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ENTAXY-248 release 1.8.1

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Сергей Крючков
2022-02-28 15:20:38 +03:00
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commit c826adf1db
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Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all
other entities that control, are controlled by, or are under common
control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
transformation or translation of a Source form, including but
not limited to compiled object code, generated documentation,
and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
copyright notice that is included in or attached to the work
(an example is provided in the Appendix below).
"Derivative Works" shall mean any work, whether in Source or Object
form, that is based on (or derived from) the Work and for which the
editorial revisions, annotations, elaborations, or other modifications
represent, as a whole, an original work of authorship. For the purposes
of this License, Derivative Works shall not include works that remain
separable from, or merely link (or bind by name) to the interfaces of,
the Work and Derivative Works thereof.
"Contribution" shall mean any work of authorship, including
the original version of the Work and any modifications or additions
to that Work or Derivative Works thereof, that is intentionally
submitted to Licensor for inclusion in the Work by the copyright owner
or by an individual or Legal Entity authorized to submit on behalf of
the copyright owner. For the purposes of this definition, "submitted"
means any form of electronic, verbal, or written communication sent
to the Licensor or its representatives, including but not limited to
communication on electronic mailing lists, source code control systems,
and issue tracking systems that are managed by, or on behalf of, the
Licensor for the purpose of discussing and improving the Work, but
excluding communication that is conspicuously marked or otherwise
designated in writing by the copyright owner as "Not a Contribution."
"Contributor" shall mean Licensor and any individual or Legal Entity
on behalf of whom a Contribution has been received by Licensor and
subsequently incorporated within the Work.
2. Grant of Copyright License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
copyright license to reproduce, prepare Derivative Works of,
publicly display, publicly perform, sublicense, and distribute the
Work and such Derivative Works in Source or Object form.
3. Grant of Patent License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
(except as stated in this section) patent license to make, have made,
use, offer to sell, sell, import, and otherwise transfer the Work,
where such license applies only to those patent claims licensable
by such Contributor that are necessarily infringed by their
Contribution(s) alone or by combination of their Contribution(s)
with the Work to which such Contribution(s) was submitted. If You
institute patent litigation against any entity (including a
cross-claim or counterclaim in a lawsuit) alleging that the Work
or a Contribution incorporated within the Work constitutes direct
or contributory patent infringement, then any patent licenses
granted to You under this License for that Work shall terminate
as of the date such litigation is filed.
4. Redistribution. You may reproduce and distribute copies of the
Work or Derivative Works thereof in any medium, with or without
modifications, and in Source or Object form, provided that You
meet the following conditions:
(a) You must give any other recipients of the Work or
Derivative Works a copy of this License; and
(b) You must cause any modified files to carry prominent notices
stating that You changed the files; and
(c) You must retain, in the Source form of any Derivative Works
that You distribute, all copyright, patent, trademark, and
attribution notices from the Source form of the Work,
excluding those notices that do not pertain to any part of
the Derivative Works; and
(d) If the Work includes a "NOTICE" text file as part of its
distribution, then any Derivative Works that You distribute must
include a readable copy of the attribution notices contained
within such NOTICE file, excluding those notices that do not
pertain to any part of the Derivative Works, in at least one
of the following places: within a NOTICE text file distributed
as part of the Derivative Works; within the Source form or
documentation, if provided along with the Derivative Works; or,
within a display generated by the Derivative Works, if and
wherever such third-party notices normally appear. The contents
of the NOTICE file are for informational purposes only and
do not modify the License. You may add Your own attribution
notices within Derivative Works that You distribute, alongside
or as an addendum to the NOTICE text from the Work, provided
that such additional attribution notices cannot be construed
as modifying the License.
You may add Your own copyright statement to Your modifications and
may provide additional or different license terms and conditions
for use, reproduction, or distribution of Your modifications, or
for any such Derivative Works as a whole, provided Your use,
reproduction, and distribution of the Work otherwise complies with
the conditions stated in this License.
5. Submission of Contributions. Unless You explicitly state otherwise,
any Contribution intentionally submitted for inclusion in the Work
by You to the Licensor shall be under the terms and conditions of
this License, without any additional terms or conditions.
Notwithstanding the above, nothing herein shall supersede or modify
the terms of any separate license agreement you may have executed
with Licensor regarding such Contributions.
6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor,
except as required for reasonable and customary use in describing the
origin of the Work and reproducing the content of the NOTICE file.
7. Disclaimer of Warranty. Unless required by applicable law or
agreed to in writing, Licensor provides the Work (and each
Contributor provides its Contributions) on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied, including, without limitation, any warranties or conditions
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
PARTICULAR PURPOSE. You are solely responsible for determining the
appropriateness of using or redistributing the Work and assume any
risks associated with Your exercise of permissions under this License.
8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
incidental, or consequential damages of any character arising as a
result of this License or out of the use or inability to use the
Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses), even if such Contributor
has been advised of the possibility of such damages.
9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
and charge a fee for, acceptance of support, warranty, indemnity,
or other liability obligations and/or rights consistent with this
License. However, in accepting such obligations, You may act only
on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
APPENDIX: How to apply the Apache License to your work.
To apply the Apache License to your work, attach the following
boilerplate notice, with the fields enclosed by brackets "[]"
replaced with your own identifying information. (Don't include
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comment syntax for the file format. We also recommend that a
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Copyright [yyyy] [name of copyright owner]
Licensed under the Apache License, Version 2.0 (the "License");
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Unless required by applicable law or agreed to in writing, software
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Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all
other entities that control, are controlled by, or are under common
control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
transformation or translation of a Source form, including but
not limited to compiled object code, generated documentation,
and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
copyright notice that is included in or attached to the work
(an example is provided in the Appendix below).
