Initial switch to breakpoint APIs

src/PowerShellEditorServices/Server/PsesServiceCollectionExtensions.cs

@@ -64,6 +64,7 @@ public static IServiceCollection AddPsesDebugServices(
                 .AddSingleton(languageServiceProvider.GetService<RemoteFileManagerService>())
                 .AddSingleton<PsesDebugServer>(psesDebugServer)
                 .AddSingleton<DebugService>()
+                .AddSingleton<BreakpointService>()
                 .AddSingleton<DebugStateService>(new DebugStateService
                 {
                      OwnsEditorSession = useTempSession

src/PowerShellEditorServices/Services/DebugAdapter/BreakpointService.cs

@@ -0,0 +1,313 @@
+//
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+//
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Management.Automation;
+using System.Threading.Tasks;
+using Microsoft.Extensions.Logging;
+using Microsoft.PowerShell.EditorServices.Logging;
+using Microsoft.PowerShell.EditorServices.Services.DebugAdapter;
+
+namespace Microsoft.PowerShell.EditorServices.Services
+{
+    internal class BreakpointService
+    {
+        private readonly ILogger<BreakpointService> _logger;
+        private readonly PowerShellContextService _powerShellContextService;
+        private readonly DebugStateService _debugStateService;
+
+        // TODO: This needs to be managed per nested session
+        internal readonly Dictionary<string, HashSet<Breakpoint>> BreakpointsPerFile =
+            new Dictionary<string, HashSet<Breakpoint>>();
+
+        internal readonly HashSet<Breakpoint> CommandBreakpoints =
+            new HashSet<Breakpoint>();
+
+        public BreakpointService(
+            ILoggerFactory factory,
+            PowerShellContextService powerShellContextService,
+            DebugStateService debugStateService)
+        {
+            _logger = factory.CreateLogger<BreakpointService>();
+            _powerShellContextService = powerShellContextService;
+            _debugStateService = debugStateService;
+        }
+
+        public async Task<List<Breakpoint>> GetBreakpointsAsync()
+        {
+            if (BreakpointApiUtils.SupportsBreakpointApis)
+            {
+                return BreakpointApiUtils.GetBreakpoints(
+                    _powerShellContextService.CurrentRunspace.Runspace.Debugger,
+                    _debugStateService.RunspaceId);
+            }
+
+            // Legacy behavior
+            PSCommand psCommand = new PSCommand();
+            psCommand.AddCommand(@"Microsoft.PowerShell.Utility\Get-PSBreakpoint");
+            IEnumerable<Breakpoint> breakpoints = await _powerShellContextService.ExecuteCommandAsync<Breakpoint>(psCommand);
+            return breakpoints.ToList();
+        }
+
+        public async Task<IEnumerable<BreakpointDetails>> SetBreakpointsAsync(string escapedScriptPath, IEnumerable<BreakpointDetails> breakpoints)
+        {
+            if (BreakpointApiUtils.SupportsBreakpointApis)
+            {
+                foreach (BreakpointDetails breakpointDetails in breakpoints)
+                {
+                    try
+                    {
+                        BreakpointApiUtils.SetBreakpoint(_powerShellContextService.CurrentRunspace.Runspace.Debugger, breakpointDetails, _debugStateService.RunspaceId);
+
+                    }
+                    catch(InvalidOperationException e)
+                    {
+                        breakpointDetails.Message = e.Message;
+                        breakpointDetails.Verified = false;
+                    }
+                }
+
+                return breakpoints;
+            }
+
+            // Legacy behavior
+            PSCommand psCommand = null;
+            List<BreakpointDetails> configuredBreakpoints = new List<BreakpointDetails>();
+            foreach (BreakpointDetails breakpoint in breakpoints)
+            {
+                ScriptBlock actionScriptBlock = null;
+
+                // Check if this is a "conditional" line breakpoint.
