119 lines
3.5 KiB
Text
119 lines
3.5 KiB
Text
sequenceDiagram
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participant Source as Job Source
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participant Queue as Queue Manager
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participant Worker as Queue Worker
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participant Job as Job Handler
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participant Events as Event System
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participant DB as Database
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participant Failed as Failed Jobs
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participant Monitor as Queue Monitor
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%% Job Creation
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Source->>Queue: Dispatch Job
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activate Queue
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Note over Queue: Create Job Record
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%% Job Configuration
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alt Has Delay
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Queue->>Queue: Schedule for Later
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else No Delay
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Queue->>Queue: Available Immediately
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end
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%% Worker Pickup
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Queue->>Worker: Worker Picks Up Job
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activate Worker
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Note over Worker: Start Processing
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%% Job Processing
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Worker->>Job: Handle Job
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activate Job
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%% Database Transaction
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alt Has Database Operations
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Job->>DB: Begin Transaction
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activate DB
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Note over DB: Perform Operations
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DB-->>Job: Transaction Complete
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deactivate DB
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end
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%% Event Dispatching
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alt Has Events
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Job->>Events: Dispatch Events
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activate Events
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Note over Events: Process Events
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Events-->>Job: Events Handled
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deactivate Events
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end
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%% Job Completion Check
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alt Job Succeeds
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Job-->>Worker: Processing Complete
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Worker-->>Queue: Job Completed
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Queue->>Events: JobProcessed Event
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else Job Fails
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Job-->>Worker: Throws Exception
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%% Retry Logic
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alt Can Retry
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Worker->>Queue: Release Job
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Note over Queue: Increment Attempts
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Queue-->>Worker: Job Released
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else Max Retries Exceeded
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Worker->>Failed: Move to Failed Jobs
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activate Failed
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Note over Failed: Log Failure
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Failed-->>Worker: Failure Logged
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deactivate Failed
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end
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end
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deactivate Job
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deactivate Worker
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deactivate Queue
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%% Queue Monitoring
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Monitor->>Queue: Check Status
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activate Monitor
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Queue-->>Monitor: Queue Statistics
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Note over Monitor: Monitor Queue Health
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Monitor->>Failed: Check Failed Jobs
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Failed-->>Monitor: Failed Job Count
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Monitor->>Worker: Check Workers
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Worker-->>Monitor: Worker Status
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deactivate Monitor
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%% Style Definitions
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style Source fill:#f9f,stroke:#333,stroke-width:2px
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style Queue fill:#bbf,stroke:#333,stroke-width:2px
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style Worker fill:#bfb,stroke:#333,stroke-width:2px
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style Job fill:#bfb,stroke:#333,stroke-width:2px
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style Events fill:#fbb,stroke:#333,stroke-width:2px
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style DB fill:#fbb,stroke:#333,stroke-width:2px
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style Failed fill:#fbb,stroke:#333,stroke-width:2px
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style Monitor fill:#bbf,stroke:#333,stroke-width:2px
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%% Notes
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Note right of Source: Application Code
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Note right of Queue: Queue Management
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Note right of Worker: Job Processing
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Note right of Job: Business Logic
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Note right of Events: Event System
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Note right of DB: Data Layer
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Note right of Failed: Error Handling
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Note right of Monitor: Health Checks
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%% Job States
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Note over Queue: Job States:<br>1. Pending<br>2. Reserved<br>3. Released<br>4. Failed
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%% Processing Types
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Note over Worker: Processing:<br>1. Immediate<br>2. Delayed<br>3. Batched<br>4. Chained
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%% Retry Strategy
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Note over Failed: Retry Strategy:<br>1. Exponential Backoff<br>2. Max Attempts<br>3. Custom Delays
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%% Monitoring Aspects
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Note over Monitor: Monitoring:<br>1. Queue Size<br>2. Processing Rate<br>3. Error Rate<br>4. Worker Health
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