Add an option to skip operation examples

modules/openapi-generator-cli/src/main/java/org/openapitools/codegen/cmd/Generate.java

@@ -217,6 +217,10 @@ public class Generate extends OpenApiGeneratorCommand {
             description = CodegenConstants.REMOVE_OPERATION_ID_PREFIX_DESC)
     private Boolean removeOperationIdPrefix;
 
+    @Option(name = {"--skip-operation-example"}, title = "skip examples defined in the operation",
+            description = CodegenConstants.SKIP_OPERATION_EXAMPLE_DESC)
+    private Boolean skipOperationExample;
+
     @Option(name = {"--skip-validate-spec"},
             title = "skip spec validation",
             description = "Skips the default behavior of validating an input specification.")
@@ -393,6 +397,10 @@ public void execute() {
             configurator.setRemoveOperationIdPrefix(removeOperationIdPrefix);
         }
 
+        if (skipOperationExample != null) {
+            configurator.setSkipOperationExample(skipOperationExample);
+        }
+
         if (enablePostProcessFile != null) {
             configurator.setEnablePostProcessFile(enablePostProcessFile);
         }

modules/openapi-generator-core/src/main/java/org/openapitools/codegen/config/WorkflowSettings.java

@@ -42,6 +42,7 @@ public class WorkflowSettings {
     public static final boolean DEFAULT_VERBOSE = false;
     public static final boolean DEFAULT_SKIP_OVERWRITE = false;
     public static final boolean DEFAULT_REMOVE_OPERATION_ID_PREFIX = false;
+    public static final boolean DEFAULT_SKIP_OPERATION_EXAMPLE = false;
     public static final boolean DEFAULT_LOG_TO_STDERR = false;
     public static final boolean DEFAULT_VALIDATE_SPEC = true;
     public static final boolean DEFAULT_ENABLE_POST_PROCESS_FILE = false;
@@ -56,6 +57,7 @@ public class WorkflowSettings {
     private boolean verbose = DEFAULT_VERBOSE;
     private boolean skipOverwrite = DEFAULT_SKIP_OVERWRITE;
     private boolean removeOperationIdPrefix = DEFAULT_REMOVE_OPERATION_ID_PREFIX;
+    private boolean skipOperationExample = DEFAULT_SKIP_OPERATION_EXAMPLE;
     private boolean logToStderr = DEFAULT_LOG_TO_STDERR;
     private boolean validateSpec = DEFAULT_VALIDATE_SPEC;
     private boolean enablePostProcessFile = DEFAULT_ENABLE_POST_PROCESS_FILE;
@@ -104,6 +106,7 @@ public static Builder newBuilder(WorkflowSettings copy) {
         builder.verbose = copy.isVerbose();
         builder.skipOverwrite = copy.isSkipOverwrite();
         builder.removeOperationIdPrefix = copy.isRemoveOperationIdPrefix();
+        builder.skipOperationExample = copy.isSkipOperationExample();
         builder.logToStderr = copy.isLogToStderr();
         builder.validateSpec = copy.isValidateSpec();
         builder.enablePostProcessFile = copy.isEnablePostProcessFile();
@@ -169,6 +172,15 @@ public boolean isRemoveOperationIdPrefix() {
         return removeOperationIdPrefix;
     }
 
+    /**
+     * Indicates whether or not to skip examples defined in the operation.
+     *
+     * @return <code>true</code> if the examples defined in the operation should be skipped.
+     */
+    public boolean isSkipOperationExample() {
+        return skipOperationExample;
+    }
+
     /**
      * Indicates whether or not the generator's executor will write all log messages (not just errors) to STDOUT. Useful for
      * piping the JSON output of debug options (e.g. <code>-DdebugOperations</code>) to an external parser directly while testing a generator.
@@ -284,6 +296,7 @@ public static final class Builder {
         private Boolean verbose = DEFAULT_VERBOSE;
         private Boolean skipOverwrite = DEFAULT_SKIP_OVERWRITE;
         private Boolean removeOperationIdPrefix = DEFAULT_REMOVE_OPERATION_ID_PREFIX;
+        private Boolean skipOperationExample = DEFAULT_SKIP_OPERATION_EXAMPLE;
         private Boolean logToStderr = DEFAULT_LOG_TO_STDERR;
         private Boolean validateSpec = DEFAULT_VALIDATE_SPEC;
         private Boolean enablePostProcessFile = DEFAULT_ENABLE_POST_PROCESS_FILE;
@@ -362,6 +375,17 @@ public Builder withRemoveOperationIdPrefix(Boolean removeOperationIdPrefix) {
             return this;
         }
 
