Heap

Overview

Enabling the Heap integration allows you to export Statsig events to your configured Heap app with information on the status of each user's feature gate and experimentation groups.

Statsig will send events to Heap when a client SDK is initialized and will also forward events as they are received.

Client SDK Initialize Events

Statsig sends the following events to your Heap app every time you call the initialize API from a Statsig client SDK.

Event Name	Properties
Statsig Feature Gates	For each Statsig Feature flag, this field contains a property that maps the name of the feature gate to true or false, stating whether the user passes or does not pass the feature gate.
Statsig Experiments	For each Statsig Experiment, this field contains a property that maps the name of the experiment to the variant that the user is assigned to.

Exposures and Custom Event Forwarding

Statsig can forward events as they are received from SDKs, Integrations or the HTTP API.

Events include exposures (Gate, Experiment, Config) and custom events.

Event Format

Events will be sent in batches in a JSON format. The structure of a Statsig Event sent will look like the following:

Field	Type	Description
eventName	String	Name of the event provided
user	JSON	Statsig User Object
userID	String	User ID provided
timestamp	Number	Timestamp in MS of the event
value	String	Value of the event provided
metadata	JSON	Custom Metadata provided
statsigMetadata	JSON	Metadata related to the logging of this event added by Statsig
timeUUID	String	UUID for the event
unitID	String	Unit ID of the exposure (e.g. userID, stableID, or the customID)

Custom Event Formatting - logEvent

{
  "eventName": "my_custom_event",
  "user": {
    "userID": "a_user",
    "email": "a.user@email.com"
  },
  "userID": "a_user",
  "timestamp": "1655231253265",
  "statsigMetadata": {
    ...
  },
  "value": "a_custom_value",
  "metadata": {
    "key_a": "value_a",
    "key_b": "123"
  },
  "timeUUID": "abd2a983-ec0f-11ec-917a-fb8cdaeda578"
}

Feature Gate Exposure Formatting - checkGate

{
  "eventName": "statsig::gate_exposure",
  "user": { ... },
  "userID": "a_user",
  "timestamp": "1655231253265",
  "statsigMetadata": { ... },
  "value": "",
  "metadata": {
    "gate": "a_gate",
    "gateValue": "false",
    "ruleID": "default",
    "reason": "Network",
    "time": "1655231249644"
  },
  "timeUUID": "8d7c1040-ec11-11ec-g123-abe2c32fcf46",
  "unitID": "userID"
}

Dynamic Config Exposure Formatting - getConfig

{
  "eventName": "statsig::config_exposure",
  "user": { ... },
  "userID": "a_user",
  "timestamp": "1655231253265",
  "statsigMetadata": { ... },
  "value": "",
  "metadata": {
    "config": "a_config",
    "ruleID": "default",
    "reason": "Network",
    "time": "1655231249644"
  },
  "timeUUID": "af379f60-ec11-22ad-8e0a-05c3ee70bd0c",
  "unitID": "userID"
}

Experiment Exposure Formatting - getExperiment

{
  "eventName": "statsig::experiment_exposure",
  "user": { ... },
  "userID": "a_user",
  "timestamp": "1655232119734",
  "statsigMetadata": { ... },
  "value": "",
  "metadata": {
    "config": "an_experiment",
    "ruleID": "4SauZJcM1T7zNvh1igBjwE",
    "reason": "Network",
    "time": "1655231249644",
    "experimentGroupName": "Control"
  },
  "timeUUID": "af379f61-ab22-11ec-8e0a-05c3ee70bd0c",
  "unitID": "userID"
}

Example Batch

[
  {
    "eventName": "page_view",
    "user": {"userID": "user_1", "country": "US"},
    "userID": "user_1",
    "timestamp": 1644520566967,
    "value": "example_value",
    "metadata": {"page": "home_page"},
    "statsigMetadata": {},
    "timeUUID": "f4c414a0-8ab5-11ec-a8a3-0242ac120002"
  },
  {
    "eventName": "statsig::gate_exposure",
    "user": {"userID": "user_1", "country": "US"},
    "userID": "user_1",
    "timestamp": 1644520566968,
    "value": "",
    "metadata": {"gate": "test_gate", "gateValue": "true", "ruleID": "default"},
    "statsigMetadata": {},
    "timeUUID": "f4c414a0-8ab5-11ec-a8a3-0242ac120003",
    "unitID": "userID"
  },
  {
    "eventName": "statsig::experiment_exposure"
    "user": {"userID": "user_1", "country": "US"},
    "userID": "user_1",
    "timestamp": 1644520566969,
    "value": "",
    "metadata": {
       "config": "an_experiment", "ruleID": "4SauZJcM1T7zNvh1igBjwE", "reason": "Network", "time": "1655231249644", "experimentGroupName": "Control"
    },
    "statsigMetadata": {},
    "timeUUID": "f4c414a0-8ab5-11ec-a8a3-0242ac120004",
    "unitID": "userID"
  }
]

Configuring Outbound Events

1. Navigate to your Heap Projects page to find and copy the App ID for your project.

2. Paste the App ID into the App ID input field for the Heap configuration in the Statsig Integrations page and save your changes.