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exporter.go
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package main
import (
"context"
"github.com/sirupsen/logrus"
"go.opentelemetry.io/otel/exporters/otlp/otlptrace"
"go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc"
"go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp"
"google.golang.org/grpc"
"google.golang.org/grpc/credentials/insecure"
)
// NewGrpcExporter 定义一个exporter, 他使用grpc与宿主机上的collector进行通信
// Note: 注意此函数所依赖的grpc版本很高,与mongo客户端版本有可能有冲突
// endpoint: 值类似(otlp-agent.default:4317)
func NewGrpcExporter(ctx context.Context, endpoint string) *otlptrace.Exporter {
conn, err := grpc.DialContext(ctx, endpoint,
// 使用不加密的通信,可选择TLS
grpc.WithTransportCredentials(insecure.NewCredentials()),
grpc.WithBlock(),
)
if err != nil {
logrus.Fatalf("无法建立与grpc collector的链接: %v", err)
}
exporter, err := otlptracegrpc.New(ctx, otlptracegrpc.WithGRPCConn(conn))
if err != nil {
logrus.Fatalf("New grpc collector failure: %v", err)
}
return exporter
}
// NewHttpExporter 定义一个exporter, 他使用http与宿主机上的collector进行通信
// endpoint:取值类似(otlp-agent.default:4318)
func NewHttpExporter(ctx context.Context, endpoint string) *otlptrace.Exporter {
client := otlptracehttp.NewClient(
otlptracehttp.WithEndpoint(endpoint),
otlptracehttp.WithInsecure(),
)
exporter, err := otlptrace.New(ctx, client)
if err != nil {
logrus.Fatalf("New http collector failure: %v", err)
}
return exporter
}