getCurrentJourneyPopulation.html

<script runat="server">
Platform.Load("Core", "1");
try {

    //authenticate to get access token
    var authEndpoint = "https://mcxxxxxxxxxx.auth.marketingcloudapis.com/";      //provide auth endpoint
    var payload = {
        client_id: "xxxxxx",           //pass client id
        client_secret: "xxxxxx",       //pass client secret
        grant_type: "client_credentials",
        account_id: "12345"            //pass BU's MID
    };
    var url = authEndpoint + "/v2/token";
    var contentType = "application/json";

    var accessTokenRequest = HTTP.Post(url, contentType, Stringify(payload));
    if (accessTokenRequest.StatusCode == 200) {
        var tokenResponse = Platform.Function.ParseJSON(accessTokenRequest.Response[0]);
        var accessToken = tokenResponse.access_token
        var rest_instance_url = tokenResponse.rest_instance_url
    };

    //make api call to get journey details
    var headerNames = ["Authorization"];
    var headerValues = ["Bearer " + accessToken];
    var payload = '';

    var requestUrl = rest_instance_url + "interaction/v1/interactions/journeyhistory/search?$page=1&$pageSize=6000";

    var getJourneyHistory = HTTP.Post(requestUrl, contentType, payload, headerNames, headerValues);
    var response = Platform.Function.ParseJSON(getJourneyHistory.Response[0]);
    var items = response.items;

    //group by contact key and journey
    var keys = ["definitionId", "contactKey"],
        temp = {},
        endResult = [],
        i, j, k, key;

    for (i = 0; i < items.length; i++) {
        key = '';

        for (j = 0; j < keys.length; j++) {
            key += items[i][keys[j]] + '|';
        }
        if (temp[key] === undefined) temp[key] = [];
        temp[key].push({
            definitionId: items[i].definitionId,
            contactKey: items[i].contactKey,
            status: items[i].status,
            definitionName: items[i].definitionName
        });
    }

    //filter out contacts that failed or completed
    for (k in temp) {
        if (Stringify(temp[k]).indexOf("Failed") === -1 && Stringify(temp[k]).indexOf("Complete") === -1) {
            endResult.push({
                contactKey: temp[k][0].contactKey,
                definitionName: temp[k][0].definitionName
            });
        }

    }


    Write(Stringify(endResult));
} catch (error) {
    Write(Stringify(error));
}
</script>