.23.3 h1:6sVlXXBmbd7jNX0Ipq0trII3e4n1/MsADLK6a+aiVlk= +cloud.google.com/go/compute/metadata v0.3.0 h1:Tz+eQXMEqDIKRsmY3cHTL6FVaynIjX2QxYC4trgAKZc= +cloud.google.com/go/compute/metadata v0.3.0/go.mod h1:zFmK7XCadkQkj6TtorcaGlCW1hT1fIilQDwofLpJ20k= +github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78 h1:w+iIsaOQNcT7OZ575w+acHgRric5iCyQh+xv+KJ4HB8= 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the License for the specific language governing permissions and +// limitations under the License. + +package main + +import ( + "context" + "fmt" + "log" + "net/http" + "os" + "os/signal" + "time" + + "github.com/prometheus/client_golang/prometheus/promhttp" + "go.opentelemetry.io/otel" + "go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc" + "go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc" + otelprom "go.opentelemetry.io/otel/exporters/prometheus" + "go.opentelemetry.io/otel/propagation" + "go.opentelemetry.io/otel/sdk/metric" + sdkmetric "go.opentelemetry.io/otel/sdk/metric" + "go.opentelemetry.io/otel/sdk/resource" + sdktrace "go.opentelemetry.io/otel/sdk/trace" + semconv "go.opentelemetry.io/otel/semconv/v1.26.0" + "go.opentelemetry.io/otel/trace" + "google.golang.org/grpc" + "google.golang.org/grpc/credentials/insecure" + + greptime "github.com/GreptimeTeam/greptimedb-ingester-go" + "github.com/GreptimeTeam/greptimedb-ingester-go/table" + "github.com/GreptimeTeam/greptimedb-ingester-go/table/types" +) + +const ( + metricsBindAddr = ":2233" + + // It connects the OpenTelemetry Collector through local gRPC connection. + // You may replace `localhost:4317` with your endpoint. + tracingEndpoint = "localhost:4317" + + // The GreptimeDB address. + host = "127.0.0.1" + + // The database name. + database = "public" +) + +type client struct { + client *greptime.Client +} + +func newClient(tracerProvider trace.TracerProvider, meterProvider *metric.MeterProvider) (*client, error) { + cfg := greptime.NewConfig(host).WithDatabase(database). + WithTraceProvider(tracerProvider).WithTracesEnabled(true). + WithMeterProvider(meterProvider).WithMetricsEnabled(true) + + gtClient, err := greptime.NewClient(cfg) + if err != nil { + return nil, err + } + + c := &client{ + client: gtClient, + } + + return c, nil +} + +func main() { + log.Printf("Waiting for connection...") + + ctx, cancel := signal.NotifyContext(context.Background(), os.Interrupt) + defer cancel() + + conn, err := initConn() + if err != nil { + log.Fatal(err) + } + + serviceName := semconv.ServiceNameKey.String("test-otel") + res, err := resource.New(ctx, + resource.WithAttributes( + // The service name used to display traces in backends + serviceName, + ), + ) + if err != nil { + log.Fatal(err) + } + + tracerProvider, err := initTracerProvider(ctx, res, conn) + if err != nil { + log.Fatal(err) + } + + exporter, err := otelprom.New(otelprom.WithNamespace("greptime")) + if err != nil { + log.Fatal(err) + } + meterProvider := metric.NewMeterProvider( + metric.WithReader(exporter), + ) + + if err = initMeterProvider(ctx, res, conn); err != nil { + log.Fatal(err) + } + + // Start the prometheus HTTP server and pass the exporter Collector to it + go serveMetrics() + + c, err := newClient(tracerProvider, meterProvider) + if err != nil { + log.Fatalf("failed to new client: %v:", err) + } + + data, err := initData() + if err != nil { + log.Fatalf("failed to init data: %v:", err) + } + if err = c.write(data[1]); err != nil { + log.Fatalf("failed to write data: %v:", err) + } + + log.Printf("Sleep 30s...") + time.Sleep(30 * time.Second) + log.Printf("Done!") +} + +// Initialize a gRPC connection to be used by both the tracer and meter +// providers. +func initConn() (*grpc.ClientConn, error) { + conn, err := grpc.NewClient(tracingEndpoint, + // Note the use of insecure transport here. TLS is recommended in production. + grpc.WithTransportCredentials(insecure.NewCredentials()), + ) + if err != nil { + return nil, fmt.Errorf("failed to create gRPC connection to collector: %w", err) + } + + return conn, err +} + +// Initializes an OTLP exporter, and configures the corresponding trace provider. +func initTracerProvider(ctx context.Context, res *resource.Resource, conn *grpc.ClientConn) (trace.TracerProvider, error) { + // Set up a trace exporter + traceExporter, err := otlptracegrpc.New(ctx, otlptracegrpc.WithGRPCConn(conn)) + if err != nil { + return nil, fmt.Errorf("failed to create trace