com.googlesource.gerrit.plugins.hooks.rtc.network.RTCHttpParams.java Source code

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Here is the source code for com.googlesource.gerrit.plugins.hooks.rtc.network.RTCHttpParams.java

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// Copyright (C) 2013 The Android Open Source Project
//
// 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.googlesource.gerrit.plugins.hooks.rtc.network;

import java.util.HashMap;

import org.apache.http.client.params.ClientPNames;
import org.apache.http.conn.params.ConnManagerPNames;
import org.apache.http.params.CoreConnectionPNames;
import org.apache.http.params.CoreProtocolPNames;
import org.apache.http.params.HttpParams;
import org.eclipse.jgit.lib.Config;

import com.google.common.base.Objects;
import com.google.gerrit.server.config.GerritServerConfig;
import com.google.inject.Inject;
import com.googlesource.gerrit.plugins.hooks.rtc.RTCItsFacade;

@SuppressWarnings("deprecation")
public class RTCHttpParams implements HttpParams {
    private static interface ParameterParser {
        public Object parse(String value);
    }

    private static final ParameterParser TYPE_STRING = new ParameterParser() {
        @Override
        public Object parse(String value) {
            return value;
        }
    };

    private static final ParameterParser TYPE_LONG = new ParameterParser() {
        @Override
        public Object parse(String value) {
            if (value == null) {
                return null;
            } else {
                return Long.parseLong(value);
            }
        }
    };

    private static final ParameterParser TYPE_INT = new ParameterParser() {
        @Override
        public Object parse(String value) {
            if (value == null) {
                return null;
            } else {
                return Integer.parseInt(value);
            }
        }
    };

    private static final ParameterParser TYPE_BOOL = new ParameterParser() {
        @Override
        public Object parse(String value) {
            if (value == null) {
                return null;
            } else {
                return Boolean.parseBoolean(value);
            }
        }
    };

    private static final HashMap<String, ParameterParser> TYPES = new HashMap<String, RTCHttpParams.ParameterParser>();
    static {

        TYPES.put(CoreConnectionPNames.SO_TIMEOUT, TYPE_INT);
        TYPES.put(CoreConnectionPNames.TCP_NODELAY, TYPE_BOOL);
        TYPES.put(CoreConnectionPNames.SOCKET_BUFFER_SIZE, TYPE_INT);
        TYPES.put(CoreConnectionPNames.SO_LINGER, TYPE_INT);
        TYPES.put(CoreConnectionPNames.SO_REUSEADDR, TYPE_BOOL);
        TYPES.put(CoreConnectionPNames.CONNECTION_TIMEOUT, TYPE_INT);
        TYPES.put(CoreConnectionPNames.STALE_CONNECTION_CHECK, TYPE_BOOL);
        TYPES.put(CoreConnectionPNames.MAX_LINE_LENGTH, TYPE_INT);
        TYPES.put(CoreConnectionPNames.MAX_HEADER_COUNT, TYPE_INT);
        TYPES.put(CoreConnectionPNames.MIN_CHUNK_LIMIT, TYPE_INT);
        TYPES.put(CoreConnectionPNames.SO_KEEPALIVE, TYPE_BOOL);

        TYPES.put(ClientPNames.HANDLE_REDIRECTS, TYPE_BOOL);
        TYPES.put(ClientPNames.REJECT_RELATIVE_REDIRECT, TYPE_BOOL);
        TYPES.put(ClientPNames.MAX_REDIRECTS, TYPE_INT);
        TYPES.put(ClientPNames.ALLOW_CIRCULAR_REDIRECTS, TYPE_BOOL);
        TYPES.put(ClientPNames.HANDLE_AUTHENTICATION, TYPE_BOOL);
        TYPES.put(ClientPNames.CONN_MANAGER_TIMEOUT, TYPE_LONG);

        TYPES.put(CoreProtocolPNames.STRICT_TRANSFER_ENCODING, TYPE_BOOL);
        TYPES.put(CoreProtocolPNames.USE_EXPECT_CONTINUE, TYPE_BOOL);
        TYPES.put(CoreProtocolPNames.WAIT_FOR_CONTINUE, TYPE_INT);

        TYPES.put(ConnManagerPNames.TIMEOUT, TYPE_LONG);
        TYPES.put(ConnManagerPNames.MAX_TOTAL_CONNECTIONS, TYPE_INT);
    }
    private Config config;

    @Inject
    public RTCHttpParams(@GerritServerConfig Config config) {
        this.config = config;
    }

    private String getParamName(String name) {
        StringBuilder camelisedName = new StringBuilder();
        for (String namePart : name.split("[\\.-]")) {
            if (camelisedName.length() > 0) {
                camelisedName.append(Character.toUpperCase(namePart.charAt(0)));
                camelisedName.append(namePart.substring(1, namePart.length()));
            } else {
                camelisedName.append(namePart);
            }
        }
        return camelisedName.toString();
    }

    @Override
    public Object getParameter(String name) {
        String value = config.getString(RTCItsFacade.ITS_NAME_RTC, null, getParamName(name));
        return getParameterParser(name).parse(value);
    }

    private ParameterParser getParameterParser(String name) {
        return Objects.firstNonNull(TYPES.get(name), TYPE_STRING);
    }

    @Override
    public HttpParams setParameter(String name, Object value) {
        return throwsNotSupported(HttpParams.class);
    }

    private <T> T throwsNotSupported(Class<T> clazz) {
        throw new IllegalArgumentException("Method not supported");
    }

    @Override
    @Deprecated
    public HttpParams copy() {
        return throwsNotSupported(HttpParams.class);
    }

    @Override
    public boolean removeParameter(String name) {
        return throwsNotSupported(Boolean.class);
    }

    @Override
    public long getLongParameter(String name, long defaultValue) {
        return config.getLong(RTCItsFacade.ITS_NAME_RTC, null, getParamName(name), defaultValue);
    }

    @Override
    public HttpParams setLongParameter(String name, long value) {
        return throwsNotSupported(HttpParams.class);
    }

    @Override
    public int getIntParameter(String name, int defaultValue) {
        return config.getInt(RTCItsFacade.ITS_NAME_RTC, null, getParamName(name), defaultValue);
    }

    @Override
    public HttpParams setIntParameter(String name, int value) {
        return throwsNotSupported(HttpParams.class);
    }

    @Override
    public double getDoubleParameter(String name, double defaultValue) {
        return throwsNotSupported(Double.class);
    }

    @Override
    public HttpParams setDoubleParameter(String name, double value) {
        return throwsNotSupported(HttpParams.class);
    }

    @Override
    public boolean getBooleanParameter(String name, boolean defaultValue) {
        return config.getBoolean(RTCItsFacade.ITS_NAME_RTC, null, getParamName(name), defaultValue);
    }

    @Override
    public HttpParams setBooleanParameter(String name, boolean value) {
        return throwsNotSupported(HttpParams.class);
    }

    @Override
    public boolean isParameterTrue(String name) {
        return getBooleanParameter(name, false);
    }

    @Override
    public boolean isParameterFalse(String name) {
        return !isParameterTrue(name);
    }
}