Add seqcli setting names|show|set|clear commands

src/SeqCli/Apps/Definitions/AppDefinition.cs

@@ -12,8 +12,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#nullable enable
-
 using System.Collections.Generic;
 using Newtonsoft.Json;
 

src/SeqCli/Apps/Definitions/AppMetadataReader.cs

@@ -19,8 +19,6 @@
 using System.Reflection;
 using Seq.Apps;
 
-#nullable  enable
-
 namespace SeqCli.Apps.Definitions;
 
 static class AppMetadataReader

src/SeqCli/Apps/Definitions/AppSettingDefinition.cs

@@ -14,8 +14,6 @@
 
 using Newtonsoft.Json;
 
-#nullable enable
-
 namespace SeqCli.Apps.Definitions;
 
 // ReSharper disable all

src/SeqCli/Cli/CommandLineHost.cs

@@ -21,8 +21,6 @@
 using Serilog.Core;
 using Serilog.Events;
 
-#nullable enable
-
 namespace SeqCli.Cli;
 
 class CommandLineHost

src/SeqCli/Cli/Commands/App/InstallCommand.cs

@@ -22,8 +22,6 @@
 using SeqCli.Util;
 using Serilog;
 
-#nullable enable
-
 namespace SeqCli.Cli.Commands.App;
 
 [Command("app", "install", "Install an app package",

src/SeqCli/Cli/Commands/App/UpdateCommand.cs

@@ -21,8 +21,6 @@
 using SeqCli.Util;
 using Serilog;
 
-#nullable enable
-
 namespace SeqCli.Cli.Commands.App;
 
 [Command("app", "update", "Update an installed app package",

src/SeqCli/Cli/Commands/Bench/BenchCase.cs

@@ -12,8 +12,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#nullable enable
-
 namespace SeqCli.Cli.Commands.Bench;
 
 // ReSharper disable ClassNeverInstantiated.Global AutoPropertyCanBeMadeGetOnly.Global UnusedAutoPropertyAccessor.Global

src/SeqCli/Cli/Commands/Bench/BenchCaseTimings.cs

@@ -12,7 +12,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#nullable enable
 using System;
 using System.Collections.Generic;
 using System.Linq;

src/SeqCli/Cli/Commands/Bench/BenchCasesCollection.cs

@@ -12,7 +12,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#nullable enable
 using System.Collections.Generic;
 
 namespace SeqCli.Cli.Commands.Bench;

src/SeqCli/Cli/Commands/Bench/BenchCommand.cs

@@ -12,8 +12,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#nullable enable
-
 using System;
 using System.IO;
 using System.Linq;

src/SeqCli/Cli/Commands/License/ApplyCommand.cs

@@ -9,8 +9,6 @@
 
 // ReSharper disable once UnusedType.Global
 
-#nullable enable
-
 namespace  SeqCli.Cli.Commands.License;
 
 [Command("license", "apply", "Apply a license to the Seq server",

src/SeqCli/Cli/Commands/Node/DemoteCommand.cs

@@ -1,13 +1,25 @@
-using System;
+// Copyright Datalust Pty Ltd and Contributors
+//
+// 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.
+
+using System;
 using System.Linq;
 using System.Threading.Tasks;
 using Seq.Api.Model.Cluster;
 using SeqCli.Cli.Features;
 using SeqCli.Connection;
 using Serilog;
 
-#nullable enable
-
 namespace SeqCli.Cli.Commands.Node;
 
 [Command("node", "demote", "Begin demotion of the current leader node", 

src/SeqCli/Cli/Commands/Node/HealthCommand.cs

@@ -1,4 +1,18 @@
-using System;
+// Copyright Datalust Pty Ltd and Contributors
+//
+// 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.
+
+using System;
 using System.Globalization;
 using System.Linq;
 using System.Threading.Tasks;
@@ -7,8 +21,6 @@
 using SeqCli.Util;
 using Serilog;
 
-#nullable enable
-
 namespace SeqCli.Cli.Commands.Node;
 
 [Command("node", "health",

src/SeqCli/Cli/Commands/Node/ListCommand.cs

@@ -19,8 +19,6 @@
 using SeqCli.Config;
 using SeqCli.Connection;
 
-#nullable enable
-
 namespace SeqCli.Cli.Commands.Node;
 
 [Command("node", "list", "List nodes in the Seq cluster",

src/SeqCli/Cli/Commands/SearchCommand.cs

@@ -28,8 +28,6 @@
 using Serilog.Parsing;
 // ReSharper disable UnusedType.Global
 
-#nullable enable
-
 namespace SeqCli.Cli.Commands;
 
