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matcher.go
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matcher.go
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// Copyright 2020 The PipeCD 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 notifier
import (
"github.com/pipe-cd/pipecd/pkg/config"
"github.com/pipe-cd/pipecd/pkg/model"
)
type matcher struct {
events map[string]struct{}
ignoreEvents map[string]struct{}
groups map[string]struct{}
ignoreGroups map[string]struct{}
apps map[string]struct{}
ignoreApps map[string]struct{}
envs map[string]struct{}
ignoreEnvs map[string]struct{}
}
func newMatcher(cfg config.NotificationRoute) *matcher {
return &matcher{
events: makeStringMap(cfg.Events, "EVENT"),
ignoreEvents: makeStringMap(cfg.IgnoreEvents, "EVENT"),
groups: makeStringMap(cfg.Groups, "EVENT"),
ignoreGroups: makeStringMap(cfg.IgnoreGroups, "EVENT"),
apps: makeStringMap(cfg.Apps, ""),
ignoreApps: makeStringMap(cfg.IgnoreApps, ""),
envs: makeStringMap(cfg.Envs, ""),
ignoreEnvs: makeStringMap(cfg.IgnoreEnvs, ""),
}
}
type appNameMetadata interface {
GetAppName() string
}
type envNameMetadata interface {
GetEnvName() string
}
func (m *matcher) Match(event model.NotificationEvent) bool {
if _, ok := m.ignoreEvents[event.Type.String()]; ok {
return false
}
if _, ok := m.ignoreGroups[event.Group().String()]; ok {
return false
}
var appName string
if md, ok := event.Metadata.(appNameMetadata); ok {
appName = md.GetAppName()
}
if _, ok := m.ignoreApps[appName]; ok && appName != "" {
return false
}
var envName string
if md, ok := event.Metadata.(envNameMetadata); ok {
envName = md.GetEnvName()
}
if _, ok := m.ignoreEnvs[envName]; ok && envName != "" {
return false
}
if len(m.events) > 0 {
if _, ok := m.events[event.Type.String()]; !ok {
return false
}
}
if len(m.groups) > 0 {
if _, ok := m.groups[event.Group().String()]; !ok {
return false
}
}
if len(m.apps) > 0 && appName != "" {
if _, ok := m.apps[appName]; !ok {
return false
}
}
if len(m.envs) > 0 && envName != "" {
if _, ok := m.envs[envName]; !ok {
return false
}
}
return true
}
func makeStringMap(keys []string, prefix string) map[string]struct{} {
m := make(map[string]struct{}, len(keys))
for _, k := range keys {
if prefix != "" {
k = prefix + "_" + k
}
m[k] = struct{}{}
}
return m
}