go.chromium.org/luci@v0.0.0-20240309015107-7cdc2e660f33/gae/impl/memory/module.go (about)

     1  // Copyright 2016 The LUCI Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package memory
    16  
    17  import (
    18  	"context"
    19  
    20  	"go.chromium.org/luci/gae/service/module"
    21  )
    22  
    23  type moduleVersion struct {
    24  	module, version string
    25  }
    26  
    27  type modImpl struct {
    28  	numInstances map[moduleVersion]int
    29  }
    30  
    31  // useMod adds a Module interface to the context
    32  func useMod(c context.Context) context.Context {
    33  	modMap := map[moduleVersion]int{}
    34  	return module.SetFactory(c, func(ic context.Context) module.RawInterface {
    35  		return &modImpl{modMap}
    36  	})
    37  }
    38  
    39  var _ = module.RawInterface((*modImpl)(nil))
    40  
    41  func (mod *modImpl) List() ([]string, error) {
    42  	return []string{"testModule1", "testModule2"}, nil
    43  }
    44  
    45  func (mod *modImpl) NumInstances(module, version string) (int, error) {
    46  	if ret, ok := mod.numInstances[moduleVersion{module, version}]; ok {
    47  		return ret, nil
    48  	}
    49  	return 1, nil
    50  }
    51  
    52  func (mod *modImpl) SetNumInstances(module, version string, instances int) error {
    53  	mod.numInstances[moduleVersion{module, version}] = instances
    54  	return nil
    55  }
    56  
    57  func (mod *modImpl) Versions(module string) ([]string, error) {
    58  	return []string{"testVersion1", "testVersion2"}, nil
    59  }
    60  
    61  func (mod *modImpl) DefaultVersion(module string) (string, error) {
    62  	return "testVersion1", nil
    63  }
    64  
    65  func (mod *modImpl) Start(module, version string) error { return nil }
    66  func (mod *modImpl) Stop(module, version string) error  { return nil }