org.springframework.cloud.vault.VaultErrorMessage.java Source code

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Here is the source code for org.springframework.cloud.vault.VaultErrorMessage.java

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/*
 * Copyright 2016 the original author or authors.
 *
 * 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 org.springframework.cloud.vault;

import java.io.IOException;
import java.util.Collection;
import java.util.Map;

import com.fasterxml.jackson.databind.ObjectMapper;

/**
 * Utility to obtain a Vault error message.
 * 
 * @author Mark Paluch
 */
class VaultErrorMessage {

    private final static ObjectMapper OBJECT_MAPPER = new ObjectMapper();

    /**
     * Obtain the error message from a JSON response.
     * 
     * @param json
     * @return
     */
    static String getError(String json) {

        if (json.contains("\"errors\":")) {

            try {
                Map<String, Object> map = OBJECT_MAPPER.readValue(json.getBytes(), Map.class);
                if (map.containsKey("errors")) {

                    Collection<String> errors = (Collection<String>) map.get("errors");
                    if (errors.size() == 1) {
                        return errors.iterator().next();
                    }
                    return errors.toString();
                }

            } catch (IOException o_O) {
                // ignore
            }
        }
        return json;
    }
}