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sns.go
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sns.go
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package sns
import (
"encoding/xml"
"fmt"
"github.com/AdRoll/goamz/aws"
"net/http"
)
type SNS struct {
aws.Auth
aws.Region
service aws.Service
}
func New(auth aws.Auth, region aws.Region) (*SNS, error) {
serviceInfo := aws.ServiceInfo{region.SNSEndpoint, aws.V2Signature}
service, err := aws.NewService(auth, serviceInfo)
return &SNS{auth, region, *service}, err
}
func (sns *SNS) query(method string, params map[string]string, responseType interface{}) error {
response, err := sns.service.Query(method, "/", params)
if err != nil {
return err
} else if response.StatusCode != http.StatusOK {
return sns.service.BuildError(response)
} else {
return xml.NewDecoder(response.Body).Decode(responseType)
}
}
// Returns a list of the requester's topics. Each call returns a limited list of topics, up to 100.
// If there are more topics, a NextToken is also returned.
// Use the NextToken parameter in a new ListTopics call to get further results.
func (sns *SNS) ListTopics(nextToken string) (*ListTopicsResponse, error) {
params := aws.MakeParams("ListTopics")
if nextToken != "" {
params["NextToken"] = nextToken
}
response := &ListTopicsResponse{}
err := sns.query("GET", params, response)
return response, err
}
func (sns *SNS) ListAllTopics() ([]Topic, error) {
topics := make([]Topic, 0)
nextToken := ""
for {
response, err := sns.ListTopics(nextToken)
if err != nil {
return topics, err
}
for _, topic := range response.Topics {
topics = append(topics, topic)
}
nextToken = response.NextToken
if nextToken == "" {
break
}
}
return topics, nil
}
// Creates a topic to which notifications can be published. Users can create at most 3000 topics.
// This action is idempotent, so if the requester already owns a topic with the specified name, that topic's ARN is returned without creating a new topic.
func (sns *SNS) CreateTopic(name string) (*CreateTopicResponse, error) {
params := aws.MakeParams("CreateTopic")
params["Name"] = name
response := &CreateTopicResponse{}
err := sns.query("POST", params, response)
return response, err
}
// Deletes a topic and all its subscriptions.
// Deleting a topic might prevent some messages previously sent to the topic from being delivered to subscribers.
// This action is idempotent, so deleting a topic that does not exist does not result in an error.
func (sns *SNS) DeleteTopic(topicArn string) (*DeleteTopicResponse, error) {
params := aws.MakeParams("DeleteTopic")
params["TopicArn"] = topicArn
response := &DeleteTopicResponse{}
err := sns.query("POST", params, response)
return response, err
}
// Returns a list of the requester's subscriptions. Each call returns a limited list of subscriptions, up to 100.
// If there are more subscriptions, a NextToken is also returned.
// Use the NextToken parameter in a new ListSubscriptions call to get further results.
func (sns *SNS) ListSubscriptions(nextToken string) (*ListSubscriptionsResponse, error) {
params := aws.MakeParams("ListSubscriptions")
if nextToken != "" {
params["NextToken"] = nextToken
}
response := &ListSubscriptionsResponse{}
err := sns.query("GET", params, response)
return response, err
}
func (sns *SNS) ListAllSubscriptions() ([]Subscription, error) {
subscriptions := make([]Subscription, 0)
nextToken := ""
for {
response, err := sns.ListSubscriptions(nextToken)
if err != nil {
return subscriptions, err
}
for _, subscription := range response.Subscriptions {
subscriptions = append(subscriptions, subscription)
}
nextToken = response.NextToken
if nextToken == "" {
break
}
}
return subscriptions, nil
}
// Returns all of the properties of a topic. Topic properties returned might differ based on the authorization of the user.
func (sns *SNS) GetTopicAttributes(topicArn string) (*GetTopicAttributesResponse, error) {
params := aws.MakeParams("GetTopicAttributes")
params["TopicArn"] = topicArn
response := &GetTopicAttributesResponse{}
err := sns.query("GET", params, response)
return response, err
}
// Sets the attributes for an endpoint for a device on one of the supported push notification services, such as GCM and APNS.
