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SiteWhere Microservice Components Library
/*
* Copyright (c) SiteWhere, LLC. All rights reserved. http://www.sitewhere.com
*
* The software in this package is published under the terms of the CPAL v1.0
* license, a copy of which has been included with this distribution in the
* LICENSE.txt file.
*/
package com.sitewhere.microservice.scripting;
import java.nio.ByteBuffer;
import java.util.Date;
import java.util.List;
import java.util.UUID;
import com.sitewhere.microservice.lifecycle.LifecycleComponent;
import com.sitewhere.microservice.util.Base58;
import com.sitewhere.spi.SiteWhereException;
import com.sitewhere.spi.microservice.IFunctionIdentifier;
import com.sitewhere.spi.microservice.scripting.IScriptCreateRequest;
import com.sitewhere.spi.microservice.scripting.IScriptManagement;
import com.sitewhere.spi.microservice.scripting.IScriptMetadata;
import com.sitewhere.spi.microservice.scripting.IScriptVersion;
/**
* Default {@link IScriptManagement} implementation. Stores scripts in
* Kubernetes.
*/
public class KubernetesScriptManagement extends LifecycleComponent implements IScriptManagement {
/*
* @see com.sitewhere.spi.microservice.scripting.IScriptManagement#
* getScriptMetadataZkPath(com.sitewhere.spi.microservice.IFunctionIdentifier,
* java.util.UUID)
*/
@Override
public String getScriptMetadataZkPath(IFunctionIdentifier identifier, UUID tenantId) throws SiteWhereException {
return null;
}
/*
* @see com.sitewhere.spi.microservice.scripting.IScriptManagement#
* getScriptContentZkPath(com.sitewhere.spi.microservice.IFunctionIdentifier,
* java.util.UUID)
*/
@Override
public String getScriptContentZkPath(IFunctionIdentifier identifier, UUID tenantId) throws SiteWhereException {
return null;
}
/*
* @see com.sitewhere.spi.microservice.scripting.IScriptManagement#
* getScriptMetadataList(com.sitewhere.spi.microservice.IFunctionIdentifier,
* java.util.UUID)
*/
@Override
public List getScriptMetadataList(IFunctionIdentifier identifier, UUID tenantId)
throws SiteWhereException {
return null;
}
/*
* @see
* com.sitewhere.spi.microservice.scripting.IScriptManagement#getScriptMetadata(
* com.sitewhere.spi.microservice.IFunctionIdentifier, java.util.UUID,
* java.lang.String)
*/
@Override
public IScriptMetadata getScriptMetadata(IFunctionIdentifier identifier, UUID tenantId, String scriptId)
throws SiteWhereException {
return null;
}
/*
* @see
* com.sitewhere.spi.microservice.scripting.IScriptManagement#createScript(com.
* sitewhere.spi.microservice.IFunctionIdentifier, java.util.UUID,
* com.sitewhere.spi.microservice.scripting.IScriptCreateRequest)
*/
@Override
public IScriptMetadata createScript(IFunctionIdentifier identifier, UUID tenantId, IScriptCreateRequest request)
throws SiteWhereException {
IScriptMetadata existing = getScriptMetadata(identifier, tenantId, request.getId());
if (existing != null) {
throw new SiteWhereException("A script with that id already exists.");
}
ScriptMetadata created = createScriptMetadata(request);
try {
IScriptVersion version = created.getVersions().get(0);
store(identifier, tenantId, created, version, request.getContent());
activateScript(identifier, tenantId, request.getId(), version.getVersionId());
return created;
} catch (Exception e) {
throw new SiteWhereException("Unable to store script metadata.", e);
}
}
/*
* @see
* com.sitewhere.spi.microservice.scripting.IScriptManagement#getScriptContent(
* com.sitewhere.spi.microservice.IFunctionIdentifier, java.util.UUID,
* java.lang.String, java.lang.String)
*/
@Override
public byte[] getScriptContent(IFunctionIdentifier identifier, UUID tenantId, String scriptId, String versionId)
throws SiteWhereException {
return null;
}
/*
* @see
* com.sitewhere.spi.microservice.scripting.IScriptManagement#updateScript(com.
* sitewhere.spi.microservice.IFunctionIdentifier, java.util.UUID,
* java.lang.String, java.lang.String,
* com.sitewhere.spi.microservice.scripting.IScriptCreateRequest)
*/
@Override
public IScriptMetadata updateScript(IFunctionIdentifier identifier, UUID tenantId, String scriptId,
String versionId, IScriptCreateRequest request) throws SiteWhereException {
IScriptMetadata meta = assureScriptMetadata(identifier, tenantId, scriptId);
IScriptVersion version = assureScriptVersion(meta, versionId);
try {
store(identifier, tenantId, meta, version, request.getContent());
return meta;
} catch (Exception e) {
throw new SiteWhereException("Unable to store script metadata.", e);
}
}
/*
* @see
* com.sitewhere.spi.microservice.scripting.IScriptManagement#cloneScript(com.
