How to access (get) camel header in java dsl
The log in the DSL uses the simple language: http://camel.apache.org/simple.
So you need to do it like this:
.log(LoggingLevel.INFO, "Successfully indexed document id [${header." + BatchHeaders.DOCUMENT_ID + "}]")
e.g. the ${header.xxx}
is evaluated at runtime by the simple language.
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Rishi
I m a Software Engineer who enjoy the system design, tools & service development in Java & Python, I also spend my time programming small scale web apps in Ruby (Sinatra)... its fun! I've worked in Search, Web Analytic, Experimentation (A/B Testing) domain for last few of years with some great people and now I am working in DevOps domain - Infrastructure Tools & Automation. I m really excited to be a part of Stackoverflow ! Gr8 chance to interact with awesome folks all over the world!! So much to learn !!
Updated on September 16, 2022Comments
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Rishi over 1 year
I have a code like -
// use streaming to increase index throughput .setHeader(SolrConstants.OPERATION, constant(SolrConstants.OPERATION_INSERT_STREAMING)) // define solr endpoint and options .to("solr://" + getSolrEndPoint() + "?defaultMaxConnectionsPerHost=500&streamingThreadCount=500&maxRetries=3") .log(LoggingLevel.INFO, "Successfully indexed document id [" +header(BatchHeaders.DOCUMENT_ID) +"]") // end this route .end();
But what I m getting in the log is -
severity="INFO " thread="Camel (camel-1) thread #123 - seda://insert" category="route2" Successfully indexed document id [header{DOC_ID}]
I m not getting the actual header value (the document id).
So my question is - How to access the headers in Java DSL here? -
Abhishek Chatterjee almost 4 yearsWhat if my header field is a string that is actually a bean-name in Spring context and I want invoke that bean as processor?
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Gerold Broser over 3 yearsI'm going even further than @AbhishekChatterjee: How to get a reference of a bean object which is assigned to a header to invoke one of its methods?