func (sns *SNS) SetTopicAttributes(topicArn, attributeName, attributeValue string) (*SetTopicAttributesResponse, error) {
params := aws.MakeParams("SetTopicAttributes")
params["AttributeName"] = attributeName
params["TopicArn"] = topicArn
if attributeValue != "" {
params["AttributeValue"] = attributeValue
}
response := &SetTopicAttributesResponse{}
err := sns.query("POST", params, response)
return response, err
}
// Sends a message to all of a topic's subscribed endpoints.
// When a messageId is returned, the message has been saved and Amazon SNS will attempt to deliver it to the topic's subscribers shortly.
// The format of the outgoing message to each subscribed endpoint depends on the notification protocol selected.
// To use the Publish action for sending a message to a mobile endpoint, such as an app on a Kindle device or mobile phone, you must specify the EndpointArn.
func (sns *SNS) Publish(options *PublishOptions) (*PublishResponse, error) {
params := aws.MakeParams("Publish")
params["Message"] = options.Message
params["MessageStructure"] = options.MessageStructure
if options.Subject != "" {
params["Subject"] = options.Subject
}
if options.TopicArn != "" {
params["TopicArn"] = options.TopicArn
}
if options.TargetArn != "" {
params["TargetArn"] = options.TargetArn
}
response := &PublishResponse{}
err := sns.query("POST", params, response)
return response, err
}
// Prepares to subscribe an endpoint by sending the endpoint a confirmation message.
// To actually create a subscription, the endpoint owner must call the ConfirmSubscription action with the token from the confirmation message.
// Confirmation tokens are valid for three days.
func (sns *SNS) Subscribe(topicArn, protocol, endpoint string) (*SubscribeResponse, error) {
params := aws.MakeParams("Subscribe")
params["TopicArn"] = topicArn
params["Protocol"] = protocol
if endpoint != "" {
params["Endpoint"] = endpoint
}
response := &SubscribeResponse{}
err := sns.query("POST", params, response)
return response, err
}
func (sns *SNS) UnsubscribeFromHttp(notification *HttpNotification,
authenticateOnUnsubscribe string) (*UnsubscribeResponse, error) {
if notification.Type != MESSAGE_TYPE_NOTIFICATION {
return nil, fmt.Errorf("Expected message type \"%S\", found \"%s\"",
MESSAGE_TYPE_NOTIFICATION, notification.Type)
}
return sns.Unsubscribe(notification.TopicArn)
}
// Deletes a subscription.
// If the subscription requires authentication for deletion, only the owner of the subscription or the topic's owner can unsubscribe, and an AWS signature is required.
// If the Unsubscribe call does not require authentication and the requester is not the subscription owner, a final cancellation message is delivered to the endpoint, so that the endpoint owner can easily resubscribe to the topic if the Unsubscribe request was unintended.
func (sns *SNS) Unsubscribe(subscriptionArn string) (*UnsubscribeResponse, error) {
params := aws.MakeParams("Unsubscribe")
params["SubscriptionArn"] = subscriptionArn
response := &UnsubscribeResponse{}
err := sns.query("POST", params, response)
return response, err
}
// Verifies an endpoint owner's intent to receive messages by responding to
// json subscription notification or by re-subscribing after aving received
// an unsubscribed notification from an http post.
func (sns *SNS) ConfirmSubscriptionFromHttp(notification *HttpNotification,
authenticateOnUnsubscribe string) (*ConfirmSubscriptionResponse, error) {
if notification.Type != MESSAGE_TYPE_SUBSCRIPTION_CONFIRMATION &&
notification.Type != MESSAGE_TYPE_UNSUBSCRIBE_CONFIRMATION {
return nil, fmt.Errorf("Expected message type \"%S\" or \"%s\", found \"%s\"",
MESSAGE_TYPE_SUBSCRIPTION_CONFIRMATION, MESSAGE_TYPE_UNSUBSCRIBE_CONFIRMATION, notification.Type)
}
return sns.ConfirmSubscription(notification.TopicArn, notification.Token, authenticateOnUnsubscribe)
}
// Verifies an endpoint owner's intent to receive messages by validating the token sent to the endpoint by an earlier Subscribe action.
