github.com/m3db/m3@v1.5.0/src/dbnode/storage/bootstrap/noop.go (about)

     1  // Copyright (c) 2016 Uber Technologies, Inc.
     2  //
     3  // Permission is hereby granted, free of charge, to any person obtaining a copy
     4  // of this software and associated documentation files (the "Software"), to deal
     5  // in the Software without restriction, including without limitation the rights
     6  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     7  // copies of the Software, and to permit persons to whom the Software is
     8  // furnished to do so, subject to the following conditions:
     9  //
    10  // The above copyright notice and this permission notice shall be included in
    11  // all copies or substantial portions of the Software.
    12  //
    13  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    14  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    15  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    16  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    17  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    18  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    19  // THE SOFTWARE.
    20  
    21  package bootstrap
    22  
    23  import (
    24  	"github.com/m3db/m3/src/x/context"
    25  	xtime "github.com/m3db/m3/src/x/time"
    26  )
    27  
    28  type noOpBootstrapProcessProvider struct{}
    29  
    30  // NewNoOpProcessProvider creates a no-op bootstrap process proivder.
    31  func NewNoOpProcessProvider() ProcessProvider {
    32  	return noOpBootstrapProcessProvider{}
    33  }
    34  
    35  func (b noOpBootstrapProcessProvider) SetBootstrapperProvider(provider BootstrapperProvider) {
    36  }
    37  
    38  func (b noOpBootstrapProcessProvider) BootstrapperProvider() BootstrapperProvider {
    39  	return nil
    40  }
    41  
    42  func (b noOpBootstrapProcessProvider) Provide() (Process, error) {
    43  	return noOpBootstrapProcess{}, nil
    44  }
    45  
    46  type noOpBootstrapProcess struct{}
    47  
    48  func (b noOpBootstrapProcess) Run(
    49  	_ context.Context,
    50  	_ xtime.UnixNano,
    51  	namespaces []ProcessNamespace,
    52  ) (NamespaceResults, error) {
    53  	// Run hooks if any for testing purposes.
    54  	for _, ns := range namespaces {
    55  		if err := ns.Hooks.BootstrapSourceBegin(); err != nil {
    56  			return NamespaceResults{}, err
    57  		}
    58  		if err := ns.Hooks.BootstrapSourceEnd(); err != nil {
    59  			return NamespaceResults{}, err
    60  		}
    61  	}
    62  	return NewNamespaceResults(NewNamespaces(namespaces)), nil
    63  }