fix: convert the memory value to decimal format

[tpiperatgod]

Signed-off-by: laminar tpiperatgod@gmail.com

(If this PR fixes a github issue, please add Fixes #<xyz>.)

Fixes #375

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Master Issue: #

Motivation

Java commands require memory values in resource.DecimalSI format.

Modifications

Convert memory values passed into the MakeJavaFunctionCommand function to decimal format

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[tpiperatgod]

An example is as follows:

This is the configuration file for a Function, and I set its spec.resources.requests.memory value to 500Mi, which is a binary format units.

apiVersion: compute.functionmesh.io/v1alpha1
kind: Function
metadata:
  name: function-sample
  namespace: default
spec:
  image: streamnative/pulsar-functions-java-sample:2.10.0.4
  className: org.apache.pulsar.functions.api.examples.ExclamationFunction
  forwardSourceMessageProperty: true
  maxPendingAsyncRequests: 1000
  replicas: 1
  maxReplicas: 5
  logTopic: persistent://public/default/logging-function-logs
  input:
    topics:
    - persistent://public/default/input-java-topic
    typeClassName: java.lang.String
  output:
    topic: persistent://public/default/output-java-topic
    typeClassName: java.lang.String
  resources:
    requests:
      cpu: "0.1"
      memory: 500Mi

In the pod corresponding to the Function, we can see that it has been converted to a decimal format value -Xmx524288k.

spec:
  containers:
  - command:
    - sh
    - -c
    - SHARD_ID=${POD_NAME##*-} && echo shardId=${SHARD_ID} && exec java -cp /pulsar/instances/java-instance.jar
      -Dpulsar.functions.instance.classpath=/pulsar/lib/* -Dlog4j.configurationFile=kubernetes_instance_log4j2.xml
      -Dpulsar.function.log.dir=logs/functions -Dpulsar.function.log.file=function-sample-${SHARD_ID}
      -Xmx524288k