Ampli for Go

Amplitude Data supports tracking analytics events from Go apps. The generated tracking library is packaged as a Go package.

Quick start

  1. (Prerequisite) Create a Tracking Plan in Amplitude Data

    Plan your events and properties in Amplitude Data. See detailed instructions here

  2. Install the Amplitude SDK

    1go get github.com/amplitude/analytics-go
  3. Install the Ampli CLI

    1npm install -g @amplitude/ampli
  4. Pull the Ampli Wrapper into your project

    1ampli pull [--path ./ampli]
  5. Initialize the Ampli Wrapper

    1import "<your-module-name>/ampli"
    2 
    3ampli.Instance.Load(ampli.LoadOptions{
    4 Client: ampli.LoadClientOptions{
    5 Configuration: ampli.NewClientConfig(AMPLITUDE_API_KEY),
    6 },
    7})
  6. Identify users and set user properties

    1ampli.Instance.Identify(userID, ampli.Identify.Builder().
    2 UserProp("A trait associated with this user").
    3 Build(),
    4)
  7. Track events with strongly typed methods and classes

    1ampli.Instance.SongPlayed("user_id", ampli.SongPlayed.Builder().SongId("song-1").Build())
    2ampli.Instance.Track("user_id", ampli.SongFavorited.Builder().SongId("song-2").Build())
  8. Flush events before application exit

    1ampli.Instance.Flush()
  9. Verify implementation status with CLI

    1ampli status [--update]

Install the SDK

If you haven't already, install the core Amplitude SDK dependencies analytics-go using go get:

1go get github.com/amplitude/analytics-go

Install Ampli CLI

You can install the Ampli CLI from Homebrew or NPM.

1brew tap amplitude/ampli
2brew install ampli

1npm install -g @amplitude/ampli

Pull the Ampli Wrapper into your project

Run the Ampli CLI pull command to log in to Amplitude Data and download the strongly typed Ampli Wrapper for your tracking plan. Ampli CLI commands are usually run from the project root directory.

1ampli pull

Ampli API

Ampli supports the following methods.

Load

Initialize Ampli in your code. The Load() method requires a configuration options parameter:

1import "<your-module-name>/ampli"
2 
3ampli.Instance.Load(ampli.LoadOptions{
4 Client: ampli.LoadClientOptions{
5 Configuration: ampli.NewClientConfig(AMPLITUDE_API_KEY),
6 },
7})
Arg of load() Description
options Required. A instance of LoadOptions. Specifies configuration options for the Ampli Wrapper.
Arg of LoadOptions
Description
Instance Required if APIKey isn't set. Specifies an Amplitude instance. By default Ampli creates an instance for you.
APIKey Required if Instance isn't set. Specifies an API Key. This option overrides the default, which is the API Key configured in your tracking plan.
Disabled Specifies whether the Ampli Wrapper does any work. When true, all calls to the Ampli Wrapper are no-ops. Useful in local or development environments.
Client A instance of LoadClientOptions specifies configuration options for the Amplitude core SDK client.
Arg of LoadClientOptions
Description
Configuration Specifies the Amplitude configuration. This option overrides the default configuration.

Identify

Call Identify() to identify a user in your app and associate all future events with their identity, or to set their properties.

Just as Ampli creates types for events and their properties, it creates types for user properties.

The Identify() function accepts a string userID, an Identify event instance, and optional amplitude.EventOptions.

All properties are passed in as parameters of methods to ampli.Identify.Builder(). For example your tracking plan only contains a required user property called role. The property's type is a string.

1ampli.Instance.Identify(
2 "user_id",
3 ampli.Identify.Builder().Role("admin").Build(),
4)

The options argument allows you to pass Amplitude fields for this call, such as DeviceID.

1ampli.Instance.Identify(
2 "user_id",
3 ampli.Identify.Builder().Role("admin").Build(),
4 amplitude.EventOptions{
5 DeviceID: "device_id",
6 },
7)

Groups

Groups

The Amplitude Go SDK and Go Ampli Wrapper don't support Groups. If you're interested in this feature, submit a feature request through the widget on the Amplitude dashboard, or through a support ticket.

Track

To track an event, call the event's corresponding function. Every event in your tracking plan gets its own function in the Ampli Wrapper. The call is structured like this:

1ampli.Instance.EventName(userID, ampli.EventName.Builder().EventProp(true).Build())

Optional EventOptions argument allows you to pass Amplitude fields, like DeviceID.

For example, in the following code snippet, your tracking plan contains an event called songPlayed. The event is defined with two required properties: songId and songFavorited. The property type for songId is string, and songFavorited is a boolean.

1ampli.Instance.SongPlayed("user_id", ampli.SongPlayed.Builder().
2 SongId("songId").
3 SongPlayed(true).
4 Build(),
5 amplitude.EventOptions{}
6)

Ampli also generates a builder for each event. Use EventName.Builder() to get the corresponding builder for each event.

1ampli.Instance.SongPlayed.Builder().
2 SongId("songId").
3 SongPlayed(true).
4 Build()

Send event objects using the generic track method.

1ampli.Instance.Track("user-id", ampli.SongPlayed.Builder().
2 SongId("songId").
3 SongPlayed(true).
4 Build(),
5)

Flush

The Ampli wrapper queues events and sends them on an interval based on the configuration.

Call Flush() to immediately send any pending events.

1ampli.Instance.Flush()

Plugin

Plugins allow you to extend the Amplitude behavior, for example, modifying event properties (enrichment type) or sending to third-party APIs (destination type).

First you need to define your plugin: plugin examples.

Add your plugin after init Ampli:

1ampli.Instance.Client.Add(myDestinationPlugin)

Ampli CLI

Pull

The pull command downloads the Ampli Wrapper code to your project. Run the pull command from the project root.

1ampli pull

You will be prompted to log in to your workspace and select a source.

1ampli pull
2Ampli project is not initialized. No existing `ampli.json` configuration found.
3? Create a new Ampli project here? Yes
4? Organization: Amplitude
5? Workspace: My Workspace
6? Source: My Source

Status

Verify that events are implemented in your code with the status command:

1ampli status [--update]

The output displays status and indicates what events are missing.

1ampli status
2Verifying event tracking implementation in source code
3Song Played (1 location)
4Song Stopped Called when a user stops playing a song.
5Events Tracked: 1 missed, 2 total
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June 18th, 2024

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