+        /**
+         * Sets the {@code skipOperationExample} and returns a reference to this Builder so that the methods can be chained together.
+         *
+         * @param skipOperationExample the {@code skipOperationExample} to set
+         * @return a reference to this Builder
+         */
+        public Builder withSkipOperationExample(Boolean skipOperationExample) {
+            this.skipOperationExample = skipOperationExample != null ? skipOperationExample : Boolean.valueOf(DEFAULT_REMOVE_OPERATION_ID_PREFIX);
+            return this;
+        }
+
         /**
          * Sets the {@code logToStderr} and returns a reference to this Builder so that the methods can be chained together.
          *
@@ -568,6 +592,7 @@ public boolean equals(Object o) {
         return isVerbose() == that.isVerbose() &&
                 isSkipOverwrite() == that.isSkipOverwrite() &&
                 isRemoveOperationIdPrefix() == that.isRemoveOperationIdPrefix() &&
+                isSkipOperationExample() == that.isSkipOperationExample() &&
                 isLogToStderr() == that.isLogToStderr() &&
                 isValidateSpec() == that.isValidateSpec() &&
                 isEnablePostProcessFile() == that.isEnablePostProcessFile() &&
@@ -590,6 +615,7 @@ public int hashCode() {
                 isVerbose(),
                 isSkipOverwrite(),
                 isRemoveOperationIdPrefix(),
+                isSkipOperationExample(),
                 isLogToStderr(),
                 isValidateSpec(),
                 isGenerateAliasAsModel(),

modules/openapi-generator-gradle-plugin/README.adoc

@@ -294,6 +294,11 @@ apply plugin: 'org.openapi.generator'
 |false
 |Remove prefix of operationId, e.g. config_getId => getId.
 
+|skipOperationExample
+|Boolean
+|false
+|Skip examples defined in the operation
+
 |apiFilesConstrainedTo
 |List(String)
 |None

modules/openapi-generator-gradle-plugin/src/main/kotlin/org/openapitools/generator/gradle/plugin/OpenApiGeneratorPlugin.kt

@@ -125,6 +125,7 @@ class OpenApiGeneratorPlugin : Plugin<Project> {
                     reservedWordsMappings.set(generate.reservedWordsMappings)
                     ignoreFileOverride.set(generate.ignoreFileOverride)
                     removeOperationIdPrefix.set(generate.removeOperationIdPrefix)
+                    skipOperationExample.set(generate.skipOperationExample)
                     apiFilesConstrainedTo.set(generate.apiFilesConstrainedTo)
                     modelFilesConstrainedTo.set(generate.modelFilesConstrainedTo)
                     supportingFilesConstrainedTo.set(generate.supportingFilesConstrainedTo)

modules/openapi-generator-gradle-plugin/src/main/kotlin/org/openapitools/generator/gradle/plugin/extensions/OpenApiGeneratorGenerateExtension.kt

@@ -201,6 +201,11 @@ open class OpenApiGeneratorGenerateExtension(project: Project) {
      */
     val removeOperationIdPrefix = project.objects.property<Boolean?>()
 
+    /**
+     * Skip examples defined in the operation
+     */
+    val skipOperationExample = project.objects.property<Boolean?>()
+
     /**
      * Defines which API-related files should be generated. This allows you to create a subset of generated files (or none at all).
      *
@@ -333,4 +338,4 @@ open class OpenApiGeneratorGenerateExtension(project: Project) {
         skipValidateSpec.set(false)
         generateAliasAsModel.set(false)
     }
-}
+}

modules/openapi-generator-gradle-plugin/src/main/kotlin/org/openapitools/generator/gradle/plugin/tasks/GenerateTask.kt

@@ -304,6 +304,13 @@ open class GenerateTask : DefaultTask() {
     @Input
     val removeOperationIdPrefix = project.objects.property<Boolean?>()
 
