net.netheos.pcsapi.credentials.AppInfoFileRepository.java Source code

Introduction

Here is the source code for net.netheos.pcsapi.credentials.AppInfoFileRepository.java

Source

/**
 * Copyright (c) 2014 Netheos (http://www.netheos.net)
 *
 * 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 net.netheos.pcsapi.credentials;

import net.netheos.pcsapi.utils.PcsUtils;

import org.json.JSONArray;
import org.json.JSONObject;
import org.json.JSONTokener;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * This class is a simple reader of applications information from a plain text file with format:
 * <pre>
 * providerName1.appName1 = jsonobject1
 * providerName1.appName2 = jsonobject2
 * </pre>
 */
public class AppInfoFileRepository implements AppInfoRepository {

    private final File file;
    private final Map<String, AppInfo> appInfoMap = new HashMap<String, AppInfo>();

    public AppInfoFileRepository(File file) throws IOException {
        this.file = file;

        BufferedReader reader = null;
        try {
            reader = new BufferedReader(new InputStreamReader(new FileInputStream(file), PcsUtils.UTF8));

            String line;
            while ((line = reader.readLine()) != null) { // while loop begins here
                line = line.trim();

                if (line.startsWith("#") || line.length() == 0) {
                    continue;
                }

                String[] appInfoArray = line.split("=", 2);

                // Key
                String[] appInfoKeyArray = appInfoArray[0].trim().split("\\.");
                String providerName = appInfoKeyArray[0];
                String appName = appInfoKeyArray[1];

                String appInfoValue = appInfoArray[1].trim();
                JSONObject jsonObj = (JSONObject) new JSONTokener(appInfoValue).nextValue();
                String appId = jsonObj.optString("appId", null);

                AppInfo appInfo;
                if (appId != null) {
                    // OAuth
                    JSONArray jsonScope = jsonObj.optJSONArray("scope");
                    List<String> scopeList = new ArrayList<String>();

                    for (int i = 0; i < jsonScope.length(); i++) {
                        scopeList.add(jsonScope.get(i).toString());
                    }
                    String appSecret = jsonObj.getString("appSecret");
                    String redirectUrl = jsonObj.optString("redirectUrl", null);
                    appInfo = new OAuth2AppInfo(providerName, appName, appId, appSecret, scopeList, redirectUrl);

                } else {
                    // Login / Password
                    appInfo = new PasswordAppInfo(providerName, appName);
                }

                appInfoMap.put(getAppKey(providerName, appName), appInfo);
            }

        } finally {
            PcsUtils.closeQuietly(reader);
        }
    }

    private String getAppKey(String providerName, String appName) {
        return providerName + "." + appName;
    }

    /**
     * Retrieves application information for the specified provider.
     *
     * @param providerName
     * @return appInfo
     */
    @Override
    public AppInfo get(String providerName) {
        return get(providerName, null);
    }

    @Override
    public AppInfo get(String providerName, String appName) {
        AppInfo appInfo = null;

        if (appName != null) {
            final String key = getAppKey(providerName, appName);
            appInfo = appInfoMap.get(key);

            if (appInfo == null) {
                throw new IllegalStateException(String
                        .format("No application found for provider '%s' and name '%s'", providerName, appName));
            }

            return appInfo;

        } else {
            // loop over all appInfo

            for (String key : appInfoMap.keySet()) {
                if (key.startsWith(providerName + ".")) {

                    if (appInfo != null) {
                        throw new IllegalStateException("Several applications found for provider:" + providerName);
                    }

                    appInfo = appInfoMap.get(key);
                }
            }
        }

        if (appInfo == null) {
            throw new IllegalStateException("No application found for provider: " + providerName);
        }

        return appInfo;
    }

    @Override
    public String toString() {
        return "AppInfoFileRepo{" + "file='" + file + '\'' + ", appInfoMap=" + appInfoMap + '}';
    }

}