[CAMEL-17116] components - Loading resource from classpath should use ClassResolver API

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.13.0
• Estimated Complexity: Unknown
• Assignee: Ramu
• Reporter: Claus Ibsen
• Created: 21/Oct/21 04:52
• Updated: 21/Jan/22 09:24
• Resolved: 25/Oct/21 10:25

Description

See CAMEL-17114

There are a number of components that load resources from classpath as:

camel-infinispan/camel-infinispan-common/src/main/java/org/apache/camel/component/infinispan/InfinispanUtil.java:        return Thread.currentThread().getContextClassLoader().getResourceAsStream(uri);
camel-jbpm/src/main/java/org/apache/camel/component/jbpm/server/CamelKieServerExtension.java:            try (InputStream is = this.getClass().getResourceAsStream("/global-camel-routes.xml")) {
camel-jbpm/src/main/java/org/apache/camel/component/jbpm/server/CamelKieServerExtension.java:        try (InputStream is = classloader.getResourceAsStream("camel-routes.xml")) {
camel-jira/src/main/java/org/apache/camel/component/jira/oauth/OAuthAsynchronousHttpClientFactory.java:            try (InputStream resourceAsStream = AuthenticationHandler.class.getResourceAsStream(pomProps)) {
camel-jslt/src/main/java/org/apache/camel/component/jslt/JsltEndpoint.java:                    stream = JsltEndpoint.class.getClassLoader().getResourceAsStream(getResourceUri());
camel-quartz/src/main/java/org/apache/camel/component/quartz/QuartzComponent.java:            InputStream is = StdSchedulerFactory.class.getClassLoader().getResourceAsStream("org/quartz/quartz.properties");
camel-schematron/src/main/java/org/apache/camel/component/schematron/processor/ClassPathURIResolver.java:                .getResourceAsStream(rulesDir.concat("/").concat(href));
camel-schematron/src/main/java/org/apache/camel/component/schematron/processor/TemplatesFactory.java:                InputStream xsl = this.getClass().getClassLoader().getResourceAsStream(path);
camel-xmlsecurity/src/main/java/org/apache/camel/component/xmlsecurity/api/XmlSignatureHelper.java:        return XmlSignatureHelper.class.getResourceAsStream(path);

Instead we should use ClassResolver API via CamelContext - This has the mehanism to load correctly in different runtimes - standalone, OSGi, spring boot, quarkus etc.

Issue Links

• is related to: CAMEL-17114 camel-jslt cannot load files from classpath in quarkus dev-mode
• relates to: CAMEL-17524 Camel loading of resources using ClassResolver API doesn't work in OSGi enviroments
• links to: GitHub Pull Request #6324