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@@ -1,243 +1,237 b'' | |||
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1 | 1 | ''' |
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2 | 2 | This library is provided to allow standard python logging |
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3 | 3 | to output log data as JSON formatted strings |
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4 | 4 | ''' |
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5 | 5 | import logging |
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6 | import json | |
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7 | 6 | import re |
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8 | 7 | from datetime import date, datetime, time, tzinfo, timedelta |
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9 | 8 | import traceback |
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10 | 9 | import importlib |
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11 | 10 | |
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12 | 11 | from inspect import istraceback |
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13 | 12 | |
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14 | 13 | from collections import OrderedDict |
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15 | 14 | |
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16 | ||
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17 | def _inject_req_id(record, *args, **kwargs): | |
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18 | return record | |
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19 | ||
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20 | ||
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21 | ExceptionAwareFormatter = logging.Formatter | |
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22 | ||
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15 | from ...logging_formatter import _inject_req_id, ExceptionAwareFormatter | |
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16 | from ...ext_json import sjson as json | |
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23 | 17 | |
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24 | 18 | ZERO = timedelta(0) |
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25 | 19 | HOUR = timedelta(hours=1) |
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26 | 20 | |
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27 | 21 | |
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28 | 22 | class UTC(tzinfo): |
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29 | 23 | """UTC""" |
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30 | 24 | |
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31 | 25 | def utcoffset(self, dt): |
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32 | 26 | return ZERO |
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33 | 27 | |
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34 | 28 | def tzname(self, dt): |
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35 | 29 | return "UTC" |
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36 | 30 | |
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37 | 31 | def dst(self, dt): |
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38 | 32 | return ZERO |
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39 | 33 | |
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40 | 34 | utc = UTC() |
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41 | 35 | |
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42 | 36 | |
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43 | 37 | # skip natural LogRecord attributes |
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44 | 38 | # http://docs.python.org/library/logging.html#logrecord-attributes |
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45 | 39 | RESERVED_ATTRS = ( |
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46 | 40 | 'args', 'asctime', 'created', 'exc_info', 'exc_text', 'filename', |
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47 | 41 | 'funcName', 'levelname', 'levelno', 'lineno', 'module', |
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48 | 42 | 'msecs', 'message', 'msg', 'name', 'pathname', 'process', |
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49 | 43 | 'processName', 'relativeCreated', 'stack_info', 'thread', 'threadName') |
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50 | 44 | |
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51 | 45 | |
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52 | 46 | def merge_record_extra(record, target, reserved): |
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53 | 47 | """ |
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54 | 48 | Merges extra attributes from LogRecord object into target dictionary |
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55 | 49 | |
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56 | 50 | :param record: logging.LogRecord |
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57 | 51 | :param target: dict to update |
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58 | 52 | :param reserved: dict or list with reserved keys to skip |
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59 | 53 | """ |
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60 | 54 | for key, value in record.__dict__.items(): |
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61 | 55 | # this allows to have numeric keys |
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62 | 56 | if (key not in reserved |
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63 | 57 | and not (hasattr(key, "startswith") |
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64 | 58 | and key.startswith('_'))): |
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65 | 59 | target[key] = value |
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66 | 60 | return target |
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67 | 61 | |
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68 | 62 | |
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69 | 63 | class JsonEncoder(json.JSONEncoder): |
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70 | 64 | """ |
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71 | 65 | A custom encoder extending the default JSONEncoder |
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72 | 66 | """ |
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73 | 67 | |
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74 | 68 | def default(self, obj): |
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75 | 69 | if isinstance(obj, (date, datetime, time)): |
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76 | 70 | return self.format_datetime_obj(obj) |
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77 | 71 | |
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78 | 72 | elif istraceback(obj): |
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79 | 73 | return ''.join(traceback.format_tb(obj)).strip() |
