// handleSingleMessage processes a single refresh credentials message.
func (refreshHandler *refreshCredentialsHandler) handleSingleMessage(message *ecsacs.IAMRoleCredentialsMessage) error {
// Validate fields in the message
err := validateIAMRoleCredentialsMessage(message)
if err != nil {
seelog.Errorf("Error validating credentials message: %v", err)
return err
}
taskArn := aws.StringValue(message.TaskArn)
messageId := aws.StringValue(message.MessageId)
task, ok := refreshHandler.taskEngine.GetTaskByArn(taskArn)
if !ok {
seelog.Errorf("Task not found in the engine for the arn in credentials message, arn: %s, messageId: %s", taskArn, messageId)
return fmt.Errorf("Task not found in the engine for the arn in credentials message, arn: %s", taskArn)
}
taskCredentials := credentials.TaskIAMRoleCredentials{
ARN: taskArn,
IAMRoleCredentials: credentials.IAMRoleCredentialsFromACS(message.RoleCredentials),
}
err = refreshHandler.credentialsManager.SetTaskCredentials(taskCredentials)
if err != nil {
seelog.Errorf("Error updating credentials, err: %v messageId: %s", err, messageId)
return fmt.Errorf("Error updating credentials %v", err)
}
task.SetCredentialsId(aws.StringValue(message.RoleCredentials.CredentialsId))
go func() {
response := &ecsacs.IAMRoleCredentialsAckRequest{
Expiration: message.RoleCredentials.Expiration,
MessageId: message.MessageId,
CredentialsId: message.RoleCredentials.CredentialsId,
}
refreshHandler.ackRequest <- response
}()
return nil
}
// addPayloadTasks does validation on each task and, for all valid ones, adds
// it to the task engine. It returns a bool indicating if it could add every
// task to the taskEngine and a slice of credential ack requests
func (payloadHandler *payloadRequestHandler) addPayloadTasks(payload *ecsacs.PayloadMessage) ([]*ecsacs.IAMRoleCredentialsAckRequest, bool) {
// verify thatwe were able to work with all tasks in this payload so we know whether to ack the whole thing or not
allTasksOK := true
validTasks := make([]*api.Task, 0, len(payload.Tasks))
for _, task := range payload.Tasks {
if task == nil {
seelog.Criticalf("Recieved nil task for messageId: %s", *payload.MessageId)
allTasksOK = false
continue
}
apiTask, err := api.TaskFromACS(task, payload)
if err != nil {
payloadHandler.handleUnrecognizedTask(task, err, payload)
allTasksOK = false
continue
}
if task.RoleCredentials != nil {
// The payload from ACS for the task has credentials for the
// task. Add those to the credentials manager and set the
// credentials id for the task as well
taskCredentials := credentials.TaskIAMRoleCredentials{
ARN: aws.StringValue(task.Arn),
IAMRoleCredentials: credentials.IAMRoleCredentialsFromACS(task.RoleCredentials),
}
err = payloadHandler.credentialsManager.SetTaskCredentials(taskCredentials)
if err != nil {
payloadHandler.handleUnrecognizedTask(task, err, payload)
allTasksOK = false
continue
}
apiTask.SetCredentialsId(taskCredentials.IAMRoleCredentials.CredentialsId)
}
validTasks = append(validTasks, apiTask)
}
// Add 'stop' transitions first to allow seqnum ordering to work out
// Because a 'start' sequence number should only be proceeded if all 'stop's
// of the same sequence number have completed, the 'start' events need to be
// added after the 'stop' events are there to block them.
stoppedTasksCredentialsAcks, stoppedTasksAddedOK := payloadHandler.addTasks(payload, validTasks, isTaskStatusNotStopped)
newTasksCredentialsAcks, newTasksAddedOK := payloadHandler.addTasks(payload, validTasks, isTaskStatusStopped)
if !stoppedTasksAddedOK || !newTasksAddedOK {
allTasksOK = false
}
// Construct a slice with credentials acks from all tasks
var credentialsAcks []*ecsacs.IAMRoleCredentialsAckRequest
credentialsAcks = append(stoppedTasksCredentialsAcks, newTasksCredentialsAcks...)
return credentialsAcks, allTasksOK
}