How to format NewRelic NerdGraph API calls from java/groovy client? - graphql

Question

I'm trying to extract some metric data from NewRelic using NerdGraph API. It works perfectly while using curl, but I'm having problems with calling it from groovy/java client.
NerdGraph API request is as follows:
{
actor {
entitySearch(query: "name like 'my-service-name'") {
results {
entities {
tags {
key
values
}
guid
}
}
}
}
}
The following curl call works fine:
curl --location --request POST 'https://api.newrelic.com/graphql' --header 'API-Key: MY-API-KEY' --header 'Content-Type: application/json' --data-raw '{"query":"{\n actor {\n entitySearch(query: \"name like '\''my-service-name'\''\") {\n results {\n entities {\n tags {\n key\n values\n }\n guid\n }\n }\n }\n }\n}"}'
In my groovy code I'm trying to instantiate request like this:
String request = '''
{ "query": "{
actor {
entitySearch(query: "name like 'my-service-name'") {
results {
entities {
tags {
key
values
}
guid
}
}
}
}
}"
}
'''
..or this:
String request = '{"query":"{\n actor {\n entitySearch(query: \"name like \'my-service-name\'\") {\n results {\n entities {\n tags {\n key\n values\n }\n guid\n }\n }\n }\n }\n}"}'
Neither works. I'm getting https://api.newrelic.com/graphql -> 400 : Bad Request
How should I escape special characters (quote and double quote) to make it work?

Answer 1

I had a similar problem in C# and came to this question looking for answers. Hopefully you've found a solution, but for me the key was sending the data as a byte[] as opposed to a string...
using (var httpClient = new HttpClient())
{
using (var request = new HttpRequestMessage(new HttpMethod("POST"), "https://api.newrelic.com/graphql"))
{
string payload = #"{actor {account(id: NEWRELICACCOUNTID) {nrql(query: ""SELECT rate(count(*), 1 hour) AS 'RequestsPerHour' FROM Transaction TIMESERIES 1 hour FACET `Channel` EXTRAPOLATE SINCE 1 weeks ago"") {results}}}}";
request.Headers.TryAddWithoutValidation("API-Key", "MYAPIKEY");
request.Content = new ByteArrayContent(encoding.GetBytes(payload));
var response = await httpClient.SendAsync(request);
}
}
Hope this helps you or someone else!