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80 | 74 | |
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81 | 75 | elif type(obj) == Exception \ |
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82 | 76 | or isinstance(obj, Exception) \ |
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83 | 77 | or type(obj) == type: |
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84 | 78 | return str(obj) |
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85 | 79 | |
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86 | 80 | try: |
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87 | 81 | return super().default(obj) |
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88 | 82 | |
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89 | 83 | except TypeError: |
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90 | 84 | try: |
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91 | 85 | return str(obj) |
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92 | 86 | |
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93 | 87 | except Exception: |
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94 | 88 | return None |
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95 | 89 | |
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96 | 90 | def format_datetime_obj(self, obj): |
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97 | 91 | return obj.isoformat() |
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98 | 92 | |
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99 | 93 | |
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100 | 94 | class JsonFormatter(ExceptionAwareFormatter): |
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101 | 95 | """ |
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102 | 96 | A custom formatter to format logging records as json strings. |
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103 | 97 | Extra values will be formatted as str() if not supported by |
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104 | 98 | json default encoder |
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105 | 99 | """ |
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106 | 100 | |
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107 | 101 | def __init__(self, *args, **kwargs): |
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108 | 102 | """ |
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109 | 103 | :param json_default: a function for encoding non-standard objects |
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110 | 104 | as outlined in http://docs.python.org/2/library/json.html |
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111 | 105 | :param json_encoder: optional custom encoder |
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112 | 106 | :param json_serializer: a :meth:`json.dumps`-compatible callable |
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113 | 107 | that will be used to serialize the log record. |
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114 | 108 | :param json_indent: an optional :meth:`json.dumps`-compatible numeric value |
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115 | 109 | that will be used to customize the indent of the output json. |
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116 | 110 | :param prefix: an optional string prefix added at the beginning of |
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117 | 111 | the formatted string |
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118 | 112 | :param json_indent: indent parameter for json.dumps |
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119 | 113 | :param json_ensure_ascii: ensure_ascii parameter for json.dumps |
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120 | 114 | :param reserved_attrs: an optional list of fields that will be skipped when |
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121 | 115 | outputting json log record. Defaults to all log record attributes: |
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122 | 116 | http://docs.python.org/library/logging.html#logrecord-attributes |
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123 | 117 | :param timestamp: an optional string/boolean field to add a timestamp when |
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124 | 118 | outputting the json log record. If string is passed, timestamp will be added |
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125 | 119 | to log record using string as key. If True boolean is passed, timestamp key |
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126 | 120 | will be "timestamp". Defaults to False/off. |
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127 | 121 | """ |
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128 | 122 | self.json_default = self._str_to_fn(kwargs.pop("json_default", None)) |
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129 | 123 | self.json_encoder = self._str_to_fn(kwargs.pop("json_encoder", None)) |
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130 | 124 | self.json_serializer = self._str_to_fn(kwargs.pop("json_serializer", json.dumps)) |
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131 | 125 | self.json_indent = kwargs.pop("json_indent", None) |
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132 | 126 | self.json_ensure_ascii = kwargs.pop("json_ensure_ascii", True) |
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133 | 127 | self.prefix = kwargs.pop("prefix", "") |
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134 | 128 | reserved_attrs = kwargs.pop("reserved_attrs", RESERVED_ATTRS) |
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135 | 129 | self.reserved_attrs = dict(list(zip(reserved_attrs, reserved_attrs))) |
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136 | 130 | self.timestamp = kwargs.pop("timestamp", True) |
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137 | 131 | |
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138 | 132 | # super(JsonFormatter, self).__init__(*args, **kwargs) |
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139 | 133 | logging.Formatter.__init__(self, *args, **kwargs) |
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140 | 134 | if not self.json_encoder and not self.json_default: |
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141 | 135 | self.json_encoder = JsonEncoder |
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142 | 136 | |
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143 | 137 | self._required_fields = self.parse() |
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144 | 138 | self._skip_fields = dict(list(zip(self._required_fields, |
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145 | 139 | self._required_fields))) |
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146 | 140 | self._skip_fields.update(self.reserved_attrs) |
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147 | 141 | |
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148 | 142 | def _str_to_fn(self, fn_as_str): |
