com.hpe.caf.api.BootstrapConfiguration Maven / Gradle / Ivy
/*
* Copyright 2015-2020 Micro Focus or one of its affiliates.
*
* 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.
*/
package com.hpe.caf.api;
import com.hpe.caf.naming.ServicePath;
/**
* A bootstrap configuration is a method of providing basic, initial startup configuration. This is more crude than a full
* ConfigurationProvider, and only supports trivial key/value lookups.
*/
public interface BootstrapConfiguration
{
/**
* Application identifier configuration parameter key. This must be in the format /a/b.
*/
String CONFIG_APP_NAME = "CAF_APPNAME";
/**
* Old application identifier configuration parameter key.
*/
@Deprecated
String OLD_CONFIG_APP_NAME = "caf.appname";
/**
* Determine if a configuration parameter has been set or not.
*
* @param key the config parameter to check
* @return whether the config parameter is set or not
*/
boolean isConfigurationPresent(String key);
/**
* Return the value of the requested configuration parameter.
*
* @param key the config parameter to lookup
* @return the value of the config parameter
* @throws ConfigurationException if the configuration parameter is not set
*/
String getConfiguration(String key)
throws ConfigurationException;
/**
* Return the integer representation of the requested configuration parameter.
*
* @param key the config parameter to lookup
* @return the value of the config parameter as an integer
* @throws ConfigurationException if the configuration parameter is not set
*/
int getConfigurationInteger(String key)
throws ConfigurationException;
/**
* Return the integer representation of the requested configuration parameter, between the minimum and maximum integers specified.
*
* @param key the config parameter to lookup
* @param min the lower bound of the integer to be returned
* @param max the upper bound of the integer to be returned
* @return the value of the config parameter as an integer, between the limits specified
* @throws ConfigurationException if the configuration parameter is not set
*/
int getConfigurationInteger(String key, int min, int max)
throws ConfigurationException;
/**
* Return the boolean representation of the requested configuration parameter.
*
* @param key the config parameter to lookup
* @return the value of the config parameter as an integer
* @throws ConfigurationException if the configuration parameter is not set
*/
boolean getConfigurationBoolean(String key)
throws ConfigurationException;
/**
* @return an object representing the fully qualified service path of this instance
* @throws ConfigurationException if the ServicePath cannot be acquired
*/
ServicePath getServicePath()
throws ConfigurationException;
}