* sitewhere.spi.microservice.IFunctionIdentifier, java.util.UUID,
* java.lang.String, java.lang.String, java.lang.String)
*/
@Override
public IScriptVersion cloneScript(IFunctionIdentifier identifier, UUID tenantId, String scriptId, String versionId,
String comment) throws SiteWhereException {
// IScriptMetadata meta = assureScriptMetadata(identifier, tenantId, scriptId);
// assureScriptVersion(meta, versionId);
// ScriptVersion created = new ScriptVersion();
// created.setVersionId(generateUniqueId());
// created.setComment(comment);
// created.setCreatedDate(new Date());
// meta.getVersions().add(created);
//
// try {
// // Save updated metadata.
// String metaPath = getScriptMetadataZkPath(identifier, tenantId) + "/" +
// getMetadataFilePath(meta);
// byte[] metaContent = MarshalUtils.marshalJson(meta);
// if (getZookeeperManager().getCurator().checkExists().forPath(metaPath) ==
// null) {
// getZookeeperManager().getCurator().create().creatingParentsIfNeeded().forPath(metaPath,
// metaContent);
// } else {
// getZookeeperManager().getCurator().setData().forPath(metaPath, metaContent);
// }
//
// // Save new version.
// String contentPath = getScriptMetadataZkPath(identifier, tenantId) + "/"
// + getVersionContentPath(meta, created);
// byte[] content = getScriptContent(identifier, tenantId, scriptId, versionId);
// if (getZookeeperManager().getCurator().checkExists().forPath(contentPath) ==
// null) {
// getZookeeperManager().getCurator().create().creatingParentsIfNeeded().forPath(contentPath,
// content);
// } else {
// getZookeeperManager().getCurator().setData().forPath(contentPath, content);
// }
// return created;
// } catch (Exception e) {
// throw new SiteWhereException("Unable to clone script.", e);
// }
return null;
}
/*
* @see
* com.sitewhere.spi.microservice.scripting.IScriptManagement#activateScript(com
* .sitewhere.spi.microservice.IFunctionIdentifier, java.util.UUID,
* java.lang.String, java.lang.String)
*/
@Override
public IScriptMetadata activateScript(IFunctionIdentifier identifier, UUID tenantId, String scriptId,
String versionId) throws SiteWhereException {
// IScriptMetadata meta = assureScriptMetadata(identifier, tenantId, scriptId);
// assureScriptVersion(meta, versionId);
//
// try {
// // Update active version id if changed.
// if (!meta.getActiveVersion().equals(versionId)) {
// ((ScriptMetadata) meta).setActiveVersion(versionId);
// String metaPath = getScriptMetadataZkPath(identifier, tenantId) + "/" +
// getMetadataFilePath(meta);
// byte[] metaContent = MarshalUtils.marshalJson(meta);
// if (getZookeeperManager().getCurator().checkExists().forPath(metaPath) ==
// null) {
// getZookeeperManager().getCurator().create().creatingParentsIfNeeded().forPath(metaPath,
// metaContent);
// } else {
// getZookeeperManager().getCurator().setData().forPath(metaPath, metaContent);
// }
// }
//
// // Create content file.
// String contentPath = getScriptContentZkPath(identifier, tenantId) + "/" +
// meta.getId() + "."
// + meta.getType();
// byte[] content = getScriptContent(identifier, tenantId, scriptId, versionId);
// if (getZookeeperManager().getCurator().checkExists().forPath(contentPath) ==
// null) {
// getZookeeperManager().getCurator().create().creatingParentsIfNeeded().forPath(contentPath,
// content);
// } else {
// getZookeeperManager().getCurator().setData().forPath(contentPath, content);
// }
// return meta;
// } catch (Exception e) {
// throw new SiteWhereException("Unable to activate script version.", e);
// }
return null;
}
/*
* @see
* com.sitewhere.spi.microservice.scripting.IScriptManagement#deleteScript(com.
* sitewhere.spi.microservice.IFunctionIdentifier, java.util.UUID,
* java.lang.String)
*/
@Override
public IScriptMetadata deleteScript(IFunctionIdentifier identifier, UUID tenantId, String scriptId)
throws SiteWhereException {
// IScriptMetadata meta = assureScriptMetadata(identifier, tenantId, scriptId);
//
// try {
// // Delete metadata.
