jhuckaby/Cronicle

Features

• Distributed Task Schedulers - Runs scheduled tasks across a cluster of servers with automatic failover and load distribution.
• Distributed Job Schedulers with Web UI - A multi-server task scheduler that runs scheduled jobs across a cluster with automatic failover and a browser-based management interface.
• Web-Based Job Management - Provides a browser-based interface for real-time job monitoring, event configuration, and system dashboards.
• Cron Scheduling - Parses standard crontab expressions into its own scheduling system with custom day-of-week and day-of-month intersection rules.
• Custom Cron Parsers - Implements a custom cron parser that intersects day-of-month and day-of-week constraints when both are specified.
• Cluster Job Schedulers - Distributes job execution across worker servers with automatic failover to backup servers.
• Cluster Server Managements - Provides a UI to view server status, add servers, and organize them into groups.
• Crash Recovery Strategies - Fails and retries jobs from dead workers or primary servers after crashes.
• Event Schedule Browsers - Lists all scheduled events with timing, category, and plugin details, and provides actions to run, edit, or view history.
• Per-Event Cursor Schedulers - Implements per-event cursor scheduling that advances each event's clock independently for catch-up and rewinding.
• Scheduled Event Creators - Provides a REST API endpoint to create new scheduled events with timing, plugin, and target parameters.
• Scheduled Event Deleters - Provides a REST API endpoint to delete scheduled events, preventing removal while jobs are running.
• Scheduled Event Listers - Provides a REST API endpoint to fetch paginated lists of scheduled events with full details.
• Plugin-Based Job Executions - Executes any command-line executable as a job using a JSON messaging protocol over STDIN/STDOUT.
• Plugin-Based Job Executors - Provides a plugin framework that runs command-line scripts in any language as scheduled jobs.
• Job Completion Signaling - Sends JSON completion status with exit code via STDOUT to signal success or failure to the scheduler.
• Queue and Job State Inspections - Provides live statistics, progress donut charts, and a streaming log for a running or completed job.
• Job Cancellation - Provides an API endpoint to terminate a running job by its ID, stopping its process immediately.
• Job Monitoring Dashboards - Provides a web dashboard for watching running jobs with live logs, resource usage, and progress updates.
• Job Target Assignments - Assigns events to specific servers or groups using random, round-robin, or least-CPU algorithms.
• On-Demand Job Launchers - Provides a REST API endpoint to immediately start a job for an event, overriding its schedule.
• Recurring Job Scheduling - Defines recurring jobs with a visual multi-selector for years, months, days, hours, and minutes.
• Cluster Failover Managers - Implements automatic primary election and failover to backup servers for distributing jobs across a cluster.
• Multi-Server Job Distribution Managers - Organizes servers into groups, distributes jobs across workers, and handles automatic primary election and failover.
• Web-Based Cron Management - Replaces traditional cron with a browser interface for scheduling, monitoring, and managing recurring tasks.
• Automatic Primary Elections - Elects a backup server as primary when the current primary shuts down or crashes.
• API Key Authentications - Requires a 32-character hexadecimal API key to authorize every REST API call.
• Scheduler Management Interfaces - Provides a browser-based interface for managing events, users, categories, and server groups.
• Scheduled Event Modifiers - Provides a REST API endpoint to modify any property of a stored scheduled event.
• Job Management APIs - Provides a REST API for starting, stopping, and managing scheduled jobs with API key authentication.
• Global Job Concurrency Limits - Sets a global maximum number of jobs that can run simultaneously across all servers.
• Per-Job Resource Limits - Monitors and aborts jobs exceeding configurable CPU, memory, and log size limits.
• Scheduled Event Detail Retrievers - Provides a REST API endpoint to retrieve full configuration of a specific scheduled event.
• Real-Time Monitoring Dashboards - Delivers live job monitoring with streaming logs, resource usage charts, and system status through a web dashboard.
• Status Dashboards - Displays general stats, currently active jobs, and upcoming events in the next 24 hours on the home tab.
• Plugin Executable Registrations - Registers executable commands with custom parameters and advanced options for running jobs as plugins.
• Embedded Web Servers - Embeds an HTTP/HTTPS server that serves the management UI and handles server-to-server communication.
• Job Status Monitoring - Provides an API endpoint to query detailed status, progress, and resource usage of a specific job.
• Daemon-Resilient Job Processes - Spawns jobs as detached background processes that survive scheduler daemon restarts.
• Job Performance Metrics - Ships a plugin interface that outputs named timing categories displayed as pie charts on job detail pages.
• Job Completion Chaining - Automatically triggers subsequent events when a job completes, with separate chains for success and failure.
• S3-Compatible Cloud Storage - Persists job data and configuration to local disk, Couchbase, or any S3-compatible service with pluggable engine support.
• Job Data Persistence - Provides an S3-compatible storage backend for persisting all job scheduling data and logs.
