Configuration and Utilities

/**
 * Strategies for handling job execution blocking
 * Determines behavior when job is triggered while already running
 */
public enum ExecutorBlockStrategyEnum {
    
    /**
     * Serial execution - wait for current job to finish before starting new one
     */
    SERIAL_EXECUTION("Serial execution"),
    
    /**
     * Discard later - ignore new trigger if job is already running
     */
    DISCARD_LATER("Discard Later"),
    
    /**
     * Cover early - stop current job and start new one
     */
    COVER_EARLY("Cover Early");
    
    /**
     * Get human-readable title for the strategy
     * @return Strategy description
     */
    public String getTitle();
    
    /**
     * Match strategy by name with fallback
     * @param name Strategy name to match
     * @param defaultItem Default strategy if no match found
     * @return Matched strategy or default
     */
    public static ExecutorBlockStrategyEnum match(String name, ExecutorBlockStrategyEnum defaultItem);
}

// Configure job with specific blocking strategy
@XxlJob("serialJob")
public void serialJobHandler() throws Exception {
    // This job will use SERIAL_EXECUTION by default
    // Configure via admin interface for other strategies
    
    XxlJobHelper.log("Job started - will block concurrent executions");
    
    // Long-running job logic
    Thread.sleep(30000); // 30 seconds
    
    XxlJobHelper.handleSuccess();
}

// Check blocking strategy programmatically
public void checkBlockingStrategy(String strategyName) {
    ExecutorBlockStrategyEnum strategy = ExecutorBlockStrategyEnum.match(
        strategyName, 
        ExecutorBlockStrategyEnum.SERIAL_EXECUTION
    );
    
    System.out.println("Using strategy: " + strategy.getTitle());
}

/**
 * Supported script types for glue-based dynamic job execution
 * Allows runtime job definition without redeployment
 */
public enum GlueTypeEnum {
    
    /**
     * Java bean method (default)
     */
    BEAN("BEAN", false, null, null),
    
    /**
     * Embedded Java/Groovy code (not external script)
     */
    GLUE_GROOVY("GLUE(Java)", false, null, null),
    
    /**
     * Shell script
     */
    GLUE_SHELL("GLUE(Shell)", true, "bash", ".sh"),
    
    /**
     * Python script
     */
    GLUE_PYTHON("GLUE(Python)", true, "python", ".py"),
    
    /**
     * PHP script
     */
    GLUE_PHP("GLUE(PHP)", true, "php", ".php"),
    
    /**
     * Node.js script
     */
    GLUE_NODEJS("GLUE(Nodejs)", true, "node", ".js"),
    
    /**
     * PowerShell script
     */
    GLUE_POWERSHELL("GLUE(PowerShell)", true, "powershell", ".ps1");
    
    /**
     * Get human-readable description
     * @return Script type description
     */
    public String getDesc();
    
    /**
     * Check if this is a script type (vs bean type)
     * @return true if script type, false for bean
     */
    public boolean isScript();
    
    /**
     * Get command prefix for script execution
     * @return Command to execute script or null for bean
     */
    public String getCmd();
    
    /**
     * Get file extension for script type
     * @return File extension or null for bean
     */
    public String getSuffix();
    
    /**
     * Match glue type by name
     * @param name Glue type name to match
     * @return Matched glue type or null if not found
     */
    public static GlueTypeEnum match(String name);
}

// Check glue type capabilities
public void analyzeGlueType(String glueTypeName) {
    GlueTypeEnum glueType = GlueTypeEnum.match(glueTypeName);
    
    if (glueType != null) {
        System.out.println("Type: " + glueType.getDesc());
        System.out.println("Is Script: " + glueType.isScript());
        
        if (glueType.isScript()) {
            System.out.println("Command: " + glueType.getCmd());
            System.out.println("File Extension: " + glueType.getSuffix());
        }
    }
}

// Example script content handling
public void prepareScriptExecution(GlueTypeEnum glueType, String scriptContent) {
    if (glueType.isScript()) {
        String filename = "job_script" + glueType.getSuffix();
        String command = glueType.getCmd() + " " + filename;
        
        // Write script to file and execute
        writeScriptFile(filename, scriptContent);
        executeCommand(command);
    }
}

/**
 * Registry configuration constants and types
 * Defines timeouts and registry types for executor-admin communication
 */
public class RegistryConfig {
    
    /**
     * Heartbeat timeout in seconds
     * Time between heartbeat signals from executor to admin
     */
    public static final int BEAT_TIMEOUT = 30;
    
