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  1. init-container

    Init containers are exactly like regular containers, except:
        -  Init containers always run to completion.
        -  Each init container must complete successfully before the next one starts.

    Since our application container would not be running the before the init-container so we cant invoke any endpoint to create a resource and we dont want to go with DB related script(SQL) to create a resource (insert a row in the database) so I am not exploring this further for this use case.

  2. k8s hooks



  3. Events in Spring

    We can use the ApplicationReadyEvent which is published when the application is ready to service requests.
    We can listen to this event , which is thrown by the SpringApplication itself and then execute some code (which is creating a dataspace in our scenario)

    Example

    Code Block
    languagejava
    titleApplicationReadyEvent
    @EventListener(ApplicationReadyEvent.class)
        public void initializeNcmp() {
            log.info("Initializing NCMP when the ApplicationReadyEvent is received");
            try {
                cpsAdminService.createDataspace("NCMP-CmHandle-Operational-Data");
            } catch (final AlreadyDefinedException ex) {
                log.info("Already defined : {} ", ex.getMessage());
            } catch (final Exception ex) {
                log.warn("Failed to create dataspace, cause : {}", ex.getMessage());
            }
        }


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