milvus/internal/querynodev2/segments/trace.go

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// Licensed to the LF AI & Data foundation under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package segments
/*
#cgo pkg-config: milvus_segcore
#include "segcore/segment_c.h"
*/
import "C"
import (
"context"
"unsafe"
"go.opentelemetry.io/otel/trace"
)
// CTraceContext is the wrapper for `C.CTraceContext`
// it stores the internal C.CTraceContext and
type CTraceContext struct {
traceID trace.TraceID
spanID trace.SpanID
ctx C.CTraceContext
}
// ParseCTraceContext parses tracing span and convert it into `C.CTraceContext`.
func ParseCTraceContext(ctx context.Context) *CTraceContext {
span := trace.SpanFromContext(ctx)
cctx := &CTraceContext{
traceID: span.SpanContext().TraceID(),
spanID: span.SpanContext().SpanID(),
}
cctx.ctx = C.CTraceContext{
traceID: (*C.uint8_t)(unsafe.Pointer(&cctx.traceID[0])),
spanID: (*C.uint8_t)(unsafe.Pointer(&cctx.spanID[0])),
traceFlags: (C.uint8_t)(span.SpanContext().TraceFlags()),
}
return cctx
}