Examples with AsyncMetadataVersionManager voldemort.client.scheduler.AsyncMetadataVersionManager used on opensource projects

Example 6 with AsyncMetadataVersionManager

use of voldemort.client.scheduler.AsyncMetadataVersionManager in project voldemort by voldemort.

the class AsyncMetadataVersionManagerTest method testStoreDefinitionChangeTracker.

/*
     * Validates that the AsyncMetadataVersionManager correctly identifies the
     * store specific version update. This is done by initializing the base
     * metadata version (for a particular store), starting the
     * AsyncMetadataVersionManager and then updating the version to a new value.
     * For the test to succeed the callback has to be invoked correctly by the
     * asynchronous manager.
     */
@Test(timeout = 60000)
public void testStoreDefinitionChangeTracker() {
    String storeVersionKey = "users";
    Callable<Void> rebootstrapCallback = new Callable<Void>() {

        public Void call() throws Exception {
            callbackForStoreChange();
            return null;
        }
    };
    try {
        // Write a base version of 100
        Properties versionProps = MetadataVersionStoreUtils.getProperties(this.sysVersionStore);
        versionProps.setProperty(storeVersionKey, Long.toString(100));
        MetadataVersionStoreUtils.setProperties(this.sysVersionStore, versionProps);
        // Giving enough time to complete the above put.
        Thread.sleep(500);
        // Starting the Version Metadata Manager
        this.asyncCheckMetadata = new AsyncMetadataVersionManager(this.repository, rebootstrapCallback, storeVersionKey);
        scheduler.schedule(asyncCheckMetadata.getClass().getName(), asyncCheckMetadata, new Date(), 500);
        // Wait until the Version Manager is active
        while (!asyncCheckMetadata.isActive) {
            Thread.sleep(500);
        }
        // Updating the version metadata here for the Version Metadata
        // Manager to detect
        this.newVersion = 101;
        System.err.println("Incrementing the version for : " + storeVersionKey);
        versionProps.setProperty(storeVersionKey, Long.toString(this.newVersion));
        MetadataVersionStoreUtils.setProperties(this.sysVersionStore, versionProps);
        while (!callbackDone) {
            Thread.sleep(2000);
        }
        assertEquals(false, (this.updatedStoreVersion == 0));
        assertEquals(this.updatedStoreVersion, this.newVersion);
    } catch (Exception e) {
        e.printStackTrace();
        fail("Failed to start the Metadata Version Manager : " + e.getMessage());
    }
}