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Add micro and nano timestamp precision (#285)
* add micro and nano precision
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94 changes: 94 additions & 0 deletions
94
server/src/main/java/org/apache/iotdb/db/conf/IoTDBConfigCheck.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,94 @@ | ||
| /** | ||
| * Licensed to the Apache Software Foundation (ASF) under one | ||
| * or more contributor license agreements. See the NOTICE file | ||
| * distributed with this work for additional information | ||
| * regarding copyright ownership. The ASF licenses this file | ||
| * to you under the Apache License, Version 2.0 (the | ||
| * "License"); you may not use this file except in compliance | ||
| * with the License. You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, | ||
| * software distributed under the License is distributed on an | ||
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | ||
| * KIND, either express or implied. See the License for the | ||
| * specific language governing permissions and limitations | ||
| * under the License. | ||
| */ | ||
| package org.apache.iotdb.db.conf; | ||
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| import java.io.File; | ||
| import java.io.FileInputStream; | ||
| import java.io.FileOutputStream; | ||
| import java.io.IOException; | ||
| import java.io.InputStreamReader; | ||
| import java.util.Properties; | ||
| import org.apache.iotdb.tsfile.common.conf.TSFileConfig; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
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| public class IoTDBConfigCheck { | ||
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| // this file is located in data/system/schema/system_properties. | ||
| // If user delete folder "data", system_properties can reset. | ||
| public static final String PROPERTIES_FILE_NAME = "system.properties"; | ||
| public static final String SCHEMA_DIR = | ||
| IoTDBDescriptor.getInstance().getConfig().getSchemaDir(); | ||
| private static final IoTDBConfigCheck INSTANCE = new IoTDBConfigCheck(); | ||
| private static final Logger logger = LoggerFactory.getLogger(IoTDBDescriptor.class); | ||
| private Properties properties = new Properties(); | ||
| // this is a initial parameter. | ||
| private static String TIMESTAMP_PRECISION = "ms"; | ||
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| public static final IoTDBConfigCheck getInstance() { | ||
| return IoTDBConfigCheck.INSTANCE; | ||
| } | ||
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| public void checkConfig() { | ||
| TIMESTAMP_PRECISION = IoTDBDescriptor.getInstance().getConfig().getTimestampPrecision(); | ||
| createDir(SCHEMA_DIR); | ||
| checkFile(SCHEMA_DIR); | ||
| logger.info("System configuration is ok."); | ||
| } | ||
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| public void createDir(String filepath) { | ||
| File dir = new File(filepath); | ||
| if (!dir.exists()) { | ||
| dir.mkdirs(); | ||
| logger.info(" {} dir has been created.", SCHEMA_DIR); | ||
| } | ||
| } | ||
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| public void checkFile(String filepath) { | ||
| // create file : read timestamp precision from engine.properties, create system_properties.txt | ||
| // use output stream to write timestamp precision to file. | ||
| File file = new File(filepath + File.separator + PROPERTIES_FILE_NAME); | ||
| try { | ||
| if (!file.exists()) { | ||
| file.createNewFile(); | ||
| logger.info(" {} has been created.", file.getAbsolutePath()); | ||
| try (FileOutputStream outputStream = new FileOutputStream(file.toString())) { | ||
| properties.setProperty("timestamp_precision", TIMESTAMP_PRECISION); | ||
| properties.store(outputStream, "System properties:"); | ||
| } | ||
| } | ||
| } catch (IOException e) { | ||
| logger.error("Can not create {}.", file.getAbsolutePath(), e); | ||
| } | ||
| // get existed properties from system_properties.txt | ||
| File inputFile = new File(filepath + File.separator + PROPERTIES_FILE_NAME); | ||
| try (FileInputStream inputStream = new FileInputStream(inputFile.toString())) { | ||
| properties.load(new InputStreamReader(inputStream, TSFileConfig.STRING_ENCODING)); | ||
| if (!properties.getProperty("timestamp_precision").equals(TIMESTAMP_PRECISION)) { | ||
| logger.error("Wrong timestamp precision, please set as: " + properties | ||
| .getProperty("timestamp_precision") + " !"); | ||
| System.exit(-1); | ||
| } | ||
| } catch (IOException e) { | ||
| logger.error("Load system.properties from {} failed.", file.getAbsolutePath(), e); | ||
| } | ||
| } | ||
| } | ||
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