breaking(router): modify /generate API to only return generated text (#50)

@njhill, @yk FYI

generated_text was concatenated to the user prompt for legacy reason. We
want to remove this behaviour as we don't think it is useful and even
detrimonial to usability.

We also remove the unused Vec.

launcher/tests/bloom_560m.json

@@ -118,6 +118,6 @@
         ]
       ]
     },
-    "generated_text": "Test request.get(\"action\");\n        if (action == null) {\n            throw new RuntimeException"
+    "generated_text": ".get(\"action\");\n        if (action == null) {\n            throw new RuntimeException"
   }
 ]
\ No newline at end of file

launcher/tests/integration_tests.rs

@@ -97,8 +97,8 @@ fn test_model(
     launcher.terminate().unwrap();
     launcher.wait().unwrap();
 
-    let mut results: Vec<GeneratedText> = res.unwrap().json().unwrap();
-    results.pop().unwrap()
+    let result: GeneratedText = res.unwrap().json().unwrap();
+    result
 }
 
 fn read_json(name: &str) -> GeneratedText {

router/src/lib.rs

-mod infer;
 /// Text Generation Inference Webserver
+
+mod infer;
 mod queue;
 pub mod server;
 mod validation;

router/src/server.rs

@@ -125,10 +125,10 @@ async fn generate(
     tracing::info!("Output: {}", response.generated_text.text);
 
     // Send response
-    let response = vec![GenerateResponse {
+    let response = GenerateResponse {
         generated_text: response.generated_text.text,
         details,
-    }];
+    };
     Ok((headers, Json(response)))
 }
 

server/tests/models/test_bloom.py

@@ -141,7 +141,7 @@ def test_causal_lm_generate_token_completion(default_bloom, default_bloom_batch)
     assert len(generations) == 1
     assert (
         generations[0].generated_text.text
-        == "TestTestTestTestTestTestTestTestTestTestTest"
+        == "TestTestTestTestTestTestTestTestTestTest"
     )
     assert generations[0].request_id == default_bloom_batch.requests[0].id
     assert (
@@ -165,7 +165,7 @@ def test_causal_lm_generate_token_completion_multi(
     assert next_batch is not None
 
     assert len(generations) == 2
-    assert generations[1].generated_text.text == "TestTestTestTestTestTest"
+    assert generations[1].generated_text.text == "TestTestTestTestTest"
     assert (
         generations[1].request_id == default_multi_requests_bloom_batch.requests[1].id
     )
@@ -188,7 +188,7 @@ def test_causal_lm_generate_token_completion_multi(
     assert len(generations) == 1
     assert (
         generations[0].generated_text.text
-        == "TestTestTestTestTestTestTestTestTestTestTest"
+        == "TestTestTestTestTestTestTestTestTestTest"
     )
     assert (
         generations[0].request_id == default_multi_requests_bloom_batch.requests[0].id
@@ -261,7 +261,7 @@ def test_batch_concatenate(
     assert next_batch is not None
 
     assert len(generations) == 3
-    assert generations[2].generated_text.text == "TestTestTestTestTestTest"
+    assert generations[2].generated_text.text == "TestTestTestTestTest"
     assert (
         generations[2].request_id == default_multi_requests_bloom_batch.requests[1].id
     )
@@ -284,7 +284,7 @@ def test_batch_concatenate(
     assert len(generations) == 2
     assert (
         generations[0].generated_text.text
-        == "TestTestTestTestTestTestTestTestTestTestTest"
+        == "TestTestTestTestTestTestTestTestTestTest"
     )
     assert generations[0].request_id == default_bloom_batch.requests[0].id
     assert (
@@ -307,7 +307,7 @@ def test_batch_concatenate(
     assert len(generations) == 1
     assert (
         generations[0].generated_text.text
-        == "TestTestTestTestTestTestTestTestTestTestTest"
+        == "TestTestTestTestTestTestTestTestTestTest"
     )
     assert (
         generations[0].request_id == default_multi_requests_bloom_batch.requests[0].id

server/tests/models/test_causal_lm.py

@@ -138,7 +138,7 @@ def test_causal_lm_generate_token_completion(
     assert next_batch is None
 
