550 lines
23 KiB
Markdown
550 lines
23 KiB
Markdown
---
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stage: Growth
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group: Product Intelligence
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info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
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---
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# Implement Snowplow tracking
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This page describes how to:
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- Implement Snowplow frontend and backend tracking
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- Test Snowplow events
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## Snowplow JavaScript frontend tracking
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GitLab provides a `Tracking` interface that wraps the [Snowplow JavaScript tracker](https://docs.snowplowanalytics.com/docs/collecting-data/collecting-from-own-applications/javascript-trackers/)
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to track custom events.
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For the recommended frontend tracking implementation, see [Usage recommendations](#usage-recommendations).
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Structured events and page views include the [`gitlab_standard`](schemas.md#gitlab_standard)
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context, using the `window.gl.snowplowStandardContext` object which includes
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[default data](https://gitlab.com/gitlab-org/gitlab/-/blob/master/app/views/layouts/_snowplow.html.haml)
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as base:
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| Property | Example |
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| -------- | ------- |
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| `context_generated_at` | `"2022-01-01T01:00:00.000Z"` |
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| `environment` | `"production"` |
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| `extra` | `{}` |
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| `namespace_id` | `123` |
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| `plan` | `"gold"` |
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| `project_id` | `456` |
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| `source` | `"gitlab-rails"` |
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| `user_id` | `789`* |
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_\* Undergoes a pseudonymization process at the collector level._
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These properties [are overridden](https://gitlab.com/gitlab-org/gitlab/-/blob/master/app/assets/javascripts/tracking/get_standard_context.js)
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with frontend-specific values, like `source` (`gitlab-javascript`), `google_analytics_id`
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and the custom `extra` object. You can modify this object for any subsequent
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structured event that fires, although this is not recommended.
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Tracking implementations must have an `action` and a `category`. You can provide additional
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properties from the [structured event taxonomy](index.md#structured-event-taxonomy), in
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addition to an `extra` object that accepts key-value pairs.
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| Property | Type | Default value | Description |
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|:-----------|:-------|:---------------------------|:---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| `category` | string | `document.body.dataset.page` | Page or subsection of a page in which events are captured. |
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| `action` | string | `'generic'` | Action the user is taking. Clicks must be `click` and activations must be `activate`. For example, focusing a form field is `activate_form_input`, and clicking a button is `click_button`. |
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| `data` | object | `{}` | Additional data such as `label`, `property`, `value` as described in [Structured event taxonomy](index.md#structured-event-taxonomy), `context` for custom contexts, and `extra` (key-value pairs object). |
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### Usage recommendations
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- Use [data attributes](#implement-data-attribute-tracking) on HTML elements that emit `click`, `show.bs.dropdown`, or `hide.bs.dropdown` events.
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- Use the [Vue mixin](#implement-vue-component-tracking) for tracking custom events, or if the supported events for data attributes are not propagating. For example, clickable components that don't emit `click`.
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- Use the [tracking class](#implement-raw-javascript-tracking) when tracking in vanilla JavaScript files.
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### Implement data attribute tracking
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To implement tracking for HAML or Vue templates, add a [`data-track` attribute](#data-track-attributes) to the element.
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The following example shows `data-track-*` attributes assigned to a button:
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```haml
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%button.btn{ data: { track_action: "click_button", track_label: "template_preview", track_property: "my-template" } }
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```
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```html
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<button class="btn"
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data-track-action="click_button"
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data-track-label="template_preview"
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data-track-property="my-template"
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data-track-extra='{ "template_variant": "primary" }'
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/>
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```
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#### `data-track` attributes
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| Attribute | Required | Description |
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|:----------------------|:---------|:------------|
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| `data-track-action` | true | Action the user is taking. Clicks must be prepended with `click` and activations must be prepended with `activate`. For example, focusing a form field is `activate_form_input` and clicking a button is `click_button`. Replaces `data-track-event`, which was [deprecated](https://gitlab.com/gitlab-org/gitlab/-/issues/290962) in GitLab 13.11. |
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| `data-track-label` | false | The specific element or object to act on. This can be: the label of the element, for example, a tab labeled 'Create from template' for `create_from_template`; a unique identifier if no text is available, for example, `groups_dropdown_close` for closing the Groups dropdown in the top bar; or the name or title attribute of a record being created. |
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| `data-track-property` | false | Any additional property of the element, or object being acted on. |
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| `data-track-value` | false | Describes a numeric value (decimal) directly related to the event. This could be the value of an input. For example, `10` when clicking `internal` visibility. If omitted, this is the element's `value` property or `undefined`. For checkboxes, the default value is the element's checked attribute or `0` when unchecked. The value is parsed as numeric before sending the event. |
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| `data-track-extra` | false | A key-value pair object passed as a valid JSON string. This attribute is added to the `extra` property in our [`gitlab_standard`](schemas.md#gitlab_standard) schema. |
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| `data-track-context` | false | To append a custom context object, passed as a valid JSON string. |
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#### Event listeners
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Event listeners bind at the document level to handle click events in elements with data attributes.