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149 | 143 | """ |
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150 | 144 | If the argument is not a string, return whatever was passed in. |
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151 | 145 | Parses a string such as package.module.function, imports the module |
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152 | 146 | and returns the function. |
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153 | 147 | |
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154 | 148 | :param fn_as_str: The string to parse. If not a string, return it. |
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155 | 149 | """ |
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156 | 150 | if not isinstance(fn_as_str, str): |
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157 | 151 | return fn_as_str |
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158 | 152 | |
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159 | 153 | path, _, function = fn_as_str.rpartition('.') |
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160 | 154 | module = importlib.import_module(path) |
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161 | 155 | return getattr(module, function) |
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162 | 156 | |
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163 | 157 | def parse(self): |
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164 | 158 | """ |
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165 | 159 | Parses format string looking for substitutions |
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166 | 160 | |
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167 | 161 | This method is responsible for returning a list of fields (as strings) |
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168 | 162 | to include in all log messages. |
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169 | 163 | """ |
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170 | 164 | standard_formatters = re.compile(r'\((.+?)\)', re.IGNORECASE) |
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171 | 165 | return standard_formatters.findall(self._fmt) |
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172 | 166 | |
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173 | 167 | def add_fields(self, log_record, record, message_dict): |
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174 | 168 | """ |
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175 | 169 | Override this method to implement custom logic for adding fields. |
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176 | 170 | """ |
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177 | 171 | for field in self._required_fields: |
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178 | 172 | log_record[field] = record.__dict__.get(field) |
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179 | 173 | log_record.update(message_dict) |
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180 | 174 | merge_record_extra(record, log_record, reserved=self._skip_fields) |
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181 | 175 | |
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182 | 176 | if self.timestamp: |
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183 | 177 | key = self.timestamp if type(self.timestamp) == str else 'timestamp' |
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184 | 178 | log_record[key] = datetime.fromtimestamp(record.created, tz=utc) |
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185 | 179 | |
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186 | 180 | def process_log_record(self, log_record): |
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187 | 181 | """ |
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188 | 182 | Override this method to implement custom logic |
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189 | 183 | on the possibly ordered dictionary. |
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190 | 184 | """ |
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191 | 185 | return log_record |
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192 | 186 | |
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193 | 187 | def jsonify_log_record(self, log_record): |
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194 | 188 | """Returns a json string of the log record.""" |
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195 | 189 | return self.json_serializer(log_record, |
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196 | 190 | default=self.json_default, |
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197 | 191 | cls=self.json_encoder, |
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198 | 192 | indent=self.json_indent, |
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199 | 193 | ensure_ascii=self.json_ensure_ascii) |
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200 | 194 | |
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201 | 195 | def serialize_log_record(self, log_record): |
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202 | 196 | """Returns the final representation of the log record.""" |
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203 | 197 | return "{}{}".format(self.prefix, self.jsonify_log_record(log_record)) |
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204 | 198 | |
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205 | 199 | def format(self, record): |
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206 | 200 | """Formats a log record and serializes to json""" |
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207 | 201 | message_dict = {} |
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208 | 202 | # FIXME: logging.LogRecord.msg and logging.LogRecord.message in typeshed |
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209 | 203 | # are always type of str. We shouldn't need to override that. |
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210 | 204 | if isinstance(record.msg, dict): |
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211 | 205 | message_dict = record.msg |
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212 | 206 | record.message = None |
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213 | 207 | else: |
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214 | 208 | record.message = record.getMessage() |
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215 | 209 | # only format time if needed |
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216 | 210 | if "asctime" in self._required_fields: |
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217 | 211 | record.asctime = self.formatTime(record, self.datefmt) |
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218 | 212 | |
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219 | 213 | # Display formatted exception, but allow overriding it in the |
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220 | 214 | # user-supplied dict. |
