[Assistants] Support retrieve assistant

Author: qianmoQ

docs/docs/reference/openai/assistants.md

@@ -141,3 +141,34 @@ Returns:
   "has_more": false
 }
 ```
+
+### Retrieve assistant
+
+---
+
+Retrieves an assistant.
+
+```java
+client.retrieveAssistant("asst_xv9N9dNXstuV8OVLElLqgV7U");
+```
+
+Returns:
+
+```json
+{
+  "id": "asst_abc123",
+  "object": "assistant",
+  "created_at": 1698984975,
+  "name": "Math Tutor",
+  "description": null,
+  "model": "gpt-4",
+  "instructions": "You are a personal math tutor. When asked a question, write and run Python code to answer the question.",
+  "tools": [
+    {
+      "type": "code_interpreter"
+    }
+  ],
+  "file_ids": [],
+  "metadata": {}
+}
+```

src/main/java/org/devlive/sdk/openai/DefaultApi.java

@@ -266,4 +266,11 @@ Single<AssistantsFileEntity> fetchCreateAssistantFile(@Url String url,
      */
     @GET
     Single<AssistantsFileResponse> fetchAssistantFiles(@Url String url);
+
+    /**
+     * Retrieves an assistant.
+     * 检索助手。
+     */
+    @GET
+    Single<AssistantsEntity> fetchRetrieveAssistant(@Url String url);
 }

src/main/java/org/devlive/sdk/openai/DefaultClient.java

@@ -303,6 +303,13 @@ public AssistantsFileResponse assistantsFiles(String assistantId)
                 .blockingGet();
     }
 
+    public AssistantsEntity retrieveAssistant(String assistantId)
+    {
+        String url = String.format(ProviderUtils.getUrl(provider, UrlModel.FETCH_RETRIEVE_ASSISTANT), assistantId);
+        return this.api.fetchRetrieveAssistant(url)
+                .blockingGet();
+    }
+
     private ObjectMapper createObjectMapper()
     {
         ObjectMapper objectMapper = new ObjectMapper();

src/main/java/org/devlive/sdk/openai/model/UrlModel.java

@@ -22,4 +22,5 @@ public enum UrlModel
     FETCH_FINE_TUNING_JOBS_CANCEL,
     FETCH_ASSISTANTS,
     FETCH_ASSISTANTS_FILES,
+    FETCH_RETRIEVE_ASSISTANT
 }

src/main/java/org/devlive/sdk/openai/utils/ProviderUtils.java

@@ -59,6 +59,7 @@ public static String getUrl(ProviderModel provider, UrlModel model)
         DEFAULT_PROVIDER.put(UrlModel.FETCH_FINE_TUNING_JOBS_CANCEL, "v1/fine_tuning/jobs/%s/cancel");
         DEFAULT_PROVIDER.put(UrlModel.FETCH_ASSISTANTS, "v1/assistants");
         DEFAULT_PROVIDER.put(UrlModel.FETCH_ASSISTANTS_FILES, "v1/assistants/%s/files");
+        DEFAULT_PROVIDER.put(UrlModel.FETCH_RETRIEVE_ASSISTANT, "v1/assistants/%s");
 
         AZURE_PROVIDER.put(UrlModel.FETCH_COMPLETIONS, "completions");
         AZURE_PROVIDER.put(UrlModel.FETCH_CHAT_COMPLETIONS, "chat/completions");

src/test/java/org/devlive/sdk/openai/AssistantsTest.java

@@ -53,4 +53,10 @@ public void testAssistantFiles()
     {
         Assert.assertNotNull(client.assistantsFiles("asst_xv9N9dNXstuV8OVLElLqgV7U"));
     }
+
+    @Test
+    public void testRetrieveAssistants()
+    {
+        Assert.assertNotNull(client.retrieveAssistant("asst_xv9N9dNXstuV8OVLElLqgV7U"));
+    }
 }