com.linecorp.armeria.server.http.HttpServiceCodec.java Source code

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Here is the source code for com.linecorp.armeria.server.http.HttpServiceCodec.java

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/*
 * Copyright 2015 LINE Corporation
 *
 * LINE Corporation 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.linecorp.armeria.server.http;

import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.EnumSet;
import java.util.Set;

import com.linecorp.armeria.common.Scheme;
import com.linecorp.armeria.common.SerializationFormat;
import com.linecorp.armeria.common.ServiceInvocationContext;
import com.linecorp.armeria.common.SessionProtocol;
import com.linecorp.armeria.server.ServiceCodec;
import com.linecorp.armeria.server.ServiceConfig;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.Channel;
import io.netty.handler.codec.http.FullHttpRequest;
import io.netty.util.CharsetUtil;
import io.netty.util.concurrent.Promise;

final class HttpServiceCodec implements ServiceCodec {

    private static final Set<SessionProtocol> ALLOWED_PROTOCOLS = EnumSet.of(SessionProtocol.H1,
            SessionProtocol.H1C, SessionProtocol.H2, SessionProtocol.H2C, SessionProtocol.HTTP,
            SessionProtocol.HTTPS);

    @Override
    public DecodeResult decodeRequest(ServiceConfig cfg, Channel ch, SessionProtocol sessionProtocol,
            String hostname, String path, String mappedPath, ByteBuf in, Object originalRequest,
            Promise<Object> promise) throws Exception {

        if (!ALLOWED_PROTOCOLS.contains(sessionProtocol)) {
            throw new IllegalStateException("unsupported session protocol: " + sessionProtocol);
        }

        return new HttpServiceInvocationContext(ch, Scheme.of(SerializationFormat.NONE, sessionProtocol), hostname,
                path, mappedPath, cfg.loggerName(), (FullHttpRequest) originalRequest);
    }

    @Override
    public boolean failureResponseFailsSession(ServiceInvocationContext ctx) {
        return true;
    }

    @Override
    public ByteBuf encodeResponse(ServiceInvocationContext ctx, Object response) throws Exception {

        throw new IllegalStateException("unsupported message type: " + response.getClass().getName());
    }

    @Override
    public ByteBuf encodeFailureResponse(ServiceInvocationContext ctx, Throwable cause) throws Exception {

        final StringWriter sw = new StringWriter(512);
        final PrintWriter pw = new PrintWriter(sw);
        cause.printStackTrace(pw);
        pw.flush();
        return Unpooled.wrappedBuffer(sw.toString().getBytes(CharsetUtil.UTF_8));
    }
}