jerrypeng commented on a change in pull request #4174: [go function] support
localrun and cluster mode for go function
URL: https://github.com/apache/pulsar/pull/4174#discussion_r279907488
##########
File path:
pulsar-functions/runtime/src/main/java/org/apache/pulsar/functions/runtime/RuntimeUtils.java
##########
@@ -89,31 +91,180 @@
if (StringUtils.isNotEmpty(extraDependenciesDir)) {
args.add("PYTHONPATH=${PYTHONPATH}:" + extraDependenciesDir);
}
+ } else if (instanceConfig.getFunctionDetails().getRuntime() ==
Function.FunctionDetails.Runtime.GO) {
+ //no-op
}
return args;
}
+ /**
+ *
+ * Different from python and java function, Go function uploads a complete
executable file(including:
+ * instance file + user code file). Its parameter list is provided to the
broker in the form of a yaml file,
+ * the advantage of this approach is that backward compatibility is
guaranteed.
Review comment:
> It becomes easier to add fields to a yaml file, because ignoring new
(unknown) fields in yaml is much easier.
I not a GO expert but is there not a flag for the arg parsers in GO to
ignore unknown fields?
The downside to passing in a file is that you have to clean it up somehow.
Even temporary files need to be cleaned up or they will start to pile up. Also
this creates difficulties for container based runtimes like K8s. How shall we
pass the file to a container? While its not impossible it does add
complications.
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