Add a command to list functions in a function app. Closes #187 (#190)

src/Azure.Functions.Cli/Actions/AzureActions/ListFunctionsActions.cs

@@ -0,0 +1,68 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Azure.Functions.Cli.Arm;
+using Colors.Net;
+using static Azure.Functions.Cli.Common.OutputTheme;
+using Azure.Functions.Cli.Helpers;
+using System.Net.Http;
+using Azure.Functions.Cli.Common;
+using Azure.Functions.Cli.Interfaces;
+using Azure.Functions.Cli.Arm.Models;
+
+namespace Azure.Functions.Cli.Actions.AzureActions
+{
+    [Action(Name = "list-functions", Context = Context.Azure, SubContext = Context.FunctionApp, HelpText = "List functions in a given function app on azure.")]
+    internal class ListFunctionsActions : BaseFunctionAppAction
+    {
+        private readonly ISettings _settings;
+
+        public ListFunctionsActions(IArmManager armManager, ISettings settings) : base(armManager)
+        {
+            _settings = settings;
+        }
+
+        public override async Task RunAsync()
+        {
+            var functionApp = await _armManager.GetFunctionAppAsync(FunctionAppName);
+            if (functionApp != null)
+            {
+                await RetryHelper.Retry(async () =>
+                {
+                    using (var client = new HttpClient() { BaseAddress = new Uri($"https://{functionApp.ScmUri}") })
+                    {
+                        client.DefaultRequestHeaders.Authorization = await _armManager.GetAuthenticationHeader(_settings.CurrentSubscription);
+
+                        var response = await client.GetAsync(new Uri("api/functions", UriKind.Relative));
+
+                        if (!response.IsSuccessStatusCode)
+                        {
+                            throw new CliException($"Error trying to retrieve list of functions ({response.StatusCode}).");
+                        }
+
+                        var functions = await response.Content.ReadAsAsync<IEnumerable<FunctionInfo>>();
+
+                        ColoredConsole.WriteLine(TitleColor($"Functions in {FunctionAppName}:"));
+                        foreach (var function in functions)
+                        {
+                            var trigger = function
+                                .Config?["bindings"]
+                                ?.FirstOrDefault(o => o["type"]?.ToString().IndexOf("Trigger", StringComparison.OrdinalIgnoreCase) != -1)
+                                ?["type"];
+
+                            trigger = trigger ?? "No Trigger Found";
+
+                            ColoredConsole.WriteLine($"    {function.Name} - [{VerboseColor(trigger.ToString())}]");
+                        }
+                    }
+                }, 2);
+            }
+            else
+            {
+                ColoredConsole.Error.WriteLine(ErrorColor($"Can't find function app by name {FunctionAppName}"));
+            }
+        }
+    }
+}

src/Azure.Functions.Cli/Arm/Models/FunctionInfo.cs

@@ -0,0 +1,41 @@
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+using System;
+using System.Collections.Generic;
+
+namespace Azure.Functions.Cli.Arm.Models
+{
+    // https://github.com/projectkudu/kudu/blob/master/Kudu.Contracts/Functions/FunctionEnvelope.cs
+    internal class FunctionInfo
+    {
+        [JsonProperty(PropertyName = "name")]
+        public string Name { get; set; }
+
+        [JsonProperty(PropertyName = "function_app_id")]
+        public string FunctionAppId { get; set; }
+
+        [JsonProperty(PropertyName = "script_root_path_href")]
+        public Uri ScriptRootPathHref { get; set; }
+
+        [JsonProperty(PropertyName = "script_href")]
+        public Uri ScriptHref { get; set; }
+
+        [JsonProperty(PropertyName = "config_href")]
+        public Uri ConfigHref { get; set; }
+
+        [JsonProperty(PropertyName = "secrets_file_href")]
+        public Uri SecretsFileHref { get; set; }
+
+        [JsonProperty(PropertyName = "href")]
+        public Uri Href { get; set; }
+
+        [JsonProperty(PropertyName = "config")]
+        public JObject Config { get; set; }
+
+        [JsonProperty(PropertyName = "files")]
+        public IDictionary<string, string> Files { get; set; }
+
+        [JsonProperty(PropertyName = "test_data")]
+        public string TestData { get; set; }
+    }
+}

src/Azure.Functions.Cli/Azure.Functions.Cli.csproj

@@ -579,6 +579,7 @@
     <Compile Include="Actions\AzureActions\GetPublishUsernameAction.cs" />
     <Compile Include="Actions\AzureActions\ListAzureAccountsAction.cs" />
     <Compile Include="Actions\AzureActions\ListFunctionAppsAction.cs" />
+    <Compile Include="Actions\AzureActions\ListFunctionsActions.cs" />
     <Compile Include="Actions\AzureActions\ListStorageAction.cs" />
     <Compile Include="Actions\AzureActions\LoginAction.cs" />
     <Compile Include="Actions\AzureActions\LogoutAction.cs" />
@@ -619,6 +620,7 @@
     <Compile Include="Arm\Models\ArmWebsitePublishingCredentials.cs" />
     <Compile Include="Arm\Models\ArmWrapper.cs" />
     <Compile Include="Arm\Models\BaseResource.cs" />
+    <Compile Include="Arm\Models\FunctionInfo.cs" />
     <Compile Include="Arm\Models\ResourceGroup.cs" />
     <Compile Include="Arm\Models\Site.cs" />
     <Compile Include="Arm\Models\StorageAccount.cs" />