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

     1  // Copyright (c) 2018 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 uninitialized
    22  
    23  import (
    24  	"github.com/m3db/m3/src/dbnode/storage/bootstrap"
    25  	"github.com/m3db/m3/src/dbnode/storage/bootstrap/bootstrapper"
    26  )
    27  
    28  const (
    29  	// UninitializedTopologyBootstrapperName is the name of the uninitialized bootstrapper.
    30  	UninitializedTopologyBootstrapperName = "uninitialized_topology"
    31  )
    32  
    33  type uninitializedTopologyBootstrapperProvider struct {
    34  	opts Options
    35  	next bootstrap.BootstrapperProvider
    36  }
    37  
    38  // NewUninitializedTopologyBootstrapperProvider creates a new uninitialized bootstrapper
    39  // provider.
    40  func NewUninitializedTopologyBootstrapperProvider(
    41  	opts Options,
    42  	next bootstrap.BootstrapperProvider,
    43  ) bootstrap.BootstrapperProvider {
    44  	return uninitializedTopologyBootstrapperProvider{
    45  		opts: opts,
    46  		next: next,
    47  	}
    48  }
    49  
    50  func (p uninitializedTopologyBootstrapperProvider) Provide() (bootstrap.Bootstrapper, error) {
    51  	var (
    52  		src  = newTopologyUninitializedSource(p.opts)
    53  		b    = &uninitializedTopologyBootstrapper{}
    54  		next bootstrap.Bootstrapper
    55  		err  error
    56  	)
    57  
    58  	if p.next != nil {
    59  		next, err = p.next.Provide()
    60  		if err != nil {
    61  			return nil, err
    62  		}
    63  	}
    64  
    65  	return bootstrapper.NewBaseBootstrapper(
    66  		b.String(), src, p.opts.ResultOptions(), next)
    67  }
    68  
    69  func (p uninitializedTopologyBootstrapperProvider) String() string {
    70  	return UninitializedTopologyBootstrapperName
    71  }
    72  
    73  type uninitializedTopologyBootstrapper struct {
    74  	bootstrap.Bootstrapper
    75  }
    76  
    77  func (*uninitializedTopologyBootstrapper) String() string {
    78  	return UninitializedTopologyBootstrapperName
    79  }