How to call two rest APIs in a Azure Function? - azure

Question

I'm trying to call two rest APIs (Azure Web Service APIs) in a Azure Function. I have written the below code but When I try to run it, the first API is only getting executed but the second one isn't.
The Logic should be like if the first API gets a response status as 200 Ok then only, it should proceed to call the next API.
namespace FunctionChainingApp
{
public static class FunctionChaining
{
[FunctionName("FunctionChaining")]
public static async Task<HttpResponseMessage> Run([HttpTrigger(AuthorizationLevel.Anonymous, "get", "post", Route = null)]HttpRequestMessage req, ILogger log)
{
log.LogInformation("C# HTTP trigger function processed a request.");
try
{
// Call Your API
HttpClient abcdeClient = new HttpClient();
HttpRequestMessage abcdeRequest = new HttpRequestMessage(HttpMethod.Get, string.Format("https://abcde.azurewebsites.net/api/abcde/GetabcdeDetails"));
//Read Server Response
HttpResponseMessage abcdeResponse = await abcdeClient.SendAsync(abcdeRequest);
bool abcdeStatusCode200 = await abcdeResponse.Content.ReadAsAsync<bool>();
if (abcdeStatusCode200 == true)
{
// Call Your API
HttpClient vwxyzClient = new HttpClient();
HttpRequestMessage vwxyzRequest = new HttpRequestMessage(HttpMethod.Get, string.Format("https://vwxyz.azurewebsites.net/api/vwxyz/GetvwxyzDefaultDetails"));
//Read Server Response
HttpResponseMessage vwxyzResponse = await vwxyzClient.SendAsync(vwxyzRequest);
bool vwxyzStatusCode200 = await vwxyzResponse.Content.ReadAsAsync<bool>();
}
else
{
// Call Your API
abcdeRequest = new HttpRequestMessage(HttpMethod.Get, string.Format("https://abcde.azurewebsites.net/api/abcde/GetabcdeDetails"));
}
return req.CreateResponse(HttpStatusCode.OK);
}
catch (Exception ex)
{
return req.CreateResponse(HttpStatusCode.OK, "The Called Scheduler Failed : {0}", string.Format(ex.Message));
}
}
}
public class ResponseModel
{
public bool abcdeStatusCode200 { get; set; }
public bool vwxyzStatusCode200 { get; set; }
}
}

Answer 1

You need to separate these two functions and call them within DurableOrchestrationClient
var output = new List<string>();
output.Add(await context.CallActivityAsync<string>("CallAPI1", "test2019"));
output.Add(await context.CallActivityAsync<string>("CallAPI2", "test2"));
EXAMPLE