Examples with ArangoHost com.arangodb.ArangoHost used on opensource projects

Example 1 with ArangoHost

use of com.arangodb.ArangoHost in project YCSB by brianfrankcooper.

the class ArangoDBClient method init.

/**
   * Initialize any state for this DB. Called once per DB instance; there is
   * one DB instance per client thread.
   * 
   * Actually, one client process will share one DB instance here.(Coincide to
   * mongoDB driver)
   */
@Override
public void init() throws DBException {
    INIT_COUNT.incrementAndGet();
    synchronized (ArangoDBClient.class) {
        if (arangoDriver != null) {
            return;
        }
        Properties props = getProperties();
        // Set the DB address
        String ip = props.getProperty("arangodb.ip", "localhost");
        String portStr = props.getProperty("arangodb.port", "8529");
        int port = Integer.parseInt(portStr);
        // If clear db before run
        String dropDBBeforeRunStr = props.getProperty("arangodb.dropDBBeforeRun", "false");
        dropDBBeforeRun = Boolean.parseBoolean(dropDBBeforeRunStr);
        // Set the sync mode
        String waitForSyncStr = props.getProperty("arangodb.waitForSync", "false");
        waitForSync = Boolean.parseBoolean(waitForSyncStr);
        // Set if transaction for update
        String transactionUpdateStr = props.getProperty("arangodb.transactionUpdate", "false");
        transactionUpdate = Boolean.parseBoolean(transactionUpdateStr);
        // Init ArangoDB connection
        try {
            ArangoConfigure arangoConfigure = new ArangoConfigure();
            arangoConfigure.setArangoHost(new ArangoHost(ip, port));
            arangoConfigure.init();
            arangoDriver = new ArangoDriver(arangoConfigure);
        } catch (Exception e) {
            logger.error("Failed to initialize ArangoDB", e);
            System.exit(-1);
        }
        // Init the database
        if (dropDBBeforeRun) {
            // Try delete first
            try {
                arangoDriver.deleteDatabase(databaseName);
            } catch (ArangoException e) {
                if (e.getErrorNumber() != ErrorNums.ERROR_ARANGO_DATABASE_NOT_FOUND) {
                    logger.error("Failed to delete database: {} with ex: {}", databaseName, e.toString());
                    System.exit(-1);
                } else {
                    logger.info("Fail to delete DB, already deleted: {}", databaseName);
                }
            }
        }
        try {
            arangoDriver.createDatabase(databaseName);
            logger.info("Database created: " + databaseName);
        } catch (ArangoException e) {
            if (e.getErrorNumber() != ErrorNums.ERROR_ARANGO_DUPLICATE_NAME) {
                logger.error("Failed to create database: {} with ex: {}", databaseName, e.toString());
                System.exit(-1);
            } else {
                logger.info("DB already exists: {}", databaseName);
            }
        }
        // Always set the default db
        arangoDriver.setDefaultDatabase(databaseName);
        logger.info("ArangoDB client connection created to {}:{}", ip, port);
        // Log the configuration
        logger.info("Arango Configuration: dropDBBeforeRun: {}; address: {}:{}; databaseName: {};" + " waitForSync: {}; transactionUpdate: {};", dropDBBeforeRun, ip, port, databaseName, waitForSync, transactionUpdate);
    }
}