+    /**
+     * Remove examples defined in the operation
+     */
+    @Optional
+    @Input
+    val skipOperationExample = project.objects.property<Boolean?>()
+
     /**
      * Defines which API-related files should be generated. This allows you to create a subset of generated files (or none at all).
      *
@@ -615,6 +622,10 @@ open class GenerateTask : DefaultTask() {
                 configurator.setRemoveOperationIdPrefix(value!!)
             }
 
+            skipOperationExample.ifNotEmpty { value ->
+                configurator.setSkipOperationExample(value!!)
+            }
+
             logToStderr.ifNotEmpty { value ->
                 configurator.setLogToStderr(value)
             }

modules/openapi-generator-maven-plugin/README.md

@@ -70,6 +70,7 @@ mvn clean compile
 | `ignoreFileOverride` |  `openapi.generator.maven.plugin.ignoreFileOverride` | specifies the full path to a `.openapi-generator-ignore` used for pattern based overrides of generated outputs
 | `httpUserAgent` | `openapi.generator.maven.plugin.httpUserAgent` | Sets custom User-Agent header value
 | `removeOperationIdPrefix` |  `openapi.generator.maven.plugin.removeOperationIdPrefix` | remove operationId prefix (e.g. user_getName => getName)
+| `skipOperationExample` |  `openapi.generator.maven.plugin.skipOperationExample` | skip examples defined in the operation
 | `logToStderr` |  `openapi.generator.maven.plugin.logToStderr` | write all log messages (not just errors) to STDOUT
 | `enablePostProcessFile` |  `openapi.generator.maven.plugin.` | enable file post-processing hook
 | `skipValidateSpec` |  `openapi.generator.maven.plugin.skipValidateSpec` | Whether or not to skip validating the input spec prior to generation. By default, invalid specifications will result in an error.

modules/openapi-generator-maven-plugin/src/main/java/org/openapitools/codegen/plugin/CodeGenMojo.java

@@ -237,6 +237,12 @@ public class CodeGenMojo extends AbstractMojo {
     @Parameter(name = "removeOperationIdPrefix", property = "openapi.generator.maven.plugin.removeOperationIdPrefix")
     private Boolean removeOperationIdPrefix;
 
+    /**
+     * To skip examples defined in the operation
+     */
+    @Parameter(name = "skipOperationExample", property = "openapi.generator.maven.plugin.skipOperationExample")
+    private Boolean skipOperationExample;
+
     /**
      * To write all log messages (not just errors) to STDOUT
      */
@@ -485,6 +491,10 @@ public void execute() throws MojoExecutionException {
                 configurator.setRemoveOperationIdPrefix(removeOperationIdPrefix);
             }
 
+            if (skipOperationExample != null) {
+                configurator.setSkipOperationExample(skipOperationExample);
+            }
+
             if (isNotEmpty(inputSpec)) {
                 configurator.setInputSpec(inputSpec);
             }
@@ -888,4 +898,4 @@ private void adjustAdditionalProperties(final CodegenConfig config) {
             }
         }
     }
-}
+}

modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenConfig.java

@@ -214,6 +214,10 @@ public interface CodegenConfig {
 
     void setRemoveOperationIdPrefix(boolean removeOperationIdPrefix);
 
+    boolean isSkipOperationExample();
+
+    void setSkipOperationExample(boolean skipOperationExample);
+
     public boolean isHideGenerationTimestamp();
 
     public void setHideGenerationTimestamp(boolean hideGenerationTimestamp);

modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenConstants.java

@@ -309,6 +309,9 @@ public static enum ENUM_PROPERTY_NAMING_TYPE {camelCase, PascalCase, snake_case,
     public static final String REMOVE_OPERATION_ID_PREFIX = "removeOperationIdPrefix";
     public static final String REMOVE_OPERATION_ID_PREFIX_DESC = "Remove prefix of operationId, e.g. config_getId => getId";
 
+    public static final String SKIP_OPERATION_EXAMPLE = "skipOperationExample";
+    public static final String SKIP_OPERATION_EXAMPLE_DESC = "Skip examples defined in operations to avoid out of memory errors.";
+
     public static final String STRIP_PACKAGE_NAME = "stripPackageName";
     public static final String STRIP_PACKAGE_NAME_DESC = "Whether to strip leading dot-separated packages from generated model classes";
 

modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultCodegen.java

@@ -177,6 +177,7 @@ apiTemplateFiles are for API outputs only (controllers/handlers).
     protected List<CliOption> cliOptions = new ArrayList<CliOption>();
     protected boolean skipOverwrite;
     protected boolean removeOperationIdPrefix;
+    protected boolean skipOperationExample;
 