+                if (!string.IsNullOrWhiteSpace(breakpoint.Condition) ||
+                    !string.IsNullOrWhiteSpace(breakpoint.HitCondition) ||
+                    !string.IsNullOrWhiteSpace(breakpoint.LogMessage))
+                {
+                    actionScriptBlock = BreakpointApiUtils.GetBreakpointActionScriptBlock(
+                        breakpoint.Condition,
+                        breakpoint.HitCondition,
+                        breakpoint.LogMessage,
+                        out string errorMessage);
+
+                    if (!string.IsNullOrEmpty(errorMessage))
+                    {
+                        breakpoint.Verified = false;
+                        breakpoint.Message = errorMessage;
+                        configuredBreakpoints.Add(breakpoint);
+                        continue;
+                    }
+                }
+
+                // On first iteration psCommand will be null, every subsequent
+                // iteration will need to start a new statement.
+                if (psCommand == null)
+                {
+                    psCommand = new PSCommand();
+                }
+                else
+                {
+                    psCommand.AddStatement();
+                }
+
+                psCommand
+                    .AddCommand(@"Microsoft.PowerShell.Utility\Set-PSBreakpoint")
+                    .AddParameter("Script", escapedScriptPath)
+                    .AddParameter("Line", breakpoint.LineNumber);
+
+                // Check if the user has specified the column number for the breakpoint.
+                if (breakpoint.ColumnNumber.HasValue && breakpoint.ColumnNumber.Value > 0)
+                {
+                    // It bums me out that PowerShell will silently ignore a breakpoint
+                    // where either the line or the column is invalid.  I'd rather have an
+                    // error or warning message I could relay back to the client.
+                    psCommand.AddParameter("Column", breakpoint.ColumnNumber.Value);
+                }
+
+                if (actionScriptBlock != null)
+                {
+                    psCommand.AddParameter("Action", actionScriptBlock);
+                }
+            }
+
+            // If no PSCommand was created then there are no breakpoints to set.
+            if (psCommand != null)
+            {
+                IEnumerable<Breakpoint> setBreakpoints =
+                    await _powerShellContextService.ExecuteCommandAsync<Breakpoint>(psCommand);
+                configuredBreakpoints.AddRange(
+                    setBreakpoints.Select(BreakpointDetails.Create));
+            }
+
+            return configuredBreakpoints;
+        }
+
+        public async Task<IEnumerable<CommandBreakpointDetails>> SetCommandBreakpoints(IEnumerable<CommandBreakpointDetails> breakpoints)
+        {
+            if (BreakpointApiUtils.SupportsBreakpointApis)
+            {
+                foreach (CommandBreakpointDetails commandBreakpointDetails in breakpoints)
+                {
+                    try
+                    {
+                        BreakpointApiUtils.SetBreakpoint(_powerShellContextService.CurrentRunspace.Runspace.Debugger, commandBreakpointDetails, _debugStateService.RunspaceId);
+                    }
+                    catch(InvalidOperationException e)
+                    {
+                        commandBreakpointDetails.Message = e.Message;
+                        commandBreakpointDetails.Verified = false;
+                    }
+                }
+
+                return breakpoints;
+            }
+
+            // Legacy behavior
+            PSCommand psCommand = null;
+            List<CommandBreakpointDetails> configuredBreakpoints = new List<CommandBreakpointDetails>();
+            foreach (CommandBreakpointDetails breakpoint in breakpoints)
+            {
+                // On first iteration psCommand will be null, every subsequent
+                // iteration will need to start a new statement.
+                if (psCommand == null)
+                {
+                    psCommand = new PSCommand();
+                }
+                else
+                {
+                    psCommand.AddStatement();
+                }
+
+                psCommand
+                    .AddCommand(@"Microsoft.PowerShell.Utility\Set-PSBreakpoint")
+                    .AddParameter("Command", breakpoint.Name);
+
+                // Check if this is a "conditional" line breakpoint.
+                if (!string.IsNullOrWhiteSpace(breakpoint.Condition) ||
+                    !string.IsNullOrWhiteSpace(breakpoint.HitCondition))
+                {
+                    ScriptBlock actionScriptBlock =
+                        BreakpointApiUtils.GetBreakpointActionScriptBlock(
+                            breakpoint.Condition,
+                            breakpoint.HitCondition,
+                            logMessage: null,
+                            out string errorMessage);
+
+                    // If there was a problem with the condition string,
+                    // move onto the next breakpoint.
