/
plugins.go
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/
plugins.go
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// Licensed to the Apache Software Foundation (ASF) under one or more
// contributor license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright ownership.
// The ASF licenses this file to You 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 plugins
import (
"go.uber.org/zap"
"github.com/apache/apisix-ingress-controller/pkg/log"
"github.com/apache/apisix-ingress-controller/pkg/providers/ingress/translation/annotations"
apisix "github.com/apache/apisix-ingress-controller/pkg/types/apisix/v1"
)
// Handler abstracts the behavior so that the apisix-ingress-controller knows
// how to parse some annotations and convert them to APISIX plugins.
type PluginAnnotationsHandler interface {
// Handle parses the target annotation and converts it to the type-agnostic structure.
// The return value might be nil since some features have an explicit switch, users should
// judge whether Handle is failed by the second error value.
Handle(annotations.Extractor) (interface{}, error)
// PluginName returns a string which indicates the target plugin name in APISIX.
PluginName() string
}
var (
_handlers = []PluginAnnotationsHandler{
NewCorsHandler(),
NewIPRestrictionHandler(),
NewRewriteHandler(),
NewRedirectHandler(),
NewForwardAuthHandler(),
NewBasicAuthHandler(),
NewKeyAuthHandler(),
NewCSRFHandler(),
NewHttpMethodHandler(),
}
)
type plugins struct{}
func NewParser() annotations.IngressAnnotationsParser {
return &plugins{}
}
func (p *plugins) Parse(e annotations.Extractor) (interface{}, error) {
plugins := make(apisix.Plugins)
for _, handler := range _handlers {
out, err := handler.Handle(e)
if err != nil {
log.Warnw("failed to handle annotations",
zap.Error(err),
)
continue
}
if out != nil {
plugins[handler.PluginName()] = out
}
}
return plugins, nil
}