File size: 6,899 Bytes
165ed2c | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 | #!/usr/bin/env python3
from __future__ import annotations
import hashlib
import json
import os
import random
import re
import time
import urllib.error
import urllib.parse
import urllib.request
from dataclasses import dataclass
from typing import Any
RETRY_CODES = {429, 500, 502, 503, 504}
def canonical_json(value: Any) -> str:
return json.dumps(value, ensure_ascii=False, sort_keys=True, separators=(",", ":"))
def sha256_json(value: Any) -> str:
return hashlib.sha256(canonical_json(value).encode()).hexdigest()
def extract_json(text: str) -> Any:
text = text.strip()
if text.startswith("```"):
text = re.sub(r"^```(?:json)?\s*", "", text)
text = re.sub(r"\s*```$", "", text)
try:
return json.loads(text)
except json.JSONDecodeError:
starts = [i for i in (text.find("["), text.find("{")) if i >= 0]
if not starts:
raise
start = min(starts)
for end in range(len(text), start, -1):
try:
return json.loads(text[start:end])
except json.JSONDecodeError:
continue
raise
@dataclass
class ReviewResponse:
raw_body: dict
text: str
parsed: Any
usage: dict
model_version: str
latency_seconds: float
request_hash: str
response_hash: str
status_code: int
class ReviewClient:
def __init__(
self,
api_type: str,
base_url: str,
api_key: str,
model: str,
timeout: int = 180,
retries: int = 5,
extra_body: dict | None = None,
):
self.api_type = api_type
self.base_url = base_url.rstrip("/")
self.api_key = api_key
self.model = model
self.timeout = timeout
self.retries = retries
self.extra_body = extra_body or {}
if api_type not in {
"openai_compatible", "anthropic_compatible", "generic_http_json",
"local_openai_compatible", "custom_adapter",
}:
raise ValueError(f"unsupported REVIEW_API_TYPE: {api_type}")
def _request_spec(self, system: str, user: str, max_tokens: int) -> tuple[str, dict, dict]:
if self.api_type == "anthropic_compatible":
url = self.base_url + "/messages"
body = {
"model": self.model,
"max_tokens": max_tokens,
"system": system,
"messages": [{"role": "user", "content": user}],
}
body.update(self.extra_body)
headers = {
"content-type": "application/json",
"x-api-key": self.api_key,
"anthropic-version": "2023-06-01",
}
return url, body, headers
if self.api_type in {"openai_compatible", "local_openai_compatible"}:
url = self.base_url + "/chat/completions"
body = {
"model": self.model,
"temperature": 0,
"max_tokens": max_tokens,
"messages": [{"role": "system", "content": system}, {"role": "user", "content": user}],
}
body.update(self.extra_body)
return url, body, {"content-type": "application/json", "authorization": f"Bearer {self.api_key}"}
url = self.base_url
body = {"model": self.model, "system": system, "input": user, "max_tokens": max_tokens}
body.update(self.extra_body)
return url, body, {"content-type": "application/json", "authorization": f"Bearer {self.api_key}"}
def _parse_text(self, payload: dict) -> tuple[str, dict, str]:
if self.api_type == "anthropic_compatible":
text = "\n".join(
block.get("text", "") for block in payload.get("content", [])
if isinstance(block, dict) and block.get("type") == "text"
)
usage = payload.get("usage", {})
model_version = str(payload.get("model", self.model))
return text, usage, model_version
if self.api_type in {"openai_compatible", "local_openai_compatible"}:
text = payload["choices"][0]["message"]["content"]
return text, payload.get("usage", {}), str(payload.get("model", self.model))
text = payload.get("output") or payload.get("text") or payload.get("response") or ""
return str(text), payload.get("usage", {}), str(payload.get("model", self.model))
def complete_json(self, system: str, user: str, max_tokens: int = 4096) -> ReviewResponse:
url, body, headers = self._request_spec(system, user, max_tokens)
public_request = {"url_host": urllib.parse.urlparse(url).netloc, "body": body}
request_hash = sha256_json(public_request)
encoded = canonical_json(body).encode()
last_error: Exception | None = None
for attempt in range(self.retries + 1):
started = time.monotonic()
try:
request = urllib.request.Request(url, data=encoded, headers=headers, method="POST")
with urllib.request.urlopen(request, timeout=self.timeout) as response:
raw = response.read().decode("utf-8", errors="replace")
payload = json.loads(raw)
text, usage, model_version = self._parse_text(payload)
parsed = extract_json(text)
return ReviewResponse(
raw_body=payload, text=text, parsed=parsed, usage=usage,
model_version=model_version, latency_seconds=time.monotonic() - started,
request_hash=request_hash, response_hash=hashlib.sha256(raw.encode()).hexdigest(),
status_code=response.status,
)
except urllib.error.HTTPError as exc:
last_error = exc
if exc.code not in RETRY_CODES or attempt >= self.retries:
raise
except (urllib.error.URLError, TimeoutError, json.JSONDecodeError) as exc:
last_error = exc
if attempt >= self.retries:
raise
delay = min(60.0, (2 ** attempt) + random.random())
time.sleep(delay)
raise RuntimeError(f"request failed: {type(last_error).__name__}")
def client_from_env(api_key: str) -> ReviewClient:
extra = {}
if os.environ.get("REVIEW_EXTRA_BODY_JSON"):
extra = json.loads(os.environ["REVIEW_EXTRA_BODY_JSON"])
return ReviewClient(
api_type=os.environ.get("REVIEW_API_TYPE", "anthropic_compatible"),
base_url=os.environ["REVIEW_API_BASE_URL"],
api_key=api_key,
model=os.environ["REVIEW_MODEL_PRIMARY"],
timeout=int(os.environ.get("REVIEW_TIMEOUT_SECONDS", "180")),
retries=int(os.environ.get("REVIEW_MAX_RETRIES", "5")),
extra_body=extra,
)
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