Getting Started: Programmatically connect to CDISC Library API

import requests
import json

baseURL = "https://library.cdisc.org/api"
queryEndpoint = "/mdr/products"
queryPath = "/Terminology"

# fictitious API key used, real one can be obtained through API Management Developer Portal
req = requests.get(baseURL + queryEndpoint + queryPath, headers={'api-key': 'abcdef0123456789abcdef0123456789', 'Accept': 'application/json'})

# fictitious API key used, real one can be obtained through API Management Developer Portal
req = requests.get(baseURL + queryEndpoint + queryPath, headers={'api-key': 'abcdef0123456789abcdef0123456789', 'Accept': 'application/xml'})

filename response TEMP;
 
proc http
    url="https://library.cdisc.org/api/mdr/products"
    out=response;
    headers
        /* fictitious API key used, real one can be obtained through API Management Developer Portal */
        /* change to "application/xml" for response in XML format */
        "api-key"="abcdef0123456789abcdef0123456789"
        "Accept"="application/json";
run;
 
data _null_;
    infile response;
    input;
    put _infile_;
run;

/*
* Copyright 2020 Jozef Aerts.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*      http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

package com.xml4pharma.cdisclibrary.test;

import javax.ws.rs.client.*; // Client and ClientBuilder - javax.ws.rs-api-2.1.jar
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;

// Jersey-2 imports
import org.glassfish.jersey.client.*;

public class BasicCDISCLibraryClient {

    private String base = "https://library.cdisc.org/api"; // the base of the service
    private String apiKey = "xxxxxxxxxxxxxxxxxxxxxx"; // your API key

    private Client client;

    public BasicCDISCLibraryClient() {
        ClientConfig clientConfig = new ClientConfig();
        // see e.g. https://jersey.github.io/documentation/latest/logging_chapter.html
        // for how to add logging
        // clientConfig.property(LoggingFeature.LOGGING_FEATURE_VERBOSITY_CLIENT,
        // LoggingFeature.Verbosity.PAYLOAD_ANY);
        client = ClientBuilder.newClient(clientConfig);
    }

    // Get the properties of the provided SDTM-IG variable in the provided domain
    // and for the provided IG version
    public String getSDTMVariableProperties(String igVersion, String domain, String variable) {
        WebTarget webTarget = client.target(base).path("mdr").path("sdtmig").path(igVersion).path("datasets")
                .path(domain).path("variables").path(variable);
        Invocation.Builder invocationBuilder = webTarget.request(MediaType.APPLICATION_XML);
        // Response requires javax.annotation-api-1.2.jar, hk2-api-2.5.0-b42.jar,
        // hk2-locator-2.5.0-b42.jar, hk2-utils-2.5.0-b42.jar
        // and javax.inject-1.jar, javax.inject-2.5.0-b42.jar
        // and jersey-media-json-binding.jar (when requesting JSON response)
        // from the Jersey-2 library - see https://jersey.github.io/
        Response response = invocationBuilder.header("api-key", apiKey).get();
        System.out.println("HTTP Response Status = " + response.getStatus());
        String xml = response.readEntity(String.class);
        // System.out.println(xml);
        return xml;
    }

    public static void main(String[] args) {
        BasicCDISCLibraryClient cl = new BasicCDISCLibraryClient();
        String response = cl.getSDTMVariableProperties("3-3", "PE", "PESTRESC");
        System.out.println("Response = " + response);
    }

}

library(httr)
library(jsonlite)

resp <-
  GET(
    "https://library.cdisc.org/api/mdr/products/Terminology",
    # fictitious API key used, real one can be obtained through API Management Developer Portal
    add_headers("api-key" = "abcdef0123456789abcdef0123456789")
  )

respBody <- content(resp, "text")
respBody_json <- fromJSON(respBody)

View(respBody_json)

(: Copyright 2020 Jozef Aerts.
Licensed under the Apache License, Version 2.0 (the "License");
You may not use this file except in compliance with the License.
You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, 
software distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and limitations under the License.
:)


(: Example XQuery calling the CDISC Library using the API :)
(: apikey is passed from external :)
declare variable $apikey external;

(: The query itself, getting the SEND-CT version 2018-09-28 :)
let $query := 'https://library.cdisc.org/api/mdr/ct/packages/sendct-2018-09-28'

(: The XQuery standard does not natively support basic authentication.
The EXPath extension 'http-client' ( see http://expath.org/modules/http-client/) however does support it.
Some free/open source libraries like BaseX do support this 'http-client' extension.
So you might want to use the BaseX library to run such queries e.g. from Java programs.
:)
let $resp := http:send-request(
  <http:request method='get' href='{$query}'>
   	<http:header name="api-key" value="{$apikey}"/>  
  </http:request>)
return <test>{$resp/json}</test> 

/*
* Copyright 2020 Jozef Aerts.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*      http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

package org.basex.examples.api;

import java.io.*;

import org.basex.core.BaseXException;
import org.basex.core.Context;
import org.basex.core.cmd.XQuery;

public class BaseXCDISCLibraryXQuery {

    // For running the code, you will need the BaseX Java library, e.g.
    // "BaseX911.jar"
    private Context context;
    private String apiKey = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";

    // CDISC Library XQuery
    private static String cdiscLibraryXQueryString = "(: apikey is  passed from external :)\r\n"
            + "declare variable $apikey external; \r\n" + "let $response := http:send-request(\r\n"
            + "<http:request method='get' href='https://api.library.cdisc.org/api/mdr/products'>\r\n"
            + "   	<http:header name=\"api-key\" value=\"{$apikey}\"/>  \r\n" + "</http:request>)\r\n"
            + "return $response";

    public BaseXCDISCLibraryXQuery() {
        context = new Context();
    }

    public void runXQuery() {
        XQuery xq = new XQuery(cdiscLibraryXQueryString);
        xq.bind("apikey", apiKey);
        try {
            String response = xq.execute(context);
            // as XQuery is for XML, the response will be an XML representation of the
            // returned JSON
            System.out.println("response = \n" + response);
        } catch (BaseXException e) {
            e.printStackTrace();
        }
    }

    public String readCdiscLibraryXQueryFormFile(String fileLocation) {
        String query = "";
        BufferedReader reader;
        try {
            reader = new BufferedReader(new FileReader(fileLocation));
        } catch (FileNotFoundException e1) {
            e1.printStackTrace();
            return null;
        }
        StringBuilder stringBuilder = new StringBuilder();
        String line = null;
        String ls = System.getProperty("line.separator");
        try {
            while ((line = reader.readLine()) != null) {
                stringBuilder.append(line);
                stringBuilder.append(ls);
            }
            reader.close();
        } catch (IOException e) {
            e.printStackTrace();
            return null;
        }
        // return as a single string
        query = stringBuilder.toString();
        System.out.println("CDISC Library XQuery was read from file = " + fileLocation);
        return query;
    }

    public static void main(String[] args) {
        BaseXCDISCLibraryXQuery b = new BaseXCDISCLibraryXQuery();
        // uncomment end edit the following line for reading the XQuery from file
        // cdiscLibraryXQueryString =
        // b.readCdiscLibraryXQueryFormFile("C:\\baseX\\XQueries\\CDISC_Library_XQuery.xq");
        b.runXQuery();
    }

}