"Derivative Works" shall mean any work, whether in Source or Object
form, that is based on (or derived from) the Work and for which the
editorial revisions, annotations, elaborations, or other modifications
represent, as a whole, an original work of authorship. For the purposes
of this License, Derivative Works shall not include works that remain
separable from, or merely link (or bind by name) to the interfaces of,
the Work and Derivative Works thereof.
"Contribution" shall mean any work of authorship, including
the original version of the Work and any modifications or additions
to that Work or Derivative Works thereof, that is intentionally
submitted to Licensor for inclusion in the Work by the copyright owner
or by an individual or Legal Entity authorized to submit on behalf of
the copyright owner. For the purposes of this definition, "submitted"
means any form of electronic, verbal, or written communication sent
to the Licensor or its representatives, including but not limited to
communication on electronic mailing lists, source code control systems,
and issue tracking systems that are managed by, or on behalf of, the
Licensor for the purpose of discussing and improving the Work, but
excluding communication that is conspicuously marked or otherwise
designated in writing by the copyright owner as "Not a Contribution."
"Contributor" shall mean Licensor and any individual or Legal Entity
on behalf of whom a Contribution has been received by Licensor and
subsequently incorporated within the Work.
2. Grant of Copyright License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
copyright license to reproduce, prepare Derivative Works of,
publicly display, publicly perform, sublicense, and distribute the
Work and such Derivative Works in Source or Object form.
3. Grant of Patent License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
(except as stated in this section) patent license to make, have made,
use, offer to sell, sell, import, and otherwise transfer the Work,
where such license applies only to those patent claims licensable
by such Contributor that are necessarily infringed by their
Contribution(s) alone or by combination of their Contribution(s)
with the Work to which such Contribution(s) was submitted. If You
institute patent litigation against any entity (including a
cross-claim or counterclaim in a lawsuit) alleging that the Work
or a Contribution incorporated within the Work constitutes direct
or contributory patent infringement, then any patent licenses
granted to You under this License for that Work shall terminate
as of the date such litigation is filed.
4. Redistribution. You may reproduce and distribute copies of the
Work or Derivative Works thereof in any medium, with or without
modifications, and in Source or Object form, provided that You
meet the following conditions:
(a) You must give any other recipients of the Work or
Derivative Works a copy of this License; and
(b) You must cause any modified files to carry prominent notices
stating that You changed the files; and
(c) You must retain, in the Source form of any Derivative Works
that You distribute, all copyright, patent, trademark, and
attribution notices from the Source form of the Work,
excluding those notices that do not pertain to any part of
the Derivative Works; and
(d) If the Work includes a "NOTICE" text file as part of its
distribution, then any Derivative Works that You distribute must
include a readable copy of the attribution notices contained
within such NOTICE file, excluding those notices that do not
pertain to any part of the Derivative Works, in at least one
of the following places: within a NOTICE text file distributed
as part of the Derivative Works; within the Source form or
documentation, if provided along with the Derivative Works; or,
within a display generated by the Derivative Works, if and
wherever such third-party notices normally appear. The contents
of the NOTICE file are for informational purposes only and
do not modify the License. You may add Your own attribution
notices within Derivative Works that You distribute, alongside
or as an addendum to the NOTICE text from the Work, provided
that such additional attribution notices cannot be construed
as modifying the License.
You may add Your own copyright statement to Your modifications and
may provide additional or different license terms and conditions
for use, reproduction, or distribution of Your modifications, or
for any such Derivative Works as a whole, provided Your use,
reproduction, and distribution of the Work otherwise complies with
the conditions stated in this License.
5. Submission of Contributions. Unless You explicitly state otherwise,
any Contribution intentionally submitted for inclusion in the Work
by You to the Licensor shall be under the terms and conditions of
this License, without any additional terms or conditions.
Notwithstanding the above, nothing herein shall supersede or modify
the terms of any separate license agreement you may have executed
with Licensor regarding such Contributions.
6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor,
except as required for reasonable and customary use in describing the
origin of the Work and reproducing the content of the NOTICE file.
7. Disclaimer of Warranty. Unless required by applicable law or
agreed to in writing, Licensor provides the Work (and each
Contributor provides its Contributions) on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied, including, without limitation, any warranties or conditions
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
PARTICULAR PURPOSE. You are solely responsible for determining the
appropriateness of using or redistributing the Work and assume any
risks associated with Your exercise of permissions under this License.
8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
incidental, or consequential damages of any character arising as a
result of this License or out of the use or inability to use the
Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses), even if such Contributor
has been advised of the possibility of such damages.
9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
and charge a fee for, acceptance of support, warranty, indemnity,
or other liability obligations and/or rights consistent with this
License. However, in accepting such obligations, You may act only
on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
APPENDIX: How to apply the Apache License to your work.
To apply the Apache License to your work, attach the following
boilerplate notice, with the fields enclosed by brackets "[]"
replaced with your own identifying information. (Don't include
the brackets!) The text should be enclosed in the appropriate
comment syntax for the file format. We also recommend that a
file or class name and description of purpose be included on the
same "printed page" as the copyright notice for easier
identification within third-party archives.
Copyright [yyyy] [name of copyright owner]
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.

