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High-Performance FIX Gateway
/*
* Copyright 2019 Monotonic Ltd.
*
* 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
*
* https://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 uk.co.real_logic.artio.dictionary.generation;
import java.io.IOException;
import java.io.Writer;
import java.util.Set;
import java.util.stream.Collectors;
import org.agrona.LangUtil;
import org.agrona.generation.OutputManager;
import uk.co.real_logic.artio.builder.*;
import uk.co.real_logic.artio.decoder.AbstractHeartbeatDecoder;
import uk.co.real_logic.artio.decoder.AbstractLogonDecoder;
import uk.co.real_logic.artio.decoder.AbstractLogoutDecoder;
import uk.co.real_logic.artio.decoder.AbstractRejectDecoder;
import uk.co.real_logic.artio.decoder.AbstractResendRequestDecoder;
import uk.co.real_logic.artio.decoder.AbstractSequenceResetDecoder;
import uk.co.real_logic.artio.decoder.AbstractTestRequestDecoder;
import uk.co.real_logic.artio.decoder.AbstractUserRequestDecoder;
import uk.co.real_logic.artio.decoder.SessionHeaderDecoder;
import uk.co.real_logic.artio.dictionary.FixDictionary;
import uk.co.real_logic.artio.dictionary.Generated;
import uk.co.real_logic.artio.dictionary.ir.Aggregate;
import uk.co.real_logic.artio.dictionary.ir.Dictionary;
import static uk.co.real_logic.artio.dictionary.generation.GenerationUtil.GENERATED_ANNOTATION;
import static uk.co.real_logic.artio.dictionary.generation.GenerationUtil.fileHeader;
import static uk.co.real_logic.artio.dictionary.generation.GenerationUtil.importFor;
class FixDictionaryGenerator
{
private static final String TEMPLATE =
"public class FixDictionaryImpl implements FixDictionary\n" +
"{\n" +
" public String beginString()\n" +
" {\n" +
" return \"%1$s\";\n" +
" }\n" +
"\n" +
" public SessionHeaderDecoder makeHeaderDecoder()\n" +
" {\n" +
" return new HeaderDecoder();\n" +
" }\n" +
"\n" +
" public SessionHeaderEncoder makeHeaderEncoder()\n" +
" {\n" +
" return new HeaderEncoder();\n" +
" }\n" +
"\n";
private static final String MAKE_TEMPLATE = "" +
" public Abstract%1$s make%1$s()\n" +
" {\n" +
" return %2$s;\n" +
" }\n" +
"\n";
private static final String NULL = "null";
private final Dictionary dictionary;
private final OutputManager outputManager;
private final String encoderPackage;
private final String decoderPackage;
private final String parentPackage;
FixDictionaryGenerator(
final Dictionary dictionary,
final OutputManager outputManager,
final String encoderPackage,
final String decoderPackage,
final String parentPackage)
{
this.dictionary = dictionary;
this.outputManager = outputManager;
this.encoderPackage = encoderPackage;
this.decoderPackage = decoderPackage;
this.parentPackage = parentPackage;
}
public void generate()
{
if (dictionary.shared())
{
return;
}
final Set allMessageNames = dictionary.messages()
.stream().map(Aggregate::name).collect(Collectors.toSet());
outputManager.withOutput("FixDictionaryImpl", (out) ->
{
try
{
final StringBuilder sb = new StringBuilder(String.format(TEMPLATE, dictionary.beginString()));
out.append(fileHeader(parentPackage));
out.append(importFor(FixDictionary.class));
out.append(importFor(AbstractLogonEncoder.class));
addEncoderImport(out, encoderPackage, "Logon", allMessageNames, sb);
out.append(importFor(AbstractResendRequestEncoder.class));
addEncoderImport(out, encoderPackage, "ResendRequest", allMessageNames, sb);
out.append(importFor(AbstractLogoutEncoder.class));
addEncoderImport(out, encoderPackage, "Logout", allMessageNames, sb);
out.append(importFor(AbstractHeartbeatEncoder.class));
addEncoderImport(out, encoderPackage, "Heartbeat", allMessageNames, sb);
out.append(importFor(AbstractRejectEncoder.class));
addEncoderImport(out, encoderPackage, "Reject", allMessageNames, sb);
out.append(importFor(AbstractTestRequestEncoder.class));
addEncoderImport(out, encoderPackage, "TestRequest", allMessageNames, sb);
out.append(importFor(AbstractSequenceResetEncoder.class));
addEncoderImport(out, encoderPackage, "SequenceReset", allMessageNames, sb);
out.append(importFor(AbstractBusinessMessageRejectEncoder.class));
addEncoderImport(out, encoderPackage, "BusinessMessageReject", allMessageNames, sb);
out.append(importFor(SessionHeaderEncoder.class));
out.append(importFor(encoderPackage + ".HeaderEncoder"));
out.append(importFor(AbstractLogonDecoder.class));
addDecoderImport(out, decoderPackage, "Logon", allMessageNames, sb);
out.append(importFor(AbstractLogoutDecoder.class));
addDecoderImport(out, decoderPackage, "Logout", allMessageNames, sb);
out.append(importFor(AbstractRejectDecoder.class));
addDecoderImport(out, decoderPackage, "Reject", allMessageNames, sb);
out.append(importFor(AbstractTestRequestDecoder.class));
addDecoderImport(out, decoderPackage, "TestRequest", allMessageNames, sb);
out.append(importFor(AbstractSequenceResetDecoder.class));
addDecoderImport(out, decoderPackage, "SequenceReset", allMessageNames, sb);
out.append(importFor(AbstractHeartbeatDecoder.class));
addDecoderImport(out, decoderPackage, "Heartbeat", allMessageNames, sb);
out.append(importFor(AbstractResendRequestDecoder.class));
addDecoderImport(out, decoderPackage, "ResendRequest", allMessageNames, sb);
out.append(importFor(AbstractUserRequestDecoder.class));
addDecoderImport(out, decoderPackage, "UserRequest", allMessageNames, sb);
out.append(importFor(SessionHeaderDecoder.class));
out.append(importFor(decoderPackage + ".HeaderDecoder"));
out.append(importFor(Generated.class));
out.append("\n" + GENERATED_ANNOTATION);
out.append(sb.toString());
}
catch (final IOException e)
{
LangUtil.rethrowUnchecked(e);
}
finally
{
out.append("}\n");
}
});
}
private static void addEncoderImport(
final Writer out,
final String encoderPackage,
final String messageName,
final Set allMessageNames,
final StringBuilder sb) throws IOException
{
addImport(out, encoderPackage, messageName, allMessageNames, sb, "Encoder");
}
private static void addDecoderImport(
final Writer out,
final String decoderPackage,
final String messageName,
final Set allMessageNames, final StringBuilder sb) throws IOException
{
addImport(out, decoderPackage, messageName, allMessageNames, sb, "Decoder");
}
private static void addImport(
final Writer out,
final String classPackage,
final String messageName,
final Set allMessageNames,
final StringBuilder sb,
final String encoderOrDecoder) throws IOException
{
final String encoderClass = messageName + encoderOrDecoder;
final String constructor;
if (allMessageNames.contains(messageName))
{
constructor = String.format("new %s()", encoderClass);
out.append(importFor(classPackage + "." + encoderClass));
}
else
{
constructor = NULL;
}
sb.append(String.format(MAKE_TEMPLATE, encoderClass, constructor));
}
}