Examples with Writer org.opensearch.gateway.PersistedClusterStateService.Writer used on opensource projects

Example 16 with Writer

use of org.opensearch.gateway.PersistedClusterStateService.Writer in project OpenSearch by opensearch-project.

the class PersistedClusterStateServiceTests method testPersistsAndReloadsTerm.

public void testPersistsAndReloadsTerm() throws IOException {
    try (NodeEnvironment nodeEnvironment = newNodeEnvironment(createDataPaths())) {
        final PersistedClusterStateService persistedClusterStateService = newPersistedClusterStateService(nodeEnvironment);
        final long newTerm = randomNonNegativeLong();
        assertThat(persistedClusterStateService.loadBestOnDiskState().currentTerm, equalTo(0L));
        try (Writer writer = persistedClusterStateService.createWriter()) {
            writer.writeFullStateAndCommit(newTerm, ClusterState.EMPTY_STATE);
            assertThat(persistedClusterStateService.loadBestOnDiskState().currentTerm, equalTo(newTerm));
        }
        assertThat(persistedClusterStateService.loadBestOnDiskState().currentTerm, equalTo(newTerm));
    }
}