private static Configuration readConfigurationFromDisk ( final String configPath , final ConfigurationSerializer serializer ) { LOG . log ( Level . FINER , "Loading configuration file: {0}" , configPath ) ; final File evaluatorConfigFile = new File ( configPath ) ; if ( ! evaluatorConfigFile . exists ( ) ) { throw fatal ( "Configuration file " + configPath + " does not exist. Can be an issue in job submission." , new FileNotFoundException ( configPath ) ) ; } if ( ! evaluatorConfigFile . canRead ( ) ) { throw fatal ( "Configuration file " + configPath + " exists, but can't be read." , new IOException ( configPath ) ) ; } try { final Configuration config = serializer . fromFile ( evaluatorConfigFile ) ; LOG . log ( Level . FINEST , "Configuration file loaded: {0}" , configPath ) ; return config ; } catch ( final IOException e ) { throw fatal ( "Unable to parse the configuration file: " + configPath , e ) ; } }
Read configuration from a given file and deserialize it into Tang configuration object that can be used for injection . Configuration is currently serialized using Avro . This method also prints full deserialized configuration into log .