    /**
     * Dead timeout in seconds (3 times heartbeat timeout)
     * Time after which executor is considered dead if no heartbeat received
     */
    public static final int DEAD_TIMEOUT = BEAT_TIMEOUT * 3;
    
    /**
     * Registry types for different components
     */
    public enum RegistType {
        /**
         * Executor registration type
         */
        EXECUTOR,
        
        /**
         * Admin server registration type
         */
        ADMIN
    }
}

// Configure heartbeat monitoring
public class HeartbeatMonitor {
    
    public void startMonitoring() {
        int heartbeatInterval = RegistryConfig.BEAT_TIMEOUT * 1000; // Convert to milliseconds
        int deadThreshold = RegistryConfig.DEAD_TIMEOUT * 1000;
        
        ScheduledExecutorService scheduler = Executors.newScheduledThreadPool(1);
        
        // Send heartbeat every BEAT_TIMEOUT seconds
        scheduler.scheduleAtFixedRate(() -> {
            sendHeartbeat();
        }, 0, heartbeatInterval, TimeUnit.MILLISECONDS);
        
        // Check for dead executors every DEAD_TIMEOUT seconds
        scheduler.scheduleAtFixedRate(() -> {
            checkDeadExecutors(deadThreshold);
        }, deadThreshold, deadThreshold, TimeUnit.MILLISECONDS);
    }
}

// Registry type usage
public void registerComponent(RegistryConfig.RegistType type, String key, String value) {
    RegistryParam param = new RegistryParam(type.name(), key, value);
    
    switch (type) {
        case EXECUTOR:
            System.out.println("Registering executor: " + key + " -> " + value);
            break;
        case ADMIN:
            System.out.println("Registering admin: " + key + " -> " + value);
            break;
    }
}

/**
 * Factory for creating glue job handlers
 * Manages dynamic script compilation and execution
 */
public class GlueFactory {
    
    /**
     * Create glue job handler for given glue type and source
     * @param glueType Glue type (BEAN, GLUE_GROOVY for embedded code, or script types like Shell, Python, etc.)
     * @param glueSource Glue source code
     * @return IJobHandler instance for glue execution
     */
    public static IJobHandler getInstance(GlueTypeEnum glueType, String glueSource);
    
    /**
     * Refresh glue job handler cache
     * Forces recompilation of script handlers
     */
    public static void refreshInstance();
}

/**
 * File-based logging utilities for job execution
 * Handles log file creation, rotation, and cleanup
 */
public class XxlJobFileAppender {
    
    /**
     * Initialize log path for job logging
     * @param logPath Base directory for log files
     */
    public static void initLogPath(String logPath);
    
    /**
     * Get current log base path
     * @return Base directory for log files
     */
    public static String getLogPath();
    
    /**
     * Get glue source code storage path
     * @return Directory for storing glue scripts
     */
    public static String getGlueSrcPath();
    
    /**
     * Generate log filename for specific job execution
     * @param triggerDate Job trigger date
     * @param logId Unique log identifier
     * @return Generated log filename
     */
    public static String makeLogFileName(Date triggerDate, long logId);
    
    /**
     * Append log content to job log file
     * @param logFileName Target log file name
     * @param appendLog Content to append
     */
    public static void appendLog(String logFileName, String appendLog);
    
    /**
     * Read log content from specific line number
     * @param logFileName Log file to read
     * @param fromLineNum Starting line number (1-based)
     * @return LogResult containing log content and metadata
     */
    public static LogResult readLog(String logFileName, int fromLineNum);
    
    /**
     * Read all lines from log file
     * @param logFile Log file to read
     * @return Complete file content as string
     */
    public static String readLines(File logFile);
}

// Initialize logging system
XxlJobFileAppender.initLogPath("/var/log/xxl-job");

// Generate log filename
Date now = new Date();
long logId = 123456L;
String logFileName = XxlJobFileAppender.makeLogFileName(now, logId);

// Append to log
XxlJobFileAppender.appendLog(logFileName, "Job started at " + now);
XxlJobFileAppender.appendLog(logFileName, "Processing data...");

// Read log content
LogResult logResult = XxlJobFileAppender.readLog(logFileName, 1);
System.out.println("Log content: " + logResult.getLogContent());

/**
 * Date utility functions for job scheduling
 */
public class DateUtil {
    // Standard date formatting and parsing utilities
    // Implementation varies - check source for specific methods
}

/**
 * File operation utilities
 */
public class FileUtil {
    // File I/O operations, directory management
    // Implementation varies - check source for specific methods
}