// If the token is valid, the action creates a new subscription and returns its Amazon Resource Name (ARN).
// This call requires an AWS signature only when the AuthenticateOnUnsubscribe flag is set to "true".
func (sns *SNS) ConfirmSubscription(topicArn, token, authenticateOnUnsubscribe string) (*ConfirmSubscriptionResponse, error) {
params := aws.MakeParams("ConfirmSubscription")
params["TopicArn"] = topicArn
params["Token"] = token
if authenticateOnUnsubscribe != "" {
params["AuthenticateOnUnsubscribe"] = authenticateOnUnsubscribe
}
response := &ConfirmSubscriptionResponse{}
err := sns.query("POST", params, response)
return response, err
}
// Returns all of the properties of a subscription.
func (sns *SNS) GetSubscriptionAttributes(subscriptionArn string) (*GetSubscriptionAttributesResponse, error) {
params := aws.MakeParams("GetSubscriptionAttributes")
params["SubscriptionArn"] = subscriptionArn
response := &GetSubscriptionAttributesResponse{}
err := sns.query("GET", params, response)
return response, err
}
// Allows a subscription owner to set an attribute of the topic to a new value.
func (sns *SNS) SetSubscriptionAttributes(subscriptionArn, attributeName, attributeValue string) (*SetSubscriptionAttributesResponse, error) {
params := aws.MakeParams("SetSubscriptionAttributes")
params["SubscriptionArn"] = subscriptionArn
params["AttributeName"] = attributeName
if attributeValue != "" {
params["AttributeValue"] = attributeValue
}
response := &SetSubscriptionAttributesResponse{}
err := sns.query("POST", params, response)
return response, err
}
// Adds a statement to a topic's access control policy, granting access for the specified AWS accounts to the specified actions.
func (sns *SNS) AddPermission(label, topicArn string, permissions []Permission) (*AddPermissionResponse, error) {
params := aws.MakeParams("AddPermission")
params["Label"] = label
params["TopicArn"] = topicArn
for i, permission := range permissions {
params[fmt.Sprintf("AWSAccountId.member.%d", i+1)] = permission.AccountId
params[fmt.Sprintf("ActionName.member.%d", i+1)] = permission.ActionName
}
response := &AddPermissionResponse{}
err := sns.query("POST", params, response)
return response, err
}
// Removes a statement from a topic's access control policy.
func (sns *SNS) RemovePermission(label, topicArn string) (*RemovePermissionResponse, error) {
params := aws.MakeParams("RemovePermission")
params["Label"] = label
params["TopicArn"] = topicArn
response := &RemovePermissionResponse{}
err := sns.query("POST", params, response)
return response, err
}
// Returns a list of the subscriptions to a specific topic.
// Each call returns a limited list of subscriptions, up to 100.
// If there are more subscriptions, a NextToken is also returned.
// Use the NextToken parameter in a new ListSubscriptionsByTopic call to get further results.
func (sns *SNS) ListSubscriptionsByTopic(topicArn, nextToken string) (*ListSubscriptionByTopicResponse, error) {
params := aws.MakeParams("ListSubscriptionsByTopic")
params["TopicArn"] = topicArn
if nextToken != "" {
params["NextToken"] = nextToken
}
response := &ListSubscriptionByTopicResponse{}
err := sns.query("GET", params, response)
return response, err
}
// Returns a list of the all subscriptions to a specific topic.
func (sns *SNS) ListAllSubscriptionsByTopic(topicArn string) ([]Subscription, error) {
subscriptions := make([]Subscription, 0)
nextToken := ""
for {
response, err := sns.ListSubscriptionsByTopic(topicArn, nextToken)
if err != nil {
return subscriptions, err
}
for _, subscription := range response.Subscriptions {
subscriptions = append(subscriptions, subscription)
}
nextToken = response.NextToken
if nextToken == "" {
break
}
}
return subscriptions, nil
}
// Creates a platform application object for one of the supported push notification services, such as APNS and GCM, to which devices and mobile apps may register.