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221 | 215 | if record.exc_info and not message_dict.get('exc_info'): |
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222 | 216 | message_dict['exc_info'] = self.formatException(record.exc_info) |
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223 | 217 | if not message_dict.get('exc_info') and record.exc_text: |
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224 | 218 | message_dict['exc_info'] = record.exc_text |
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225 | 219 | # Display formatted record of stack frames |
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226 | 220 | # default format is a string returned from :func:`traceback.print_stack` |
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227 | 221 | try: |
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228 | 222 | if record.stack_info and not message_dict.get('stack_info'): |
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229 | 223 | message_dict['stack_info'] = self.formatStack(record.stack_info) |
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230 | 224 | except AttributeError: |
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231 | 225 | # Python2.7 doesn't have stack_info. |
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232 | 226 | pass |
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233 | 227 | |
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234 | 228 | try: |
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235 | 229 | log_record = OrderedDict() |
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236 | 230 | except NameError: |
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237 | 231 | log_record = {} |
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238 | 232 | |
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239 | 233 | _inject_req_id(record, with_prefix=False) |
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240 | 234 | self.add_fields(log_record, record, message_dict) |
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241 | 235 | log_record = self.process_log_record(log_record) |
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242 | 236 | |
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243 | 237 | return self.serialize_log_record(log_record) |
@@ -1,394 +1,402 b'' | |||
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1 | 1 | |
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2 | 2 | import threading |
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3 | 3 | import weakref |
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4 | 4 | from base64 import b64encode |
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5 | 5 | from logging import getLogger |
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6 | 6 | from os import urandom |
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7 | 7 | from typing import Union |
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8 | 8 | |
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9 | 9 | from redis import StrictRedis |
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10 | 10 | |
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11 | 11 | __version__ = '4.0.0' |
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12 | 12 | |
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13 | 13 | loggers = { |
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14 | 14 | k: getLogger("vcsserver." + ".".join((__name__, k))) |
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15 | 15 | for k in [ |
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16 | 16 | "acquire", |
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17 | 17 | "refresh.thread.start", |
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18 | 18 | "refresh.thread.stop", |
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19 | 19 | "refresh.thread.exit", |
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20 | 20 | "refresh.start", |
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21 | 21 | "refresh.shutdown", |
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22 | 22 | "refresh.exit", |
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23 | 23 | "release", |
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24 | 24 | ] |
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25 | 25 | } |
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26 | 26 | |
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27 | 27 | text_type = str |
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28 | 28 | binary_type = bytes |
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29 | 29 | |
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30 | 30 | |
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31 | 31 | # Check if the id match. If not, return an error code. |
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32 | 32 | UNLOCK_SCRIPT = b""" |
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33 | 33 | if redis.call("get", KEYS[1]) ~= ARGV[1] then |
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34 | 34 | return 1 |
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35 | 35 | else |
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36 | 36 | redis.call("del", KEYS[2]) |
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37 | 37 | redis.call("lpush", KEYS[2], 1) |
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38 | 38 | redis.call("pexpire", KEYS[2], ARGV[2]) |
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39 | 39 | redis.call("del", KEYS[1]) |
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40 | 40 | return 0 |
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41 | 41 | end |
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42 | 42 | """ |
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43 | 43 | |
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44 | 44 | # Covers both cases when key doesn't exist and doesn't equal to lock's id |
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45 | 45 | EXTEND_SCRIPT = b""" |
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46 | 46 | if redis.call("get", KEYS[1]) ~= ARGV[1] then |
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47 | 47 | return 1 |
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48 | 48 | elseif redis.call("ttl", KEYS[1]) < 0 then |
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49 | 49 | return 2 |
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50 | 50 | else |
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51 | 51 | redis.call("expire", KEYS[1], ARGV[2]) |
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52 | 52 | return 0 |
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53 | 53 | end |
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54 | 54 | """ |
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55 | 55 | |
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56 | 56 | RESET_SCRIPT = b""" |
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57 | 57 | redis.call('del', KEYS[2]) |
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58 | 58 | redis.call('lpush', KEYS[2], 1) |