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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>ru.entaxy.esb.platform.runtime.core</groupId>
<artifactId>cluster</artifactId>
<version>1.8.1</version>
</parent>
<groupId>ru.entaxy.esb.platform.runtime.core.cluster</groupId>
<artifactId>cluster-persistence-service</artifactId>
<packaging>bundle</packaging>
<name>ENTAXY :: PLATFORM :: CORE :: CLUSTER :: PERSISTENCE</name>
<description>ENTAXY :: PLATFORM :: CORE :: CLUSTER :: PERSISTENCE</description>
<properties>
<bundle.osgi.private.pkg>
ru.entaxy.esb.platform.core.cluster.persistence.activator,
ru.entaxy.esb.platform.core.cluster.persistence.handler
</bundle.osgi.private.pkg>
<bundle.osgi.import.pkg>
!org.apache.karaf.cellar.bundle.shell*,
org.osgi.framework,
*
</bundle.osgi.import.pkg>
<bundle.osgi.export.pkg>
ru.entaxy.esb.platform.core.cluster.persistence
</bundle.osgi.export.pkg>
<bundle.osgi.dynamicimport.pkg>
*
</bundle.osgi.dynamicimport.pkg>
</properties>
<dependencies>
<dependency>
<groupId>org.apache.karaf.features</groupId>
<artifactId>org.apache.karaf.features.core</artifactId>
<version>${karaf.version}</version>
</dependency>
<dependency>
<groupId>org.osgi</groupId>
<artifactId>osgi.core</artifactId>
<version>${osgi.version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
</dependency>
<dependency>
<groupId>org.apache.karaf</groupId>
<artifactId>org.apache.karaf.util</artifactId>
<version>${karaf.version}</version>
</dependency>
<dependency>
<groupId>org.osgi</groupId>
<artifactId>org.osgi.compendium</artifactId>
<version>${osgi.compendium.version}</version>
</dependency>
<dependency>
<groupId>com.hazelcast</groupId>
<artifactId>hazelcast-all</artifactId>
<version>${hazelcast.version}</version>
</dependency>
<dependency>
<groupId>org.apache.karaf.cellar</groupId>
<artifactId>org.apache.karaf.cellar.core</artifactId>
<version>${cellar.version}</version>
<exclusions>
<exclusion>
<groupId>org.apache.karaf</groupId>
<artifactId>org.apache.karaf.util</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.apache.karaf.cellar</groupId>
<artifactId>org.apache.karaf.cellar.bundle</artifactId>
<version>${cellar.version}-ENTAXY</version>
<exclusions>
<exclusion>
<groupId>org.apache.karaf</groupId>
<artifactId>org.apache.karaf.util</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.apache.karaf.cellar</groupId>
<artifactId>org.apache.karaf.cellar.hazelcast</artifactId>
<version>${cellar.version}</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.karaf.tooling</groupId>
<artifactId>karaf-services-maven-plugin</artifactId>
<version>${karaf.version}</version>
<executions>
<execution>
<id>service-metadata-generate</id>
<phase>process-classes</phase>
<goals>
<goal>service-metadata-generate</goal>
</goals>
<configuration>
<artifactInclude>.*</artifactInclude>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>

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platform/runtime/core/cluster/cluster-persistence-service/src/main/java/ru/entaxy/esb/platform/core/cluster/persistence/Helper.java Normal file
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/*-
* ~~~~~~licensing~~~~~~
* cluster-persistence-service
* ==========
* Copyright (C) 2020 - 2021 EmDev LLC
* ==========
* 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.
* ~~~~~~/licensing~~~~~~
*/
package ru.entaxy.esb.platform.core.cluster.persistence;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Map;
import java.util.stream.Collectors;
import org.apache.karaf.cellar.bundle.BundleState;
import org.apache.karaf.cellar.core.ClusterManager;
import org.apache.karaf.cellar.core.Configurations;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class Helper<T> {
private static final Logger log = LoggerFactory.getLogger(Helper.class);
public static final String DELIMITER = "~~_DEL_~~";
public static final String SEPARATOR = "~~_SEP_~~";
protected String mapBaseName;
protected String classifier;
protected Class<T> dataClass;
protected Serializer<T> serializer;
protected String rootPath;
protected String subPath;
protected ServiceProvider serviceProvider;
public Helper(ServiceProvider serviceProvider, String mapBaseName, String classifier, Class<T> dataClass) {
this.serviceProvider = serviceProvider;
this.mapBaseName = mapBaseName;
this.classifier = classifier;
this.dataClass = dataClass;
this.serializer = new Serializer<>(this.dataClass);
this.rootPath = System.getProperty("karaf.home");
this.subPath = "cluster-state";
}
protected Path getTargetPath(String groupName) {
String fileName = "cluster." + classifier + "." + groupName + ".state";
Path p = Paths.get(this.rootPath, this.subPath, fileName);
return p;
}
public void saveClusterState(String groupName) {
ClassLoader originalClassLoader = Thread.currentThread().getContextClassLoader();
Thread.currentThread().setContextClassLoader(this.dataClass.getClassLoader());
if (!checkGroup(groupName))
return;
ClusterManager clusterManager = this.serviceProvider.getClusterManager();
@SuppressWarnings("unchecked")
Map<String, T> clusterData = clusterManager.getMap(this.mapBaseName + Configurations.SEPARATOR + groupName);
String serialized = "";
serialized = clusterData.entrySet().stream()
.<String>map((entry)->{return entry.getKey() + DELIMITER + serializer.toString(entry.getValue());})
.collect(Collectors.joining(SEPARATOR));
Path p = getTargetPath(groupName);
try {
// if (!p.toFile().exists())
// p.toFile().createNewFile();
Files.createDirectories(p.getParent());
Files.write(p, serialized.getBytes());
} catch (IOException e) {
log.error("FAILED saving state to [" + p.toUri().toString() + "]", e);
}
Thread.currentThread().setContextClassLoader(originalClassLoader);
}
public void loadClusterState(String groupName) {
ClassLoader originalClassLoader = Thread.currentThread().getContextClassLoader();
Thread.currentThread().setContextClassLoader(this.dataClass.getClassLoader());
if (!checkGroup(groupName))
return;
Path p = getTargetPath(groupName);
if (!p.toFile().exists()) {
log.info("File [{}] doesn't exist, skip loading [{}] from [{}]"
, p.toUri().toString()
, this.classifier
, this.mapBaseName);
return;
}
String data = "";
try {
data = Files.readString(p);
} catch (IOException e) {
log.error("Error reading data from [" + p.toUri().toString() + "]", e);
}
if ((data == null) || data.length()==0 )
return;
ClusterManager clusterManager = this.serviceProvider.getClusterManager();
@SuppressWarnings("unchecked")
Map<String, T> clusterData = clusterManager.getMap(this.mapBaseName + Configurations.SEPARATOR + groupName);
String[] entries = data.split(SEPARATOR);
for (int i=0; i<entries.length; i++) {
String[] entry = entries[i].split(DELIMITER);
T object = serializer.fromString(entry[1]);
clusterData.put(entry[0], object);
}
Thread.currentThread().setContextClassLoader(originalClassLoader);
}
protected boolean checkGroup(String groupName) {
// TODO implement check
return true;
}
}

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platform/runtime/core/cluster/cluster-persistence-service/src/main/java/ru/entaxy/esb/platform/core/cluster/persistence/PersistenceManager.java Normal file
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/*-
* ~~~~~~licensing~~~~~~
* cluster-persistence-service
* ==========
* Copyright (C) 2020 - 2021 EmDev LLC
* ==========
* 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.
