io.syndesis.integration.project.generator.ProjectGeneratorHelper Maven / Gradle / Ivy
/*
* Copyright (C) 2016 Red Hat, Inc.
*
* 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 io.syndesis.integration.project.generator;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.URL;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.ListIterator;
import java.util.Map;
import java.util.Map.Entry;
import com.github.mustachejava.Mustache;
import com.github.mustachejava.MustacheFactory;
import io.syndesis.integration.api.IntegrationResourceManager;
import io.syndesis.integration.project.generator.mvn.MavenGav;
import io.swagger.models.Path;
import io.swagger.models.Swagger;
import io.syndesis.common.model.connection.Connection;
import io.syndesis.common.model.connection.Connector;
import io.syndesis.common.model.integration.Flow;
import io.syndesis.common.model.integration.Integration;
import io.syndesis.common.model.integration.Scheduler;
import io.syndesis.common.model.integration.Step;
import org.apache.camel.util.ObjectHelper;
import org.apache.commons.compress.archivers.tar.TarArchiveEntry;
import org.apache.commons.compress.archivers.tar.TarArchiveOutputStream;
import org.apache.commons.io.IOUtils;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@SuppressWarnings("PMD.CyclomaticComplexity")
public final class ProjectGeneratorHelper {
private static final Logger LOGGER = LoggerFactory.getLogger(ProjectGeneratorHelper.class);
private ProjectGeneratorHelper() {
}
public static void addResource(TarArchiveOutputStream tos, String destination, String resource) throws IOException {
final URL url = ProjectGeneratorHelper.class.getResource(resource);
final byte[] bytes = IOUtils.toByteArray(url);
addTarEntry(tos, destination, bytes);
}
public static void addTarEntry(TarArchiveOutputStream tos, String path, byte[] content) throws IOException {
TarArchiveEntry entry = new TarArchiveEntry(path);
entry.setSize(content.length);
tos.putArchiveEntry(entry);
tos.write(content);
tos.closeArchiveEntry();
}
public static byte[] generate(Object scope, Mustache template) throws IOException {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
template.execute(new OutputStreamWriter(bos, StandardCharsets.UTF_8), scope).flush();
return bos.toByteArray();
}
public static boolean filterDefaultDependencies(MavenGav gav) {
boolean answer = true;
if ("org.springframework.boot".equals(gav.getGroupId())) {
if ("spring-boot-starter-web".equals(gav.getArtifactId())) {
answer = false;
} if ("spring-boot-starter-undertow".equals(gav.getArtifactId())) {
answer = false;
} else if ("spring-boot-starter-actuator".equals(gav.getArtifactId())) {
answer = false;
}
}
if ("org.apache.camel".equals(gav.getGroupId()) && "camel-spring-boot-starter".equals(gav.getArtifactId())) {
answer = false;
}
if ("io.syndesis".equals(gav.getGroupId()) && "integration-runtime".equals(gav.getArtifactId())) {
answer = false;
}
if (!answer) {
LOGGER.debug("Dependency: {} filtered", gav);
}
return answer;
}
public static Mustache compile(MustacheFactory mustacheFactory, ProjectGeneratorConfiguration generatorProperties, String template, String name) throws IOException {
String overridePath = generatorProperties.getTemplates().getOverridePath();
URL resource = null;
if (!StringUtils.isEmpty(overridePath)) {
resource = ProjectGeneratorHelper.class.getResource("templates/" + overridePath + "/" + template);
}
if (resource == null) {
resource = ProjectGeneratorHelper.class.getResource("templates/" + template);
}
if (resource == null) {
throw new IllegalArgumentException(
String.format("Unable to find te required template (overridePath=%s, template=%s)"
, overridePath
, template
)
);
}
try (InputStream stream = resource.openStream()) {
return mustacheFactory.compile(new InputStreamReader(stream, StandardCharsets.UTF_8), name);
}
}
public static String mandatoryDecrypt(IntegrationResourceManager manager, String propertyKey, String propertyVal) {
String answer = propertyKey;
if (propertyVal != null) {
answer = manager.decrypt(propertyVal);
if (answer == null) {
throw new IllegalArgumentException("Unable to decrypt key:" + propertyKey);
}
}
return answer;
}
public static Integration sanitize(Integration integration, IntegrationResourceManager resourceManager) {
if (integration.getFlows().isEmpty()) {
return integration;
}
final List replacementFlows = new ArrayList<>(integration.getFlows());
final ListIterator flows = replacementFlows.listIterator();
while (flows.hasNext()) {
final Flow flow = flows.next();
if (flow.getSteps().isEmpty()) {
continue;
}
final List replacementSteps = new ArrayList<>(flow.getSteps());
final ListIterator steps = replacementSteps.listIterator();
while (steps.hasNext()) {
final Step source = steps.next();
if (source.getConnection().isPresent()) {
final Connection connection = source.getConnection().get();
// If connector is not set, fetch it from data source and update connection
if (!connection.getConnector().isPresent()) {
Connector connector = resourceManager.loadConnector(connection.getConnectorId()).orElseThrow(
() -> new IllegalArgumentException("Unable to fetch connector: " + connection.getConnectorId())
);
// Add missing connector to connection.
Connection newConnection = new Connection.Builder()
.createFrom(connection)
.connector(connector)
.build();
// Replace with the new 'sanitized' step
steps.set(
new Step.Builder()
.createFrom(source)
.connection(newConnection)
.build()
);
}
}
}
final Flow.Builder replacementFlowBuider = flow.builder().createFrom(flow).steps(replacementSteps);
flows.set(replacementFlowBuider.build());
// Temporary implementation until https://github.com/syndesisio/syndesis/issues/736
// is fully implemented and schedule options are set on integration.
if (!flow.getScheduler().isPresent()) {
final Step firstStep = replacementSteps.get(0);
final Map properties = new HashMap<>(firstStep.getConfiguredProperties());
String type = properties.remove("schedulerType");
final String expr = properties.remove("schedulerExpression");
if (StringUtils.isNotEmpty(expr)) {
if (StringUtils.isEmpty(type)) {
type = "timer";
}
final Scheduler scheduler = new Scheduler.Builder().type(Scheduler.Type.valueOf(type)).expression(expr).build();
final Flow replacementFlow = replacementFlowBuider.scheduler(scheduler).build();
flows.set(replacementFlow);
}
// Replace first step so underlying connector won't fail uri param
// validation if schedule options were set.
steps.set(
new Step.Builder()
.createFrom(firstStep)
.configuredProperties(properties)
.build()
);
}
}
return new Integration.Builder().createFrom(integration)
.flows(replacementFlows)
.build();
}
/**
* The Swager to REST DSL generator in Camel doesn't properly handle
* basePaths, so here we set the basePath to null and prefix all
* paths with the basePath. See CAMEL-12893.
*/
public static Swagger normalizePaths(final Swagger swagger) {
final String basePath = swagger.getBasePath();
if (ObjectHelper.isEmpty(basePath)) {
return swagger;
}
swagger.basePath(null);
final Map normalized = new LinkedHashMap<>();
for (Entry given : swagger.getPaths().entrySet()) {
normalized.put(basePath + given.getKey(), given.getValue());
}
swagger.paths(normalized);
return swagger;
}
}
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