+                    if (!string.IsNullOrEmpty(errorMessage))
+                    {
+                        breakpoint.Verified = false;
+                        breakpoint.Message = errorMessage;
+                        configuredBreakpoints.Add(breakpoint);
+                        continue;
+                    }
+
+                    psCommand.AddParameter("Action", actionScriptBlock);
+                }
+            }
+
+            // If no PSCommand was created then there are no breakpoints to set.
+            if (psCommand != null)
+            {
+                IEnumerable<Breakpoint> setBreakpoints =
+                    await _powerShellContextService.ExecuteCommandAsync<Breakpoint>(psCommand);
+                configuredBreakpoints.AddRange(
+                    setBreakpoints.Select(CommandBreakpointDetails.Create));
+            }
+
+            return configuredBreakpoints;
+        }
+
+        /// <summary>
+        /// Clears all breakpoints in the current session.
+        /// </summary>
+        public async Task RemoveAllBreakpointsAsync(string scriptPath = null)
+        {
+            try
+            {
+                if (BreakpointApiUtils.SupportsBreakpointApis)
+                {
+                    foreach (Breakpoint breakpoint in BreakpointApiUtils.GetBreakpoints(
+                            _powerShellContextService.CurrentRunspace.Runspace.Debugger,
+                            _debugStateService.RunspaceId))
+                    {
+                        if (scriptPath == null || scriptPath == breakpoint.Script)
+                        {
+                            BreakpointApiUtils.RemoveBreakpoint(
+                                _powerShellContextService.CurrentRunspace.Runspace.Debugger,
+                                breakpoint,
+                                _debugStateService.RunspaceId);
+                        }
+                    }
+
+                    return;
+                }
+
+                // Legacy behavior
+
+                PSCommand psCommand = new PSCommand();
+                psCommand.AddCommand(@"Microsoft.PowerShell.Utility\Get-PSBreakpoint");
+
+                if (!string.IsNullOrEmpty(scriptPath))
+                {
+                    psCommand.AddParameter("Script", scriptPath);
+                }
+
+                psCommand.AddCommand(@"Microsoft.PowerShell.Utility\Remove-PSBreakpoint");
+
+                await _powerShellContextService.ExecuteCommandAsync<object>(psCommand).ConfigureAwait(false);
+            }
+            catch (Exception e)
+            {
+                _logger.LogException("Caught exception while clearing breakpoints from session", e);
+            }
+        }
+
+        public async Task RemoveBreakpointsAsync(IEnumerable<Breakpoint> breakpoints)
+        {
+            if (BreakpointApiUtils.SupportsBreakpointApis)
+            {
+                foreach (Breakpoint breakpoint in breakpoints)
+                {
+                    BreakpointApiUtils.RemoveBreakpoint(
+                        _powerShellContextService.CurrentRunspace.Runspace.Debugger,
+                        breakpoint,
+                        _debugStateService.RunspaceId);
+
+                    switch (breakpoint)
+                    {
+                        case CommandBreakpoint commandBreakpoint:
+                            CommandBreakpoints.Remove(commandBreakpoint);
+                            break;
+                        case LineBreakpoint lineBreakpoint:
+                            if (BreakpointsPerFile.TryGetValue(lineBreakpoint.Script, out HashSet<Breakpoint> bps))
+                            {
+                                bps.Remove(lineBreakpoint);
+                            }
+                            break;
+                        default:
+                            throw new ArgumentException("Unsupported breakpoint type.");
+                    }
+                }
+
+                return;
+            }
+
+            // Legacy behavior
+            var breakpointIds = breakpoints.Select(b => b.Id).ToArray();
+            if(breakpointIds.Length > 0)
+            {
+                PSCommand psCommand = new PSCommand();
+                psCommand.AddCommand(@"Microsoft.PowerShell.Utility\Remove-PSBreakpoint");
+                psCommand.AddParameter("Id", breakpoints.Select(b => b.Id).ToArray());
+
+                await _powerShellContextService.ExecuteCommandAsync<object>(psCommand);
+            }
+        }
+
+
+    }
+}