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This allows them to be handled when the DOM re-renders or changes. Document-level binding reduces
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the likelihood that click events stop propagating up the DOM tree.
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If click events stop propagating, you must implement listeners and [Vue component tracking](#implement-vue-component-tracking) or [raw JavaScript tracking](#implement-raw-javascript-tracking).
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#### Helper methods
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You can use the following Ruby helpers:
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```ruby
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tracking_attrs(label, action, property) # { data: { track_label... } }
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tracking_attrs_data(label, action, property) # { track_label... }
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```
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You can also use it on HAML templates:
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```haml
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%button{ **tracking_attrs('main_navigation', 'click_button', 'navigation') }
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// When merging with additional data
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// %button{ data: { platform: "...", **tracking_attrs_data('main_navigation', 'click_button', 'navigation') } }
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```
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If you use the GitLab helper method [`nav_link`](https://gitlab.com/gitlab-org/gitlab/-/blob/master/app/helpers/tab_helper.rb#L76), you must wrap `html_options` under the `html_options` keyword argument. If you
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use the `ActionView` helper method [`link_to`](https://api.rubyonrails.org/v5.2.3/classes/ActionView/Helpers/UrlHelper.html#method-i-link_to), you don't need to wrap `html_options`.
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```ruby
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# Bad
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= nav_link(controller: ['dashboard/groups', 'explore/groups'], data: { track_label: "explore_groups",
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track_action: "click_button" })
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# Good
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= nav_link(controller: ['dashboard/groups', 'explore/groups'], html_options: { data: { track_label:
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"explore_groups", track_action: "click_button" } })
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# Good (other helpers)
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= link_to explore_groups_path, title: _("Explore"), data: { track_label: "explore_groups", track_action:
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"click_button" }
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```
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### Implement Vue component tracking
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For custom event tracking, use the [Vue mixin](https://gitlab.com/gitlab-org/gitlab/-/blob/master/app/assets/javascripts/tracking/tracking.js#L207). It exposes `Tracking.event` as the `track` method.
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You can specify tracking options by creating a `tracking` data object or
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computed property, and as a second parameter: `this.track('click_button', opts)`.
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These options override any defaults and allow the values to be dynamic from props or based on state:
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| Property | Type | Default | Example |
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| -- | -- | -- | -- |
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| `category` | string | `document.body.dataset.page` | `'code_quality_walkthrough'` |
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| `label` | string | `''` | `'process_start_button'` |
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| `property` | string | `''` | `'asc'` or `'desc'` |
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| `value` | integer | `undefined` | `0`, `1`, `500` |
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| `extra` | object | `{}` | `{ selectedVariant: this.variant }` |
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To implement Vue component tracking:
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1. Import the `Tracking` library and call the `mixin` method:
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```javascript
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import Tracking from '~/tracking';
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const trackingMixin = Tracking.mixin();
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// Optionally provide default properties
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// const trackingMixin = Tracking.mixin({ label: 'right_sidebar' });
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```
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1. Use the mixin in the component:
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```javascript
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export default {
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mixins: [trackingMixin],
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// Or
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// mixins: [Tracking.mixin()],
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// mixins: [Tracking.mixin({ label: 'right_sidebar' })],
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data() {
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return {
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expanded: false,
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};
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},
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};
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```
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1. You can specify tracking options in by creating a `tracking` data object
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or computed property:
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```javascript
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export default {
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name: 'RightSidebar',
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mixins: [Tracking.mixin()],
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data() {
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return {
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expanded: false,
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variant: '',
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tracking: {
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label: 'right_sidebar',
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// property: '',
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// value: '',
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// experiment: '',
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// extra: {},
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},
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};
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},
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// Or
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// computed: {
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// tracking() {
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// return {
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// property: this.variant,
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// extra: { expanded: this.expanded },
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// };
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// },
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// },
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};
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```
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1. Call the `track` method. Tracking options can be passed as the second parameter:
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```javascript
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this.track('click_button', {
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label: 'right_sidebar',
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});
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```
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Or use the `track` method in the template:
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```html
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<template>
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<div>
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<button data-testid="toggle" @click="toggle">Toggle</button>
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<div v-if="expanded">
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<p>Hello world!</p>
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<button @click="track('click_button')">Track another event</button>
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</div>
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</div>
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</template>
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```
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#### Testing example
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```javascript
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export default {
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name: 'CountDropdown',
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mixins: [Tracking.mixin({ label: 'count_dropdown' })],
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data() {
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return {
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variant: 'counter',
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count: 0,
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};
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},
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methods: {
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handleChange({ target }) {
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const { variant } = this;
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this.count = Number(target.value);
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this.track('change_value', {
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value: this.count,
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extra: { variant }
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});
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},
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},
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};
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```
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```javascript
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import { mockTracking } from 'helpers/tracking_helper';
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// mockTracking(category, documentOverride, spyMethod)
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describe('CountDropdown.vue', () => {
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let trackingSpy;
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let wrapper;
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...
