180 lines
5.0 KiB
Python
180 lines
5.0 KiB
Python
import re
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import json
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from traceback import print_exc
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from aiohttp import web
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from appPublic.dictObject import DictObject
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from appPublic.httpclient import HttpClient, RESPONSE_TEXT, RESPONSE_JSON, RESPONSE_BIN,RESPONSE_FILE, RESPONSE_STREAM
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from appPublic.argsConvert import ArgsConvert
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class LlmProxy:
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def __init__(self, processor, desc):
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assert desc.name
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self.name = desc.name
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self.processor = processor
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self.auth_api = desc.auth
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self.desc = desc
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self.api_name = desc.name
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self.data = DictObject()
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self.ac = ArgsConvert('${', '}')
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def line_chunk_match(self, l):
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if self.api.chunk_match:
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match = re.search(self.api.chunk_match, l)
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if match:
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return match.group(1)
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return l
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async def write_chunk(self, ll):
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def eq(a, b):
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return a == b
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def ne(a, b):
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return a != b
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opfuncs = {
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'==':eq,
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'!=':ne
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}
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try:
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print('write_chunk(),l=', ll)
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l = self.line_chunk_match(ll)
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d = DictObject(** json.loads(l))
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if self.api.chunk_filter:
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v = d.get_data_by_keys(self.api.chunk_filter.name)
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v1 = self.api.chunk_filter.value
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op = self.api.chunk_filter.op
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f = opfuncs.get(op)
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if f and f(v,v1):
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print('filtered', v, op, v1, f)
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return
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j = {}
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for r in self.api.resp or []:
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j[r.name] = d.get_data_by_keys(r.value);
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jstr = json.dumps(j) + '\n'
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bin = jstr.encode('utf-8')
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await self.resp.write(bin)
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await self.resp.drain()
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except Exception as e:
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print(f'Error:Write_chunk(),{l=} error:{e=}')
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print_exc()
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async def stream_handle(self, chunk):
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chunk = chunk.decode('utf-8')
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chunk = self.remain_str + chunk
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lines = chunk.split('\n')
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self.remain_str = lines[-1]
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ls = lines[:-1]
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for l in ls:
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if l == '':
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continue
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await self.write_chunk(l)
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async def get_apikey(self, apiname):
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f = self.processor.run_ns.get_llm_user_apikey
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if f:
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# return a DictObject instance
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return await f(apiname, self.user)
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raise Exception('get_llm_user_apikey() function not found in ServerEnv')
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async def do_auth(self, request):
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d = self.desc.auth
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self.data = self.get_data(self.name)
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if self.data.authed:
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return
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self.data = await self.get_apikey(self.name)
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if self.data is None:
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raise Exception(f'user({self.user}) do not has a apikey for {self.name}')
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method = d.get('method', 'POST')
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headers = {}
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for h in d.get('headers',{}):
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headers[h.get('name')] = h.get('value')
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mydata = {}
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for p in d.data or []:
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mydata[p.get('name')] = p.get('value')
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myparams = {}
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for p in d.params or []:
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myparams[p.get('name')] = p.get('value')
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url = d.get('url')
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params = {}
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_params = self.datalize(myparams, params)
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_headers = self.datalize(headers, params)
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_data = self.datalize(mydata, params)
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hc = HttpClient()
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resp_data = await hc.request(url, method, response_type=RESPONSE_JSON,
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params=_params,
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data=None if _data == {} else json.dumps(_data),
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headers=_headers)
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resp_data = DictObject(**resp_data)
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for sd in d.set_data:
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self.data[sd.name] = resp_data.get_data_by_keys(sd.field)
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self.data.authed = True
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self.set_data(self.name, self.data)
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def data_key(self, apiname):
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if self.user is None:
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self.user = 'anonymous'
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return apiname + '_a_' + self.user
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def set_data(self, apiname, data):
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request = self.processor.run_ns.request
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app = request.app
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app.set_data(self.data_key(apiname), data)
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def get_data(self, apiname):
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request = self.processor.run_ns.request
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app = request.app
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return app.get_data(self.data_key(apiname))
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async def __call__(self, request, params):
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self.user = await self.processor.run_ns.get_user()
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mapi = params.mapi
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stream = params.stream
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self.resp = web.StreamResponse()
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await self.resp.prepare(request)
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if stream is None:
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stream = True
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self.remain_str = ''
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if not self.desc[mapi]:
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raise Exception(f'{mapi} not defined')
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d = self.desc[mapi]
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self.api = d
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self.chunk_match = d.chunk_match
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if self.api.need_auth and self.auth_api:
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await self.do_auth(request)
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else:
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self.data = await self.get_apikey(self.name)
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assert d.get('url')
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method = d.get('method', 'POST')
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headers = {}
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for h in d.get('headers',{}):
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headers[h.get('name')] = h.get('value')
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mydata = {}
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for p in d.get('data', {}):
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mydata[p.get('name')] = p.get('value')
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myparams = {}
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for p in d.get('params', {}):
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myparams[p.get('name')] = p.get('value')
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url = d.get('url')
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_params = self.datalize(myparams, params)
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_headers = self.datalize(headers, params)
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_data = self.datalize(mydata, params)
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response_type = RESPONSE_STREAM
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hc = HttpClient()
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print(f'{url=},{method=},{_params=},{_data=},{_headers=}')
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resp_data = await hc.request(url, method, response_type=response_type,
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params=_params,
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data=None if _data == {} else json.dumps(_data),
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stream_func=self.stream_handle,
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headers=_headers)
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if self.remain_str != '':
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await self.write_chunk(self.remain_str)
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return self.resp
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def datalize(self, dic, data={}):
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mydata = self.data.copy()
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mydata.update(data)
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s1 = self.ac.convert(dic, mydata)
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return s1
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