* ~~~~~~/licensing~~~~~~
*/
package ru.entaxy.esb.platform.core.cluster.persistence;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class PersistenceManager<T> {
private static final Logger log = LoggerFactory.getLogger(PersistenceManager.class);
private static class UpdateMarker {
private boolean updated = false;
public void update() {
this.updated = true;
}
public void clear() {
this.updated = false;
}
public boolean isUpdated() {
return updated;
}
}
private static interface UpdateTaskCallback {
public void executed();
}
private class Executor implements UpdateTaskCallback {
private Boolean isRunning = false;
private ExecutorService threadPool = Executors.newSingleThreadExecutor();
public synchronized void run() {
synchronized (isRunning) {
if (this.isRunning)
return;
this.isRunning = true;
log.info("~~> EXECUTOR :: RUN");
UpdateTask ut = new UpdateTask(PersistenceManager.this.helper, this);
PersistenceManager.this.clear();
threadPool.execute(ut);
}
}
@Override
public synchronized void executed() {
log.info("~~> EXECUTOR :: EXECUTED");
synchronized (isRunning) {
this.isRunning = false;
}
PersistenceManager.this.executed();
}
}
private static class UpdateTask implements Runnable {
private Helper<?> helper;
private UpdateTaskCallback callback;
public UpdateTask(Helper<?> helper, UpdateTaskCallback callback) {
this.helper = helper;
this.callback = callback;
}
@Override
public void run() {
log.debug("~~> UPDATE_TASK :: RUN");
try {
log.debug("~~> UPDATE_TASK :: RUN :: sleeping");
Thread.currentThread().sleep(15000);
log.debug("~~> UPDATE_TASK :: RUN :: processig");
// TODO add support for different groups
this.helper.saveClusterState("default");
log.debug("~~> UPDATE_TASK :: RUN :: processed");
this.callback.executed();
} catch (InterruptedException e) {
log.error("UpdateTask", e);
}
}
}
private final UpdateMarker marker = new UpdateMarker();
private Helper<T> helper;
private Executor executor = new Executor();
public PersistenceManager(ServiceProvider serviceProvider, String mapBaseName, String classifier, Class<T> dataClass) {
helper = new Helper<>(serviceProvider, mapBaseName, classifier, dataClass);
}
public void restore() {
// this is called only once before the consumer started
// so we can call helper directly
helper.loadClusterState("default");
}
public void persist() {
this.updated();
}
protected void runExecutor() {
synchronized (executor) {
if (!executor.isRunning)
executor.run();
}
}
public void updated() {
log.info("~~> UPDATED");
synchronized (marker) {
marker.update();
}
runExecutor();
}
protected synchronized void clear() {
synchronized (marker) {
marker.clear();
}
}
protected synchronized void executed() {
boolean updated = false;
synchronized (marker) {
updated = marker.isUpdated();
}
if (updated)
runExecutor();
}
}

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/*-
* ~~~~~~licensing~~~~~~
* cluster-persistence-service
* ==========
* Copyright (C) 2020 - 2021 EmDev LLC
* ==========
* 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.
* ~~~~~~/licensing~~~~~~
*/
package ru.entaxy.esb.platform.core.cluster.persistence;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.util.Base64;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class Serializer<T> {
private static final Logger log = LoggerFactory.getLogger(Serializer.class);
private Class<T> dataClass;
public Serializer(Class<T> clazz) {
this.dataClass = clazz;
}
public String toString(T object) {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ObjectOutputStream oos;
try {
oos = new ObjectOutputStream( baos );
oos.writeObject((Serializable) object);
oos.close();
} catch (IOException e) {
log.error("Serializer.toString", e);
}
return Base64.getEncoder().encodeToString(baos.toByteArray());
}
public T fromString(String str) {
byte [] data = Base64.getDecoder().decode(str);
// ClassLoader original = Thread.currentThread().getContextClassLoader();
// Thread.currentThread().setContextClassLoader(dataClass.getClassLoader());
T result = null;
try {
ObjectInputStream ois = new ObjectInputStream(
new ByteArrayInputStream( data ) );
Object o = ois.readObject();
ois.close();
result = dataClass.cast(o);
} catch (Exception e) {
result = null;
}
// Thread.currentThread().setContextClassLoader(original);
return result;
}
}

30
platform/runtime/core/cluster/cluster-persistence-service/src/main/java/ru/entaxy/esb/platform/core/cluster/persistence/ServiceProvider.java Normal file
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/*-
* ~~~~~~licensing~~~~~~
* cluster-persistence-service
* ==========
* Copyright (C) 2020 - 2021 EmDev LLC
* ==========
* 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.