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beforeEach(() => {
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trackingSpy = mockTracking(undefined, wrapper.element, jest.spyOn);
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});
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const findDropdown = () => wrapper.find('[data-testid="dropdown"]');
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it('tracks change event', () => {
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const dropdown = findDropdown();
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dropdown.element.value = 30;
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dropdown.trigger('change');
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expect(trackingSpy).toHaveBeenCalledWith(undefined, 'change_value', {
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value: 30,
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label: 'count_dropdown',
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extra: { variant: 'counter' },
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});
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});
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});
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```
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### Implement raw JavaScript tracking
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To track from a vanilla JavaScript file, use the `Tracking.event` static function
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(calls [`dispatchSnowplowEvent`](https://gitlab.com/gitlab-org/gitlab/-/blob/master/app/assets/javascripts/tracking/dispatch_snowplow_event.js)).
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The following example demonstrates tracking a click on a button by manually calling `Tracking.event`.
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```javascript
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import Tracking from '~/tracking';
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const button = document.getElementById('create_from_template_button');
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button.addEventListener('click', () => {
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Tracking.event(undefined, 'click_button', {
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label: 'create_from_template',
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property: 'template_preview',
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extra: {
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templateVariant: 'primary',
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valid: 1,
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},
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});
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});
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```
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#### Testing example
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```javascript
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import Tracking from '~/tracking';
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describe('MyTracking', () => {
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let wrapper;
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beforeEach(() => {
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jest.spyOn(Tracking, 'event');
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});
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const findButton = () => wrapper.find('[data-testid="create_from_template"]');
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it('tracks event', () => {
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findButton().trigger('click');
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expect(Tracking.event).toHaveBeenCalledWith(undefined, 'click_button', {
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label: 'create_from_template',
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property: 'template_preview',
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extra: {
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templateVariant: 'primary',
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valid: true,
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},
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});
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});
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});
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```
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### Form tracking
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To enable Snowplow automatic [form tracking](https://docs.snowplowanalytics.com/docs/collecting-data/collecting-from-own-applications/javascript-trackers/javascript-tracker/javascript-tracker-v2/tracking-specific-events/#form-tracking):
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1. Call `Tracking.enableFormTracking` when the DOM is ready.
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1. Provide a `config` object that includes at least one of the following elements:
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- `forms` determines the forms to track. Identified by the CSS class name.
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- `fields` determines the fields inside the tracked forms to track. Identified by the field `name`.
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1. Optional. Provide a list of contexts as the second argument. The [`gitlab_standard`](schemas.md#gitlab_standard) schema is excluded from these events.
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```javascript
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Tracking.enableFormTracking({
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forms: { allow: ['sign-in-form', 'password-recovery-form'] },
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fields: { allow: ['terms_and_conditions', 'newsletter_agreement'] },
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});
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```
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#### Testing example
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```javascript
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import Tracking from '~/tracking';
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describe('MyFormTracking', () => {
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let formTrackingSpy;
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beforeEach(() => {
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formTrackingSpy = jest
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.spyOn(Tracking, 'enableFormTracking')
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.mockImplementation(() => null);
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});
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it('initialized with the correct configuration', () => {
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expect(formTrackingSpy).toHaveBeenCalledWith({
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forms: { allow: ['sign-in-form', 'password-recovery-form'] },
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fields: { allow: ['terms_and_conditions', 'newsletter_agreement'] },
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});
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});
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});
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```
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## Implement Ruby backend tracking
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`Gitlab::Tracking` is an interface that wraps the [Snowplow Ruby Tracker](https://docs.snowplowanalytics.com/docs/collecting-data/collecting-from-own-applications/ruby-tracker/) for tracking custom events.