• Job Data Persistence - Provides an S3 storage backend for persisting all job scheduling data and logs.
• Job Data Persistence - Provides a Couchbase storage backend for persisting all job scheduling data and logs.
• Job Data Persistence - Provides a local filesystem storage backend for persisting all job scheduling data and logs.
• Pluggable Storage Backends - Supports pluggable storage backends including local disk, Couchbase, and S3-compatible services for persisting all data.
• Configurable Storage Backends - Selects between local disk, Couchbase, or Amazon S3 for storing scheduling data and job logs.
• Request Chaining - Ships a request chaining mechanism that passes response data from one HTTP request into subsequent requests.
• Shell Script Execution Engines - Executes shell scripts as jobs, determining success or failure from the script's exit code.
• Job History Logs - Provides a paginated API to retrieve completed job history across all events, sorted by recency.
• Event-Scoped Job History Retrievers - Provides a REST API endpoint to retrieve paginated job history for a specific scheduled event.
• Timezone-Aware Schedulers - Supports scheduling jobs across multiple timezones for distributed teams and global infrastructure.
• Cursor-Based Event Timers - Advances each event's internal clock independently, enabling catch-up on missed jobs and manual schedule rewinding.
• JSON Protocol Plugin Executables - Creates command-line programs in any language that communicate job details and results via JSON over STDIN/STDOUT.
• Automatic Retry Mechanisms - Automatically retries failed jobs up to 32 times with configurable delay between attempts.
• Missed Job Recovery Schedulers - Queues and runs every scheduled job missed due to concurrency, server unavailability, or crashes until all are completed.
• Per-Job Progress Reporting - Reports progress values from plugins to update visual meters and estimate remaining time for running jobs.
• Multi-Server Simultaneous Executions - Launches jobs simultaneously on every server in a targeted group with optional stagger delay.
• Job Event Notifications - Sends email notifications to custom recipients when jobs succeed or fail.
• Web Hook Notifications - Posts JSON payloads to custom URLs at job start and completion with full job details.
• Job Timeout Enforcements - Enforces configurable maximum run times for jobs, automatically aborting and logging failures when exceeded.
• Lost Worker Job Handlers - Aborts jobs on disconnected worker servers after a timeout and optionally retries them.
• On-Demand Job Executions - Starts jobs immediately from the schedule tab, bypassing event timing settings and active status.
• Plugin UI Parameter Definitions - Defines custom UI controls per plugin that users fill in when editing scheduled events.
• Worker Scaling - Adds worker-only servers that execute assigned jobs without scheduling duties.
• Worker Server Additions - Ships a mechanism to add worker-only servers that execute assigned jobs without scheduling duties.
• Shared Secret Keys - Authenticates internal server-to-server API requests using a shared secret key.
• API Key Management - Creates, edits, enables, disables, and deletes API keys with configurable privileges.
• User Account Management - Creates, edits, enables, disables, and deletes user accounts with configurable privileges.
• Running Job Modifiers - Provides a REST API endpoint to modify timeout, retries, and resource limits of a running job.
• Per-Event Concurrency Limits - Sets maximum simultaneous jobs per event, queuing or logging errors when the limit is reached.
• Server Grouping - Creates groups of servers by hostname pattern matching for targeted job execution and primary eligibility.
• Job Target Server Selectors - Selects individual servers or server groups for job execution with configurable selection algorithms.
• Active Job Listings - Provides a REST API endpoint to retrieve status and progress of all currently running jobs.
• Log Size Limits - Aborts a job when its log file exceeds a configurable byte limit.
• Resource Monitoring - Monitors and enforces per-job limits on memory, CPU, and log file size, aborting jobs that exceed thresholds.
• Event Performance Statistics Inspectors - Shows performance graphs and averages for elapsed time, CPU, memory, and success rate for the last 50 jobs of an event.
• Memory Consumption Limits - Aborts a job when its total memory consumption exceeds a configurable threshold.
• Email Alert Notifications - Sends job-related email alerts by setting SMTP server details and a sender address in the configuration file.
• CPU Usage Limiters - Aborts a job when its total CPU usage exceeds a configurable percentage of one core.
• Scheduler State Inspection - Provides an API endpoint to query whether the global scheduler is currently enabled or disabled.
• Scheduler State Togglers - Provides a REST API endpoint to enable or disable the global scheduler, controlling all event processing.
• Web Hook Notifications - Sends HTTP POST notifications to external URLs at job start and completion.
• HTTP Client Requests - Provides a built-in HTTP client for making GET, HEAD, and POST requests with custom headers and timeouts.
• Scheduling - Distributed task scheduler with a web-based interface.
• Workflow Scheduling - Distributed, easy-to-install task scheduler.
• Workflow Scheduling - Distributed, easy-to-install task scheduler based on Node.js.
• Node.js - Listed in the “Node.js 项目” section of the Great Open Source Project awesome list.

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