Fix duplicates in listing resources and add condition to manifests

adapters/powershell/PowerShell_adapter.dsc.resource.json

@@ -7,6 +7,7 @@
     "tags": [
         "PowerShell"
     ],
+    "condition": "[not(equals(tryWhich('pwsh'), null()))]",
     "adapter": {
         "list": {
             "executable": "pwsh",

adapters/powershell/powershell.dsc.resource.json

@@ -8,6 +8,7 @@
     "tags": [
       "PowerShell"
     ],
+    "condition": "[not(equals(tryWhich('pwsh'), null()))]",
     "adapter": {
       "list": {
         "executable": "pwsh",

data.build.json

@@ -29,6 +29,8 @@
       "runcommandonset",
       "sshdconfig",
       "sshd_config.dsc.resource.json",
+      "sshd-subsystem.dsc.resource.json",
+      "sshd-subsystemList.dsc.resource.json",
       "y2j"
     ],
     "macOS": [
@@ -56,6 +58,8 @@
       "runcommandonset",
       "sshdconfig",
       "sshd_config.dsc.resource.json",
+      "sshd-subsystem.dsc.resource.json",
+      "sshd-subsystemList.dsc.resource.json",
       "y2j"
     ],
     "Windows": [
@@ -92,6 +96,8 @@
       "sshdconfig.exe",
       "sshd-windows.dsc.resource.json",
       "sshd_config.dsc.resource.json",
+      "sshd-subsystem.dsc.resource.json",
+      "sshd-subsystemList.dsc.resource.json",
       "windowspowershell.dsc.resource.json",
       "windowsupdate.dsc.resource.json",
       "wu_dsc.exe",

dsc/src/mcp/list_dsc_resources.rs

@@ -12,7 +12,6 @@ use rmcp::{ErrorData as McpError, Json, tool, tool_router, handler::server::wrap
 use rust_i18n::t;
 use schemars::JsonSchema;
 use serde::{Deserialize, Serialize};
-use std::collections::BTreeMap;
 use tokio::task;
 
 #[derive(Serialize, JsonSchema)]
@@ -63,7 +62,7 @@ impl McpServer {
                 },
                 None => None,
             };
-            let mut resources = BTreeMap::<FullyQualifiedTypeName, ResourceSummary>::new();
+            let mut resources = Vec::<ResourceSummary>::new();
             for resource in dsc.list_available(&DiscoveryKind::Resource, &TypeNameFilter::default(), adapter_filter, ProgressFormat::None) {
                 if let Resource(resource) = resource {
                     let summary = ResourceSummary {
@@ -72,10 +71,10 @@ impl McpServer {
                         description: resource.description.clone(),
                         require_adapter: resource.require_adapter,
                     };
-                    resources.insert(resource.type_name.clone(), summary);
+                    resources.push(summary);
                 }
             }
-            Ok(ResourceListResult { resources: resources.into_values().collect() })
+            Ok(ResourceListResult { resources })
         }).await.map_err(|e| McpError::internal_error(e.to_string(), None))??;
 
         Ok(Json(result))

dsc/tests/dsc_mcp.tests.ps1

@@ -104,8 +104,8 @@ Describe 'Tests for MCP server' {
 
         $response = Send-McpRequest -request $mcpRequest
         $response.id | Should -BeGreaterOrEqual 3
-        $resources = dsc resource list | ConvertFrom-Json -Depth 20 | Select-Object type, kind, description -Unique
-        $response.result.structuredContent.resources.Count | Should -Be $resources.Count
+        $resources = dsc resource list | ConvertFrom-Json -Depth 20 | Select-Object type, kind, description
+        $response.result.structuredContent.resources.Count | Should -Be $resources.Count -Because "MCP:`n$($response.result.structuredContent.resources | Format-Table | Out-String)`nDSC:`n$($resources | Format-Table | Out-String)"
         for ($i = 0; $i -lt $resources.Count; $i++) {
             ($response.result.structuredContent.resources[$i].psobject.properties | Measure-Object).Count | Should -BeGreaterOrEqual 3
             $response.result.structuredContent.resources[$i].type | Should -BeExactly $resources[$i].type -Because ($response.result.structuredContent | ConvertTo-Json -Depth 20 | Out-String)

dsc/tests/dsc_resource_list.tests.ps1

@@ -38,20 +38,28 @@ Describe 'Tests for listing resources' {
     ) {
         param($tags, $description, $expectedCount, $expectedType)
 
-        if ($tags -and $description) {
-            $resources = dsc resource list --tags $tags --description $description | ConvertFrom-Json
-        }
-        elseif ($tags) {
-            $resources = dsc resource list --tags $tags | ConvertFrom-Json
-        }
-        else {
-            $resources = dsc resource list --description $description | ConvertFrom-Json
-        }
+        $oldPath = $env:DSC_RESOURCE_PATH
+        try {
+            # Need to restrict the search as more resources are being added like from PS7
+            $env:DSC_RESOURCE_PATH = Split-Path (Get-Command dsc).Source -Parent
 
-        $LASTEXITCODE | Should -Be 0
-        $resources.Count | Should -Be $expectedCount
-        if ($expectedCount -gt 0) {
-            $resources.type | Should -BeExactly $expectedType
+            if ($tags -and $description) {
+                $resources = dsc resource list --tags $tags --description $description | ConvertFrom-Json
+            }
+            elseif ($tags) {
+                $resources = dsc resource list --tags $tags | ConvertFrom-Json
+            }
+            else {
+                $resources = dsc resource list --description $description | ConvertFrom-Json
+            }
+
+            $LASTEXITCODE | Should -Be 0
+            $resources.Count | Should -Be $expectedCount
+            if ($expectedCount -gt 0) {
+                $resources.type | Should -BeExactly $expectedType
+            }
+        } finally {
+            $env:DSC_RESOURCE_PATH = $oldPath
         }
     }
 