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Backend tracking provides:
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- User behavior tracking
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- Instrumentation to monitor and visualize performance over time in a section or aspect of code.
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To add custom event tracking and instrumentation, call the `GitLab::Tracking.event` class method.
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For example:
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```ruby
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class Projects::CreateService < BaseService
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def execute
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project = Project.create(params)
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Gitlab::Tracking.event('Projects::CreateService', 'create_project', label: project.errors.full_messages.to_sentence,
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property: project.valid?.to_s, project: project, user: current_user, namespace: namespace)
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end
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end
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```
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Use the following arguments:
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| Argument | Type | Default value | Description |
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|------------|---------------------------|---------------|-----------------------------------------------------------------------------------------------------------------------------------|
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| `category` | String | | Area or aspect of the application. For example, `HealthCheckController` or `Lfs::FileTransformer`. |
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| `action` | String | | The action being taken. For example, a controller action such as `create`, or an Active Record callback. |
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| `label` | String | `nil` | The specific element or object to act on. This can be one of the following: the label of the element, for example, a tab labeled 'Create from template' for `create_from_template`; a unique identifier if no text is available, for example, `groups_dropdown_close` for closing the Groups dropdown in the top bar; or the name or title attribute of a record being created. |
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| `property` | String | `nil` | Any additional property of the element, or object being acted on. |
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| `value` | Numeric | `nil` | Describes a numeric value (decimal) directly related to the event. This could be the value of an input. For example, `10` when clicking `internal` visibility. |
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| `context` | Array\[SelfDescribingJSON\] | `nil` | An array of custom contexts to send with this event. Most events should not have any custom contexts. |
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| `project` | Project | `nil` | The project associated with the event. |
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| `user` | User | `nil` | The user associated with the event. This value undergoes a pseudonymization process at the collector level. |
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| `namespace` | Namespace | `nil` | The namespace associated with the event. |
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| `extra` | Hash | `{}` | Additional keyword arguments are collected into a hash and sent with the event. |
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### Unit testing
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To test backend Snowplow events, use the `expect_snowplow_event` helper. For more information, see
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[testing best practices](../testing_guide/best_practices.md#test-snowplow-events).
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### Performance
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We use the [AsyncEmitter](https://docs.snowplowanalytics.com/docs/collecting-data/collecting-from-own-applications/ruby-tracker/emitters/#the-asyncemitter-class) when tracking events, which allows for instrumentation calls to be run in a background thread. This is still an active area of development.
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## Develop and test Snowplow
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To develop and test a Snowplow event, there are several tools to test frontend and backend events:
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| Testing Tool | Frontend Tracking | Backend Tracking | Local Development Environment | Production Environment | Production Environment |
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|----------------------------------------------|--------------------|---------------------|-------------------------------|------------------------|------------------------|
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| Snowplow Analytics Debugger Chrome Extension | Yes | No | Yes | Yes | Yes |
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| Snowplow Inspector Chrome Extension | Yes | No | Yes | Yes | Yes |
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| Snowplow Micro | Yes | Yes | Yes | No | No |
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### Test frontend events
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Before you test frontend events in development, you must:
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1. [Enable Snowplow tracking in the Admin Area](index.md#enable-snowplow-tracking).
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1. Turn off ad blockers that could prevent Snowplow JavaScript from loading in your environment.
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1. Turn off "Do Not Track" (DNT) in your browser.
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All URLs are pseudonymized. The entity identifier [replaces](https://docs.snowplowanalytics.com/docs/collecting-data/collecting-from-own-applications/javascript-trackers/javascript-tracker/javascript-tracker-v2/tracker-setup/other-parameters-2/#Setting_a_custom_page_URL_and_referrer_URL) personally identifiable
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information (PII). PII includes usernames, group, and project names.
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Page titles are hardcoded as `GitLab` for the same reason.
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#### Snowplow Analytics Debugger Chrome Extension
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[Snowplow Analytics Debugger](https://www.iglooanalytics.com/blog/snowplow-analytics-debugger-chrome-extension.html) is a browser extension for testing frontend events. It works in production, staging, and local development environments.
