|
| 1 | +# coding=utf-8 |
| 2 | + |
| 3 | +''' |
| 4 | +requires Python 3.6 or later |
| 5 | +
|
| 6 | +pip install asyncio |
| 7 | +pip install websockets |
| 8 | +
|
| 9 | +''' |
| 10 | + |
| 11 | +import datetime |
| 12 | +import hashlib |
| 13 | +import hmac |
| 14 | +import json |
| 15 | +import sys |
| 16 | +from typing import Dict |
| 17 | + |
| 18 | +import requests |
| 19 | +from langchain_openai import ChatOpenAI |
| 20 | + |
| 21 | +from setting.models_provider.base_model_provider import MaxKBBaseModel |
| 22 | +from setting.models_provider.impl.base_tti import BaseTextToImage |
| 23 | + |
| 24 | +method = 'POST' |
| 25 | +host = 'visual.volcengineapi.com' |
| 26 | +region = 'cn-north-1' |
| 27 | +endpoint = 'https://visual.volcengineapi.com' |
| 28 | +service = 'cv' |
| 29 | + |
| 30 | +req_key_dict = { |
| 31 | + 'general_v1.4': 'high_aes_general_v14', |
| 32 | + 'general_v2.0': 'high_aes_general_v20', |
| 33 | + 'general_v2.0_L': 'high_aes_general_v20_L', |
| 34 | +} |
| 35 | + |
| 36 | + |
| 37 | +def sign(key, msg): |
| 38 | + return hmac.new(key, msg.encode('utf-8'), hashlib.sha256).digest() |
| 39 | + |
| 40 | + |
| 41 | +def getSignatureKey(key, dateStamp, regionName, serviceName): |
| 42 | + kDate = sign(key.encode('utf-8'), dateStamp) |
| 43 | + kRegion = sign(kDate, regionName) |
| 44 | + kService = sign(kRegion, serviceName) |
| 45 | + kSigning = sign(kService, 'request') |
| 46 | + return kSigning |
| 47 | + |
| 48 | + |
| 49 | +def formatQuery(parameters): |
| 50 | + request_parameters_init = '' |
| 51 | + for key in sorted(parameters): |
| 52 | + request_parameters_init += key + '=' + parameters[key] + '&' |
| 53 | + request_parameters = request_parameters_init[:-1] |
| 54 | + return request_parameters |
| 55 | + |
| 56 | + |
| 57 | +def signV4Request(access_key, secret_key, service, req_query, req_body): |
| 58 | + if access_key is None or secret_key is None: |
| 59 | + print('No access key is available.') |
| 60 | + sys.exit() |
| 61 | + |
| 62 | + t = datetime.datetime.utcnow() |
| 63 | + current_date = t.strftime('%Y%m%dT%H%M%SZ') |
| 64 | + # current_date = '20210818T095729Z' |
| 65 | + datestamp = t.strftime('%Y%m%d') # Date w/o time, used in credential scope |
| 66 | + canonical_uri = '/' |
| 67 | + canonical_querystring = req_query |
| 68 | + signed_headers = 'content-type;host;x-content-sha256;x-date' |
| 69 | + payload_hash = hashlib.sha256(req_body.encode('utf-8')).hexdigest() |
| 70 | + content_type = 'application/json' |
| 71 | + canonical_headers = 'content-type:' + content_type + '\n' + 'host:' + host + \ |
| 72 | + '\n' + 'x-content-sha256:' + payload_hash + \ |
| 73 | + '\n' + 'x-date:' + current_date + '\n' |
| 74 | + canonical_request = method + '\n' + canonical_uri + '\n' + canonical_querystring + \ |
| 75 | + '\n' + canonical_headers + '\n' + signed_headers + '\n' + payload_hash |
| 76 | + # print(canonical_request) |
| 77 | + algorithm = 'HMAC-SHA256' |
| 78 | + credential_scope = datestamp + '/' + region + '/' + service + '/' + 'request' |
| 79 | + string_to_sign = algorithm + '\n' + current_date + '\n' + credential_scope + '\n' + hashlib.sha256( |
| 80 | + canonical_request.encode('utf-8')).hexdigest() |
| 81 | + # print(string_to_sign) |
| 82 | + signing_key = getSignatureKey(secret_key, datestamp, region, service) |
| 83 | + # print(signing_key) |
| 84 | + signature = hmac.new(signing_key, (string_to_sign).encode( |
| 85 | + 'utf-8'), hashlib.sha256).hexdigest() |
| 86 | + # print(signature) |
| 87 | + |
