THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
Status
IMPROVING
Principle
- Minimize user operations for managing and monitoring topologies
- REST Service centralized metadata management
- Consistent UI experience
Objective
- Make sure consistent semantics between the term application (user space) and topology (physical space only)
- Topology configuration can be edited on UI
- Use REST Service as only entry to manage application (START/STOP) and ApplicationManager to schedule the task execution and update the execution information
- Eagle UI should support to manage/monitor the application on site/application page
- Single site/application may have more than one topologies (for example hdfsAuditLogMonitoring and userProfileMonitoring should have topologies running separately)
Architecture
To have a better user experience with EAGLE ui, we could provide an interface to manage a certain topology via the ui page, such as submit a topology
Schema
Topology Description Service
- Service name: TopologyDescriptionService
- Entity: TopologyDescriptionEntity
- Table name: eagle_metadata
- Prefix: topologyDescription
| Attribute | Type | Description | |
|---|---|---|---|
| tage | topology | String | topology name |
| fields | exeClass | String | topology entry class |
| type | String | topology type: DSL or CLASS | |
| description | String | description on this topology | |
| version | String | topology version |
Topology Execution Service
- Service name: TopologyExecutionService
- Entity: TopologyExecutionEntity
- Table name: eagle_metadata
- Prefix: topologyExecution
- Description: define the relation between an application and an topology, and maintain the execution status as well
| Attribute | Type | Description | |
|---|---|---|---|
| tags | site | String | topology site |
| application | String | ||
| topology | String | ||
| fields | fullName | String | topology execution name: eagle_${site}_${application}_${topology} |
| url | String | topology tracking url | |
| description | String | topology running status description | |
| status | String | application running status {NEW, STARTING, STOPPING, STARTED, STOPPED} | |
| mode | String | topology running mode: cluster or local | |
| environment | String | topology execution environment, e.g., storm | |
| lastModifiedDate | long | last status update time |
Topology Operation Service
- Service name: TopologyOperationService
- Entity: TopologyOperationEntity
- Table name: eagle_metadata
- Prefix: topologyOperation
| Attribute | Type | Description | |
|---|---|---|---|
| tags | operation | String | {START, STOP, STATUS} |
| site | String | ||
| application | String | ||
| operationID | String | ||
| topology | String | topology name: ${topology} | |
| fields | status | String | {INITIALIZED, PENDING, FAILED, SUCCESS} |
| message | String | exception message | |
| lastModifiedDate | long | last status update time |
Customized Restful Apis
| HTTP Method | URL | Payload | Description |
|---|---|---|---|
| POST | /app/operation | TopologyOperationEntity | create an topology operation |
| DELETE | /app/topology | ?topology={topologyName} | delete a topology description |