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open_telemetry.go
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open_telemetry.go
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package colibri_otel
import (
"context"
"fmt"
"github.com/colibri-project-io/colibri-sdk-go/pkg/base/config"
"github.com/colibri-project-io/colibri-sdk-go/pkg/base/logging"
"github.com/colibri-project-io/colibri-sdk-go/pkg/base/monitoring/colibri-monitoring-base"
"go.nhat.io/otelsql"
"go.opentelemetry.io/contrib"
"go.opentelemetry.io/otel"
"go.opentelemetry.io/otel/attribute"
"go.opentelemetry.io/otel/codes"
"go.opentelemetry.io/otel/exporters/otlp/otlptrace"
"go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp"
"go.opentelemetry.io/otel/sdk/resource"
sdktrace "go.opentelemetry.io/otel/sdk/trace"
semconv "go.opentelemetry.io/otel/semconv/v1.20.0"
"go.opentelemetry.io/otel/trace"
"net/http"
"os"
)
type MonitoringOpenTelemetry struct {
tracerProvider trace.TracerProvider
tracer trace.Tracer
}
func newResource() *resource.Resource {
return resource.NewWithAttributes(
semconv.SchemaURL,
semconv.ServiceName(config.APP_NAME),
semconv.ServiceVersion(config.APP_VERSION),
)
}
func StartOpenTelemetryMonitoring() colibri_monitoring_base.Monitoring {
client := otlptracehttp.NewClient()
exporter, err := otlptrace.New(context.Background(), client)
if err != nil {
logging.Fatal("Creating OTLP trace exporter: %v", err)
}
tracerProvider := sdktrace.NewTracerProvider(
sdktrace.WithBatcher(exporter),
sdktrace.WithResource(newResource()),
)
otel.SetTracerProvider(tracerProvider)
tracer := tracerProvider.Tracer(
"github.com/colibri-project-io/colibri-sdk-go",
trace.WithInstrumentationVersion(contrib.SemVersion()),
)
return &MonitoringOpenTelemetry{tracer: tracer}
}
func (m *MonitoringOpenTelemetry) StartTransaction(ctx context.Context, name string) (interface{}, context.Context) {
ctx, span := m.tracer.Start(ctx, name)
return span, ctx
}
func (m *MonitoringOpenTelemetry) EndTransaction(span interface{}) {
span.(trace.Span).End()
}
func (m *MonitoringOpenTelemetry) StartWebRequest(ctx context.Context, header http.Header, path string, method string) (interface{}, context.Context) {
attrs := []attribute.KeyValue{
semconv.HTTPMethodKey.String(method),
semconv.HTTPRequestContentLengthKey.String(header.Get("Content-Length")),
semconv.HTTPSchemeKey.String(header.Get("X-Protocol")),
semconv.HTTPTargetKey.String(header.Get("X-Request-URI")),
semconv.HTTPURLKey.String(path),
semconv.UserAgentOriginal(header.Get("User-Agent")),
semconv.NetHostNameKey.String(header.Get("Host")),
semconv.NetTransportTCP,
}
opts := []trace.SpanStartOption{
trace.WithAttributes(attrs...),
trace.WithSpanKind(trace.SpanKindServer),
}
ctx, span := m.tracer.Start(ctx, fmt.Sprintf("%s %s", method, path), opts...)
return span, ctx
}
func (m *MonitoringOpenTelemetry) StartTransactionSegment(ctx context.Context, name string, attributes map[string]string) interface{} {
_, span := m.tracer.Start(ctx, name)
kv := make([]attribute.KeyValue, 0, len(attributes))
for key, value := range attributes {
kv = append(kv, attribute.String(key, value))
}
span.SetAttributes(kv...)
return span
}
func (m *MonitoringOpenTelemetry) EndTransactionSegment(segment interface{}) {
segment.(trace.Span).End()
}
func (m *MonitoringOpenTelemetry) GetTransactionInContext(ctx context.Context) interface{} {
return trace.SpanFromContext(ctx)
}
func (m *MonitoringOpenTelemetry) NoticeError(transaction interface{}, err error) {
transaction.(trace.Span).RecordError(err)
transaction.(trace.Span).SetStatus(codes.Error, err.Error())
}
func (m *MonitoringOpenTelemetry) GetSQLDBDriverName() string {
driverName, err := otelsql.Register("postgres",
otelsql.AllowRoot(),
otelsql.TraceQueryWithoutArgs(),
otelsql.TraceRowsClose(),
otelsql.TraceRowsAffected(),
otelsql.WithDatabaseName(os.Getenv(config.SQL_DB_NAME)),
otelsql.WithSystem(semconv.DBSystemPostgreSQL),
)
if err != nil {
logging.Fatal("could not get sql db driver name: %v", err)
}
return driverName
}