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59 | 59 | redis.call('pexpire', KEYS[2], ARGV[2]) |
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60 | 60 | return redis.call('del', KEYS[1]) |
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61 | 61 | """ |
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62 | 62 | |
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63 | 63 | RESET_ALL_SCRIPT = b""" |
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64 | 64 | local locks = redis.call('keys', 'lock:*') |
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65 | 65 | local signal |
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66 | 66 | for _, lock in pairs(locks) do |
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67 | 67 | signal = 'lock-signal:' .. string.sub(lock, 6) |
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68 | 68 | redis.call('del', signal) |
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69 | 69 | redis.call('lpush', signal, 1) |
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70 | 70 | redis.call('expire', signal, 1) |
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71 | 71 | redis.call('del', lock) |
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72 | 72 | end |
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73 | 73 | return #locks |
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74 | 74 | """ |
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75 | 75 | |
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76 | 76 | |
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77 | 77 | class AlreadyAcquired(RuntimeError): |
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78 | 78 | pass |
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79 | 79 | |
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80 | 80 | |
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81 | 81 | class NotAcquired(RuntimeError): |
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82 | 82 | pass |
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83 | 83 | |
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84 | 84 | |
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85 | 85 | class AlreadyStarted(RuntimeError): |
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86 | 86 | pass |
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87 | 87 | |
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88 | 88 | |
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89 | 89 | class TimeoutNotUsable(RuntimeError): |
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90 | 90 | pass |
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91 | 91 | |
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92 | 92 | |
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93 | 93 | class InvalidTimeout(RuntimeError): |
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94 | 94 | pass |
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95 | 95 | |
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96 | 96 | |
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97 | 97 | class TimeoutTooLarge(RuntimeError): |
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98 | 98 | pass |
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99 | 99 | |
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100 | 100 | |
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101 | 101 | class NotExpirable(RuntimeError): |
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102 | 102 | pass |
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103 | 103 | |
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104 | 104 | |
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105 | 105 | class Lock: |
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106 | 106 | """ |
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107 | 107 | A Lock context manager implemented via redis SETNX/BLPOP. |
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108 | 108 | """ |
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109 | 109 | |
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110 | 110 | unlock_script = None |
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111 | 111 | extend_script = None |
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112 | 112 | reset_script = None |
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113 | 113 | reset_all_script = None |
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114 | blocking = None | |
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114 | 115 | |
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115 | 116 | _lock_renewal_interval: float |
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116 | 117 | _lock_renewal_thread: Union[threading.Thread, None] |
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117 | 118 | |
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118 | def __init__(self, redis_client, name, expire=None, id=None, auto_renewal=False, strict=True, signal_expire=1000): | |
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119 | def __init__(self, redis_client, name, expire=None, id=None, auto_renewal=False, strict=True, signal_expire=1000, blocking=True): | |
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119 | 120 | """ |
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120 | 121 | :param redis_client: |
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121 | 122 | An instance of :class:`~StrictRedis`. |
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122 | 123 | :param name: |
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123 | 124 | The name (redis key) the lock should have. |
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124 | 125 | :param expire: |
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125 | 126 | The lock expiry time in seconds. If left at the default (None) |
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126 | 127 | the lock will not expire. |
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127 | 128 | :param id: |
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128 | 129 | The ID (redis value) the lock should have. A random value is |
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129 | 130 | generated when left at the default. |
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130 | 131 | |
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131 | 132 | Note that if you specify this then the lock is marked as "held". Acquires |
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132 | 133 | won't be possible. |
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133 | 134 | :param auto_renewal: |
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134 | 135 | If set to ``True``, Lock will automatically renew the lock so that it |
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135 | 136 | doesn't expire for as long as the lock is held (acquire() called |
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136 | 137 | or running in a context manager). |
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137 | 138 | |