// You must specify PlatformPrincipal and PlatformCredential attributes when using the CreatePlatformApplication action.
func (sns *SNS) CreatePlatformApplication(name, platform string, attributes []Attribute) (*CreatePlatformApplicationResponse, error) {
params := aws.MakeParams("CreatePlatformApplication")
params["Name"] = name
params["Platform"] = platform
for i, attr := range attributes {
params[fmt.Sprintf("Attributes.entry.%d.key", i+1)] = attr.Key
params[fmt.Sprintf("Attributes.entry.%d.value", i+1)] = attr.Value
}
response := &CreatePlatformApplicationResponse{}
err := sns.query("POST", params, response)
return response, err
}
// Creates an endpoint for a device and mobile app on one of the supported push notification services, such as GCM and APNS.
// CreatePlatformEndpoint requires the PlatformApplicationArn that is returned from CreatePlatformApplication.
// The EndpointArn that is returned when using CreatePlatformEndpoint can then be used by the Publish action to send a message to a mobile app or by the Subscribe action for subscription to a topic.
// The CreatePlatformEndpoint action is idempotent, so if the requester already owns an endpoint with the same device token and attributes, that endpoint's ARN is returned without creating a new endpoint.
func (sns *SNS) CreatePlatformEndpoint(options *PlatformEndpointOptions) (*CreatePlatformEndpointResponse, error) {
params := aws.MakeParams("CreatePlatformEndpoint")
params["PlatformApplicationArn"] = options.PlatformApplicationArn
params["Token"] = options.Token
if options.CustomUserData != "" {
params["CustomUserData"] = options.CustomUserData
}
for i, attr := range options.Attributes {
params[fmt.Sprintf("Attributes.entry.%d.key", i+1)] = attr.Key
params[fmt.Sprintf("Attributes.entry.%d.value", i+1)] = attr.Value
}
response := &CreatePlatformEndpointResponse{}
err := sns.query("POST", params, response)
return response, err
}
// Deletes the endpoint from Amazon SNS. This action is idempotent.
func (sns *SNS) DeleteEndpoint(endpointArn string) (*DeleteEndpointResponse, error) {
params := aws.MakeParams("DeleteEndpoint")
params["EndpointArn"] = endpointArn
response := &DeleteEndpointResponse{}
err := sns.query("POST", params, response)
return response, err
}
// Deletes a platform application object for one of the supported push notification services, such as APNS and GCM
func (sns *SNS) DeletePlatformApplication(platformApplicationArn string) (*DeletePlatformApplicationResponse, error) {
params := aws.MakeParams("DeletePlatformApplication")
params["PlatformApplicationArn"] = platformApplicationArn
response := &DeletePlatformApplicationResponse{}
err := sns.query("POST", params, response)
return response, err
}
// Retrieves the endpoint attributes for a device on one of the supported push notification services, such as GCM and APNS
func (sns *SNS) GetEndpointAttributes(endpointArn string) (*GetEndpointAttributesResponse, error) {
params := aws.MakeParams("GetEndpointAttributes")
params["EndpointArn"] = endpointArn
response := &GetEndpointAttributesResponse{}
err := sns.query("GET", params, response)
return response, err
}
// Retrieves the attributes of the platform application object for the supported push notification services, such as APNS and GCM
func (sns *SNS) GetPlatformApplicationAttributes(platformApplicationArn string) (*GetPlatformApplicationAttributesResponse, error) {
params := aws.MakeParams("GetPlatformApplicationAttributes")
params["PlatformApplicationArn"] = platformApplicationArn
response := &GetPlatformApplicationAttributesResponse{}
err := sns.query("GET", params, response)
return response, err
}
// Lists the endpoints and endpoint attributes for devices in a supported push notification service, such as GCM and APNS.