* ~~~~~~/licensing~~~~~~
*/
package ru.entaxy.esb.platform.core.cluster.persistence;
import org.apache.karaf.cellar.core.ClusterManager;
import org.apache.karaf.cellar.core.GroupManager;
public interface ServiceProvider {
public ClusterManager getClusterManager();
public GroupManager getGroupManager();
}

228
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/*-
* ~~~~~~licensing~~~~~~
* hazelcast-test
* ==========
* Copyright (C) 2020 - 2021 EmDev LLC
* ==========
* 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.
* ~~~~~~/licensing~~~~~~
*/
package ru.entaxy.esb.platform.core.cluster.persistence.activator;
import java.util.Hashtable;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import org.apache.karaf.cellar.bundle.BundleState;
import org.apache.karaf.cellar.bundle.Constants;
import org.apache.karaf.cellar.bundle.management.CellarBundleMBean;
import org.apache.karaf.cellar.core.ClusterManager;
import org.apache.karaf.cellar.core.GroupManager;
import org.apache.karaf.cellar.core.event.EventHandler;
import org.apache.karaf.features.FeaturesService;
import org.apache.karaf.util.tracker.BaseActivator;
import org.apache.karaf.util.tracker.annotation.ProvideService;
import org.apache.karaf.util.tracker.annotation.RequireService;
import org.apache.karaf.util.tracker.annotation.Services;
import org.osgi.service.cm.ConfigurationAdmin;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.hazelcast.core.HazelcastInstance;
import com.hazelcast.core.Member;
import com.hazelcast.core.MemberAttributeEvent;
import com.hazelcast.core.MembershipEvent;
import com.hazelcast.core.MembershipListener;
import ru.entaxy.esb.platform.core.cluster.persistence.PersistenceManager;
import ru.entaxy.esb.platform.core.cluster.persistence.ServiceProvider;
import ru.entaxy.esb.platform.core.cluster.persistence.handler.LocalBundleEventHandler;
import ru.entaxy.esb.platform.core.cluster.persistence.handler.LocalEventHandlerRegistryDispatcher;
import ru.entaxy.esb.platform.core.cluster.persistence.handler.LocalHandlerRegistry;
import ru.entaxy.esb.platform.core.cluster.persistence.handler.LocalTopicConsumer;
@Services(requires = {
@RequireService(ClusterManager.class),
@RequireService(GroupManager.class),
@RequireService(CellarBundleMBean.class),
@RequireService(ConfigurationAdmin.class),
@RequireService(FeaturesService.class),
@RequireService(HazelcastInstance.class)
},
provides = {
@ProvideService(EventHandler.class)
}
)
public class Activator extends BaseActivator implements ServiceProvider, MembershipListener {
private static final String CLASSIFIER_BUNDLE = "bundle";
private static final Logger log = LoggerFactory.getLogger(BaseActivator.class);
private LocalBundleEventHandler bundleEventHandler;
private LocalTopicConsumer consumer;
private LocalEventHandlerRegistryDispatcher dispatcher;
private LocalHandlerRegistry handlerRegistry;
private ClusterManager clusterManager;
private GroupManager groupManager;
private HazelcastInstance hazelcastInstance;
private Map<String, PersistenceManager> managers = new ConcurrentHashMap<>();
@Override
protected void doStart() throws Exception {
clusterManager = getTrackedService(ClusterManager.class);
if (clusterManager == null)
return;
groupManager = getTrackedService(GroupManager.class);
if (groupManager == null)
return;
ConfigurationAdmin configurationAdmin = getTrackedService(ConfigurationAdmin.class);
if (configurationAdmin == null)
return;
FeaturesService featuresService = getTrackedService(FeaturesService.class);
if (featuresService == null)
return;
hazelcastInstance = getTrackedService(HazelcastInstance.class);
if (hazelcastInstance == null)
return;
handlerRegistry = new LocalHandlerRegistry<>();
/*
* bundle management
*/
PersistenceManager<BundleState> bundlePersistenceManager = new PersistenceManager<>(this
, Constants.BUNDLE_MAP
, CLASSIFIER_BUNDLE
, BundleState.class);
this.managers.put(CLASSIFIER_BUNDLE, bundlePersistenceManager);
bundleEventHandler = new LocalBundleEventHandler();
bundleEventHandler.setConfigurationAdmin(configurationAdmin);
bundleEventHandler.setClusterManager(clusterManager);
bundleEventHandler.setGroupManager(groupManager);
bundleEventHandler.setBundleContext(bundleContext);
bundleEventHandler.setFeaturesService(featuresService);
bundleEventHandler.setPersistenceManager(bundlePersistenceManager);
bundleEventHandler.init();
handlerRegistry.addHandler(bundleEventHandler);
/*
* feature management
*/
// TODO
/*
* kar management
*/
// TODO
/*
* common services
*/
dispatcher = new LocalEventHandlerRegistryDispatcher<>();
dispatcher.setHandlerRegistry(handlerRegistry);
dispatcher.init();
consumer = new LocalTopicConsumer();
consumer.setInstance(hazelcastInstance);
consumer.setDispatcher(dispatcher);
consumer.setNode(clusterManager.getNode());
consumer.setConfigurationAdmin(configurationAdmin);
consumer.init();
if (iAmAlone()) {
restoreAll();
consumer.start();
}
hazelcastInstance.getCluster().addMembershipListener(this);
}
protected void checkStartStopConsumer() {
if (iAmAlone())
consumer.start();
else
consumer.stop();
}
protected void restoreAll() {
for (PersistenceManager pm: managers.values())
pm.restore();
}
protected void persistAll() {
for (PersistenceManager pm: managers.values())
pm.persist();
}
protected boolean iAmAlone() {
if (hazelcastInstance.getCluster().getMembers().size()>1)
return false;
return true;
}
@Override
protected void doStop() {
// TODO Auto-generated method stub
super.doStop();
}
@Override
public ClusterManager getClusterManager() {
return clusterManager;
}
@Override
public GroupManager getGroupManager() {
return groupManager;
}
@Override
public void memberAdded(MembershipEvent membershipEvent) {
Member member = membershipEvent.getMember();
Member local = hazelcastInstance.getCluster().getLocalMember();
checkStartStopConsumer();
}
@Override
public void memberAttributeChanged(MemberAttributeEvent event) {
// TODO Auto-generated method stub
}
@Override
public void memberRemoved(MembershipEvent membershipEvent) {
Member member = membershipEvent.getMember();
Member local = hazelcastInstance.getCluster().getLocalMember();
if (member.equals(local))
consumer.stop();
else if (iAmAlone()) {
// all other nodes gone
persistAll();
consumer.start();
}
}
}

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/*-
* ~~~~~~licensing~~~~~~
* cluster-persistence-service
* ==========
* Copyright (C) 2020 - 2021 EmDev LLC
* ==========
* 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.