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138 | 139 | Implementation note: Renewal will happen using a daemon thread with |
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139 | 140 | an interval of ``expire*2/3``. If wishing to use a different renewal |
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140 | 141 | time, subclass Lock, call ``super().__init__()`` then set |
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141 | 142 | ``self._lock_renewal_interval`` to your desired interval. |
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142 | 143 | :param strict: |
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143 | 144 | If set ``True`` then the ``redis_client`` needs to be an instance of ``redis.StrictRedis``. |
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144 | 145 | :param signal_expire: |
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145 | 146 | Advanced option to override signal list expiration in milliseconds. Increase it for very slow clients. Default: ``1000``. |
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147 | :param blocking: | |
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148 | Boolean value specifying whether lock should be blocking or not. | |
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149 | Used in `__enter__` method. | |
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146 | 150 | """ |
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147 | 151 | if strict and not isinstance(redis_client, StrictRedis): |
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148 | 152 | raise ValueError("redis_client must be instance of StrictRedis. " |
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149 | 153 | "Use strict=False if you know what you're doing.") |
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150 | 154 | if auto_renewal and expire is None: |
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151 | 155 | raise ValueError("Expire may not be None when auto_renewal is set") |
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152 | 156 | |
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153 | 157 | self._client = redis_client |
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154 | 158 | |
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155 | 159 | if expire: |
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156 | 160 | expire = int(expire) |
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157 | 161 | if expire < 0: |
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158 | 162 | raise ValueError("A negative expire is not acceptable.") |
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159 | 163 | else: |
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160 | 164 | expire = None |
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161 | 165 | self._expire = expire |
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162 | 166 | |
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163 | 167 | self._signal_expire = signal_expire |
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164 | 168 | if id is None: |
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165 | 169 | self._id = b64encode(urandom(18)).decode('ascii') |
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166 | 170 | elif isinstance(id, binary_type): |
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167 | 171 | try: |
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168 | 172 | self._id = id.decode('ascii') |
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169 | 173 | except UnicodeDecodeError: |
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170 | 174 | self._id = b64encode(id).decode('ascii') |
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171 | 175 | elif isinstance(id, text_type): |
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172 | 176 | self._id = id |
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173 | 177 | else: |
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174 | 178 | raise TypeError(f"Incorrect type for `id`. Must be bytes/str not {type(id)}.") |
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175 | 179 | self._name = 'lock:' + name |
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176 | 180 | self._signal = 'lock-signal:' + name |
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177 | 181 | self._lock_renewal_interval = (float(expire) * 2 / 3 |
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178 | 182 | if auto_renewal |
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179 | 183 | else None) |
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180 | 184 | self._lock_renewal_thread = None |
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181 | 185 | |
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186 | self.blocking = blocking | |
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187 | ||
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182 | 188 | self.register_scripts(redis_client) |
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183 | 189 | |
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184 | 190 | @classmethod |
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185 | 191 | def register_scripts(cls, redis_client): |
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186 | 192 | global reset_all_script |
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187 | 193 | if reset_all_script is None: |
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188 | 194 | cls.unlock_script = redis_client.register_script(UNLOCK_SCRIPT) |
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189 | 195 | cls.extend_script = redis_client.register_script(EXTEND_SCRIPT) |
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190 | 196 | cls.reset_script = redis_client.register_script(RESET_SCRIPT) |
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191 | 197 | cls.reset_all_script = redis_client.register_script(RESET_ALL_SCRIPT) |
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192 | 198 | reset_all_script = redis_client.register_script(RESET_ALL_SCRIPT) |
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193 | 199 | |
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194 | 200 | @property |
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195 | 201 | def _held(self): |
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196 | 202 | return self.id == self.get_owner_id() |
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197 | 203 | |
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198 | 204 | def reset(self): |
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199 | 205 | """ |
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200 | 206 | Forcibly deletes the lock. Use this with care. |
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201 | 207 | """ |
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202 | 208 | self.reset_script(client=self._client, keys=(self._name, self._signal), args=(self.id, self._signal_expire)) |
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203 | 209 | |
