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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.hw.langchain.utils;
import org.apache.commons.lang3.StringUtils;
import java.util.Map;
/**
* @author HamaWhite
*/
public class Utils {
/**
* Retrieves the value from the dictionary or environment variable.
*
* @param data The dictionary data.
* @param key The key to lookup in the dictionary.
* @param envKey The key to lookup in the environment variables.
* @param defaultValue The default value(s) to return if the key is not found or the value is null or empty.
* @return The retrieved value. If the key is found and the value is not null or empty, it is returned.
* Otherwise, the value from the environment variable is returned if it is not null or empty.
* If the default value(s) are provided, the first default value is returned.
* If none of the above conditions are met, null is returned.
*/
public static String getFromDictOrEnv(Map data, String key, String envKey, String... defaultValue) {
if (data.containsKey(key) && data.get(key) != null) {
return data.get(key).toString();
} else {
return getFromEnv(key, envKey, defaultValue);
}
}
/**
* Retrieves the value from the environment variable or the default value.
*
* @param key The key to lookup in the environment variables.
* @param envKey The key to lookup in the environment variables.
* @param defaultValue The default value(s) to return if the environment variable is not found or its value is null or empty.
* @return The retrieved value. If the environment variable is not null or empty, it is returned.
* If the default value(s) are provided, the first default value is returned.
* If none of the above conditions are met, an {@code IllegalArgumentException} is thrown.
* @throws IllegalArgumentException if the environment variable is not found and no default value is provided.
*/
public static String getFromEnv(String key, String envKey, String... defaultValue) {
String envValue = System.getenv(envKey);
if (StringUtils.isNotEmpty(envValue)) {
return envValue;
} else if (defaultValue.length > 0) {
return defaultValue[0];
} else {
throw new IllegalArgumentException(
String.format(
"Did not find %s, please add an environment variable `%s` which contains it, or pass `%s` as a named parameter.",
key, envKey, key));
}
}
/**
* Retrieves the value from the original value, environment variable, or default value.
*
* @param originalValue The original value to check.
* @param envKey The key to lookup in the environment variables.
* @param defaultValue The default value(s) to return if the original value and environment variable are empty or null.
* @return The retrieved value. If the original value is not empty, it is returned.
* If the environment variable is not empty, it is returned.
* If the default value(s) are provided, the first default value is returned.
* If none of the above conditions are met, null is returned.
*/
public static String getOrEnvOrDefault(String originalValue, String envKey, String... defaultValue) {
if (StringUtils.isNotEmpty(originalValue)) {
return originalValue;
}
return getFromEnv(envKey, envKey, defaultValue);
}
}
