Update integration tests build logic to account for multiple package versions (#2731)

* Update integration tests build logic to account for multiple package versions

* Throw exception if a package cannot be found for the required major version.

Author: Francisco-Gamino

build/BuildSteps.cs

@@ -65,7 +65,7 @@ public static void UpdatePackageVersionForIntegrationTests()
 
                 foreach (var package in packagesToUpdate)
                 {
-                    string packageInfo = Shell.GetOutput("NuGet", $"list {package} -Source {AzureFunctionsPreReleaseFeedName} -prerelease").Split(Environment.NewLine)[0];
+                    var packageInfo = GetLatestPackageInfo(name: package.Name, majorVersion: package.MajorVersion, source: AzureFunctionsPreReleaseFeedName);
 
                     if (string.IsNullOrEmpty(packageInfo))
                     {
@@ -624,9 +624,9 @@ public static void CreateIntegrationTestsBuildManifest()
             }
         }
 
-        private static List<string> GetV3PackageList()
+        private static List<Package> GetV3PackageList()
         {
-            const string CoreToolsBuildPackageList = "https://raw.githubusercontent.com/Azure/azure-functions-integration-tests/dev/integrationTestsBuild/V3/CoreToolsBuild.json";
+            const string CoreToolsBuildPackageList = "https://raw.githubusercontent.com/Azure/azure-functions-integration-tests/dev/integrationTestsBuild/V3/CoreToolsBuild2.json";
             Uri address = new Uri(CoreToolsBuildPackageList);
 
             string content = null;
@@ -640,7 +640,7 @@ private static List<string> GetV3PackageList()
                 throw new Exception($"Failed to download package list from {CoreToolsBuildPackageList}");
             }
 
-            var packageList = JsonConvert.DeserializeObject<List<string>>(content);
+            var packageList = JsonConvert.DeserializeObject<List<Package>>(content);
 
             return packageList;
         }
@@ -656,5 +656,32 @@ private static void RemoveLanguageWorkers(string outputPath)
                 }
             }
         }
+
+        private static string GetLatestPackageInfo(string name, string majorVersion, string source)
+        {
+            string includeAllVersion = !string.IsNullOrWhiteSpace(majorVersion) ? "-AllVersions" : string.Empty;
+            string packageInfo = Shell.GetOutput("NuGet", $"list {name} -Source {source} -prerelease {includeAllVersion}");
+
+            if (string.IsNullOrEmpty(packageInfo))
+            {
+                throw new Exception($"Failed to get {name} package information from {source}.");
+            }
+
+            if (!string.IsNullOrWhiteSpace(majorVersion))
+            {
+                foreach (var package in packageInfo.Split(Environment.NewLine))
+                {
+                    var version = package.Split(" ")[1];
+                    if (version.StartsWith(majorVersion))
+                    {
+                        return package;
+                    }
+                }
+
+                throw new Exception($"Failed to find {name} package for major version {majorVersion}.");
+            }
+
+            return packageInfo;
+        }
     }
 }

build/Package.cs

@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Build
+{
+    internal class Package
+    {
+        public string Name { get; set; }
+        public string MajorVersion { get; set; }
+    }
+}