go.temporal.io/server@v1.23.0/common/pprof/fx.go (about)

     1  // The MIT License
     2  //
     3  // Copyright (c) 2020 Temporal Technologies Inc.  All rights reserved.
     4  //
     5  // Copyright (c) 2020 Uber Technologies, Inc.
     6  //
     7  // Permission is hereby granted, free of charge, to any person obtaining a copy
     8  // of this software and associated documentation files (the "Software"), to deal
     9  // in the Software without restriction, including without limitation the rights
    10  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
    11  // copies of the Software, and to permit persons to whom the Software is
    12  // furnished to do so, subject to the following conditions:
    13  //
    14  // The above copyright notice and this permission notice shall be included in
    15  // all copies or substantial portions of the Software.
    16  //
    17  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    18  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    19  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    20  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    21  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    22  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    23  // THE SOFTWARE.
    24  
    25  package pprof
    26  
    27  import (
    28  	"context"
    29  
    30  	"go.uber.org/fx"
    31  )
    32  
    33  // Requires *config.PProf available in container.
    34  var Module = fx.Options(
    35  	fx.Provide(NewInitializer),
    36  	fx.Invoke(LifetimeHooks),
    37  )
    38  
    39  func LifetimeHooks(
    40  	lc fx.Lifecycle,
    41  	pprof *PProfInitializerImpl,
    42  ) {
    43  	lc.Append(
    44  		fx.Hook{
    45  			OnStart: func(context.Context) error {
    46  				return pprof.Start()
    47  			},
    48  			// todo: refactor pprof to gracefully shutdown http server
    49  			// OnStop: func(ctx context.Context) error {
    50  			// 	pprof.Stop()
    51  			// 	return nil
    52  			// },
    53  		},
    54  	)
    55  }