OpenTSDB使用总结-(1)

样例代码

写入数据

功能简介

使用OpenTSDB的接口写入数据。函数genWeatherData()模拟生成的气象数据，函数put()发送气象数据到OpenTSDB服务端。

样例代码

private static String PUT_URL = "http://" + OPENTSDB_IP + ":" + OPENTSDB_PORT + "/api/put/?sync&sync_timeout=60000"; 

static class DataPoint {

  public String metric;

  public Long timestamp;

  public Double value;

  public Map<String, String> tags;

  public DataPoint(String metric, Long timestamp, Double value, Map<String, String> tags) {

    this.metric = metric;

    this.timestamp = timestamp;

    this.value = value;

    this.tags = tags;

  }

}

private String genWeatherData() {

  List<DataPoint> dataPoints = new ArrayList<DataPoint>();

  Map<String, String> tags = ImmutableMap.of("city", "Shenzhen", "region", "Longgang");

  // Data of air temperature

  dataPoints.add(new DataPoint("city.temp", 1498838400L, 28.0, tags));

  dataPoints.add(new DataPoint("city.temp", 1498842000L, 27.0, tags));

  dataPoints.add(new DataPoint("city.temp", 1498845600L, 27.0, tags));

  dataPoints.add(new DataPoint("city.temp", 1498849200L, 27.0, tags));

  dataPoints.add(new DataPoint("city.temp", 1498852800L, 27.0, tags));

  dataPoints.add(new DataPoint("city.temp", 1498856400L, 27.0, tags));

  dataPoints.add(new DataPoint("city.temp", 1498860000L, 27.0, tags));

  dataPoints.add(new DataPoint("city.temp", 1498863600L, 27.0, tags));

  dataPoints.add(new DataPoint("city.temp", 1498867200L, 29.0, tags));

  dataPoints.add(new DataPoint("city.temp", 1498870800L, 30.0, tags));

  dataPoints.add(new DataPoint("city.temp", 1498874400L, 32.0, tags));

  dataPoints.add(new DataPoint("city.temp", 1498878000L, 32.0, tags));

  dataPoints.add(new DataPoint("city.temp", 1498881600L, 33.0, tags));

  dataPoints.add(new DataPoint("city.temp", 1498885200L, 33.0, tags));

  dataPoints.add(new DataPoint("city.temp", 1498888800L, 32.0, tags));

  dataPoints.add(new DataPoint("city.temp", 1498892400L, 32.0, tags));

  dataPoints.add(new DataPoint("city.temp", 1498896000L, 31.0, tags));

  dataPoints.add(new DataPoint("city.temp", 1498899600L, 30.0, tags));

  dataPoints.add(new DataPoint("city.temp", 1498903200L, 30.0, tags));

  dataPoints.add(new DataPoint("city.temp", 1498906800L, 29.0, tags));

  dataPoints.add(new DataPoint("city.temp", 1498910400L, 29.0, tags));

  dataPoints.add(new DataPoint("city.temp", 1498914000L, 29.0, tags));

  dataPoints.add(new DataPoint("city.temp", 1498917600L, 28.0, tags));

  dataPoints.add(new DataPoint("city.temp", 1498921200L, 28.0, tags));

  // Data of humidity

  dataPoints.add(new DataPoint("city.hum", 1498838400L, 54.0, tags));

  dataPoints.add(new DataPoint("city.hum", 1498842000L, 53.0, tags));

  dataPoints.add(new DataPoint("city.hum", 1498845600L, 52.0, tags));

  dataPoints.add(new DataPoint("city.hum", 1498849200L, 51.0, tags));

  dataPoints.add(new DataPoint("city.hum", 1498852800L, 50.0, tags));

  dataPoints.add(new DataPoint("city.hum", 1498856400L, 49.0, tags));

  dataPoints.add(new DataPoint("city.hum", 1498860000L, 48.0, tags));

  dataPoints.add(new DataPoint("city.hum", 1498863600L, 46.0, tags));

  dataPoints.add(new DataPoint("city.hum", 1498867200L, 46.0, tags));

  dataPoints.add(new DataPoint("city.hum", 1498870800L, 48.0, tags));

  dataPoints.add(new DataPoint("city.hum", 1498874400L, 48.0, tags));

  dataPoints.add(new DataPoint("city.hum", 1498878000L, 49.0, tags));

  dataPoints.add(new DataPoint("city.hum", 1498881600L, 49.0, tags));

  dataPoints.add(new DataPoint("city.hum", 1498885200L, 50.0, tags));

  dataPoints.add(new DataPoint("city.hum", 1498888800L, 50.0, tags));

  dataPoints.add(new DataPoint("city.hum", 1498892400L, 50.0, tags));

  dataPoints.add(new DataPoint("city.hum", 1498896000L, 51.0, tags));

  dataPoints.add(new DataPoint("city.hum", 1498899600L, 51.0, tags));

  dataPoints.add(new DataPoint("city.hum", 1498903200L, 51.0, tags));

  dataPoints.add(new DataPoint("city.hum", 1498906800L, 51.0, tags));

  dataPoints.add(new DataPoint("city.hum", 1498910400L, 52.0, tags));

  dataPoints.add(new DataPoint("city.hum", 1498914000L, 53.0, tags));

  dataPoints.add(new DataPoint("city.hum", 1498917600L, 54.0, tags));

  dataPoints.add(new DataPoint("city.hum", 1498921200L, 54.0, tags));

