[Help] Can't instantiate plugin extensions

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Bpin
Created

I am developing 2 plugins, 1 plugin is exposing extensionPoints, the other plugin is making extensions.

In myPlugin:

<extensionPoints>
  <extensionPoint name="pdlCompletionBase" beanClass="com.linkedin.intellij.pegasusplugin.completion.PdlAnnotationCompletionBase">
    <with attribute="implementationClass" implements="com.linkedin.intellij.pegasusplugin.completion.PdlAnnotationCompletionBase"/>
  </extensionPoint>
</extensionPoints>

Where the `PdlAnnotationCompletionBase` is 

public abstract class PdlAnnotationCompletionBase extends LazyExtensionInstance {
  @Attribute("key")
  public String key;

  @Attribute("implementationClass")
  public String implementationClass;

  public String getKey() {
    return key;
  }

}

Also where we get extension name:

public class PdlCompletionContributor extends CompletionContributor {
  private static final ExtensionPointName<PdlAnnotationCompletionBase> EP_NAME =
      ExtensionPointName.create("com.linkedin.pegasus-intellij-plugin.pegasusplugin.pdlCompletionBase");

  public PdlCompletionContributor() {
    useExtensions();
  }

  public void useExtensions() {
    try {
      for (PdlAnnotationCompletionBase extension: EP_NAME.getExtensionList(project)) {
        // .....
      }
    } catch (Exception e) {
      PluginManager.getLogger().error("Enumerate extension failed", e);
    }
  }
}

The error message:

2020-12-22 18:21:49,526 [  41058]  ERROR - nsions.impl.ExtensionPointImpl - IntelliJ IDEA 2020.3  Build #IU-203.5981.155
2020-12-22 18:21:49,526 [  41058]  ERROR - nsions.impl.ExtensionPointImpl - JDK: 11.0.9; VM: OpenJDK 64-Bit Server VM; Vendor: JetBrains s.r.o.
2020-12-22 18:21:49,526 [  41058]  ERROR - nsions.impl.ExtensionPointImpl - OS: Mac OS X
2020-12-22 18:21:49,527 [  41059]  ERROR - nsions.impl.ExtensionPointImpl - Plugin to blame: annotation version: 0.0.2
2020-12-22 18:21:49,527 [  41059]  ERROR - nsions.impl.ExtensionPointImpl - Last Action: EditorLeft

Exception

2020-12-22 18:21:49,525 [  41057]  ERROR - nsions.impl.ExtensionPointImpl - Cannot create class com.linkedin.intellij.pegasusplugin.completion.PdlAnnotationCompletionBase [Plugin: com.linkedin.pdl-plugin-extension-example.annotation]
    com.intellij.diagnostic.PluginException: Cannot create class com.linkedin.intellij.pegasusplugin.completion.PdlAnnotationCompletionBase [Plugin: com.linkedin.pdl-plugin-extension-example.annotation]
    at com.intellij.serviceContainer.ComponentManagerImpl.instantiateClass(ComponentManagerImpl.kt:725)
    at com.intellij.openapi.extensions.impl.ExtensionComponentAdapter.instantiateClass(ExtensionComponentAdapter.java:51)
    at com.intellij.openapi.extensions.impl.ExtensionComponentAdapter.createInstance(ExtensionComponentAdapter.java:43)
    at com.intellij.openapi.extensions.impl.XmlExtensionAdapter.createInstance(XmlExtensionAdapter.java:69)
    at com.intellij.openapi.extensions.impl.ExtensionPointImpl.processAdapter(ExtensionPointImpl.java:501)
    at com.intellij.openapi.extensions.impl.ExtensionPointImpl.processAdapters(ExtensionPointImpl.java:435)
    at com.intellij.openapi.extensions.impl.ExtensionPointImpl.calcExtensionList(ExtensionPointImpl.java:246)
    at com.intellij.openapi.extensions.impl.ExtensionPointImpl.getExtensionList(ExtensionPointImpl.java:240)
    at com.intellij.openapi.extensions.ExtensionPointName.getExtensionList(ExtensionPointName.java:42)
    at com.linkedin.intellij.pegasusplugin.completion.PdlCompletionContributor.useExtensions(PdlCompletionContributor.java:41)
    at com.linkedin.intellij.pegasusplugin.completion.PdlCompletionContributor.<init>(PdlCompletionContributor.java:36)

 

For thoroughness, the another plugin is

<extensions defaultExtensionNs="com.linkedin.pegasus-intellij-plugin.pegasusplugin">
  <pdlCompletionBase key="entityRelationship" implementationClass="com.linkedin.intellij.annotation.SimpleCompletion"/>
</extensions>

 

And the extension class is

public class SimpleCompletion extends PdlAnnotationCompletionBase {
  @java.lang.Override
  public void init() {
    
  }

  @java.lang.Override
  public java.lang.String getAnnotationKeyName() {
    return null;
  }

  @java.lang.Override
  public java.lang.String getFieldTypeBasedFormat(FieldType fieldType) {
    return null;
  }

  @java.lang.Override
  public void getCompletions(CompletionParameters completionParameters, ProcessingContext processingContext,
      CompletionResultSet completionResultSet) {

  }

  @java.lang.Override
  public java.lang.String insertCompletion(java.lang.String s) {
    return null;
  }
}

Hope I can get some help. Thank you

 

 

 

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3 comments
Avatar
Jakub Chrzanowski
Created

Bpin, did you set proper dependencies in Gradle configuration/pugin.xml files within the second B?

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Avatar
Bpin
Created

Jakub, My second plugin's gradle file looks like

apply plugin: 'li-intellij-plugin'

intellij.plugins = ['gradle-java', 'java', 'com.linkedin.pegasus-intellij-plugin.pegasusplugin:0.1.38']

jacoco {
  // Required for Java 11 support
  toolVersion = "0.8.5"
}

And my plugin.xml looks like this:

<idea-plugin version="2">
  <description>
      annotation plugin for the IntelliJ IDE platform.
  </description>

  <change-notes>
  </change-notes>

  <!--
    This is needed in order to use Java-related functionality.
    See: https://blog.jetbrains.com/platform/2019/06/java-functionality-extracted-as-a-plugin/
  -->
  <depends>com.intellij.modules.java</depends>
  <depends>com.linkedin.pegasus-intellij-plugin.pegasusplugin</depends>

  <extensions defaultExtensionNs="com.linkedin.pegasus-intellij-plugin.pegasusplugin">
    <pdlCompletionBase key="entityRelationship" implementationClass="com.linkedin.intellij.annotation.SimpleCompletion"/>
    <pdlCompletionInterface implementation="com.linkedin.intellij.annotation.SimplePdlCompletions"/>
  </extensions>

  <application-components>
    <!-- Add your application components here -->
  </application-components>

  <project-components>
    <!-- Add your project components here -->
  </project-components>

  <actions>
    <!-- Add your actions here -->
  </actions>
</idea-plugin>

With the depends tag

<depends>com.linkedin.pegasus-intellij-plugin.pegasusplugin</depends>

I think I have set it ok?

Without setting it correctly will it happen to have exception like I saw?

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Avatar
Yann Cebron
Created

In your EP declaration,

- beanClass should specify POJO class holding all attributes to configure extension point instance (declared via multiple declarations in any plugin.xml)

- whereas attribute "implementationClass" holding FQN of actual EP implementation should specify the Interface that must be implemented by the EP implementation (NOT the same as POJO).

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