118 lines
2.8 KiB
Go
118 lines
2.8 KiB
Go
/*
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Copyright 2021 The Dapr Authors
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package amqp
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import (
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"encoding/pem"
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"fmt"
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"strconv"
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"time"
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"github.com/dapr/components-contrib/pubsub"
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"github.com/dapr/kit/logger"
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)
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const (
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// errors.
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errorMsgPrefix = "amqp pub sub error:"
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)
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type metadata struct {
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tlsCfg
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url string
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username string
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password string
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anonymous bool
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}
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type tlsCfg struct {
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caCert string
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clientCert string
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clientKey string
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}
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const (
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// Keys
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amqpURL = "url"
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anonymous = "anonymous"
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username = "username"
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password = "password"
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amqpCACert = "caCert"
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amqpClientCert = "clientCert"
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amqpClientKey = "clientKey"
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defaultWait = 30 * time.Second
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)
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// isValidPEM validates the provided input has PEM formatted block.
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func isValidPEM(val string) bool {
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block, _ := pem.Decode([]byte(val))
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return block != nil
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}
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func parseAMQPMetaData(md pubsub.Metadata, log logger.Logger) (*metadata, error) {
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m := metadata{anonymous: false}
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// required configuration settings
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if val, ok := md.Properties[amqpURL]; ok && val != "" {
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m.url = val
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} else {
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return &m, fmt.Errorf("%s missing url", errorMsgPrefix)
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}
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// optional configuration settings
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if val, ok := md.Properties[anonymous]; ok && val != "" {
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var err error
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m.anonymous, err = strconv.ParseBool(val)
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if err != nil {
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return &m, fmt.Errorf("%s invalid anonymous %s, %s", errorMsgPrefix, val, err)
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}
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}
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if !m.anonymous {
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if val, ok := md.Properties[username]; ok && val != "" {
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m.username = val
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} else {
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return &m, fmt.Errorf("%s missing username", errorMsgPrefix)
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}
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if val, ok := md.Properties[password]; ok && val != "" {
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m.password = val
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} else {
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return &m, fmt.Errorf("%s missing username", errorMsgPrefix)
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}
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}
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if val, ok := md.Properties[amqpCACert]; ok && val != "" {
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if !isValidPEM(val) {
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return &m, fmt.Errorf("%s invalid caCert", errorMsgPrefix)
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}
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m.tlsCfg.caCert = val
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}
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if val, ok := md.Properties[amqpClientCert]; ok && val != "" {
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if !isValidPEM(val) {
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return &m, fmt.Errorf("%s invalid clientCert", errorMsgPrefix)
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}
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m.tlsCfg.clientCert = val
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}
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if val, ok := md.Properties[amqpClientKey]; ok && val != "" {
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if !isValidPEM(val) {
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return &m, fmt.Errorf("%s invalid clientKey", errorMsgPrefix)
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}
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m.tlsCfg.clientKey = val
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}
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return &m, nil
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}
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