/**
 * JSON processing utilities using Gson
 */
public class GsonTool {
    // JSON serialization and deserialization methods
    // Implementation varies - check source for specific methods
}

/**
 * Network IP address utilities
 */
public class IpUtil {
    // IP address detection and validation methods
    // Implementation varies - check source for specific methods
}

/**
 * Network communication utilities
 */
public class NetUtil {
    // HTTP client operations, network connectivity checks
    // Implementation varies - check source for specific methods
}

/**
 * Script execution utilities for glue jobs
 */
public class ScriptUtil {
    // Script execution, process management
    // Implementation varies - check source for specific methods
}

/**
 * Exception handling and stack trace utilities
 */
public class ThrowableUtil {
    // Stack trace processing, exception formatting
    // Implementation varies - check source for specific methods
}

/**
 * Remote communication utilities for RPC operations
 */
public class XxlJobRemotingUtil {
    // HTTP-based RPC communication, request/response handling
    // Implementation varies - check source for specific methods
}

// Recommended production timeouts
public class ProductionConfig {
    
    // Heartbeat configuration
    public static final int PRODUCTION_BEAT_TIMEOUT = 30; // seconds
    public static final int PRODUCTION_DEAD_TIMEOUT = 90; // 3x heartbeat
    
    // Log retention
    public static final int PRODUCTION_LOG_RETENTION_DAYS = 7;
    
    // Job execution timeouts
    public static final int DEFAULT_JOB_TIMEOUT = 300; // 5 minutes
    public static final int LONG_RUNNING_JOB_TIMEOUT = 3600; // 1 hour
    
    // Blocking strategies by job type
    public static final ExecutorBlockStrategyEnum CRITICAL_JOB_STRATEGY = 
        ExecutorBlockStrategyEnum.SERIAL_EXECUTION;
    public static final ExecutorBlockStrategyEnum BATCH_JOB_STRATEGY = 
        ExecutorBlockStrategyEnum.DISCARD_LATER;
    public static final ExecutorBlockStrategyEnum REAL_TIME_JOB_STRATEGY = 
        ExecutorBlockStrategyEnum.COVER_EARLY;
}

@Configuration
public class EnvironmentJobConfig {
    
    @Value("${environment:development}")
    private String environment;
    
    @Bean
    public ExecutorBlockStrategyEnum defaultBlockingStrategy() {
        switch (environment.toLowerCase()) {
            case "production":
                return ExecutorBlockStrategyEnum.SERIAL_EXECUTION;
            case "staging":
                return ExecutorBlockStrategyEnum.DISCARD_LATER;
            case "development":
            default:
                return ExecutorBlockStrategyEnum.COVER_EARLY;
        }
    }
    
    @Bean
    public int logRetentionDays() {
        switch (environment.toLowerCase()) {
            case "production":
                return 30;
            case "staging":
                return 7;
            case "development":
            default:
                return 3;
        }
    }
}

public class GlueScriptManager {
    
    public void deployScript(String jobHandler, GlueTypeEnum glueType, String scriptContent) {
        // Validate script type
        if (!glueType.isScript()) {
            throw new IllegalArgumentException("Only script types allowed");
        }
        
        // Create script file
        String filename = jobHandler + glueType.getSuffix();
        String scriptPath = XxlJobFileAppender.getGlueSrcPath() + "/" + filename;
        
        try {
            // Write script to file
            Files.write(Paths.get(scriptPath), scriptContent.getBytes());
            
            // Set executable permissions for shell scripts
            if (glueType == GlueTypeEnum.GLUE_SHELL) {
                File scriptFile = new File(scriptPath);
                scriptFile.setExecutable(true);
            }
            
            // Refresh glue factory to pick up changes
            GlueFactory.refreshInstance();
            
            System.out.println("Script deployed: " + filename);
            
        } catch (IOException e) {
            throw new RuntimeException("Failed to deploy script: " + e.getMessage(), e);
        }
    }
    
    public void validateScript(GlueTypeEnum glueType, String scriptContent) {
        switch (glueType) {
            case GLUE_GROOVY:
                // GLUE_GROOVY is embedded Java/Groovy code, not an external script
                validateGroovyCode(scriptContent);
                break;
            case GLUE_SHELL:
                validateShellScript(scriptContent);
                break;
            case GLUE_PYTHON:
                validatePythonScript(scriptContent);
                break;
            default:
                // Basic syntax check for other types
                if (scriptContent == null || scriptContent.trim().isEmpty()) {
                    throw new IllegalArgumentException("Script content cannot be empty");
                }
        }
    }
}