content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You under the Apache License, Version 2.0
   * (the "License"); you may not use this file except in compliance with
   * the License.  You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package com.alibaba.compileflow.engine.common;
  
  /**
   * Defines standardized error codes for the CompileFlow framework.
   * Each code includes a unique identifier and a default message.
   *
   * @author yusu
   */
  public enum ErrorCode {
  
      // ========== Compilation Errors ==========
  
      /**
       * A general failure occurred during the process compilation phase.
       */
      CF_COMPILE_001("CF_COMPILE_001", "Process compilation failed"),
      /**
       * The embedded Java code within the process definition failed to compile.
       */
      CF_COMPILE_002("CF_COMPILE_002", "Java code compilation failed"),
      /**
       * The compiled process class could not be loaded into the JVM.
       */
      CF_COMPILE_003("CF_COMPILE_003", "Class loading failed"),
      /**
       * The compilation process exceeded the configured timeout.
       */
      CF_COMPILE_004("CF_COMPILE_004", "Compilation timeout"),
      /**
       * The system lacks sufficient resources (e.g., threads) to perform compilation.
       */
      CF_COMPILE_005("CF_COMPILE_005", "Insufficient compilation resources"),
  
      // ========== Execution Errors ==========
  
      /**
       * A general failure occurred during the execution of a process instance.
       */
      CF_EXEC_001("CF_EXEC_001", "Process execution failed"),
      /**
       * An error occurred while executing parallel branches within a process.
       */
      CF_EXEC_002("CF_EXEC_002", "Parallel branch execution failed"),
      /**
       * A script task (e.g., Groovy, Aviator) failed to execute.
       */
      CF_EXEC_003("CF_EXEC_003", "Script execution error"),
      /**
       * The execution of a process instance exceeded the configured timeout.
       */
      CF_EXEC_004("CF_EXEC_004", "Execution timeout"),
      /**
       * The executor's thread pool rejected the execution task, typically due to saturation.
       */
      CF_EXEC_005("CF_EXEC_005", "Thread pool rejected execution"),
      /**
       * Failed to create a new instance of the process.
       */
      CF_EXEC_006("CF_EXEC_006", "Process instance creation failed"),
      /**
       * The execution thread was interrupted.
       */
      CF_EXEC_007("CF_EXEC_007", "Operation interrupted"),
      /**
       * A validation check failed just before or during process execution.
       */
      CF_EXEC_008("CF_EXEC_008", "Process execution validation failed"),
  
      // ========== Configuration Errors ==========
  
      /**
       * A provided configuration parameter is invalid or out of range.
       */
      CF_CONFIG_001("CF_CONFIG_001", "Invalid configuration parameter"),
      /**
       * The executor (thread pool) configuration is invalid.
       */
      CF_CONFIG_002("CF_CONFIG_002", "Executor configuration error"),
      /**
       * A required component or service could not be configured or initialized.
       */
      CF_CONFIG_003("CF_CONFIG_003", "Component configuration error"),
      /**
       * An SPI extension point is misconfigured or its implementation is invalid.
       */
      CF_CONFIG_004("CF_CONFIG_004", "Extension point configuration error"),
      /**
       * The Service Provider for the process engine could not be found or loaded.
       */
      CF_CONFIG_005("CF_CONFIG_005", "Provider configuration error"),
  
      // ========== Resource Errors ==========
  
      /**
       * The requested process definition could not be found.
       */
      CF_RESOURCE_001("CF_RESOURCE_001", "Process definition not found"),
      /**
       * A failure occurred while loading a resource (e.g., a process file).
       */
      CF_RESOURCE_002("CF_RESOURCE_002", "Resource loading failed"),
      /**
       * An error occurred while accessing the file system.
       */
      CF_RESOURCE_003("CF_RESOURCE_003", "File system access failed"),
      /**
       * A required network resource is unavailable.
       */
      CF_RESOURCE_004("CF_RESOURCE_004", "Network resource unavailable"),
      /**
       * An operation on a cache (e.g., process cache) failed.
       */
      CF_RESOURCE_005("CF_RESOURCE_005", "Cache operation failed"),
  
      // ========== Validation Errors ==========
  
      /**
       * A method parameter or input argument failed a validation check.
       */
      CF_VALIDATION_001("CF_VALIDATION_001", "Parameter validation failed"),
      /**
       * The process definition file is malformed or does not conform to the schema (e.g., BPMN, TBBPM).
       */
      CF_VALIDATION_002("CF_VALIDATION_002", "Invalid process definition format"),
      /**
       * A business rule or constraint validation failed.
       */
      CF_VALIDATION_003("CF_VALIDATION_003", "Business rule validation failed"),
      /**
       * A referenced node, element, or variable could not be found within the process definition.
       */
      CF_VALIDATION_004("CF_VALIDATION_004", "Node or element not found"),
      /**
       * The process definition has a structural flaw (e.g., disconnected nodes, invalid loops).
       */
      CF_VALIDATION_005("CF_VALIDATION_005", "Process structure validation failed"),
  
      // ========== Reflection Errors ==========
  
      /**
       * An object could not be instantiated via reflection.
       */
      CF_REFLECTION_001("CF_REFLECTION_001", "Object instantiation failed");
  
      private final String code;
      private final String message;
  
      ErrorCode(String code, String message) {
          this.code = code;
          this.message = message;
      }
  
      /**
       * Looks up an {@code ErrorCode} by its string representation.
       *
       * @param code The string code (e.g., "CF_COMPILE_001").
       * @return The corresponding {@code ErrorCode}.
       * @throws IllegalArgumentException if the code is not found.
       */
      public static ErrorCode fromCode(String code) {
          for (ErrorCode errorCode : values()) {
              if (errorCode.code.equals(code)) {
                  return errorCode;
              }
          }
          throw new IllegalArgumentException("Unknown error code: " + code);
      }
  
      public String getCode() {
          return code;
      }
  
      public String getMessage() {
          return message;
      }
  
      @Override
      public String toString() {
          return String.format("%s: %s", code, message);
      }
  }
  