components-contrib/pubsub/aws/snssqs/policy.go

66 lines
1.6 KiB
Go

/*
Copyright 2021 The Dapr 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 snssqs
type arnEquals struct {
AwsSourceArn string `json:"aws:SourceArn"`
}
type condition struct {
ValueArnEquals arnEquals `json:"ArnEquals"`
}
type principal struct {
Service string
}
type statement struct {
Effect string
Principal principal
Action string
Resource string
Condition condition
}
type policy struct {
Version string
Statement []statement
}
func (p *policy) tryInsertCondition(sqsArn string, snsArn string) bool {
for _, s := range p.Statement {
// if there is a statement for sqsArn
if s.Resource == sqsArn {
// check if the snsArn already exists then return true
if s.Condition.ValueArnEquals.AwsSourceArn == snsArn {
return true
}
}
}
// insert a new statement if no statement for the sqsArn or is new sns subscriber
newStatement := &statement{
Effect: "Allow",
Principal: principal{Service: "sns.amazonaws.com"},
Action: "sqs:SendMessage",
Resource: sqsArn,
Condition: condition{
ValueArnEquals: arnEquals{
AwsSourceArn: snsArn,
},
},
}
p.Statement = append(p.Statement, *newStatement)
return false
}