exporter: %w", err) + } + + // Register the trace exporter with a TracerProvider, using a batch + // span processor to aggregate spans before export. + bsp := sdktrace.NewBatchSpanProcessor(traceExporter) + tracerProvider := sdktrace.NewTracerProvider( + sdktrace.WithSampler(sdktrace.AlwaysSample()), + sdktrace.WithResource(res), + sdktrace.WithSpanProcessor(bsp), + ) + otel.SetTracerProvider(tracerProvider) + + // Set global propagator to tracecontext (the default is no-op). + otel.SetTextMapPropagator(propagation.TraceContext{}) + + // Shutdown will flush any remaining spans and shut down the exporter. + return tracerProvider, nil +} + +// Initializes an OTLP exporter, and configures the corresponding meter provider. +func initMeterProvider(ctx context.Context, res *resource.Resource, conn *grpc.ClientConn) error { + metricExporter, err := otlpmetricgrpc.New(ctx, otlpmetricgrpc.WithGRPCConn(conn)) + if err != nil { + return fmt.Errorf("failed to create metrics exporter: %w", err) + } + + meterProvider := sdkmetric.NewMeterProvider( + sdkmetric.WithReader(sdkmetric.NewPeriodicReader(metricExporter)), + sdkmetric.WithResource(res), + ) + otel.SetMeterProvider(meterProvider) + + return nil +} + +func serveMetrics() { + log.Printf("serving metrics at localhost%s/metrics", metricsBindAddr) + http.Handle("/metrics", promhttp.Handler()) + err := http.ListenAndServe(metricsBindAddr, nil) //nolint:gosec // Ignoring G114: Use of net/http serve function that has no support for setting timeouts. + if err != nil { + log.Fatalf("error serving http: %v", err) + } +} + +func initData() ([]*table.Table, error) { + time1 := time.Now() + time2 := time.Now() + time3 := time.Now() + + itbl, err := table.New("monitors_with_schema") + if err != nil { + return nil, err + } + // add column at first. This is to define the schema of the table. + if err := itbl.AddTagColumn("id", types.INT64); err != nil { + return nil, err + } + if err := itbl.AddFieldColumn("host", types.STRING); err != nil { + return nil, err + } + if err := itbl.AddFieldColumn("temperature", types.FLOAT); err != nil { + return nil, err + } + if err := itbl.AddTimestampColumn("timestamp", types.TIMESTAMP_MICROSECOND); err != nil { + return nil, err + } + + if err := itbl.AddRow(1, "hello", 1.1, time1); err != nil { + return nil, err + } + if err := itbl.AddRow(2, "hello", 2.2, time2); err != nil { + return nil, err + } + if err := itbl.AddRow(3, "hello", 3.3, time3); err != nil { + return nil, err + } + + utbl, err := table.New("monitors_with_schema") + if err != nil { + return nil, err + } + + // add column at first. This is to define the schema of the table. + if err := utbl.AddTagColumn("id", types.INT64); err != nil { + return nil, err + } + if err := utbl.AddFieldColumn("host", types.STRING); err != nil { + return nil, err + } + if err := utbl.AddFieldColumn("temperature", types.FLOAT); err != nil { + return nil, err + } + if err := utbl.AddTimestampColumn("timestamp", types.TIMESTAMP_MICROSECOND); err != nil { + return nil, err + } + + if err := utbl.AddRow(1, "hello", 1.2, time1); err != nil { + return nil, err + } + + dtbl, err := table.New("monitors_with_schema") + if err != nil { + return nil, err + } + + // add column at first. This is to define the schema of the table. + if err := dtbl.AddTagColumn("id", types.INT64); err != nil { + return nil, err + } + if err := dtbl.AddFieldColumn("host", types.STRING); err != nil { + return nil, err + } + if err := dtbl.AddFieldColumn("temperature", types.FLOAT); err != nil { + return nil, err + } + if err := dtbl.AddTimestampColumn("timestamp", types.TIMESTAMP_MICROSECOND); err != nil { + return nil, err + } + + if err := dtbl.AddRow(3, "hello", 3.3, time3); err != nil { + return nil, err + } + + return []*table.Table{itbl, utbl, dtbl}, nil +} + +func (c client) write(data *table.Table) error { + ctx, cancel := context.WithTimeout(context.Background(), time.Second*3) + defer cancel() + resp, err := c.client.Write(ctx, data) + if err != nil { + return err + } + log.Printf("affected rows: %d\n", resp.GetAffectedRows().GetValue()) + return nil +} diff --git a/images/jaeger.png b/images/jaeger.png new file mode 100644 index 0000000..ab7af20 Binary files /dev/null and b/images/jaeger.png differ diff --git a/images/prometheus.png b/images/prometheus.png new file mode 100644 index 0000000..b023cc4 Binary files /dev/null and b/images/prometheus.png differ