How to pass parameters to my client-web-panel plugin?

[Steven Cason]

I'm creating a plugin to decorate the commit overview page. The decorations will be links to an external Web app. The URLs will vary depending on the environment in which the plugin is running, e.g. dev, val, prd. So each Bitbucket server instance should be configurable to pass the correct URL to the plugin for the encvironment in which it runs.

Based on this, I think I need a server-side .properties file in the home dir, a server-side ContextProvider in Java calling ApplicationPropertiesService.getPluginProperty and returning the result in its getContextMap method, and a client-context-provider on the client side. But it's not working for me: Spring throws an NPE at the first reference to the local (@Inject-ed) ApplicationPropertiesService.

I realize the abovementioned article is about hooks, while I'm doing a plugin, and they're different. Maybe there is no ApplicationPropertiesService in the Spring context when processing a plugin?

Is there a canonical way to pass an environment-specific value to client-side plugin code?

atlassian-plugin.xml:

<atlassian-plugin key="${project.groupId}.${project.artifactId}" name="${project.name}" plugins-version="3">
    <plugin-info>
        <description>${project.description}</description>
        <version>${project.version}</version>
        <vendor name="${project.organization.name}" url="${project.organization.url}" />
        <permissions>
            <permission>execute_java</permission>
        </permissions>
    </plugin-info>

    <!-- add our i18n resource -->
    <resource type="i18n" name="i18n" location="v1-for-bitbucket-plugin"/>

    <client-resource key="commit-comment-overview-resources" name="Commit Overview Resources">
        <directory location="/css/" />
        <directory location="/js/" />
        <directory location="/soy/" />

        <dependency>com.atlassian.auiplugin:ajs</dependency>
        <dependency>com.atlassian.bitbucket.server.bitbucket-web-api:amd</dependency>
    </client-resource>
    
    <client-web-panel key="commit-comment-create-story-id" location="bitbucket.commit.related-entities">
     <context-provider class="gov.ssa.mde.v1_4_bb_plugin.PluginContextProvider"/>
        <client-context-provider>Bitbucket.commitcommentstory.ContextProvider</client-context-provider>
        <resource name="view" type="soy"
   location="gov.ssa.mde.v1-4-bb-plugin.versionone-for-bitbucket-plugin:commit-comment-overview-resources/com.bitbucket.commitcommentstory.commitForm" />
        <dependency>gov.ssa.mde.v1-4-bb-plugin.versionone-for-bitbucket-plugin:commit-comment-overview-resources</dependency>
    </client-web-panel>

</atlassian-plugin>

gov.ssa.mde.v1_4_bb_plugin.PluginContextProvider:
(NPE thrown at line 41)

package gov.ssa.mde.v1_4_bb_plugin;

import java.util.Map;

import javax.inject.Inject;

import com.atlassian.bitbucket.server.ApplicationPropertiesService;
import com.atlassian.plugin.PluginParseException;
import com.atlassian.plugin.web.ContextProvider;
import com.google.common.collect.ImmutableMap;

public class PluginContextProvider implements ContextProvider {

 @Inject
  public ApplicationPropertiesService appPropsSvc;
 
 public ApplicationPropertiesService getAppPropsSvc() {
  return appPropsSvc;
 }

 public void setAppPropsSvc(ApplicationPropertiesService appPropsSvc) {
  this.appPropsSvc = appPropsSvc;
 }

 private String baseUrlKey = "plugin.v1_4_bb_plugin.v1_base_url";
 private String missingUrlVal = "V1_base_url_missing!";
 private String baseUrl = null;
 private ImmutableMap<String, Object> newContext = null;
 
 public PluginContextProvider() {
 }

 @Override
 public Map<String, Object> getContextMap(Map<String, Object> arg0) {
  System.out.println(this.getClass().getName() + ".getContextMap invoked.");

  // Seems BB isn't calling the init method, so I'm placing its code here til I figure out the problem.
  this.baseUrl = appPropsSvc.getPluginProperty(baseUrlKey, missingUrlVal);
  System.out.println(this.getClass().getName() + ".getContextMap got base url:" + this.baseUrl + ".");
  this.newContext = ImmutableMap.<String, Object>builder()
                   .put(baseUrlKey, this.baseUrl)
                   .build();
  System.out.println(this.getClass().getName() + ".getContextMap built newContext:" + this.newContext + ".");

  System.out.println(this.getClass().getName() + ".getContextMap returning " + this.newContext.toString());
  return this.newContext;
 }

 @Override
 public void init(Map<String, String> arg0) throws PluginParseException {
  System.out.println(this.getClass().getName() + ".init invoked.");
  this.baseUrl = appPropsSvc.getPluginProperty(baseUrlKey, missingUrlVal);
  this.newContext = ImmutableMap.<String, Object>builder()
                   .put(baseUrlKey, baseUrl)
                   .build();
  System.out.println(this.getClass().getName() + ".init initialized newContext = " + this.newContext.toString());
 }

}