@@ -111,4 +119,45 @@ Describe 'Tests for listing resources' {
         }
         $foundWideLine | Should -BeTrue
     }
+
+    It 'No duplicates based on type name and version are returned' {
+        $resource_manifest = @'
+{
+    "$schema": "https://aka.ms/dsc/schemas/v3/bundled/resource/manifest.json",
+    "type": "Microsoft.DSC.Debug/EchoDupe",
+    "version": "1.2.3",
+    "description": "A duplicate resource for testing",
+    "get": {
+        "executable": "dscecho",
+        "args": [
+            {
+                "jsonInputArg": "--input",
+                "mandatory": true
+            }
+        ]
+    },
+    "schema": {
+        "command": {
+            "executable": "dscecho"
+        }
+    }
+}
+'@
+        $manifestPath = Join-Path $TestDrive "echoDupeManifest.dsc.resource.json"
+        $manifestDupePath = Join-Path $TestDrive "echoDupeManifestDuplicate.dsc.resource.json"
+        Set-Content -Path $manifestPath -Value $resource_manifest
+        Set-Content -Path $manifestDupePath -Value $resource_manifest
+
+        try {
+            $env:DSC_RESOURCE_PATH = $TestDrive + [System.IO.Path]::PathSeparator + $env:PATH
+            $resources = dsc resource list | ConvertFrom-Json
+            $LASTEXITCODE | Should -Be 0
+            $resourceGroups = $resources | Group-Object -Property type, version
+            foreach ($group in $resourceGroups) {
+                $group.Count | Should -Be 1 -Because ($resources | ConvertTo-Json -Depth 20)
+            }
+        } finally {
+            $env:DSC_RESOURCE_PATH = $null
+        }
+    }
 }

extensions/powershell/powershell.dsc.extension.json

@@ -3,6 +3,7 @@
   "type": "Microsoft.PowerShell/Discover",
   "version": "0.1.0",
   "description": "Discovers DSC resources packaged in PowerShell 7 modules.",
+  "condition": "[not(equals(tryWhich('pwsh'), null()))]",
   "discover": {
     "executable": "pwsh",
     "args": [

lib/dsc-lib/src/discovery/mod.rs

@@ -68,7 +68,7 @@ impl Discovery {
             Box::new(command_discovery::CommandDiscovery::new(progress_format)),
         ];
 
-        let mut resources: Vec<ImportedManifest> = Vec::new();
+        let mut resources: BTreeMap<String, ImportedManifest> = BTreeMap::new();
 
         for mut discovery_type in discovery_types {
 
@@ -81,8 +81,16 @@ impl Discovery {
             };
 
             for (_resource_name, found_resources) in discovered_resources {
-                for resource in found_resources {
-                    resources.push(resource.clone());
+                for manifest in found_resources {
+                    let key = match &manifest {
+                        ImportedManifest::Resource(resource) => {
+                            format!("{}@{}", resource.type_name.to_lowercase(), resource.version)
+                        },
+                        ImportedManifest::Extension(extension) => {
+                            format!("{}@{}", extension.type_name.to_lowercase(), extension.version)
+                        }
+                    };
+                    resources.insert(key, manifest);
                 }
             };
 
@@ -91,7 +99,7 @@ impl Discovery {
             }
         }
 
-        resources
+        resources.into_values().collect::<Vec<ImportedManifest>>()
     }
 
     pub fn get_extensions(&mut self, capability: &Capability) -> Vec<DscExtension> {

resources/PSScript/psscript.dsc.resource.json

@@ -3,6 +3,7 @@
     "type": "Microsoft.DSC.Transitional/PowerShellScript",
     "description": "Enable running PowerShell 7 scripts inline",
     "version": "0.1.0",
+    "condition": "[not(equals(tryWhich('pwsh'), null()))]",
     "get": {
         "executable": "pwsh",
         "args": [

resources/sshdconfig/sshd-subsystem.dsc.resource.json

@@ -3,6 +3,7 @@
     "type": "Microsoft.OpenSSH.SSHD/Subsystem",
     "description": "Manage SSH Server Subsystem keyword (single entry)",
     "version": "0.1.0",
+    "condition": "[not(equals(tryWhich('sshd'), null()))]",
     "get": {
         "executable": "sshdconfig",
         "args": [

resources/sshdconfig/sshd-subsystemList.dsc.resource.json

@@ -3,6 +3,7 @@
     "type": "Microsoft.OpenSSH.SSHD/SubsystemList",
     "description": "Manage SSH Server Subsystem keyword (accepts multiple entries)",
     "version": "0.1.0",
+    "condition": "[not(equals(tryWhich('sshd'), null()))]",
     "get": {
         "executable": "sshdconfig",
         "args": [

resources/sshdconfig/sshd-windows.dsc.resource.json

@@ -5,6 +5,7 @@
     "tags": [
         "Windows"
     ],
+    "condition": "[not(equals(tryWhich('sshd'), null()))]",
     "version": "0.1.0",
     "get": {
         "executable": "sshdconfig",

resources/sshdconfig/sshd_config.dsc.resource.json

@@ -2,6 +2,7 @@
     "$schema": "https://aka.ms/dsc/schemas/v3/bundled/resource/manifest.json",
     "type": "Microsoft.OpenSSH.SSHD/sshd_config",
     "description": "Manage SSH Server Configuration",
+    "condition": "[not(equals(tryWhich('sshd'), null()))]",
     "version": "0.1.0",
         "get": {
         "executable": "sshdconfig",