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204 | 210 | @property |
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205 | 211 | def id(self): |
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206 | 212 | return self._id |
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207 | 213 | |
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208 | 214 | def get_owner_id(self): |
|
209 | 215 | owner_id = self._client.get(self._name) |
|
210 | 216 | if isinstance(owner_id, binary_type): |
|
211 | 217 | owner_id = owner_id.decode('ascii', 'replace') |
|
212 | 218 | return owner_id |
|
213 | 219 | |
|
214 | 220 | def acquire(self, blocking=True, timeout=None): |
|
215 | 221 | """ |
|
216 | 222 | :param blocking: |
|
217 | 223 | Boolean value specifying whether lock should be blocking or not. |
|
218 | 224 | :param timeout: |
|
219 | 225 | An integer value specifying the maximum number of seconds to block. |
|
220 | 226 | """ |
|
221 | 227 | logger = loggers["acquire"] |
|
222 | 228 | |
|
223 | 229 | logger.debug("Getting blocking: %s acquire on %r ...", blocking, self._name) |
|
224 | 230 | |
|
225 | 231 | if self._held: |
|
226 | 232 | owner_id = self.get_owner_id() |
|
227 | 233 | raise AlreadyAcquired("Already acquired from this Lock instance. Lock id: {}".format(owner_id)) |
|
228 | 234 | |
|
229 | 235 | if not blocking and timeout is not None: |
|
230 | 236 | raise TimeoutNotUsable("Timeout cannot be used if blocking=False") |
|
231 | 237 | |
|
232 | 238 | if timeout: |
|
233 | 239 | timeout = int(timeout) |
|
234 | 240 | if timeout < 0: |
|
235 | 241 | raise InvalidTimeout(f"Timeout ({timeout}) cannot be less than or equal to 0") |
|
236 | 242 | |
|
237 | 243 | if self._expire and not self._lock_renewal_interval and timeout > self._expire: |
|
238 | 244 | raise TimeoutTooLarge(f"Timeout ({timeout}) cannot be greater than expire ({self._expire})") |
|
239 | 245 | |
|
240 | 246 | busy = True |
|
241 | 247 | blpop_timeout = timeout or self._expire or 0 |
|
242 | 248 | timed_out = False |
|
243 | 249 | while busy: |
|
244 | 250 | busy = not self._client.set(self._name, self._id, nx=True, ex=self._expire) |
|
245 | 251 | if busy: |
|
246 | 252 | if timed_out: |
|
247 | 253 | return False |
|
248 | 254 | elif blocking: |
|
249 | 255 | timed_out = not self._client.blpop(self._signal, blpop_timeout) and timeout |
|
250 | 256 | else: |
|
251 | 257 | logger.warning("Failed to acquire Lock(%r).", self._name) |
|
252 | 258 | return False |
|
253 | 259 | |
|
254 | 260 | logger.debug("Acquired Lock(%r).", self._name) |
|
255 | 261 | if self._lock_renewal_interval is not None: |
|
256 | 262 | self._start_lock_renewer() |
|
257 | 263 | return True |
|
258 | 264 | |
|
259 | 265 | def extend(self, expire=None): |
|
260 | 266 | """ |
|
261 | 267 | Extends expiration time of the lock. |
|
262 | 268 | |
|
263 | 269 | :param expire: |
|
264 | 270 | New expiration time. If ``None`` - `expire` provided during |
|
265 | 271 | lock initialization will be taken. |
|
266 | 272 | """ |
|
267 | 273 | if expire: |
|
268 | 274 | expire = int(expire) |
|
269 | 275 | if expire < 0: |
|
270 | 276 | raise ValueError("A negative expire is not acceptable.") |
|
271 | 277 | elif self._expire is not None: |
|
272 | 278 | expire = self._expire |
|
273 | 279 | else: |
|
274 | 280 | raise TypeError( |
|
275 | 281 | "To extend a lock 'expire' must be provided as an " |
|
276 | 282 | "argument to extend() method or at initialization time." |
|
277 | 283 | ) |
|
278 | 284 | |
|
279 | 285 | error = self.extend_script(client=self._client, keys=(self._name, self._signal), args=(self._id, expire)) |
|
280 | 286 | if error == 1: |
|
281 | 287 | raise NotAcquired(f"Lock {self._name} is not acquired or it already expired.") |
|
282 | 288 | elif error == 2: |
|
283 | 289 | raise NotExpirable(f"Lock {self._name} has no assigned expiration time") |
|
284 | 290 | elif error: |
|
285 | 291 | raise RuntimeError(f"Unsupported error code {error} from EXTEND script") |
|
286 | 292 | |
|
287 | 293 | @staticmethod |
|
288 | 294 | def _lock_renewer(name, lockref, interval, stop): |
|
289 | 295 | """ |
|
290 | 296 | Renew the lock key in redis every `interval` seconds for as long |
|
291 | 297 | as `self._lock_renewal_thread.should_exit` is False. |
|
292 | 298 | """ |
|
293 | 299 | while not stop.wait(timeout=interval): |
|
294 | 300 | loggers["refresh.thread.start"].debug("Refreshing Lock(%r).", name) |
|
295 | 301 | lock: "Lock" = lockref() |
|
296 | 302 | if lock is None: |
|
297 | 303 | loggers["refresh.thread.stop"].debug( |
|
298 | 304 | "Stopping loop because Lock(%r) was garbage collected.", name |
|
299 | 305 | ) |
|
300 | 306 | break |
|
301 | 307 | lock.extend(expire=lock._expire) |
|
302 | 308 | del lock |
|
303 | 309 | loggers["refresh.thread.exit"].debug("Exiting renewal thread for Lock(%r).", name) |
|
304 | 310 | |
|
305 | 311 | def _start_lock_renewer(self): |
|
306 | 312 | """ |
|
307 | 313 | Starts the lock refresher thread. |
|
308 | 314 | """ |
|
309 | 315 | if self._lock_renewal_thread is not None: |
|
310 | 316 | raise AlreadyStarted("Lock refresh thread already started") |
|
311 | 317 | |
|
312 | 318 | loggers["refresh.start"].debug( |
|
313 | 319 | "Starting renewal thread for Lock(%r). Refresh interval: %s seconds.", |
|
314 | 320 | self._name, self._lock_renewal_interval |
|
315 | 321 | ) |
|
316 | 322 | self._lock_renewal_stop = threading.Event() |
|
317 | 323 | self._lock_renewal_thread = threading.Thread( |
|
318 | 324 | group=None, |
|
319 | 325 | target=self._lock_renewer, |
|
320 | 326 | kwargs={ |
|
321 | 327 | 'name': self._name, |
|
322 | 328 | 'lockref': weakref.ref(self), |
|
323 | 329 | 'interval': self._lock_renewal_interval, |
|
324 | 330 | 'stop': self._lock_renewal_stop, |
|
325 | 331 | }, |
|
326 | 332 | ) |
|
327 | 333 | self._lock_renewal_thread.daemon = True |
|
328 | 334 | self._lock_renewal_thread.start() |
|
329 | 335 | |
|
330 | 336 | def _stop_lock_renewer(self): |
|
331 | 337 | """ |
|
332 | 338 | Stop the lock renewer. |
|
333 | 339 | |
|
334 | 340 | This signals the renewal thread and waits for its exit. |
|
335 | 341 | """ |
|
336 | 342 | if self._lock_renewal_thread is None or not self._lock_renewal_thread.is_alive(): |
|
337 | 343 | return |
|
338 | 344 | loggers["refresh.shutdown"].debug("Signaling renewal thread for Lock(%r) to exit.", self._name) |
|
339 | 345 | self._lock_renewal_stop.set() |
|
340 | 346 | self._lock_renewal_thread.join() |
|
341 | 347 | self._lock_renewal_thread = None |
|
342 | 348 | loggers["refresh.exit"].debug("Renewal thread for Lock(%r) exited.", self._name) |
|
343 | 349 | |
|
344 | 350 | def __enter__(self): |
|
345 |
acquired = self.acquire(blocking= |
|
|
351 | acquired = self.acquire(blocking=self.blocking) | |
|
346 | 352 | if not acquired: |
|
353 | if self.blocking: | |
|
347 | 354 | raise AssertionError(f"Lock({self._name}) wasn't acquired, but blocking=True was used!") |
|
355 | raise NotAcquired(f"Lock({self._name}) is not acquired or it already expired.") | |
|
348 | 356 | return self |
|
349 | 357 | |
|
350 | 358 | def __exit__(self, exc_type=None, exc_value=None, traceback=None): |
