Apache Plugins Project
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| Apache Plugins Project | |
|---|---|
| Name | Apache Plugins Project |
| Developer | Apache Software Foundation |
| Programming language | Java, C, C++ |
| Operating system | Cross-platform |
| License | Apache License 2.0 |
Apache Plugins Project
The Apache Plugins Project provides a set of modular extensions and adapters for web servers, proxy servers, and application servers used in enterprise and cloud environments. It supplies plugin modules, native libraries, and integration layers that enable interoperability between Apache HTTP Server, Tomcat (software), Jetty, NGINX, Microsoft Internet Information Services, and a range of Java SE-based frameworks. The project aims to simplify deployment scenarios for Linux, Windows, macOS, and container platforms like Docker and Kubernetes (software).
Overview
The project focuses on producing plugin artifacts that integrate with web infrastructure from Oracle, Red Hat, IBM, Google, and Amazon Web Services ecosystems. Typical deliverables include connector modules for HTTP/1.1 and HTTP/2, native proxy handlers, and authentication adapters compatible with OpenID Connect, SAML 2.0, and OAuth 2.0. It supports build systems such as Apache Maven, Gradle, and continuous delivery tools like Jenkins and GitLab CI/CD. The project aligns with standards set by organizations such as the IETF and W3C for protocol compliance.
History
Origins trace back to early efforts to bridge servlet containers like Apache Tomcat with the Apache HTTP Server via connector modules developed by teams at Apache Software Foundation and contributors from Sun Microsystems and BEA Systems. Over time, contributors from Red Hat and IBM expanded support to additional servers and platforms, influenced by production deployments at Facebook, LinkedIn, and Twitter. Major milestones include adding native protocol support for HTTP/2 and integrating intelligence for load balancing used by Netflix and cloud providers such as Google Cloud Platform and Amazon Web Services.
Architecture and Components
The architecture centers on pluggable connector interfaces that decouple server-specific APIs from protocol handlers. Core components include: - Native connector modules implemented in C and C++ for low-level I/O and memory management, interoperating with JNI for Java runtimes. - Java adapters that implement servlet and filter chains compatible with Jakarta Servlet specifications used by Tomcat (software), Jetty, and GlassFish. - Security adapters supporting OpenID Connect, SAML 2.0, and OAuth 2.0 workflows, integrating with identity providers like Okta and Auth0. - Build artifacts and packaging for distributions used by Ubuntu, Debian, CentOS, and Red Hat Enterprise Linux.
The design borrows patterns from middleware projects such as Apache HttpComponents, Apache Commons, and Netty, while leveraging deployment models used by Heroku and Pivotal Cloud Foundry.
Development and Governance
Governance follows the Apache Software Foundation model with a Project Management Committee, release managers, and elected committers. Development uses Git for source control hosted on platforms that mirror GitHub and Apache GitBox, with issue tracking via JIRA historically and migration paths to GitHub Issues. Continuous integration relies on Jenkins and cloud runners such as Travis CI and GitLab CI/CD. Licensing is governed by the Apache License and contributor agreements similar to practices at OpenStack and Kubernetes (software).
Usage and Integrations
Deployments occur across enterprises using Apache HTTP Server front-ends with backend containers running Tomcat (software), Jetty, or WildFly. Integrations include reverse proxy setups for NGINX and caching front-ends like Varnish, as well as service meshes exemplified by Istio and Linkerd. The plugins facilitate integration with monitoring and observability tools such as Prometheus, Grafana, ELK Stack, and Zipkin, and support configuration management systems including Ansible, Puppet, and Chef.
Security and Maintenance
Security practices mirror those adopted by major ASF projects and vendors like Red Hat and Oracle. Vulnerability disclosure and CVE handling coordinate with organizations such as MITRE and follow procedures practiced by OpenSSL and GnuPG projects. Maintenance releases address issues in native code, JNI boundaries, and cryptographic implementations that interact with libraries like OpenSSL. Backporting, long-term support, and compatibility testing are conducted across distributions like Debian and Red Hat Enterprise Linux.
Community and Contributions
The community comprises volunteers, corporate contributors from IBM, Red Hat, Google, Amazon Web Services, and independent committers. Contributions follow the Apache Software Foundation processes requiring sign-off by committers and validation by release managers. Documentation and examples often reference deployments at organizations such as LinkedIn, Netflix, and Facebook, while outreach happens at conferences like ApacheCon, KubeCon, and DevOpsDays. Users engage through mailing lists, issue trackers, and public repositories, contributing code, tests, and documentation that align with practices used by projects including Apache HTTP Server and Tomcat (software).