Adding roslyn to automatic dependency flow through maestro.

Author: Livar Cunha

build_projects/update-dependencies/Config.cs

@@ -39,12 +39,15 @@ public class Config
 
         private Lazy<string> _dotNetVersionUrl = new Lazy<string>(() => GetEnvironmentVariable("DOTNET_VERSION_URL", "https://raw.githubusercontent.com/dotnet/versions/master/build-info"));
         private Lazy<string> _coreSetupVersionFragment = new Lazy<string>(() => GetEnvironmentVariable("CORESETUP_VERSION_FRAGMENT", GetDefaultCoreSetupVersionFragment()));
+
+        private Lazy<string> _roslynVersionFragment = new Lazy<string>(() => GetEnvironmentVariable("ROSLYN_VERSION_FRAGMENT"));
         private Lazy<string> _gitHubUpstreamOwner = new Lazy<string>(() => GetEnvironmentVariable("GITHUB_UPSTREAM_OWNER", "dotnet"));
         private Lazy<string> _gitHubProject = new Lazy<string>(() => GetEnvironmentVariable("GITHUB_PROJECT", "cli"));
         private Lazy<string> _gitHubUpstreamBranch = new Lazy<string>(() => GetEnvironmentVariable("GITHUB_UPSTREAM_BRANCH", GetDefaultUpstreamBranch()));
         private Lazy<string[]> _gitHubPullRequestNotifications = new Lazy<string[]>(() =>
                                                 GetEnvironmentVariable("GITHUB_PULL_REQUEST_NOTIFICATIONS", "")
                                                     .Split(new[] { ';' }, StringSplitOptions.RemoveEmptyEntries));
+
         private Config()
         {
         }
@@ -54,6 +57,8 @@ private Config()
         public string Password => _password.Value;
         public string DotNetVersionUrl => _dotNetVersionUrl.Value;
         public string CoreSetupVersionFragment => _coreSetupVersionFragment.Value;
+        public string RoslynVersionFragment => _roslynVersionFragment.Value;
+        public bool HasRoslynVersionFragment => !string.IsNullOrEmpty(RoslynVersionFragment);
         public string GitHubUpstreamOwner => _gitHubUpstreamOwner.Value;
         public string GitHubProject => _gitHubProject.Value;
         public string GitHubUpstreamBranch => _gitHubUpstreamBranch.Value;

build_projects/update-dependencies/Program.cs

@@ -28,6 +28,11 @@ public static void Main(string[] args)
 
             buildInfos.Add(GetBuildInfo("CoreSetup", s_config.CoreSetupVersionFragment, fetchLatestReleaseFile: false));
 
+            if (s_config.HasRoslynVersionFragment)
+            {
+                buildInfos.Add(GetBuildInfo("Roslyn", s_config.RoslynVersionFragment, fetchLatestReleaseFile: false));
+            }
+
             IEnumerable<IDependencyUpdater> updaters = GetUpdaters();
             var dependencyBuildInfos = buildInfos.Select(buildInfo =>
                 new BuildDependencyInfo(
@@ -88,6 +93,11 @@ private static IEnumerable<IDependencyUpdater> GetUpdaters()
             yield return CreateRegexUpdater(dependencyVersionsPath, "MicrosoftNETCoreAppPackageVersion", "Microsoft.NETCore.App");
             yield return CreateRegexUpdater(dependencyVersionsPath, "MicrosoftDotNetPlatformAbstractionsPackageVersion", "Microsoft.DotNet.PlatformAbstractions");
             yield return CreateRegexUpdater(dependencyVersionsPath, "MicrosoftExtensionsDependencyModelPackageVersion", "Microsoft.Extensions.DependencyModel");
+
+            if (s_config.HasRoslynVersionFragment)
+            {
+                yield return CreateRegexUpdater(dependencyVersionsPath, "MicrosoftCodeAnalysisCSharpPackageVersion", "Microsoft.CodeAnalysis.CSharp");
+            }
         }
 
         private static IDependencyUpdater CreateRegexUpdater(string repoRelativePath, string propertyName, string packageId)