OpenTelemetry ioredis Instrumentation for Node.js

This is a fork of the plugin, to add features required by aspecto until they are merged into the main repo and published.

This module provides automatic instrumentation for ioredis.

For automatic instrumentation see the @opentelemetry/node package.

Installation

npm install --save @opentelemetry/plugin-ioredis

Supported Versions

• >=2.0.0

Usage

To load a specific plugin (ioredis in this case), specify it in the Node Tracer's configuration

const { NodeTracerProvider } = require('@opentelemetry/node');

const provider = new NodeTracerProvider({
  plugins: {
    ioredis: {
      enabled: true,
      // You may use a package name or absolute path to the file.
      path: '@opentelemetry/plugin-ioredis',
    }
  }
});

To load all of the supported plugins, use below approach. Each plugin is only loaded when the module that it patches is loaded; in other words, there is no computational overhead for listing plugins for unused modules.

const { NodeTracerProvider } = require('@opentelemetry/node');

const provider = new NodeTracerProvider();

IORedis Plugin Options

IORedis plugin has few options available to choose from. You can set the following:

| Options | Type | Description | | ------- | ---- | ----------- | | dbStatementSerializer | DbStatementSerializer | IORedis plugin will serialize db.statement using the specified function. |

#### Custom db.statement Serializer The plugin serializes the whole command into a Span attribute called db.statement. The standard serialization format is {cmdName} {cmdArgs.join(',')}. It is also possible to define a custom serialization function. The function will receive the command name and arguments and must return a string.

Here is a simple example to serialize the command name skipping arguments:

const { NodeTracerProvider } = require('@opentelemetry/node');

const provider = new NodeTracerProvider({
  plugins: {
    ioredis: {
      enabled: true,
      // You may use a package name or absolute path to the file.
      path: '@opentelemetry/plugin-ioredis',
      dbStatementSerializer: function (cmdName, cmdArgs) {
        return cmdName;
      }
    }
  }
});

Useful links

• For more information on OpenTelemetry, visit: https://opentelemetry.io/
• For more about OpenTelemetry JavaScript: https://github.com/open-telemetry/opentelemetry-js
• For help or feedback on this project, join us on gitter

License

Apache 2.0 - See LICENSE for more information.