Java DatabaseDescriptor.getAllDataFileLocations方法代码示例

import org.apache.cassandra.config.DatabaseDescriptor; //导入方法依赖的package包/类
/**
 * Remove the snapshot with the given name from the given keyspaces.
 * If no tag is specified we will remove all snapshots.
 */
public void clearSnapshot(String tag, String... keyspaceNames) throws IOException
{
    if(tag == null)
        tag = "";

    Set<String> keyspaces = new HashSet<>();
    for (String dataDir : DatabaseDescriptor.getAllDataFileLocations())
    {
        for(String keyspaceDir : new File(dataDir).list())
        {
            // Only add a ks if it has been specified as a param, assuming params were actually provided.
            if (keyspaceNames.length > 0 && !Arrays.asList(keyspaceNames).contains(keyspaceDir))
                continue;
            keyspaces.add(keyspaceDir);
        }
    }

    for (String keyspace : keyspaces)
        Keyspace.clearSnapshot(tag, keyspace);

    if (logger.isDebugEnabled())
        logger.debug("Cleared out snapshot directories");
}
 

import org.apache.cassandra.config.DatabaseDescriptor; //导入方法依赖的package包/类
@Test
public void testRegularMode() throws ConfigurationException
{
    SchemaLoader.mkdirs();
    SchemaLoader.cleanup();
    StorageService.instance.initServer(0);
    for (String path : DatabaseDescriptor.getAllDataFileLocations())
    {
        // verify that storage directories are there.
        assertTrue(new File(path).exists());
    }
    // a proper test would be to call decommission here, but decommission() mixes both shutdown and datatransfer
    // calls.  This test is only interested in the shutdown-related items which a properly handled by just
    // stopping the client.
    //StorageService.instance.decommission();
    StorageService.instance.stopClient();
}
 

import org.apache.cassandra.config.DatabaseDescriptor; //导入方法依赖的package包/类
@Test
public void testRegularMode() throws IOException, InterruptedException, ConfigurationException
{
    SchemaLoader.mkdirs();
    SchemaLoader.cleanup();
    StorageService.instance.initServer(0);
    for (String path : DatabaseDescriptor.getAllDataFileLocations())
    {
        // verify that storage directories are there.
        assertTrue(new File(path).exists());
    }
    // a proper test would be to call decommission here, but decommission() mixes both shutdown and datatransfer
    // calls.  This test is only interested in the shutdown-related items which a properly handled by just
    // stopping the client.
    //StorageService.instance.decommission();
    StorageService.instance.stopClient();
}
 

import org.apache.cassandra.config.DatabaseDescriptor; //导入方法依赖的package包/类
public String[] getAllDataFileLocations()
{
    String[] locations = DatabaseDescriptor.getAllDataFileLocations();
    for (int i = 0; i < locations.length; i++)
        locations[i] = FileUtils.getCanonicalPath(locations[i]);
    return locations;
}
 

import org.apache.cassandra.config.DatabaseDescriptor; //导入方法依赖的package包/类
@Test
public void testClientOnlyMode() throws ConfigurationException
{
    SchemaLoader.mkdirs();
    SchemaLoader.cleanup();
    StorageService.instance.initClient(0);

    // verify that no storage directories were created.
    for (String path : DatabaseDescriptor.getAllDataFileLocations())
    {
        assertFalse(new File(path).exists());
    }
    StorageService.instance.stopClient();
}
 

import org.apache.cassandra.config.DatabaseDescriptor; //导入方法依赖的package包/类
@Test
public void testClientOnlyMode() throws IOException, ConfigurationException
{
    SchemaLoader.mkdirs();
    SchemaLoader.cleanup();
    StorageService.instance.initClient();

    // verify that no storage directories were created.
    for (String path : DatabaseDescriptor.getAllDataFileLocations())
    {
        assertFalse(new File(path).exists());
    }
    StorageService.instance.stopClient();
}
 

import org.apache.cassandra.config.DatabaseDescriptor; //导入方法依赖的package包/类
public static void cleanup()
{
    // clean up data directory which are stored as data directory/keyspace/data files
    for (String dirName : DatabaseDescriptor.getAllDataFileLocations())
    {
        File dir = new File(dirName);
        if (!dir.exists())
            continue;
        String[] children = dir.list();
        for (String child : children)
            FileUtils.deleteRecursive(new File(dir, child));
    }
}