README.md

InfluxDB Nodejs Boilerplate Application

A basic application to help you get started writing an application against InfluxDB using the Node.js client.

The following environment variables are required to be set:

• INFLUXDB_ORGANIZATION - The name of your organization
• INFLUXDB_HOST - The hostname of the InfluxDB instance or Cloud environment you are using
• INFLUXDB_TOKEN - A token with read permissions to the bucket specified in INFLUXDB_BUCKET
• INFLUXDB_BUCKET - The name of your bucket

This application provides the ability to write data for its users, setup tasks to downsample their data, and query that downsampled data.

flowchart LR
  task[[task]]
  /tasks-. create task .->task
  /ingest-- raw data -->task
  task-- downsampled data -->/query

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From this directory with the environment variables above set in scope, run the application with node main.js to start the application listening on port 8080.

• Verify the application is running by navigating to http://localhost:8080 in your browser to see a welcome message.

• POST a request to the /tasks endpoint to install a downsampling task for the specified user.

  {
    "user_id":"user1",
  }
  

• POST a request to the /ingest endpoint to write data for the specified.

  {
    "user_id":"user1", 
    "measurement":"measurement1",
    "field1":10002
  }
  

• POST a request to the /query endpoint to receive the latest data for the specified user.

  {
    "user_id":"user1",
  }
  

  The response is formatted as JSON.

  {
    "tables": [
    {
      "records": [
      {
        "_field": "field1_min",
        "_measurement": "downsampled",
        "_start": "2022-05-20 03",
        "_stop": "2022-05-21 03",
        "_time": "2022-05-21 03",
        "_value": "1",
        "result": "_result",
        "table": "0",
        "user_id": "user1"
      },
      {
        "_field": "field1_max",
        "_measurement": "downsampled",
        "_start": "2022-05-20 03",
        "_stop": "2022-05-21 03",
        "_time": "2022-05-21 03",
        "_value": "75",
        "result": "_result",
        "table": "1",
        "user_id": "user1"
      },
      {
        "_field": "field1_mean",
        "_measurement": "downsampled",
        "_start": "2022-05-20 03",
        "_stop": "2022-05-21 03",
        "_time": "2022-05-21 03",
        "_value": "14.272727272727273",
        "result": "_result",
        "table": "2",
        "user_id": "user1"
      }]
    }]
  }