* ~~~~~~/licensing~~~~~~
*/
/*
* 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 ru.entaxy.esb.platform.core.cluster.persistence.handler;
import org.apache.karaf.cellar.bundle.BundleEventHandler;
import org.apache.karaf.cellar.bundle.BundleState;
import org.apache.karaf.cellar.bundle.BundleSupport;
import org.apache.karaf.cellar.bundle.ClusterBundleEvent;
import org.apache.karaf.cellar.bundle.Constants;
import org.apache.karaf.cellar.core.Configurations;
import org.apache.karaf.cellar.core.control.BasicSwitch;
import org.apache.karaf.cellar.core.control.Switch;
import org.apache.karaf.cellar.core.control.SwitchStatus;
import org.apache.karaf.cellar.core.event.EventHandler;
import org.apache.karaf.cellar.core.event.EventType;
import org.apache.karaf.features.Feature;
import org.osgi.framework.Bundle;
import org.osgi.framework.BundleException;
import org.osgi.framework.wiring.FrameworkWiring;
import org.osgi.service.cm.Configuration;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import ru.entaxy.esb.platform.core.cluster.persistence.PersistenceManager;
import java.util.Collections;
import java.util.List;
import java.util.Map;
/**
* The BundleEventHandler is responsible to process received cluster event for bundles.
*/
public class LocalBundleEventHandler extends BundleSupport implements EventHandler<ClusterBundleEvent> {
private static final transient Logger log = LoggerFactory.getLogger(LocalBundleEventHandler.class);
public static final String SWITCH_ID = "org.apache.karaf.cellar.bundle.handler";
private final Switch eventSwitch = new BasicSwitch(SWITCH_ID);
private PersistenceManager persistenceManager;
/**
* Handle received bundle cluster events.
*
* @param event the received bundle cluster event.
*/
@Override
public void handle(ClusterBundleEvent event) {
// check if the handler switch is ON
if (this.getSwitch().getStatus().equals(SwitchStatus.OFF)) {
log.debug("CELLAR BUNDLE: {} switch is OFF, cluster event is not handled", SWITCH_ID);
return;
}
if (groupManager == null) {
//in rare cases for example right after installation this happens!
log.error("CELLAR BUNDLE: retrieved event {} while groupManager is not available yet!", event);
return;
}
// check if the group is local
if (!groupManager.isLocalGroup(event.getSourceGroup().getName())) {
log.debug("CELLAR BUNDLE: node is not part of the event cluster group {}", event.getSourceGroup().getName());
return;
}
try {
// check if it's not a "local" event
if (event.getLocal() != null && event.getLocal().getId().equalsIgnoreCase(clusterManager.getNode().getId())) {
log.trace("CELLAR BUNDLE: cluster event is local (coming from local synchronizer or listener)");
return;
}
// check if the pid is marked as local.
if (isAllowed(event.getSourceGroup(), Constants.CATEGORY, event.getLocation(), EventType.INBOUND)) {
// check the features first
List<Feature> matchingFeatures = retrieveFeature(event.getLocation());
for (Feature feature : matchingFeatures) {
if (!isAllowed(event.getSourceGroup(), "feature", feature.getName(), EventType.INBOUND)) {
log.trace("CELLAR BUNDLE: bundle {} is contained in feature {} marked BLOCKED INBOUND for cluster group {}", event.getLocation(), feature.getName(), event.getSourceGroup().getName());
return;
}
}
// TODO mark cluster state as needed to be saved
log.info("-->> WE NEED TO SAVE CLUSTER STATE");
this.persistenceManager.updated();
} else
log.trace("CELLAR BUNDLE: bundle {} is marked BLOCKED INBOUND for cluster group {}", event.getSymbolicName(), event.getSourceGroup().getName());
} catch (BundleException e) {
log.error("CELLAR BUNDLE: failed to install bundle {}/{}.", new Object[]{event.getSymbolicName(), event.getVersion()}, e);
} catch (Exception e) {
log.error("CELLAR BUNDLE: failed to handle bundle event", e);
}
}
public void init() {
// nothing to do
}
public void destroy() {
// nothing to do
}
/**
* Get the cluster bundle event handler switch.
*
* @return the cluster bundle event handler switch.
