/
MPrivStreamListHandler.java
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/
MPrivStreamListHandler.java
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/*
* Copyright © 2022 Mark Raynsford <code@io7m.com> https://www.io7m.com
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
* IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
package com.io7m.mesquida.internal.private_api;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.io7m.mesquida.internal.MJson;
import com.io7m.mesquida.internal.MServerConfiguration;
import com.io7m.mesquida.internal.database.MDatabase;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.apache.commons.io.output.CloseShieldOutputStream;
import org.eclipse.jetty.server.Request;
import org.jooq.SQLDialect;
import org.jooq.impl.DSL;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.net.URI;
import java.sql.SQLException;
import java.util.Objects;
import java.util.Set;
import static com.io7m.mesquida.internal.database.Tables.STREAM_ADDRESSES;
import static com.io7m.mesquida.internal.database.tables.Streams.STREAMS;
/**
* A server stream list handler.
*/
public final class MPrivStreamListHandler extends MPrivAuthenticatedHandler
{
private static final Logger LOG =
LoggerFactory.getLogger(MPrivStreamListHandler.class);
private final MDatabase database;
private final ObjectMapper mapper;
/**
* Construct a handler.
*
* @param inConfiguration The configuration
* @param inDatabase The database
*/
public MPrivStreamListHandler(
final MServerConfiguration inConfiguration,
final MDatabase inDatabase)
{
super(inConfiguration);
this.database =
Objects.requireNonNull(inDatabase, "inDatabase");
this.mapper =
MJson.createMapper(
Set.of(
String.class.getCanonicalName(),
URI.class.getCanonicalName(),
MStreamList.class.getCanonicalName(),
MStreamAddress.class.getCanonicalName()
)
);
}
@Override
protected void handleAuthenticated(
final String target,
final Request baseRequest,
final HttpServletRequest request,
final HttpServletResponse response)
throws IOException
{
final var output = new MStreamList();
try (var connection = this.database.openConnection()) {
final var context =
DSL.using(connection, SQLDialect.DERBY);
final var streams =
context.fetch(STREAMS);
for (final var stream : streams) {
final var outputStream = new MStream();
outputStream.id = stream.getStreamId();
outputStream.name = stream.getStreamName();
outputStream.title = stream.getStreamTitle();
final var addresses =
context.fetch(
STREAM_ADDRESSES,
STREAM_ADDRESSES.STREAM_REFERENCE.eq(stream.getStreamId())
);
for (final var address : addresses) {
final var outputAddress = new MStreamAddress();
outputAddress.id = address.getStreamAddressId().intValue();
outputAddress.protocol = address.getStreamProtocol();
outputAddress.url = URI.create(address.getStreamUrl());
outputStream.addresses.add(outputAddress);
}
output.streams.add(outputStream);
}
connection.rollback();
} catch (final SQLException e) {
LOG.error("database error: ", e);
MPrivAuthenticatedHandler.sendError(response, 500, e.getMessage());
}
response.setContentType("text/json");
response.setStatus(200);
try (var outputStream = response.getOutputStream()) {
try (var out = CloseShieldOutputStream.wrap(outputStream)) {
this.mapper.writeValue(out, output);
}
outputStream.println();
}
}
}