|
351 | 359 | self.release() |
|
352 | 360 | |
|
353 | 361 | def release(self): |
|
354 | 362 | """Releases the lock, that was acquired with the same object. |
|
355 | 363 | |
|
356 | 364 | .. note:: |
|
357 | 365 | |
|
358 | 366 | If you want to release a lock that you acquired in a different place you have two choices: |
|
359 | 367 | |
|
360 | 368 | * Use ``Lock("name", id=id_from_other_place).release()`` |
|
361 | 369 | * Use ``Lock("name").reset()`` |
|
362 | 370 | """ |
|
363 | 371 | if self._lock_renewal_thread is not None: |
|
364 | 372 | self._stop_lock_renewer() |
|
365 | 373 | loggers["release"].debug("Releasing Lock(%r).", self._name) |
|
366 | 374 | error = self.unlock_script(client=self._client, keys=(self._name, self._signal), args=(self._id, self._signal_expire)) |
|
367 | 375 | if error == 1: |
|
368 | 376 | raise NotAcquired(f"Lock({self._name}) is not acquired or it already expired.") |
|
369 | 377 | elif error: |
|
370 | 378 | raise RuntimeError(f"Unsupported error code {error} from EXTEND script.") |
|
371 | 379 | |
|
372 | 380 | def locked(self): |
|
373 | 381 | """ |
|
374 | 382 | Return true if the lock is acquired. |
|
375 | 383 | |
|
376 | 384 | Checks that lock with same name already exists. This method returns true, even if |
|
377 | 385 | lock have another id. |
|
378 | 386 | """ |
|
379 | 387 | return self._client.exists(self._name) == 1 |
|
380 | 388 | |
|
381 | 389 | |
|
382 | 390 | reset_all_script = None |
|
383 | 391 | |
|
384 | 392 | |
|
385 | 393 | def reset_all(redis_client): |
|
386 | 394 | """ |
|
387 | 395 | Forcibly deletes all locks if its remains (like a crash reason). Use this with care. |
|
388 | 396 | |
|
389 | 397 | :param redis_client: |
|
390 | 398 | An instance of :class:`~StrictRedis`. |
|
391 | 399 | """ |
|
392 | 400 | Lock.register_scripts(redis_client) |
|
393 | 401 | |
|
394 | 402 | reset_all_script(client=redis_client) # noqa |
@@ -1,50 +1,51 b'' | |||
|
1 | 1 | import logging |
|
2 | 2 | |
|
3 | 3 | from .stream import TCPStatsClient, UnixSocketStatsClient # noqa |
|
4 | 4 | from .udp import StatsClient # noqa |
|
5 | 5 | |
|
6 | 6 | HOST = 'localhost' |
|
7 | 7 | PORT = 8125 |
|
8 | 8 | IPV6 = False |
|
9 | 9 | PREFIX = None |
|
10 | 10 | MAXUDPSIZE = 512 |
|
11 | 11 | |
|
12 | 12 | log = logging.getLogger('rhodecode.statsd') |
|
13 | 13 | |
|
14 | 14 | |
|
15 | 15 | def statsd_config(config, prefix='statsd.'): |
|
16 | 16 | _config = {} |
|
17 | for key in config.keys(): | |
|
17 | for key in list(config.keys()): | |
|
18 | 18 | if key.startswith(prefix): |
|
19 | 19 | _config[key[len(prefix):]] = config[key] |
|
20 | 20 | return _config |
|
21 | 21 | |
|
22 | 22 | |
|
23 | 23 | def client_from_config(configuration, prefix='statsd.', **kwargs): |
|
24 | 24 | from pyramid.settings import asbool |
|
25 | 25 | |
|
26 | 26 | _config = statsd_config(configuration, prefix) |
|
27 | statsd_flag = _config.get('enabled') | |
|
27 | 28 | statsd_enabled = asbool(_config.pop('enabled', False)) |
|
28 | 29 | if not statsd_enabled: |
|
29 | log.debug('statsd client not enabled by statsd.enabled = flag, skipping...') | |
|
30 | log.debug('statsd client not enabled by statsd.enabled = %s flag, skipping...', statsd_flag) | |
|
30 | 31 | return |
|
31 | 32 | |
|
32 | 33 | host = _config.pop('statsd_host', HOST) |
|
33 | 34 | port = _config.pop('statsd_port', PORT) |
|
34 | 35 | prefix = _config.pop('statsd_prefix', PREFIX) |
|
35 | 36 | maxudpsize = _config.pop('statsd_maxudpsize', MAXUDPSIZE) |
|
36 | 37 | ipv6 = asbool(_config.pop('statsd_ipv6', IPV6)) |
|
37 | 38 | log.debug('configured statsd client %s:%s', host, port) |
|
38 | 39 | |
|
39 | 40 | try: |
|
40 | 41 | client = StatsClient( |
|
41 | 42 | host=host, port=port, prefix=prefix, maxudpsize=maxudpsize, ipv6=ipv6) |
|
42 | 43 | except Exception: |
|
43 | 44 | log.exception('StatsD is enabled, but failed to connect to statsd server, fallback: disable statsd') |
|
44 | 45 | client = None |
|
45 | 46 | |
|
46 | 47 | return client |
|
47 | 48 | |
|
48 | 49 | |
|
49 | 50 | def get_statsd_client(request): |
|
50 | 51 | return client_from_config(request.registry.settings) |
@@ -1,2 +1,14 b'' | |||
|
1 | # use orjson by default | |
|
1 | import json as stdlib_json | |
|
2 | ||
|
3 | try: | |
|
4 | # we keep simplejson for having dump functionality still | |
|
5 | # orjson doesn't support it | |
|
6 | import simplejson as sjson | |
|
7 | except ImportError: | |
|
8 | sjson = stdlib_json | |
|
9 | ||
|
10 | try: | |
|
11 | import orjson | |
|
2 | 12 | import orjson as json |
|
13 | except ImportError: | |
|
14 | json = stdlib_json |
@@ -1,53 +1,63 b'' | |||
|
1 | 1 | # Copyright (C) 2010-2023 RhodeCode GmbH |
|
2 | 2 | # |
|
3 | 3 | # This program is free software: you can redistribute it and/or modify |
|
4 | 4 | # it under the terms of the GNU Affero General Public License, version 3 |
|
5 | 5 | # (only), as published by the Free Software Foundation. |
|
6 | 6 | # |
|
7 | 7 | # This program is distributed in the hope that it will be useful, |
|
8 | 8 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
9 | 9 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
10 | 10 | # GNU General Public License for more details. |
|
11 | 11 | # |
|
12 | 12 | # You should have received a copy of the GNU Affero General Public License |
|
13 | 13 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
|
14 | 14 | # |
|
15 | 15 | # This program is dual-licensed. If you wish to learn more about the |
|
16 | 16 | # RhodeCode Enterprise Edition, including its added features, Support services, |
|
17 | 17 | # and proprietary license terms, please see https://rhodecode.com/licenses/ |
|
18 | 18 | |
|
19 | 19 | import sys |
|
20 | 20 | import logging |
|
21 | 21 | |
|
22 | 22 | |
|
23 | 23 | BLACK, RED, GREEN, YELLOW, BLUE, MAGENTA, CYAN, WHITE = list(range(30, 38)) |
|
24 | 24 | |
|
25 | 25 | # Sequences |
|
26 | 26 | RESET_SEQ = "\033[0m" |
|
27 | 27 | COLOR_SEQ = "\033[0;%dm" |
|
28 | 28 | BOLD_SEQ = "\033[1m" |
|
29 | 29 | |
|
30 | 30 | COLORS = { |
|
31 | 31 | 'CRITICAL': MAGENTA, |
|
32 | 32 | 'ERROR': RED, |
|
33 | 33 | 'WARNING': CYAN, |
|
34 | 34 | 'INFO': GREEN, |
|
35 | 35 | 'DEBUG': BLUE, |
|
36 | 36 | 'SQL': YELLOW |
|
37 | 37 | } |
|
38 | 38 | |
|
39 | 39 | |
|
40 | def _inject_req_id(record, *args, **kwargs): | |
|
41 | return record | |
|
42 | ||
|
43 | ||
|
44 | class ExceptionAwareFormatter(logging.Formatter): | |
|
45 | pass | |
|
46 | ||
|
47 | ||
|
40 | 48 | class ColorFormatter(logging.Formatter): |
|
41 | 49 | |
|
42 | 50 | def format(self, record): |
|
43 | 51 | """ |
|
44 | Change record's levelname to use with COLORS enum | |
|
52 | Changes record's levelname to use with COLORS enum | |
|
45 | 53 | """ |
|
46 | 54 | def_record = super().format(record) |
|
47 | 55 | |
|
48 | 56 | levelname = record.levelname |
|
49 | 57 | start = COLOR_SEQ % (COLORS[levelname]) |
|
50 | 58 | end = RESET_SEQ |
|
51 | 59 | |
|
52 | 60 | colored_record = ''.join([start, def_record, end]) |
|
53 | 61 | return colored_record |
|
62 | ||
|
63 |
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