add multipart request support

cachy.jsonl

@@ -19,3 +19,5 @@
 {"key": "d4142886", "response": "{\n  \"candidates\": [\n    {\n      \"content\": {\n        \"parts\": [\n          {\n            \"text\": \"Concurrency\\n\"\n          }\n        ],\n        \"role\": \"model\"\n      },\n      \"finishReason\": \"STOP\",\n      \"avgLogprobs\": -0.29076665639877319\n    }\n  ],\n  \"usageMetadata\": {\n    \"promptTokenCount\": 10,\n    \"candidatesTokenCount\": 2,\n    \"totalTokenCount\": 12,\n    \"promptTokensDetails\": [\n      {\n        \"modality\": \"TEXT\",\n        \"tokenCount\": 10\n      }\n    ],\n    \"candidatesTokensDetails\": [\n      {\n        \"modality\": \"TEXT\",\n        \"tokenCount\": 2\n      }\n    ]\n  },\n  \"modelVersion\": \"gemini-2.0-flash\",\n  \"responseId\": \"1gvIaLDAGe2kvdIPsY6--Q0\"\n}\n"}
 {"key": "fe23aa62", "response": "data: {\"candidates\": [{\"content\": {\"parts\": [{\"text\": \"Concurrency\"}],\"role\": \"model\"}}],\"usageMetadata\": {\"promptTokenCount\": 12,\"totalTokenCount\": 12,\"promptTokensDetails\": [{\"modality\": \"TEXT\",\"tokenCount\": 12}]},\"modelVersion\": \"gemini-2.0-flash\",\"responseId\": \"1gvIaKSQOt3h1PIPwJO12Ac\"}\r\n\r\ndata: {\"candidates\": [{\"content\": {\"parts\": [{\"text\": \"\\n\"}],\"role\": \"model\"},\"finishReason\": \"STOP\"}],\"usageMetadata\": {\"promptTokenCount\": 11,\"candidatesTokenCount\": 2,\"totalTokenCount\": 13,\"promptTokensDetails\": [{\"modality\": \"TEXT\",\"tokenCount\": 11}],\"candidatesTokensDetails\": [{\"modality\": \"TEXT\",\"tokenCount\": 2}]},\"modelVersion\": \"gemini-2.0-flash\",\"responseId\": \"1gvIaKSQOt3h1PIPwJO12Ac\"}\r\n\r\n"}
 {"key": "c90feca2", "response": "{\"id\":\"msg_01HpiQTg22STqarE33JnuHdt\",\"type\":\"message\",\"role\":\"assistant\",\"model\":\"claude-sonnet-4-20250514\",\"content\":[{\"type\":\"tool_use\",\"id\":\"toolu_0182nVBg1pTYTadKxS5qgCt4\",\"name\":\"get_current_weather\",\"input\":{\"location\":\"Reims\"}}],\"stop_reason\":\"tool_use\",\"stop_sequence\":null,\"usage\":{\"input_tokens\":427,\"cache_creation_input_tokens\":0,\"cache_read_input_tokens\":0,\"cache_creation\":{\"ephemeral_5m_input_tokens\":0,\"ephemeral_1h_input_tokens\":0},\"output_tokens\":57,\"service_tier\":\"standard\"}}"}
+{"key": "79d28180", "response": "{\n  \"id\": \"resp_0d29a574150b40b200692da5070d2c81a19a42ec84f97314ef\",\n  \"object\": \"response\",\n  \"created_at\": 1764599047,\n  \"status\": \"completed\",\n  \"background\": false,\n  \"billing\": {\n    \"payer\": \"developer\"\n  },\n  \"error\": null,\n  \"incomplete_details\": null,\n  \"instructions\": null,\n  \"max_output_tokens\": null,\n  \"max_tool_calls\": null,\n  \"model\": \"gpt-4.1-2025-04-14\",\n  \"output\": [\n    {\n      \"id\": \"msg_0d29a574150b40b200692da507957081a19436f848296dfbb9\",\n      \"type\": \"message\",\n      \"status\": \"completed\",\n      \"content\": [\n        {\n          \"type\": \"output_text\",\n          \"annotations\": [],\n          \"logprobs\": [],\n          \"text\": \"Hey! How can I help you today? \\ud83d\\ude0a\"\n        }\n      ],\n      \"role\": \"assistant\"\n    }\n  ],\n  \"parallel_tool_calls\": true,\n  \"previous_response_id\": null,\n  \"prompt_cache_key\": null,\n  \"prompt_cache_retention\": null,\n  \"reasoning\": {\n    \"effort\": null,\n    \"summary\": null\n  },\n  \"safety_identifier\": null,\n  \"service_tier\": \"default\",\n  \"store\": true,\n  \"temperature\": 1.0,\n  \"text\": {\n    \"format\": {\n      \"type\": \"text\"\n    },\n    \"verbosity\": \"medium\"\n  },\n  \"tool_choice\": \"auto\",\n  \"tools\": [],\n  \"top_logprobs\": 0,\n  \"top_p\": 1.0,\n  \"truncation\": \"disabled\",\n  \"usage\": {\n    \"input_tokens\": 9,\n    \"input_tokens_details\": {\n      \"cached_tokens\": 0\n    },\n    \"output_tokens\": 11,\n    \"output_tokens_details\": {\n      \"reasoning_tokens\": 0\n    },\n    \"total_tokens\": 20\n  },\n  \"user\": null,\n  \"metadata\": {}\n}"}
+{"key": "bccdd394", "response": "{\"type\":\"file\",\"id\":\"file_011CVgC7NxcXFGnoqb8FSb6A\",\"size_bytes\":11,\"created_at\":\"2025-12-01T15:19:40.864000Z\",\"filename\":\"ex.txt\",\"mime_type\":\"text/plain\",\"downloadable\":false}"}

cachy/_modidx.py

@@ -8,6 +8,7 @@
   'syms': { 'cachy.core': { 'cachy.core._apply_async_patch': ('core.html#_apply_async_patch', 'cachy/core.py'),
                             'cachy.core._apply_sync_patch': ('core.html#_apply_sync_patch', 'cachy/core.py'),
                             'cachy.core._cache': ('core.html#_cache', 'cachy/core.py'),
+                            'cachy.core._content': ('core.html#_content', 'cachy/core.py'),
                             'cachy.core._key': ('core.html#_key', 'cachy/core.py'),
                             'cachy.core._should_cache': ('core.html#_should_cache', 'cachy/core.py'),
                             'cachy.core._write_cache': ('core.html#_write_cache', 'cachy/core.py'),

cachy/core.py

@@ -25,10 +25,17 @@ def _cache(key, cfp):
 def _write_cache(key, content, cfp):
     with open(cfp, "a") as f: f.write(json.dumps({"key":key, "response": content})+"\n")
 
+# %% ../nbs/00_core.ipynb
+def _content(r):
+    "Extract content from request."
+    if not hasattr(r, '_content'): r.read()
+    boundary = httpx._multipart.get_multipart_boundary_from_content_type(r.headers.get("Content-Type", "").encode())
+    return r.content.replace(boundary, b"cachy-boundary") if boundary else r.content
+
 # %% ../nbs/00_core.ipynb
 def _key(r, is_stream=False):
     "Create a unique, deterministic id from the request `r`."
-    return hashlib.sha256(f"{r.url.host}{is_stream}".encode() + r.content).hexdigest()[:8]
+    return hashlib.sha256(f"{r.url.host}{is_stream}".encode() + _content(r)).hexdigest()[:8]
 
 # %% ../nbs/00_core.ipynb
 def _apply_async_patch(cfp, doms):