*/
@Override
public Switch getSwitch() {
// load the switch status from the config
try {
Configuration configuration = configurationAdmin.getConfiguration(Configurations.NODE, null);
if (configuration != null) {
Boolean status = new Boolean((String) configuration.getProperties().get(Configurations.HANDLER
+ "."
+ BundleEventHandler.class.getName()));
if (status) {
eventSwitch.turnOn();
} else {
eventSwitch.turnOff();
}
}
} catch (Exception e) {
// ignore
}
return eventSwitch;
}
public void setPersistenceManager(PersistenceManager persistenceManager) {
this.persistenceManager = persistenceManager;
}
/**
* Get the cluster event type.
*
* @return the cluster bundle event type.
*/
@Override
public Class<ClusterBundleEvent> getType() {
return ClusterBundleEvent.class;
}
}

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/*-
* ~~~~~~licensing~~~~~~
* cluster-persistence-service
* ==========
* Copyright (C) 2020 - 2021 EmDev LLC
* ==========
* 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.
* ~~~~~~/licensing~~~~~~
*/
/*
* 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 ru.entaxy.esb.platform.core.cluster.persistence.handler;
import org.apache.karaf.cellar.core.event.Event;
import org.apache.karaf.cellar.core.event.EventHandler;
import org.apache.karaf.cellar.core.event.EventHandlerRegistry;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Event dispatcher task.
*/
public class LocalEventDispatchTask<E extends Event> implements Runnable {
private static final transient Logger LOGGER = LoggerFactory.getLogger(LocalEventDispatchTask.class);
private static final long DEFAULT_TIMEOUT = 30000;
private E event;
private EventHandlerRegistry handlerRegistry;
private long timeout;
private long interval = 1000;
public LocalEventDispatchTask(E event, EventHandlerRegistry handlerRegistry) {
this.event = event;
this.handlerRegistry = handlerRegistry;
if (System.getProperty("cellar.timeout") != null) {
try {
this.timeout = Long.parseLong(System.getProperty("cellar.timeout"));
} catch (Exception e) {
this.timeout = DEFAULT_TIMEOUT;
}
} else {
this.timeout = DEFAULT_TIMEOUT;
}
}
public LocalEventDispatchTask(E event, EventHandlerRegistry handlerRegistry, long timeout) {
this.event = event;
this.handlerRegistry = handlerRegistry;
this.timeout = timeout;
}
public LocalEventDispatchTask(EventHandlerRegistry handlerRegistry, long timeout, long interval, E event) {
this.handlerRegistry = handlerRegistry;
this.timeout = timeout;
this.interval = interval;
this.event = event;
}
@Override
public void run() {
try {
boolean dispatched = false;
for (long delay = 0; delay < timeout && !dispatched; delay += interval) {
EventHandler handler = handlerRegistry.getHandler(event);
if (handler != null) {
handler.handle(event);
dispatched = true;
} else {
try {
Thread.sleep(interval);
} catch (InterruptedException e) {
LOGGER.warn("Interrupted while waiting for cluster event handler", e);
}
}
}
if (!dispatched) {
LOGGER.warn("Failed to retrieve handler for cluster event {}", event.getClass());
}
} catch (Exception ex) {
LOGGER.error("Error while dispatching task", ex);
}
}
public long getTimeout() {
return timeout;
}
public void setTimeout(long timeout) {
this.timeout = timeout;
}
public long getInterval() {
return interval;
}
public void setInterval(long interval) {
this.interval = interval;
}
}

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/*-
* ~~~~~~licensing~~~~~~
* cluster-persistence-service
* ==========
* Copyright (C) 2020 - 2021 EmDev LLC
* ==========
* 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.
* ~~~~~~/licensing~~~~~~
*/
/*
* 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 ru.entaxy.esb.platform.core.cluster.persistence.handler;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import org.apache.karaf.cellar.core.event.Event;
import org.apache.karaf.cellar.core.event.EventDispatcher;
import org.apache.karaf.cellar.core.event.EventHandlerRegistry;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Event handler service registry dispatcher.
*/
public class LocalEventHandlerRegistryDispatcher<E extends Event> implements EventDispatcher<E> {
private static final transient Logger LOGGER = LoggerFactory.getLogger(LocalEventHandlerRegistryDispatcher.class);
private ExecutorService threadPool;
private EventHandlerRegistry handlerRegistry;
public void init() {
if (threadPool == null) {
if (Boolean.getBoolean(this.getClass().getName() + ".threadPool.singleThreadExecutor")) {
LOGGER.info("Will use an Executor that uses a single worker thread");
threadPool = Executors.newSingleThreadExecutor();
} else {
LOGGER.info("Will use an Executor with a pool of threads");
threadPool = Executors.newCachedThreadPool();
}
}
}
/**
* Dispatch a cluster {@code Event} to the appropriate cluster {@code EventHandler}.
*
* @param event the cluster event to dispatch.
*/
public void dispatch(E event) {
LocalEventDispatchTask task = new LocalEventDispatchTask(event, handlerRegistry);
threadPool.execute(task);
}
public EventHandlerRegistry getHandlerRegistry() {
return handlerRegistry;
}
public void setHandlerRegistry(EventHandlerRegistry handlerRegistry) {
this.handlerRegistry = handlerRegistry;
}
public ExecutorService getThreadPool() {
return threadPool;
}
public void setThreadPool(ExecutorService threadPool) {
this.threadPool = threadPool;
}
public void destroy() {
if (threadPool != null) {
threadPool.shutdown();
}
}
}

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/*-
* ~~~~~~licensing~~~~~~
* cluster-persistence-service
* ==========
* Copyright (C) 2020 - 2021 EmDev LLC
* ==========
* 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.
