github.com/muhammedhassanm/blockchain@v0.0.0-20200120143007-697261defd4d/sawtooth-core-master/consensus/poet/cli/sawtooth_poet_cli/config.py (about)

     1  # Copyright 2017 Intel Corporation
     2  #
     3  # Licensed under the Apache License, Version 2.0 (the "License");
     4  # you may not use this file except in compliance with the License.
     5  # You may obtain a copy of the License at
     6  #
     7  #     http://www.apache.org/licenses/LICENSE-2.0
     8  #
     9  # Unless required by applicable law or agreed to in writing, software
    10  # distributed under the License is distributed on an "AS IS" BASIS,
    11  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  # See the License for the specific language governing permissions and
    13  # limitations under the License.
    14  # ------------------------------------------------------------------------------
    15  
    16  import os
    17  import sys
    18  import toml
    19  
    20  
    21  def _select_dir(sawtooth_home_dir, windows_dir, default_dir):
    22      """Returns the directory value, selected using the SAWTOOTH_HOME
    23      environment variable (if set) or OS defaults.
    24      """
    25      if 'SAWTOOTH_HOME' in os.environ:
    26          return os.path.join(os.environ['SAWTOOTH_HOME'], sawtooth_home_dir)
    27  
    28      if os.name == 'nt':
    29          base_dir = \
    30              os.path.dirname(os.path.dirname(os.path.abspath(sys.argv[0])))
    31          return os.path.join(base_dir, windows_dir)
    32  
    33      return default_dir
    34  
    35  
    36  def get_config_dir():
    37      """Returns the sawtooth configuration directory based on the
    38      SAWTOOTH_HOME environment variable (if set) or OS defaults.
    39      """
    40      return _select_dir('etc', 'conf', '/etc/sawtooth')
    41  
    42  
    43  def _get_dir(toml_config_setting,
    44               sawtooth_home_dir,
    45               windows_dir,
    46               default_dir):
    47      """Determines the directory path based on configuration.
    48  
    49      Arguments:
    50          toml_config_setting (str): The name of the config setting related
    51              to the directory which will appear in path.toml.
    52          sawtooth_home_dir (str): The directory under the SAWTOOTH_HOME
    53              environment variable.  For example, for 'data' if the data
    54              directory is $SAWTOOTH_HOME/data.
    55          windows_dir (str): The windows path relative to the computed base
    56              directory.
    57          default_dir (str): The default path on Linux.
    58  
    59      Returns:
    60          directory (str): The path.
    61      """
    62      conf_file = os.path.join(get_config_dir(), 'path.toml')
    63      if os.path.exists(conf_file):
    64          with open(conf_file) as fd:
    65              raw_config = fd.read()
    66          toml_config = toml.loads(raw_config)
    67          if toml_config_setting in toml_config:
    68              return toml_config[toml_config_setting]
    69  
    70      return _select_dir(sawtooth_home_dir, windows_dir, default_dir)
    71  
    72  
    73  def get_data_dir():
    74      """Returns the configured data directory."""
    75      return _get_dir(
    76          toml_config_setting='data_dir',
    77          sawtooth_home_dir='data',
    78          windows_dir='data',
    79          default_dir='/var/lib/sawtooth')
    80  
    81  
    82  def get_key_dir():
    83      """Returns the configured key directory."""
    84      return _get_dir(
    85          toml_config_setting='key_dir',
    86          sawtooth_home_dir='keys',
    87          windows_dir=os.path.join('conf', 'keys'),
    88          default_dir='/etc/sawtooth/keys')