Server Side API

A set of PHP functions are available to assist in working with analytics data.

Constants

ALTIS_ANALYTICS_ELASTICSEARCH_URL

Allows you to define the Elasticsearch server URL directly.

ALTIS_ANALYTICS_LOG_QUERIES

Set this to true to enable logging queries to the error log.

Querying Functions

Altis\Analytics\Utils\query( array $query, array $params = [] ) : array

Queries the analytics data with the Elasticsearch Query DSL provided in $query. $params will be added as query string parameters to the Elasticsearch request URL.

Altis\Analytics\Utils\get_elasticsearch_url() : string

Get the Elasticsearch server URL.

Audience Functions

Altis\Analytics\Audiences\register_field( string $field, string $label, ?string $description = null )

Registers a field in the event record data to make it available in the audiences UI. Registered fields can be used to define audiences that can be used when querying analytics data.

$field is a field in the ElasticSearch index as described in the data structure, $label is a human readable name for the field, and $description is an optional extended description shown to users in the audience builder UI.

Altis\Analytics\Audiences\query_audiences( array $args = [] ) : array

Returns audience post objects sorted by priority. The optional $args array is passed to WP_Query().

Altis\Analytics\Audiences\build_audience_query( array $audience ) : array

Given an audience configuration array returns a PHP array that can be used to query events in ElasticSearch.

The $audience configuration should have the following shape:

$audience = [
    'include' => 'all' // <enum> all|any, determines if all groups should match.
    'groups' => [
        [
            'include' => // <enum> all|any
            'rules' => [
                [
                    'field' => 'endpoint.Demographic.Model', // <string> The field to query.
                    'operator' => '=', // <enum> =, !=, *=, ^=, !*, gte, lte, gt, lt
                    'value' => 'Chrome', // <string|number> The value to compare against.
                ],
                // ...
            ],
        ],
        // ... additional groups.
    ],
];

Helper Functions

Altis\Analytics\Utils\milliseconds() : integer

Get the current time since the unix epoch in milliseconds.

Altis\Analytics\Utils\merge_aggregations( array $current, array $new, string $bucket_type = '' ) : array

A utility function for merging aggregations returned by Elasticsearch queries. This is necessary to keep a store of your analytics data as Elasticsearch indexes can be rotated or lost.

The $bucket_type parameter should correspond to the type of aggregation you are merging data for. For simple results you can leave this out however for nested aggregations or to determine the bucket type automatically you should make your queries to ElasticSearch with the typed_keys query parameter. This helps the merge_aggregations() function perform more complex merges of nested aggregate data.

$result = Altis\Analytics\Utils\query( [
  // ... your query with aggregations ...
], [
  // Return aggregation type with keys.
  'typed_keys' => '',
] );

Filters

altis.analytics.data.endpoint <array>

Allows you to provide server-side data used to update the visitors associated endpoint with custom attributes and demographic data. Mostly useful for providing extra data for logged in sessions such as IP based location data.

altis.analytics.data.attributes <array>

Allows you to provide server-side data recorded for all events on the page. Useful if you need to query records based on the page context.

altis.analytics.data.metrics <array>

Similar to the altis.analytics.data.attributes filter but allows you to pass metrics based on server-side data.

altis.analytics.data <array>

Filters the entire array passed to the client side.

altis.analytics.elasticsearch.url <string>

Filters the Elasticsearch server URL.

altis.analytics.noop <bool>

Returning true from this filter will prevent any events or updated endpoint data from being sent to Pinpoint. The built in usage for this is to prevent logging events on page previews.

altis.analytics.max_index_age <int>

Filter the maximum number of days to keep real time stats available for. The default number of days is 14, after which data is removed. This is important for streamlining your user's privacy.

Insights and aggregated analytics data can be calculated, updated and stored in the database in cases where you wish to retain information for longer periods of time such as number of page views.

altis.analytics.audiences.limit <int>

Changes the default limit on the number of currently active audiences. The default is 20, sorted in order of priority.