feat: add configuration cache dir for users

Author: XiaoxuanLu

plugins/amazonq/codewhisperer/jetbrains-community/src/software/aws/toolkits/jetbrains/services/codewhisperer/settings/CodeWhispererConfigurable.kt

@@ -198,6 +198,20 @@ class CodeWhispererConfigurable(private val project: Project) :
                 }.comment(message("aws.settings.codewhisperer.project_context.tooltip"))
             }
 
+            row(message("aws.settings.codewhisperer.project_context_cache_dir")) {
+                val fileChooserDescriptor = FileChooserDescriptorFactory.createSingleFolderDescriptor()
+                fileChooserDescriptor.isForcedToUseIdeaFileChooser = true
+
+                textFieldWithBrowseButton(fileChooserDescriptor = fileChooserDescriptor)
+                    .bindText(
+                        { codeWhispererSettings.getProjectContextCacheDir() },
+                        { codeWhispererSettings.setProjectContextCacheDir(it) }
+                    )
+                    .resizableColumn()
+                    .align(Align.FILL)
+                    .comment(message("aws.settings.codewhisperer.project_context_cache_dir.tooltip"))
+            }
+
             row(message("aws.settings.codewhisperer.project_context_index_thread")) {
                 intTextField(
                     range = CodeWhispererSettings.CONTEXT_INDEX_THREADS

plugins/amazonq/shared/jetbrains-community/src/software/aws/toolkits/jetbrains/services/amazonq/lsp/AmazonQLanguageClientImpl.kt

@@ -382,7 +382,8 @@ class AmazonQLanguageClientImpl(private val project: Project) : AmazonQLanguageC
                                         indexWorkerThreads = qSettings.getProjectContextIndexThreadCount(),
                                         enableGpuAcceleration = qSettings.isProjectContextGpu(),
                                         localIndexing = LocalIndexingConfiguration(
-                                            maxIndexSizeMB = qSettings.getProjectContextIndexMaxSize()
+                                            maxIndexSizeMB = qSettings.getProjectContextIndexMaxSize(),
+                                            indexCacheDirPath = qSettings.getProjectContextCacheDir()
                                         )
                                     )
                                 )

plugins/amazonq/shared/jetbrains-community/src/software/aws/toolkits/jetbrains/settings/CodeWhispererSettings.kt

@@ -94,6 +94,15 @@ class CodeWhispererSettings : PersistentStateComponent<CodeWhispererConfiguratio
         state.value[CodeWhispererConfigurationType.IsProjectContextGpu] = value
     }
 
+    fun getProjectContextCacheDir(): String = state.stringValue.getOrDefault(
+        CodeWhispererStringConfigurationType.ProjectContextCacheDir,
+        ""
+    )
+
+    fun setProjectContextCacheDir(value: String) {
+        state.stringValue[CodeWhispererStringConfigurationType.ProjectContextCacheDir] = value
+    }
+
     fun getProjectContextIndexThreadCount(): Int = state.intValue.getOrDefault(
         CodeWhispererIntConfigurationType.ProjectContextIndexThreadCount,
         0
@@ -196,6 +205,7 @@ enum class CodeWhispererConfigurationType {
 
 enum class CodeWhispererStringConfigurationType {
     IgnoredCodeReviewIssues,
+    ProjectContextCacheDir,
 }
 
 enum class CodeWhispererIntConfigurationType {

plugins/core/resources/resources/software/aws/toolkits/resources/MessagesBundle.properties

@@ -294,6 +294,8 @@ aws.settings.codewhisperer.include_code_with_reference=Include suggestions with
 aws.settings.codewhisperer.include_code_with_reference.tooltip=When checked, Amazon Q will include suggestions with code references. If you authenticate through IAM Identity Center, this setting is controlled by your Amazon Q Developer Pro administrator. <a href="https://docs.aws.amazon.com/amazonq/latest/qdeveloper-ug/code-reference.html">Learn more<a/>
 aws.settings.codewhisperer.project_context=Workspace index
 aws.settings.codewhisperer.project_context.tooltip=When you add @workspace to your questions in Amazon Q chat, Amazon Q will index your workspace files locally to use as context for its response. Extra CPU usage is expected while indexing a workspace. This will not impact Amazon Q features or your IDE, but you may manage CPU usage by setting the number of local threads below.
+aws.settings.codewhisperer.project_context_cache_dir=Workspace Index Cache Dir Path
+aws.settings.codewhisperer.project_context_cache_dir.tooltip=The path to the directory that contains the cache of the index of your workspace files
 aws.settings.codewhisperer.project_context_gpu=Workspace index uses GPU
 aws.settings.codewhisperer.project_context_gpu.tooltip=Enable GPU to help index your local workspace files. This setting only applies to Linux and Windows.
 aws.settings.codewhisperer.project_context_index_max_size=Workspace index max size