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// Copyright 2016 The LUCI Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package featureBreaker
import (
"golang.org/x/net/context"
"go.chromium.org/luci/gae/service/module"
)
type modState struct {
*state
c context.Context
module.RawInterface
}
func (m *modState) List() (ret []string, err error) {
err = m.run(m.c, func() (err error) {
ret, err = m.RawInterface.List()
return
})
return
}
func (m *modState) NumInstances(mod, ver string) (ret int, err error) {
err = m.run(m.c, func() (err error) {
ret, err = m.RawInterface.NumInstances(mod, ver)
return
})
return
}
func (m *modState) SetNumInstances(mod, ver string, instances int) error {
return m.run(m.c, func() (err error) {
return m.RawInterface.SetNumInstances(mod, ver, instances)
})
}
func (m *modState) Versions(mod string) (ret []string, err error) {
err = m.run(m.c, func() (err error) {
ret, err = m.RawInterface.Versions(mod)
return
})
return
}
func (m *modState) DefaultVersion(mod string) (ret string, err error) {
err = m.run(m.c, func() (err error) {
ret, err = m.RawInterface.DefaultVersion(mod)
return
})
return
}
func (m *modState) Start(mod, ver string) error {
return m.run(m.c, func() (err error) {
return m.RawInterface.Start(mod, ver)
})
}
func (m *modState) Stop(mod, ver string) error {
return m.run(m.c, func() (err error) {
return m.RawInterface.Stop(mod, ver)
})
}
// FilterModule installs a featureBreaker module filter in the context.
func FilterModule(c context.Context, defaultError error) (context.Context, FeatureBreaker) {
state := newState(defaultError)
return module.AddFilters(c, func(ic context.Context, i module.RawInterface) module.RawInterface {
return &modState{state, ic, i}
}), state
}