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1. Install the [Snowplow Analytics Debugger](https://chrome.google.com/webstore/detail/snowplow-analytics-debugg/jbnlcgeengmijcghameodeaenefieedm) Chrome browser extension.
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1. Open Chrome DevTools to the Snowplow Analytics Debugger tab.
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|
|
|
#### Snowplow Inspector Chrome Extension
|
|
|
|
Snowplow Inspector Chrome Extension is a browser extension for testing frontend events. This works in production, staging, and local development environments.
|
|
|
|
1. Install [Snowplow Inspector](https://chrome.google.com/webstore/detail/snowplow-inspector/maplkdomeamdlngconidoefjpogkmljm?hl=en).
|
|
1. To open the extension, select the Snowplow Inspector icon beside the address bar.
|
|
1. Click around on a webpage with Snowplow to see JavaScript events firing in the inspector window.
|
|
|
|
### Test backend events
|
|
|
|
#### Snowplow Micro
|
|
|
|
[Snowplow Micro](https://snowplowanalytics.com/blog/2019/07/17/introducing-snowplow-micro/) is a
|
|
Docker-based solution for testing backend and frontend in a local development environment. Snowplow Micro
|
|
records the same events as the full Snowplow pipeline. To query events, use the Snowplow Micro API.
|
|
|
|
It can be set up automatically using [GitLab Development Kit (GDK)](https://gitlab.com/gitlab-org/gitlab-development-kit).
|
|
See the [how-to docs](https://gitlab.com/gitlab-org/gitlab-development-kit/-/blob/main/doc/howto/snowplow_micro.md) for more details.
|
|
|
|
Optionally, you can set it up manually, using the following instructions.
|
|
|
|
#### Set up Snowplow Micro manually
|
|
|
|
To install and run Snowplow Micro, complete these steps to modify the
|
|
[GitLab Development Kit (GDK)](https://gitlab.com/gitlab-org/gitlab-development-kit):
|
|
|
|
1. Ensure [Docker is installed](https://docs.docker.com/get-docker/) and running.
|
|
|
|
1. To install Snowplow Micro, clone the settings in
|
|
[this project](https://gitlab.com/gitlab-org/snowplow-micro-configuration).
|
|
|
|
1. Navigate to the directory with the cloned project,
|
|
and start the appropriate Docker container:
|
|
|
|
```shell
|
|
./snowplow-micro.sh
|
|
```
|
|
|
|
1. Set the environment variable to tell the GDK to use Snowplow Micro in development. This overrides two `application_settings` options:
|
|
- `snowplow_enabled` setting will instead return `true` from `Gitlab::Tracking.enabled?`
|
|
- `snowplow_collector_hostname` setting will instead always return `localhost:9090` (or whatever is set for `SNOWPLOW_MICRO_URI`) from `Gitlab::Tracking.collector_hostname`.
|
|
|
|
```shell
|
|
export SNOWPLOW_MICRO_ENABLE=1
|
|
```
|
|
|
|
Optionally, you can set the URI for you Snowplow Micro instance as well (the default value is `http://localhost:9090`):
|
|
|
|
```shell
|
|
export SNOWPLOW_MICRO_URI=https://127.0.0.1:8080
|
|
```
|
|
|
|
1. Restart GDK:
|
|
|
|
```shell
|
|
gdk restart
|
|
```
|
|
|
|
1. Send a test Snowplow event from the Rails console:
|
|
|
|
```ruby
|
|
Gitlab::Tracking.event('category', 'action')
|
|
```
|
|
|
|
1. Navigate to `localhost:9090/micro/good` to see the event.
|
|
|
|
#### Useful links
|
|
|
|
- [Snowplow Micro repository](https://github.com/snowplow-incubator/snowplow-micro)
|
|
- [Installation guide recording](https://www.youtube.com/watch?v=OX46fo_A0Ag)
|
|
|
|
### Troubleshoot
|
|
|
|
To control content security policy warnings when using an external host, modify `config/gitlab.yml`
|
|
to allow or prevent them. To allow them, add the relevant host for `connect_src`. For example, for
|
|
`https://snowplow.trx.gitlab.net`:
|
|
|
|
```yaml
|
|
development:
|
|
<<: *base
|
|
gitlab:
|
|
content_security_policy:
|
|
enabled: true
|
|
directives:
|
|
connect_src: "'self' http://localhost:* http://127.0.0.1:* ws://localhost:* wss://localhost:* ws://127.0.0.1:* https://snowplow.trx.gitlab.net/"
|
|
```
|