  Gson gson = new Gson();

  return gson.toJson(dataPoints);

}

public void put() throws ClientProtocolException, IOException {

  try (CloseableHttpClient httpClient = HttpClients.createDefault()) {

    HttpPost httpPost = new HttpPost(PUT_URL);

    String weatherData = genWeatherData();

    StringEntity entity = new StringEntity(weatherData, "ISO-8859-1");

    entity.setContentType("application/json");

    httpPost.setEntity(entity);

    HttpResponse response = httpClient.execute(httpPost);

    int statusCode = response.getStatusLine().getStatusCode();
    System.out.println("Status Code : " + statusCode);
    if (statusCode != HttpStatus.SC_NO_CONTENT) {
      System.out.println("Request failed! " + response.getStatusLine());
    }

  }

}

查询数据

功能简介

使用OpenTSDB的查询接口读取数据.函数genQueryReq()生成查询请求，函数query()把查询请求发送到OpenTSDB服务端。

样例代码

private static String QUERY_URL = "http://" + OPENTSDB_IP + ":" + OPENTSDB_PORT + "/api/query";

static class Query {
  public Long start;
  public Long end;
  public boolean delete = false;
  public List<SubQuery> queries;
}

static class SubQuery {
  public String metric;
  public String aggregator;
  public SubQuery(String metric, String aggregator) {
    this.metric = metric;
    this.aggregator = aggregator;
  }
}

String genQueryReq() {
  Query query = new Query();
  query.start = 1498838400L;
  query.end = 1498921200L;
  query.queries = ImmutableList.of(new SubQuery("city.temp", "sum"), new SubQuery("city.hum", "sum"));
//查询内部温度湿度取和
  Gson gson = new Gson();
  return gson.toJson(query);
}

public void query() throws ClientProtocolException, IOException {
  try (CloseableHttpClient httpClient = HttpClients.createDefault()) {
    HttpPost httpPost = new HttpPost(QUERY_URL);
    String queryRequest = genQueryReq();
    //System.out.println("Request=" + queryRequest);
    StringEntity entity = new StringEntity(queryRequest, "ISO-8859-1");
    entity.setContentType("application/json");
    httpPost.setEntity(entity);
    HttpResponse response = httpClient.execute(httpPost);

int statusCode = response.getStatusLine().getStatusCode();
System.out.println("Status Code : " + statusCode);
if (statusCode != HttpStatus.SC_OK) {
  System.out.println("Request failed! " + response.getStatusLine());
}

String body = EntityUtils.toString(response.getEntity(), "ISO-8859-1");
System.out.println("Response content : " + body);

  }
}

删除数据

功能简介

使用OpenTSDB的查询接口读取数据，但是要加上delete参数，并且设置为true。函数genQueryReq()生成查询请求，函数query()把查询请求发送到OpenTSDB服务端

样例代码

private static String QUERY_URL = "http://" + OPENTSDB_IP + ":" + OPENTSDB_PORT + "/api/query";

static class Query {
  public Long start;
  public Long end;
  public boolean delete = false;
  public List<SubQuery> queries;
}

static class SubQuery {
  public String metric;
  public String aggregator;
  public SubQuery(String metric, String aggregator) {
    this.metric = metric;
    this.aggregator = aggregator;
  }
}

String genQueryReq() {
  Query query = new Query();
  query.start = 1498838400L;
  query.end = 1498921200L;
  query.queries = ImmutableList.of(new SubQuery("city.temp", "sum"), new SubQuery("city.hum", "sum"));
  Gson gson = new Gson();
  return gson.toJson(query);
}

String genDeleteReq() {
  Query query = new Query();
  query.start = 1498838400L;
  query.end = 1498921200L;
  query.queries = ImmutableList.of(new SubQuery("city.temp", "sum"), new SubQuery("city.hum", "sum"));
  query.delete = true;  

  Gson gson = new Gson();
  return gson.toJson(query);
}

public void delete() throws ClientProtocolException, IOException {
  try (CloseableHttpClient httpClient = HttpClients.createDefault()) {
    HttpPost httpPost = new HttpPost(QUERY_URL);
    String deleteRequest = genDeleteReq();
    StringEntity entity = new StringEntity(deleteRequest, "ISO-8859-1");
    entity.setContentType("application/json");
    httpPost.setEntity(entity);
    HttpResponse response = httpClient.execute(httpPost);

int statusCode = response.getStatusLine().getStatusCode();
System.out.println("Status Code : " + statusCode);
if (statusCode != HttpStatus.SC_OK) {
  System.out.println("Request failed! " + response.getStatusLine());
}

  }
}