// The results for ListEndpointsByPlatformApplication are paginated and return a limited list of endpoints, up to 100.
// If additional records are available after the first page results, then a NextToken string will be returned.
// To receive the next page, you call ListEndpointsByPlatformApplication again using the NextToken string received from the previous call.
// When there are no more records to return, NextToken will be null.
func (sns *SNS) ListEndpointsByPlatformApplication(platformApplicationArn, nextToken string) (*ListEndpointsByPlatformApplicationResponse, error) {
params := aws.MakeParams("ListEndpointsByPlatformApplication")
params["PlatformApplicationArn"] = platformApplicationArn
if nextToken != "" {
params["NextToken"] = nextToken
}
response := &ListEndpointsByPlatformApplicationResponse{}
err := sns.query("GET", params, response)
return response, err
}
func (sns *SNS) ListAllEndpointsByPlatformApplication(platformApplicationArn string) ([]Endpoint, error) {
endpoints := make([]Endpoint, 0)
nextToken := ""
for {
response, err := sns.ListEndpointsByPlatformApplication(platformApplicationArn, nextToken)
if err != nil {
return endpoints, err
}
for _, endpoint := range response.Endpoints {
endpoints = append(endpoints, endpoint)
}
nextToken = response.NextToken
if nextToken == "" {
break
}
}
return endpoints, nil
}
// Lists the platform application objects for the supported push notification services, such as APNS and GCM.
// The results for ListPlatformApplications are paginated and return a limited list of applications, up to 100.
// If additional records are available after the first page results, then a NextToken string will be returned.
// To receive the next page, you call ListPlatformApplications using the NextToken string received from the previous call.
// When there are no more records to return, NextToken will be null.
func (sns *SNS) ListPlatformApplications(nextToken string) (*ListPlatformApplicationsResponse, error) {
params := aws.MakeParams("ListPlatformApplications")
if nextToken != "" {
params["NextToken"] = nextToken
}
response := &ListPlatformApplicationsResponse{}
err := sns.query("GET", params, response)
return response, err
}
func (sns *SNS) ListAllPlatformApplications() ([]PlatformApplication, error) {
applications := make([]PlatformApplication, 0)
nextToken := ""
for {
response, err := sns.ListPlatformApplications(nextToken)
if err != nil {
return applications, err
}
for _, app := range response.PlatformApplications {
applications = append(applications, app)
}
nextToken = response.NextToken
if nextToken == "" {
break
}
}
return applications, nil
}
// Sets the attributes for an endpoint for a device on one of the supported push notification services, such as GCM and APNS
func (sns *SNS) SetEndpointAttributes(endpointArn string, attributes []Attribute) (*SetEndpointAttributesResponse, error) {
params := aws.MakeParams("SetEndpointAttributes")
params["EndpointArn"] = endpointArn
for i, attr := range attributes {
params[fmt.Sprintf("Attributes.entry.%d.key", i+1)] = attr.Key
params[fmt.Sprintf("Attributes.entry.%d.value", i+1)] = attr.Value
}
response := &SetEndpointAttributesResponse{}
err := sns.query("POST", params, response)
return response, err
}
// Sets the attributes of the platform application object for the supported push notification services, such as APNS and GCM
func (sns *SNS) SetPlatformApplicationAttributes(platformApplicationArn string, attributes []Attribute) (*SetPlatformApplicationAttributesResponse, error) {
params := aws.MakeParams("SetPlatformApplicationAttributes")
params["PlatformApplicationArn"] = platformApplicationArn
for i, attr := range attributes {
params[fmt.Sprintf("Attributes.entry.%d.key", i+1)] = attr.Key
params[fmt.Sprintf("Attributes.entry.%d.value", i+1)] = attr.Value
}
response := &SetPlatformApplicationAttributesResponse{}
err := sns.query("POST", params, response)
return response, err
}