| 88 | + authorization_header = algorithm + ' ' + 'Credential=' + access_key + '/' + \ |
| 89 | + credential_scope + ', ' + 'SignedHeaders=' + \ |
| 90 | + signed_headers + ', ' + 'Signature=' + signature |
| 91 | + # print(authorization_header) |
| 92 | + headers = {'X-Date': current_date, |
| 93 | + 'Authorization': authorization_header, |
| 94 | + 'X-Content-Sha256': payload_hash, |
| 95 | + 'Content-Type': content_type |
| 96 | + } |
| 97 | + # print(headers) |
| 98 | + |
| 99 | + # ************* SEND THE REQUEST ************* |
| 100 | + request_url = endpoint + '?' + canonical_querystring |
| 101 | + |
| 102 | + print('\nBEGIN REQUEST++++++++++++++++++++++++++++++++++++') |
| 103 | + print('Request URL = ' + request_url) |
| 104 | + try: |
| 105 | + r = requests.post(request_url, headers=headers, data=req_body) |
| 106 | + except Exception as err: |
| 107 | + print(f'error occurred: {err}') |
| 108 | + raise |
| 109 | + else: |
| 110 | + print('\nRESPONSE++++++++++++++++++++++++++++++++++++') |
| 111 | + print(f'Response code: {r.status_code}\n') |
| 112 | + # 使用 replace 方法将 \u0026 替换为 & |
| 113 | + resp_str = r.text.replace("\\u0026", "&") |
| 114 | + if r.status_code != 200: |
| 115 | + raise Exception(f'Error: {resp_str}') |
| 116 | + print(f'Response body: {resp_str}\n') |
| 117 | + return json.loads(resp_str)['data']['image_urls'] |
| 118 | + |
| 119 | + |
| 120 | +class VolcanicEngineTextToImage(MaxKBBaseModel, BaseTextToImage): |
| 121 | + access_key: str |
| 122 | + secret_key: str |
| 123 | + model_version: str |
| 124 | + params: dict |
| 125 | + |
| 126 | + def __init__(self, **kwargs): |
| 127 | + super().__init__(**kwargs) |
| 128 | + self.access_key = kwargs.get('access_key') |
| 129 | + self.secret_key = kwargs.get('secret_key') |
| 130 | + self.model_version = kwargs.get('model_version') |
| 131 | + self.params = kwargs.get('params') |
| 132 | + |
| 133 | + @staticmethod |
| 134 | + def new_instance(model_type, model_name, model_credential: Dict[str, object], **model_kwargs): |
| 135 | + optional_params = {'params': {}} |
| 136 | + for key, value in model_kwargs.items(): |
| 137 | + if key not in ['model_id', 'use_local', 'streaming']: |
| 138 | + optional_params['params'][key] = value |
| 139 | + return VolcanicEngineTextToImage( |
| 140 | + model_version=model_name, |
| 141 | + access_key=model_credential.get('access_key'), |
| 142 | + secret_key=model_credential.get('secret_key'), |
| 143 | + **optional_params |
| 144 | + ) |
| 145 | + |
| 146 | + def check_auth(self): |
| 147 | + res = self.generate_image('生成一张小猫图片') |
| 148 | + print(res) |
| 149 | + |
| 150 | + def generate_image(self, prompt: str, negative_prompt: str = None): |
| 151 | + # 请求Query，按照接口文档中填入即可 |
| 152 | + query_params = { |
| 153 | + 'Action': 'CVProcess', |
| 154 | + 'Version': '2022-08-31', |
| 155 | + } |
| 156 | + formatted_query = formatQuery(query_params) |
| 157 | + size = self.params.pop('size', '512*512').split('*') |
| 158 | + body_params = { |
| 159 | + "req_key": req_key_dict[self.model_version], |
| 160 | + "prompt": prompt, |
| 161 | + "model_version": self.model_version, |
| 162 | + "return_url": True, |
| 163 | + "width": int(size[0]), |
| 164 | + "height": int(size[1]), |
| 165 | + **self.params |
| 166 | + } |
| 167 | + formatted_body = json.dumps(body_params) |
| 168 | + return signV4Request(self.access_key, self.secret_key, service, formatted_query, formatted_body) |
| 169 | + |
| 170 | + def is_cache_model(self): |
| 171 | + return False |
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