# nodejs-samples

**Repository Path**: mirrors_influxdata/nodejs-samples

## Basic Information

- **Project Name**: nodejs-samples
- **Description**: InfluxDB Nodejs samples
- **Primary Language**: Unknown
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2022-07-20
- **Last Updated**: 2025-08-23

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# InfluxDB Nodejs Boilerplate Application

A basic application to help you get started writing an application against InfluxDB 
using the [Node.js client](https://github.com/influxdata/influxdb-client-js).

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.

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

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"
      }]
    }]
  }
  ```