[Spec][Ngram] Support multiple SAMs with dynamic HTTP API (#22203)

python/sglang/jit_kernel/ngram_corpus.py

@@ -118,8 +118,8 @@ def get_ngram_corpus_cls():
             state_ids_t = torch.tensor(state_ids, dtype=torch.int64)
             self.erase_match_state(state_ids_t)  # type: ignore
 
-        def load_external_corpus(
-            self, chunks: Iterable[Sequence[int]]
+        def load_external_corpus_named(
+            self, corpus_id: str, chunks: Iterable[Sequence[int]]
         ) -> Tuple[int, int]:
             self.start_external_corpus_load()  # type: ignore
             chunk_count = 0
@@ -130,10 +130,19 @@ def get_ngram_corpus_cls():
                     loaded_token_count += len(tokens_t)
                     self.append_external_corpus_tokens(tokens_t)  # type: ignore
                     chunk_count += 1
-                self.finish_external_corpus_load()  # type: ignore
+                self.finish_external_corpus_load(corpus_id)  # type: ignore
             except Exception:
                 self.clear_external_corpus()  # type: ignore
                 raise
             return chunk_count, loaded_token_count
 
+        def remove_corpus(self, corpus_id: str) -> None:
+            self.remove_external_corpus(corpus_id)  # type: ignore
+
+        def list_corpora(self) -> List[str]:
+            result = self.list_external_corpora()  # type: ignore
+            if not result:
+                return []
+            return result.split("\n")
+
     return NgramCorpusFFI