Amazon SNS + Flock Integrations

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About Amazon SNS

The Amazon SNS platform (SNS) is a web service that enables you to send an SMS or a text-enabled mobile push notification to targeted subscribers.

About Flock

Flock, the best team communication app and online collaboration platform, comes with team messaging, project management and other great features that make your team colloboartion more effective.

Flock Integrations
Connect Amazon SNS + Flock in easier way

It's easy to connect Amazon SNS + Flock without coding knowledge. Start creating your own business flow.

Amazon Simple Notification Service (SNS. is a web service that enables the publication, distribution and consumption of messages across a variety of platforms. Flock is an online messaging app which allows you to easily connect with your friends. A user can create groups, send messages, images, files and links within group. Amazon SNS provides integration between Flock and Amazon EC2 for sending notifications about an instance status changes.SNS is a notification publishing service which push messages to the clients subscribed to a topic. The clients can be any device or application. The messages can be text or binary data. SNS delivers messages by email, HTTP POST, SQS, Facebook, SMS and other services.

The SNS topics are simple and flexible. The topics allow developers to publish information to subscribers. The topics are associated with subscriptions which define how the message should be delivered. The notifications are sent asynchronously. There are two types of notification delivery:

  • Publish-Subscribe
  • Push
  • Pull

A. Publish-SubscribeThe publish-subscribe model is one of the simplest models used in messaging. It is used more in asynchronous communications, but it also works in synchronous communications. Publishers, or producers, of messages identify themselves by name and interest in particular topics of discussion using a topic filter. A topic is a named collection of subscription filters. Subscribers, or consumers, express their interest in a topic using a topic filter. When a subscriber matches a filter for a particular topic, the subscriber will receive any messages published to that topic. The filters are very simple key value pairs and are just strings like “Linux”, “Windows” “ActionScript” etc.

B. PushPublishers of messages identify themselves by name and interest in particular topics of discussion using a topic filter. A topic is a named collection of subscription filters. Subscribers express their interest in a topic using a topic filter. When a subscriber matches a filter for a particular topic, the subscriber will receive any messages published to that topic.

C. PullSubscribers express interest in receiving messages from publishers by providing publisher names and topics of interest using subscription filters. Publishers can create multiple filters that match different combinations of publisher names and topics of interest to maximize retrieval efficiency. To minimize latency for retrieving individual messages, they can create filters that match on only 1 or 2 publishers and topics. If a publisher needs to retrieve messages from multiple publishers, it can create multiple filters, each matching one publisher and one or more topics.

Amazon Simple Notification Service (SNS. provides integration between Flock and Amazon EC2 for sending notifications about an instance status changes (e.g., termination. This integration takes place via SNS topic subscription. Both amazon SNS and flock creates an SNS topic with the following details:

  • Topic ID. flock-ec2-status/<instance-id>
  • Format. JSON
  • Encoding. UTF-8
  • Protocol. HTTPS (flock has made this optional)

E. Endpoint URL. https://sqs.<region>.amazonaws.com/<AWS account number>/<queue name>/<topic name>/<JSON format>The following table describes the notifications sent by the SNS topic created by both amazon SNS and flock:

  • Status Sent by SNS Topic Created by SNS Topic Created by Flock
  • New instance created Yes No
  • Instance terminated Yes Yes
  • Instance moved Yes No
  • Instance stopped Yes No
  • Deployment Status Sent by SNS Topic Created by SNS Topic Created by Flock
  • Deployment successful No Yes
  • Deployment failed No Yes

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