The latest release of Apama Community Edition provides a new connectivity plug-in which is a transport allowing the Apama correlator to access REST or other web services. The transport is a client for other webservices, rather than allowing the correlator to act as a web service itself. In order to use the HTTP client transport you need to configure a chain within the connectivity system using the correlator configuration YAML. This chain provides the mapping between Apama events inside the correlator and HTTP requests/responses to the external web service.… Read More
Hopefully you will have seen our webinar which gave an insight into the type of applications that can be built rapidly with Apama Community Edition – if not – you can see it here. This post serves as an aid alongside that, briefly describing the application that was shown and supplying links to help you get started so that you can download, run and begin expanding and changing it to suit your needs.… Read More
In the rapidly expanding ecosystems of Complex Event Processing (CEP) and Event Stream Processing (ESP, also known as Stream Processing) together known as Streaming Analytics, Apama is no longer the only choice available. The world is becoming ever more digitized, and just as the data flows grow in number and depth, so must the solutions evolve to meet these greater challenges. With both large commercial organizations and the open source community all committing their own offerings, choosing the best has never been more involved.… Read More
The suggested way of deploying Apama applications developed in Designer is by using ‘Apama Ant Export’ on the project. In this blog we will talk about how to deploy a sample on any platform without much alteration to the properties of the project. This blog assumes the reader has a basic degree of knowledge on Ant scripts.Importing a Project
Firstly, we’ll import one of the Demos already available as part of your installation.… Read More
UPDATE (17/10/2019) : there is now a community-developed tool that can help with analyzing correlator log files – see https://github.com/ApamaCommunity/apama-log-analyzer for more information.
Correlator status lines allow you to monitor the runtime operational status of a running correlator. When a project is running, correlator status lines are logged every 5 seconds when you start the correlator.
You can specify the interval at which the correlator logs status lines by providing the --logQueueSizePeriod option when you start the correlator.… Read More
The latest release of Apama Community Edition provides two new connectivity plug-ins, an MQTT transport and a native JSON Codec.MQTT Transport
This connectivity plug-in is a transport for the MQTT protocol (see http://mqtt.org/). MQTT is an extremely lightweight publish/subscribe messaging transport used widely by IoT devices. This allows the Apama correlator to send and receive events from a remote system via an MQTT broker, such as Software AG Universal Messaging.… Read More