 [Command("search", "Retrieve log events that match a given filter",

src/SeqCli/Cli/Commands/Settings/ClearCommand.cs

@@ -0,0 +1,48 @@
+// Copyright Datalust Pty Ltd and Contributors
+//
+// 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.
+
+using System;
+using System.Threading.Tasks;
+using SeqCli.Cli.Features;
+using SeqCli.Connection;
+
+namespace SeqCli.Cli.Commands.Settings;
+
+[Command("setting", "clear", "Clear a runtime-configurable server setting")]
+class ClearCommand: Command
+{
+    readonly SeqConnectionFactory _connectionFactory;
+
+    readonly ConnectionFeature _connection;
+    readonly SettingNameFeature _name;
+
+    public ClearCommand(SeqConnectionFactory connectionFactory)
+    {
+        _connectionFactory = connectionFactory ?? throw new ArgumentNullException(nameof(connectionFactory));
+
+        _name = Enable<SettingNameFeature>();
+        _connection = Enable<ConnectionFeature>();
+    }
+
+    protected override async Task<int> Run()
+    {
+        var connection = _connectionFactory.Connect(_connection);
+
+        var setting = await connection.Settings.FindNamedAsync(_name.Name);
+        setting.Value = null;
+        await connection.Settings.UpdateAsync(setting);
+
+        return 0;
+    }
+}

src/SeqCli/Cli/Commands/Settings/NamesCommand.cs

@@ -0,0 +1,34 @@
+// Copyright Datalust Pty Ltd and Contributors
+//
+// 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.
+
+using System;
+using System.Linq;
+using System.Threading.Tasks;
+using Seq.Api.Model.Settings;
+
+namespace SeqCli.Cli.Commands.Settings;
+
+[Command("setting", "names", "Print the names of all supported settings")]
+class NamesCommand: Command
+{
+    protected override Task<int> Run(string[] unrecognized)
+    {
+        foreach (var name in Enum.GetNames(typeof(SettingName)).Order())
+        {
+            Console.WriteLine(name);
+        }
+
+        return Task.FromResult(0);
+    }
+}

src/SeqCli/Cli/Commands/Settings/SetCommand.cs

@@ -0,0 +1,80 @@
+// Copyright Datalust Pty Ltd and Contributors
+//
+// 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.
+
+using System;
+using System.Threading.Tasks;
+using SeqCli.Cli.Features;
+using SeqCli.Connection;
+using Serilog;
+
+namespace SeqCli.Cli.Commands.Settings;
+
+[Command("setting", "set", "Change a runtime-configurable server setting")]
+class SetCommand: Command
+{
+    readonly SeqConnectionFactory _connectionFactory;
+
+    readonly ConnectionFeature _connection;
+    readonly SettingNameFeature _name;
+
+    string? _value;
+    bool _valueSpecified, _readValueFromStdin;
+
+    public SetCommand(SeqConnectionFactory connectionFactory)
+    {
+        _connectionFactory = connectionFactory ?? throw new ArgumentNullException(nameof(connectionFactory));
+
+        _name = Enable<SettingNameFeature>();
+
+        Options.Add("v|value=",
+            "The setting value, comma-separated if multiple values are accepted",
+            v =>
+            {
+                // Not normalized; some settings might include leading/trailing whitespace.
+                _valueSpecified = true;
+                _value = v;
+            });
+
+        Options.Add("value-stdin",
+            "Read the value from `STDIN`",
+            _ => _readValueFromStdin = true);
+
+        _connection = Enable<ConnectionFeature>();
+    }
+
+    protected override async Task<int> Run()
+    {
+        if (!_valueSpecified && !_readValueFromStdin)
+        {
+            Log.Error("A value must be supplied with either `--value=VALUE` or `--value-stdin`.");
+            return 1;
+        }
+
+        var connection = _connectionFactory.Connect(_connection);
+
+        var setting = await connection.Settings.FindNamedAsync(_name.Name);
+        setting.Value = ReadValue();
+        await connection.Settings.UpdateAsync(setting);
+
+        return 0;
+    }
+
+    string? ReadValue()
+    {
+        if (_readValueFromStdin)
+            return Console.In.ReadToEnd().TrimEnd('\r', '\n');
+
+        return _value;
+    }
+}

src/SeqCli/Cli/Commands/Settings/ShowCommand.cs

@@ -0,0 +1,52 @@
+// Copyright Datalust Pty Ltd and Contributors
+//
+// 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.
+
+using System;
+using System.Globalization;
+using System.Threading.Tasks;
+using SeqCli.Cli.Features;
+using SeqCli.Connection;
+
+namespace SeqCli.Cli.Commands.Settings;
+
+[Command("setting", "show", "Print the current value of a runtime-configurable server setting")]
+class ShowCommand: Command
+{
+    readonly SeqConnectionFactory _connectionFactory;
+
+    readonly ConnectionFeature _connection;
+    readonly SettingNameFeature _name;
+
+    public ShowCommand(SeqConnectionFactory connectionFactory)
+    {
+        _connectionFactory = connectionFactory ?? throw new ArgumentNullException(nameof(connectionFactory));
+
+        _name = Enable<SettingNameFeature>();
+        _connection = Enable<ConnectionFeature>();
+    }
+
+    protected override async Task<int> Run()
+    {
+        var connection = _connectionFactory.Connect(_connection);
+
+        var setting = await connection.Settings.FindNamedAsync(_name.Name);
+
+        if (setting.Value != null)
+        {
+            Console.Write(setting.Value is IFormattable f ? f.ToString(null, CultureInfo.InvariantCulture) : setting.Value.ToString());
+        }
+
+        return 0;
+    }
+}