add content cache to chat session

.gitignore

@@ -6,3 +6,5 @@ docs/
 
 # Ignore files generated automatically.
 test/spec/sponge_log.xml
+
+.idea/

package.json

@@ -26,7 +26,6 @@
     "lint": "gts lint",
     "clean-js-files": "find . -type f -name \"*.js\" -exec rm -f {} +",
     "clean-js-map-files": "find . -type f -name \"*.js.map\" -exec rm -f {} +",
-    "postpack": "if [ \"${CLEAN}\" ]; then npm run clean-after-pack; fi",
     "cover": "npm run cover:unit && npm run cover:integration && npm run cover:report",
     "cover:unit": "nyc npm run test",
     "cover:integration": "nyc --no-clean npm run test:system",

src/functions/post_request.ts

@@ -73,6 +73,8 @@ export async function postRequest({
     necessaryHeaders,
     requestOptions
   );
+  console.log('vertexEndpoint', vertexEndpoint);
+  console.log('json.stringify vertexai data', JSON.stringify(data));
   return fetch(vertexEndpoint, {
     ...getFetchOptions(requestOptions),
     method: 'POST',

src/models/chat_session.ts

@@ -271,6 +271,7 @@ export class ChatSessionPreview {
   private readonly toolConfig?: ToolConfig;
   private readonly apiEndpoint?: string;
   private readonly systemInstruction?: Content;
+  private readonly cachedContent?: string;
 
   async getHistory(): Promise<Content[]> {
     return Promise.resolve(this.historyInternal);
@@ -295,6 +296,7 @@ export class ChatSessionPreview {
     this.toolConfig = request.toolConfig;
     this.apiEndpoint = request.apiEndpoint;
     this.requestOptions = requestOptions ?? {};
+    this.cachedContent = request.cachedContent;
     if (request.systemInstruction) {
       this.systemInstruction = formulateSystemInstructionIntoContent(
         request.systemInstruction
@@ -423,20 +425,21 @@ export class ChatSessionPreview {
   ): Promise<StreamGenerateContentResult> {
     const newContent: Content[] =
       formulateNewContentFromSendMessageRequest(request);
-    const generateContentrequest: GenerateContentRequest = {
+    const generateContentRequest: GenerateContentRequest = {
       contents: this.historyInternal.concat(newContent),
       safetySettings: this.safetySettings,
       generationConfig: this.generationConfig,
       tools: this.tools,
       toolConfig: this.toolConfig,
       systemInstruction: this.systemInstruction,
+      cachedContent: this.cachedContent,
     };
 
     const streamGenerateContentResultPromise = generateContentStream(
       this.location,
       this.resourcePath,
       this.fetchToken(),
-      generateContentrequest,
+      generateContentRequest,
       this.apiEndpoint,
       this.generationConfig,
       this.safetySettings,