     assert len(generations) == 1
-    assert generations[0].generated_text.text == "Test.java:784) at net.minecraft."
+    assert generations[0].generated_text.text == ".java:784) at net.minecraft."
     assert generations[0].request_id == default_causal_lm_batch.requests[0].id
     assert (
         generations[0].generated_text.generated_tokens
@@ -161,7 +161,7 @@ def test_causal_lm_generate_token_completion_multi(
     assert next_batch is not None
 
     assert len(generations) == 2
-    assert generations[1].generated_text.text == "Test.java:784)"
+    assert generations[1].generated_text.text == ".java:784)"
     assert (
         generations[1].request_id
         == default_multi_requests_causal_lm_batch.requests[1].id
@@ -183,7 +183,7 @@ def test_causal_lm_generate_token_completion_multi(
     assert next_batch is None
 
     assert len(generations) == 1
-    assert generations[0].generated_text.text == "Test.java:784) at net.minecraft."
+    assert generations[0].generated_text.text == ".java:784) at net.minecraft."
     assert (
         generations[0].request_id
         == default_multi_requests_causal_lm_batch.requests[0].id
@@ -255,7 +255,7 @@ def test_batch_concatenate(
     assert next_batch is not None
 
     assert len(generations) == 3
-    assert generations[2].generated_text.text == "Test.java:784)"
+    assert generations[2].generated_text.text == ".java:784)"
     assert (
         generations[2].request_id
         == default_multi_requests_causal_lm_batch.requests[1].id
@@ -277,7 +277,7 @@ def test_batch_concatenate(
     assert next_batch is not None
 
     assert len(generations) == 2
-    assert generations[0].generated_text.text == "Test.java:784) at net.minecraft."
+    assert generations[0].generated_text.text == ".java:784) at net.minecraft."
     assert generations[0].request_id == default_causal_lm_batch.requests[0].id
     assert (
         generations[0].generated_text.generated_tokens
@@ -297,7 +297,7 @@ def test_batch_concatenate(
     assert next_batch is None
 
     assert len(generations) == 1
-    assert generations[0].generated_text.text == "Test.java:784) at net.minecraft."
+    assert generations[0].generated_text.text == ".java:784) at net.minecraft."
     assert (
         generations[0].request_id
         == default_multi_requests_causal_lm_batch.requests[0].id

server/tests/models/test_santacoder.py

@@ -57,7 +57,7 @@ def test_santacoder_generate_token_completion(default_santacoder, default_pb_bat
     assert next_batch is None
 
     assert len(generations) == 1
-    assert generations[0].generated_text.text == "def test_get_all_users_with_"
+    assert generations[0].generated_text.text == " test_get_all_users_with_"
     assert generations[0].request_id == batch.requests[0].id
     assert (
         generations[0].generated_text.generated_tokens
@@ -84,7 +84,7 @@ def test_fim_santacoder_generate_token_completion(
     assert len(generations) == 1
     assert (
         generations[0].generated_text.text
-        == """<fim-prefix>def<fim-suffix>world<fim-middle>ineProperty(exports, "__esModule", { value"""
+        == """ineProperty(exports, "__esModule", { value"""
     )
     assert generations[0].request_id == batch.requests[0].id
     assert (

server/text_generation/models/__init__.py

@@ -32,7 +32,7 @@ torch.backends.cudnn.allow_tf32 = True
 def get_model(
     model_name: str, revision: Optional[str], sharded: bool, quantize: bool
 ) -> Model:
-    config = AutoConfig.from_pretrained(model_name)
+    config = AutoConfig.from_pretrained(model_name, revision=revision)
 
     if config.model_type == "bloom":
         if sharded:

server/text_generation/models/causal_lm.py

@@ -360,11 +360,9 @@ class CausalLM(Model):
 
             if stop:
                 # Decode generated tokens
-                generated_text = self.decode(
+                output_text = self.decode(
                     all_input_ids[-stopping_criteria.current_tokens :, 0]
                 )
-                output_text = request.inputs + generated_text
-
                 # Get seed
                 if isinstance(next_token_chooser.choice, Sampling):
                     seed = next_token_chooser.choice.seed