Examples with JanusGraphConfigurationException org.janusgraph.core.JanusGraphConfigurationException used on opensource projects

Example 1 with JanusGraphConfigurationException

use of org.janusgraph.core.JanusGraphConfigurationException in project janusgraph by JanusGraph.

the class JanusGraphTest method testManagedOptionMasking.

@Test
public void testManagedOptionMasking() throws BackendException {
    // Can't use clopen(...) for this test, because it's aware local vs global option types and
    // uses ManagementSystem where necessary.  We want to simulate an erroneous attempt to
    // override global options by tweaking the local config file (ignoring ManagementSystem),
    // so we have to bypass clopen(...).
    // clopen(
    // option(ALLOW_STALE_CONFIG), false,
    // option(ATTRIBUTE_ALLOW_ALL_SERIALIZABLE), false);
    // Check this test's assumptions about option default values
    Duration customCommitTime = Duration.ofMillis(456L);
    Preconditions.checkState(ALLOW_STALE_CONFIG.getDefaultValue());
    Preconditions.checkState(ALLOW_STALE_CONFIG.getType().equals(ConfigOption.Type.MASKABLE));
    Preconditions.checkState(!customCommitTime.equals(MAX_COMMIT_TIME.getDefaultValue()));
    // Disallow managed option masking and verify exception at graph startup
    close();
    WriteConfiguration wc = getConfiguration();
    wc.set(ConfigElement.getPath(ALLOW_STALE_CONFIG), false);
    wc.set(ConfigElement.getPath(MAX_COMMIT_TIME), customCommitTime);
    try {
        graph = (StandardJanusGraph) JanusGraphFactory.open(wc);
        fail("Masking managed config options should be disabled in this configuration");
    } catch (JanusGraphConfigurationException e) {
        // Exception should cite the problematic setting's full name
        assertTrue(e.getMessage().contains(ConfigElement.getPath(MAX_COMMIT_TIME)));
    }
    // Allow managed option masking (default config again) and check that the local value is ignored and
    // that no exception is thrown
    close();
    wc = getConfiguration();
    wc.set(ConfigElement.getPath(ALLOW_STALE_CONFIG), true);
    wc.set(ConfigElement.getPath(MAX_COMMIT_TIME), customCommitTime);
    graph = (StandardJanusGraph) JanusGraphFactory.open(wc);
    // Local value should be overridden by the default that already exists in the backend
    assertEquals(MAX_COMMIT_TIME.getDefaultValue(), graph.getConfiguration().getMaxCommitTime());
    // Wipe the storage backend
    graph.getBackend().clearStorage();
    try {
        graph.close();
    } catch (Throwable t) {
        log.debug("Swallowing throwable during shutdown after clearing backend storage", t);
    }
    // Bootstrap a new DB with managed option masking disabled
    wc = getConfiguration();
    wc.set(ConfigElement.getPath(ALLOW_STALE_CONFIG), false);
    graph = (StandardJanusGraph) JanusGraphFactory.open(wc);
    close();
    // Check for expected exception
    wc = getConfiguration();
    wc.set(ConfigElement.getPath(MAX_COMMIT_TIME), customCommitTime);
    try {
        graph = (StandardJanusGraph) JanusGraphFactory.open(wc);
        fail("Masking managed config options should be disabled in this configuration");
    } catch (JanusGraphConfigurationException e) {
        // Exception should cite the problematic setting's full name
        assertTrue(e.getMessage().contains(ConfigElement.getPath(MAX_COMMIT_TIME)));
    }
    // Now check that ALLOW_STALE_CONFIG is actually MASKABLE -- enable it in the local config
    wc = getConfiguration();
    wc.set(ConfigElement.getPath(ALLOW_STALE_CONFIG), true);
    wc.set(ConfigElement.getPath(MAX_COMMIT_TIME), customCommitTime);
    graph = (StandardJanusGraph) JanusGraphFactory.open(wc);
    // Local value should be overridden by the default that already exists in the backend
    assertEquals(MAX_COMMIT_TIME.getDefaultValue(), graph.getConfiguration().getMaxCommitTime());
}