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Chapter 8. Cartridge Events
OpenShift Enterprise provides a publish and subscribe system that enables a cartridge to act when a developer adds or removes another cartridge in an application.
The
Publishes and Subscribes elements in the $cartridge_name/metadata/manifest.yml file detail support for cartridge events.
8.1. Cartridge Event Publishing 링크 복사링크가 클립보드에 복사되었습니다!
링크 복사링크가 클립보드에 복사되었습니다!
When OpenShift Enterprise adds a cartridge to an application, it uses entries in the
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Publishes section of the $cartridge_name/metadata/manifest.yml file to construct events sent to other cartridges in the application. Define publish events in the manifest.yml file using the following format:
Publishes:
<event_name>:
Type: "<event type>"
Publishes:
<event_name>:
Type: "<event type>"
Example 8.1. PHP Cartridge Publishes Entry
For each
Publishes entry, OpenShift Enterprise runs a script named $cartridge_name/hooks/$event_name.
OpenShift Enterprise joins lines of output that the
hooks/$event_name script writes to stdout with single spaces, then inputs the result to subscriber scripts in other cartridges that match the Type of the publish event. The input to matching subscriber scripts is prefaced with hooks/<event_name> <gear_name> <namespace> <gear_uuid>.