     /**
      * True if the code generator supports multiple class inheritance.
@@ -318,6 +319,11 @@ public void processOpts() {
                     .get(CodegenConstants.REMOVE_OPERATION_ID_PREFIX).toString()));
         }
 
+        if (additionalProperties.containsKey(CodegenConstants.SKIP_OPERATION_EXAMPLE)) {
+            this.setSkipOperationExample(Boolean.valueOf(additionalProperties
+                    .get(CodegenConstants.SKIP_OPERATION_EXAMPLE).toString()));
+        }
+
         if (additionalProperties.containsKey(CodegenConstants.DOCEXTENSION)) {
             this.setDocExtension(String.valueOf(additionalProperties
                     .get(CodegenConstants.DOCEXTENSION).toString()));
@@ -3547,14 +3553,18 @@ protected void handleMethodResponse(Operation operation,
                 }
             }
 
-            // generate examples
-            String exampleStatusCode = "200";
-            for (String key : operation.getResponses().keySet()) {
-                if (operation.getResponses().get(key) == methodResponse && !key.equals("default")) {
-                    exampleStatusCode = key;
+            // check skipOperationExample, which can be set to true to avoid out of memory errors for large spec
+            if (!isSkipOperationExample()) {
+                // generate examples
+                String exampleStatusCode = "200";
+                for (String key : operation.getResponses().keySet()) {
+                    if (operation.getResponses().get(key) == methodResponse && !key.equals("default")) {
+                        exampleStatusCode = key;
+                    }
                 }
+                op.examples = new ExampleGenerator(schemas, this.openAPI).generateFromResponseSchema(exampleStatusCode, responseSchema, getProducesInfo(this.openAPI, operation));
             }
-            op.examples = new ExampleGenerator(schemas, this.openAPI).generateFromResponseSchema(exampleStatusCode, responseSchema, getProducesInfo(this.openAPI, operation));
+
             op.defaultResponse = toDefaultValue(responseSchema);
             op.returnType = cm.dataType;
             op.returnFormat = cm.dataFormat;
@@ -4954,10 +4964,18 @@ public boolean isRemoveOperationIdPrefix() {
         return removeOperationIdPrefix;
     }
 
+    public boolean isSkipOperationExample() {
+        return skipOperationExample;
+    }
+
     public void setRemoveOperationIdPrefix(boolean removeOperationIdPrefix) {
         this.removeOperationIdPrefix = removeOperationIdPrefix;
     }
 
+    public void setSkipOperationExample(boolean skipOperationExample) {
+        this.skipOperationExample = skipOperationExample;
+    }
+
     public boolean isHideGenerationTimestamp() {
         return hideGenerationTimestamp;
     }

modules/openapi-generator/src/main/java/org/openapitools/codegen/config/CodegenConfigurator.java

@@ -429,6 +429,11 @@ public CodegenConfigurator setRemoveOperationIdPrefix(boolean removeOperationIdP
         return this;
     }
 
+    public CodegenConfigurator setSkipOperationExample(boolean skipOperationExample) {
+        workflowSettingsBuilder.withSkipOperationExample(skipOperationExample);
+        return this;
+    }
+
     public CodegenConfigurator setSkipOverwrite(boolean skipOverwrite) {
         workflowSettingsBuilder.withSkipOverwrite(skipOverwrite);
         return this;
@@ -583,6 +588,7 @@ public ClientOptInput toClientOptInput() {
         config.setSkipOverwrite(workflowSettings.isSkipOverwrite());
         config.setIgnoreFilePathOverride(workflowSettings.getIgnoreFileOverride());
         config.setRemoveOperationIdPrefix(workflowSettings.isRemoveOperationIdPrefix());
+        config.setSkipOperationExample(workflowSettings.isSkipOperationExample());
         config.setEnablePostProcessFile(workflowSettings.isEnablePostProcessFile());
         config.setEnableMinimalUpdate(workflowSettings.isEnableMinimalUpdate());
         config.setStrictSpecBehavior(workflowSettings.isStrictSpecBehavior());