* ~~~~~~/licensing~~~~~~
*/
package ru.entaxy.esb.platform.core.cluster.persistence.handler;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import org.apache.karaf.cellar.core.event.Event;
import org.apache.karaf.cellar.core.event.EventHandler;
import org.apache.karaf.cellar.core.event.EventHandlerRegistry;
public class LocalHandlerRegistry<E extends Event> implements EventHandlerRegistry<E> {
private Map<Class,EventHandler> eventHandlerMap = new ConcurrentHashMap<Class,EventHandler>();
@Override
public EventHandler<E> getHandler(E event) {
return eventHandlerMap.get(event.getClass());
}
public void addHandler(EventHandler eventHandler) {
eventHandlerMap.put(eventHandler.getType(), eventHandler);
}
}

185
platform/runtime/core/cluster/cluster-persistence-service/src/main/java/ru/entaxy/esb/platform/core/cluster/persistence/handler/LocalTopicConsumer.java Normal file
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/*-
* ~~~~~~licensing~~~~~~
* cluster-persistence-service
* ==========
* Copyright (C) 2020 - 2021 EmDev LLC
* ==========
* 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.
* ~~~~~~/licensing~~~~~~
*/
/*
* 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 ru.entaxy.esb.platform.core.cluster.persistence.handler;
import com.hazelcast.core.HazelcastInstance;
import com.hazelcast.core.ITopic;
import com.hazelcast.core.Message;
import com.hazelcast.core.MessageListener;
import org.apache.karaf.cellar.core.Configurations;
import org.apache.karaf.cellar.core.Dispatcher;
import org.apache.karaf.cellar.core.Node;
import org.apache.karaf.cellar.core.control.BasicSwitch;
import org.apache.karaf.cellar.core.control.Switch;
import org.apache.karaf.cellar.core.control.SwitchStatus;
import org.apache.karaf.cellar.core.event.Event;
import org.apache.karaf.cellar.core.event.EventConsumer;
import org.apache.karaf.cellar.hazelcast.Constants;
import org.osgi.service.cm.Configuration;
import org.osgi.service.cm.ConfigurationAdmin;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Consumes messages from the Hazelcast {@code ITopic} and calls the {@code EventDispatcher}.
*/
public class LocalTopicConsumer<E extends Event> implements EventConsumer<E>, MessageListener<E> {
private static final transient Logger log = LoggerFactory.getLogger(LocalTopicConsumer.class);
public static final String SWITCH_ID = "org.apache.karaf.cellar.topic.consumer";
private final Switch eventSwitch = new BasicSwitch(SWITCH_ID);
private String registrationId;
private HazelcastInstance instance;
private ITopic topic;
private Dispatcher dispatcher;
private Node node;
private ConfigurationAdmin configurationAdmin;
private boolean isConsuming;
public void init() {
if (topic == null) {
topic = instance.getTopic(Constants.TOPIC);
}
}
public void destroy() {
stop();
}
@Override
public void consume(E event) {
// check if event has a specified destination.
if ((event.getDestination() == null || event.getDestination().contains(node)) && (this.getSwitch().getStatus().equals(SwitchStatus.ON) || event.getForce())) {
log.info("==>> EVENT TO PROCESS");
dispatcher.dispatch(event);
} else {
if (eventSwitch.getStatus().equals(SwitchStatus.OFF)) {
log.debug("CELLAR HAZELCAST: {} switch is OFF, cluster event is not consumed", SWITCH_ID);
}
}
}
@Override
public void start() {
isConsuming = true;
if (topic != null) {
registrationId = topic.addMessageListener(this);
} else {
topic = instance.getTopic(Constants.TOPIC);
registrationId = topic.addMessageListener(this);
}
}
@Override
public void stop() {
isConsuming = false;
if (topic != null) {
topic.removeMessageListener(registrationId);
}
}
@Override
public Boolean isConsuming() {
return isConsuming;
}
@Override
public void onMessage(Message<E> message) {
consume(message.getMessageObject());
}
public Dispatcher getDispatcher() {
return dispatcher;
}
public void setDispatcher(Dispatcher dispatcher) {
this.dispatcher = dispatcher;
}
public HazelcastInstance getInstance() {
return instance;
}
public void setInstance(HazelcastInstance instance) {
this.instance = instance;
}
public ITopic getTopic() {
return topic;
}
public void setTopic(ITopic topic) {
this.topic = topic;
}
@Override
public Switch getSwitch() {
// load the switch status from the config
try {
Configuration configuration = configurationAdmin.getConfiguration(Configurations.NODE, null);
if (configuration != null) {
Boolean status = new Boolean((String) configuration.getProperties().get(Configurations.CONSUMER));
if (status) {
eventSwitch.turnOn();
} else {
eventSwitch.turnOff();
}
}
} catch (Exception e) {
// ignore
}
return eventSwitch;
}
public Node getNode() {
return node;
}
public void setNode(Node node) {
this.node = node;
}
public ConfigurationAdmin getConfigurationAdmin() {
return configurationAdmin;
}
public void setConfigurationAdmin(ConfigurationAdmin configurationAdmin) {
this.configurationAdmin = configurationAdmin;
}
}

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platform/runtime/core/cluster/pom.xml Normal file
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>ru.entaxy.esb.platform.runtime</groupId>
<artifactId>core</artifactId>
<version>1.8.1</version>
</parent>
<groupId>ru.entaxy.esb.platform.runtime.core</groupId>
<artifactId>cluster</artifactId>
<packaging>pom</packaging>
<name>ENTAXY :: PLATFORM :: CORE :: CLUSTER</name>
<description>ENTAXY :: PLATFORM :: CORE :: CLUSTER</description>
<modules>
<module>cluster-persistence-service</module>
</modules>
</project>