twist_controller_config.py

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#!/usr/bin/env python
#
# Copyright 2017 Fraunhofer Institute for Manufacturing Engineering and Automation (IPA)
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
 
 
import rospy
from dynamic_reconfigure.client import Client
from cob_twist_controller.cfg.TwistControllerConfig import *
 
'''
Available keys for the dynamic_reconfigure update call
'''
NUM_FILT = 'numerical_filtering'
DAMP_METHOD = 'damping_method'
DAMP_FACT = 'damping_factor'
LAMBDA_MAX = 'lambda_max'
W_THRESH = 'w_threshold'
SLOPE_DAMPING='slope_damping'
BETA = 'beta'
EPS_DAMP = 'eps_damping'
EPS_TRUNC = 'eps_truncation'
 
SOLVER = 'solver'
PRIO = 'priority'
K_H = 'k_H'
 
CONSTR_JLA = 'constraint_jla'
PRIO_JLA = 'priority_jla'
K_H_JLA = 'k_H_jla'
ACTIV_THRESH_JLA = 'activation_threshold_jla'
ACTIV_BUF_JLA = 'activation_buffer_jla'
CRIT_THRESH_JLA = 'critical_threshold_jla'
DAMP_JLA = 'damping_jla'
 
CONSTR_CA = 'constraint_ca'
PRIO_CA = 'priority_ca'
K_H_CA = 'k_H_ca'
ACTIV_THRESH_CA = 'activation_threshold_ca'
ACTIV_BUF_CA = 'activation_buffer_ca'
CRIT_THRESH_CA = 'critical_threshold_ca'
DAMP_CA = 'damping_ca'
 
SIGMA_UJS = 'sigma_ujs'
SIGMA_SPEED_UJS = 'sigma_speed_ujs'
DELTA_POS_UJS = 'delta_pos_ujs'
SIGMA_SPEED_UJS = 'delta_speed_ujs'
 
KEEP_DIR = 'keep_direction'
ENF_POS_LIM = 'enforce_pos_limits'
ENF_VEL_LIM = 'enforce_vel_limits'
ENF_ACC_LIM = 'enforce_acc_limits'
TOL = 'limits_tolerance'
MAX_VEL_LIN_BASE = 'max_vel_lin_base'
MAX_VEL_ROT_BASE = 'max_vel_rot_base'
 
KIN_EXT = 'kinematic_extension'
EXT_RATIO = 'extension_ratio'
 
'''
Class inherits from dynamic_reconfigure.client.Client and implements some wrapper methods
'''
class TwistControllerReconfigureClient(Client):
 
    def __init__(self, timeout = None):
        super(TwistControllerReconfigureClient, self).__init__('twist_controller', timeout)
        self._current_config = {}
        self._update_config = {}
 
    def init(self):
        self._current_config = self.get_configuration()
        self._update_config.clear()
 
    def set_config_param(self, cfg_key, cfg_value):
        if cfg_key in self._current_config:
            self._update_config[cfg_key] = cfg_value
        else:
            rospy.logerr('Cannot update config with key {0}! Not available in current config.'.format(cfg_key))
 
    def update(self):
        self.update_configuration(self._update_config)
        self._update_config.clear()