github.com/cloudwego/hertz@v0.9.3/pkg/common/tracer/tracer.go (about)

     1  /*
     2   * Copyright 2022 CloudWeGo Authors
     3   *
     4   * Licensed under the Apache License, Version 2.0 (the "License");
     5   * you may not use this file except in compliance with the License.
     6   * You may obtain a copy of the License at
     7   *
     8   *     http://www.apache.org/licenses/LICENSE-2.0
     9   *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS,
    12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   * See the License for the specific language governing permissions and
    14   * limitations under the License.
    15   */
    16  
    17  package tracer
    18  
    19  import (
    20  	"context"
    21  
    22  	"github.com/cloudwego/hertz/pkg/app"
    23  )
    24  
    25  // Tracer is executed at the start and finish of an HTTP.
    26  type Tracer interface {
    27  	Start(ctx context.Context, c *app.RequestContext) context.Context
    28  	Finish(ctx context.Context, c *app.RequestContext)
    29  }
    30  
    31  type Controller interface {
    32  	Append(col Tracer)
    33  	DoStart(ctx context.Context, c *app.RequestContext) context.Context
    34  	DoFinish(ctx context.Context, c *app.RequestContext, err error)
    35  	HasTracer() bool
    36  }