One thing that is common in the enterprise world, especially in highly regulated industries, is to have separation of duties. Role-based access controls (RBAC) have built-in support for separation of duties. Roles determine what operations a user can and cannot perform. This post provides an example of how to configure proper RBAC on top of Red Hat AMQ, a flexible, high-performance messaging platform based on the open source Apache ActiveMQ Artemis project.
In most of the cases, separation of duties on Red Hat AMQ can be divided into three primary roles:
- Administrator role, which will have all permissions
- Application role, which will have permission to publish, consume, or produce messages to a specific address, subscribe to topics or queues, or create and delete addresses.
- Operation role, which will have read-only permission via the web console or supported protocols
To implement those roles, Red Hat AMQ has several security features that need be configured, as described in the following sections.
Continue reading “Setting up RBAC on Red Hat AMQ Broker”
Red Hat Decision Manager provides a vast array of decision management functionality. From the Decision Tables feature in the new Decision Model and Notation (DMN) v1.1, which implements the full FEEL Compliance Level 3 of the DMN specification, to Predictive Model Markup Language (PMML).
Another powerful feature is the Complex Event Processing (CEP) engine. This engine provides the ability to detect, correlate, abstract, aggregate or compose and react to events. In other words, the technology provides techniques to infer complex events from simple events, react to the events of interest, and take actions. The main difference between CEP and normal rules execution is the notion of time. Where standard rules execution in Decision Manager deals with facts and reasoning over these facts, the CEP engine focusses on events. An event represents a significant change of state at a particular point in time or interval.
Recently, I was asked to demonstrate how Decision Manager CEP can be used in a real-time credit card fraud detection system. One of the requirements I was presented with ended up in an interesting rule implementation that forms the basis of this article. The requirement was defined as follows:
Continue reading “Detecting credit card fraud with Red Hat Decision Manager 7”
SOAP-based services are plentiful in many enterprise solutions and are slowly being replaced by RESTful services to simplify their use. There is a new wizard to help you make the transition with Apache Camel’s Rest DSL added in the latest version of Red Hat Fuse Tooling. This article shows how to use the new wizard to transition from older SOAP-based services to more modern REST-based services.
If you aren’t familiar, Red Hat Fuse is an integration platform based on Camel and a number of other projects. The updating Fuse Tooling is available in Red Hat Developer Studio 12.0.0, the desktop IDE that is based on Eclipse 4.8 Photon. You can also get the new wizard by adding JBoss Tools 4.6 to your existing Eclipse 4.8 Photon installation by downloading it directly, or installing via the Eclipse Marketplace.
Continue reading “How to migrate your SOAP web service to REST with Camel”
There is a major push in the United Kingdom to replace aging mechanical electricity meters with connected smart meters. New meters allow consumers to more closely monitor their energy usage and associated cost, and they enable the suppliers to automate the billing process because the meters automatically report fine-grained energy use.
This post describes an architecture for processing a stream of meter readings using Strimzi, which offers support for running Apache Kafka in a container environment (Red Hat OpenShift). The data has been made available through a UK research project that collected data from energy producers, distributors, and consumers from 2011 to 2014. The TC1a dataset used here contains data from 8,000 domestic customers on half-hour intervals in the following form:
Continue reading “Smart-Meter Data Processing Using Apache Kafka on OpenShift”
This is part one of my two-article series that demonstrates how to implement contract-first API design using Apicurio and Red Hat Fuse. It covers how to create an OpenAPI standard document as the contract between API providers and consumers using Apicurio Studio. It also shows how to quickly create mock tests using Red Hat Fuse which is based on Camel.
There are two common approaches when it comes to creating APIs:
- Code first (top-down)
- Contract first (bottom-up)
Continue reading “Contract-First API Design with Apicurio and Red Hat Fuse/Camel”
Apache Camel URI completion has already been available for XML DSL in Eclipse Desktop, Eclipse Che, Red Hat OpenShift.io, Visual Studio Code and IntelliJ. However, for Java DSL it was available only in IntelliJ. But Visual Studio Code and Eclipse Desktop are now also providing the Apache Camel URI completion for Java DSL.
Below, you can see it in action:
Continue reading “Apache Camel URI Completion with Java DSL”
In this article, we will use a Python-based messaging client to connect and subscribe to a topic with a durable subscription in the Apache ActiveMQ Artemis broker. We will use the text-based STOMP protocol to connect and subscribe to the broker. STOMP clients can communicate with any STOMP message broker to provide messaging interoperability among many languages, platforms, and brokers.
If you need to brush up on the difference between persistence and durability in messaging, check Mary Cochran’s article on developers.redhat.com/blog.
A similar process can be used with Red Hat AMQ 7. The broker in Red Hat AMQ 7 is based on the Apache ActiveMQ Artemis project. See the overview on developers.redhat.com for more information.
Continue reading “Using the STOMP Protocol with Apache ActiveMQ Artemis Broker”
As part of Red Hat JBoss Fuse 7, Red Hat introduces a new Integration Platform as a Service (iPaaS) called Fuse Ignite. Gartner uses the term citizen integrators to describe the iPaaS target market: folks who aren’t regularly concerned with integration. In my opinion, this market includes Electronic Data Interchange (EDI) analysts who focus on business rules and validations, rather than worrying about lines of code or Apache Camel routes. Therefore, Fuse Ignite introduces a mechanism to separate concerns, allowing EDI analysts to focus on their business mappings and transformations. On the other hand, developers can focus on low-level integration with systems and on writing code. Fuse Ignite offers a platform on which both citizen integrators and developers can coexist, collaborate, and contribute to an end-to-end integration.
Continue reading “EDI Transformations with Fuse Ignite and Trace Transformer”
Monitoring Red Hat AMQ 7
Red Hat AMQ 7 includes some tools for monitoring the Red Hat AMQ broker. These tools allow you to get metrics about the performance and behavior of the broker and its resources. Metrics are very important for measuring performance and for identifying issues that are causing poor performance.
The following components are included for monitoring the Red Hat AMQ 7 broker:
- Management web console that is based on Hawtio: This console includes some perspectives and dashboards for monitoring the most important components of the broker.
- A Jolokia REST-like API: This provides full access to JMX beans through HTTP requests.
- Red Hat JBoss Operation Network: This is an enterprise, Java-based administration and management platform for developing, testing, deploying, and monitoring Red Hat JBoss Middleware applications.
These tools are incredible and fully integrated with the original product. However, there are cases where Red Hat AMQ 7 is deployed in environments where other tools are used to monitor the broker, for example,
Continue reading “Monitoring Red Hat AMQ 7 with the jmxtrans Agent”
Red Hat Fuse 7 (formerly called Red Hat JBoss Fuse) is now officially available. This cloud-native, distributed solution allows developers to easily develop, deploy and scale integration applications. Architects can compose and orchestrate microservices with Red Hat Fuse to introduce agility to the systems. In this release, Fuse also empowers integration experts and business users to become more productive with the self-service low-code platform. With this new agile integration solution, enterprises can now engage in wider collaboration with and among partners at a much quicker pace.
Here’s where you can download it: https://developers.redhat.com/products/fuse/download/.
What’s in Fuse 7?
Continue reading “Red Hat Fuse 7 Is Now Available”