// String metaPath = getScriptMetadataZkPath(identifier, tenantId) + "/" +
// getMetadataFilePath(meta);
// if (getZookeeperManager().getCurator().checkExists().forPath(metaPath) !=
// null) {
// getZookeeperManager().getCurator().delete().forPath(metaPath);
// }
//
// // Delete all versions.
// String versionsPath = getScriptMetadataZkPath(identifier, tenantId) + "/" +
// meta.getId();
// if (getZookeeperManager().getCurator().checkExists().forPath(versionsPath) !=
// null) {
// getZookeeperManager().getCurator().delete().deletingChildrenIfNeeded().forPath(versionsPath);
// }
//
// // Delete content.
// String contentPath = getScriptContentZkPath(identifier, tenantId) + "/" +
// meta.getId() + "."
// + meta.getType();
// if (getZookeeperManager().getCurator().checkExists().forPath(contentPath) !=
// null) {
// getZookeeperManager().getCurator().delete().forPath(contentPath);
// }
// return meta;
// } catch (Exception e) {
// throw new SiteWhereException("Unable to delete script.", e);
// }
//
return null;
}
/**
* Assure that script metadata exists for the given id.
*
* @param identifier
* @param tenantId
* @param scriptId
* @return
* @throws SiteWhereException
*/
protected IScriptMetadata assureScriptMetadata(IFunctionIdentifier identifier, UUID tenantId, String scriptId)
throws SiteWhereException {
IScriptMetadata meta = getScriptMetadata(identifier, tenantId, scriptId);
if (meta == null) {
throw new SiteWhereException("Script not found: " + scriptId);
}
return meta;
}
/**
* Assure that the script meta content contains the given version id.
*
* @param meta
* @param versionId
* @return
* @throws SiteWhereException
*/
protected IScriptVersion assureScriptVersion(IScriptMetadata meta, String versionId) throws SiteWhereException {
IScriptVersion version = getScriptVersion(meta, versionId);
if (version == null) {
throw new SiteWhereException("No version of '" + meta.getId() + "' matches '" + versionId + "'.");
}
return version;
}
/**
* Store updated metadata and content for a script/version.
*
* @param identifier
* @param tenantId
* @param meta
* @param version
* @param contentStr
* @throws SiteWhereException
*/
protected void store(IFunctionIdentifier identifier, UUID tenantId, IScriptMetadata meta, IScriptVersion version,
String contentStr) throws SiteWhereException {
// try {
// // Store metadata.
// String metaPath = getScriptMetadataZkPath(identifier, tenantId) + "/" +
// getMetadataFilePath(meta);
// byte[] metaContent = MarshalUtils.marshalJson(meta);
// if (getZookeeperManager().getCurator().checkExists().forPath(metaPath) ==
// null) {
// getZookeeperManager().getCurator().create().creatingParentsIfNeeded().forPath(metaPath,
// metaContent);
// } else {
// getZookeeperManager().getCurator().setData().forPath(metaPath, metaContent);
// }
//
// // Store version content.
// String contentPath = getScriptMetadataZkPath(identifier, tenantId) + "/"
// + getVersionContentPath(meta, version);
// byte[] content = Base64.getDecoder().decode(contentStr);
// if (getZookeeperManager().getCurator().checkExists().forPath(contentPath) ==
// null) {
// getZookeeperManager().getCurator().create().creatingParentsIfNeeded().forPath(contentPath,
// content);
// } else {
// getZookeeperManager().getCurator().setData().forPath(contentPath, content);
// }
// } catch (Exception e) {
// throw new SiteWhereException("Unable to store script metadata.", e);
// }
}
/**
* Create script metadata from request information.
*
* @param request
* @return
*/
protected ScriptMetadata createScriptMetadata(IScriptCreateRequest request) {
ScriptMetadata created = new ScriptMetadata();
created.setId(request.getId());
created.setName(request.getName());
created.setDescription(request.getDescription());
created.setType(request.getType());
String versionId = generateUniqueId();
created.setActiveVersion(versionId);
ScriptVersion version = new ScriptVersion();
version.setVersionId(versionId);
version.setCreatedDate(new Date());
version.setComment(request.getDescription());
created.getVersions().add(version);
return created;
}
/**
* Generate unique id by creating a UUID and encoding the bytes in base 58.
*
* @return
*/
protected String generateUniqueId() {
UUID uuid = UUID.randomUUID();
ByteBuffer bb = ByteBuffer.wrap(new byte[16]);
bb.putLong(uuid.getMostSignificantBits());
bb.putLong(uuid.getLeastSignificantBits());
return Base58.encode(bb.array());
}
/**
* Get relative path for version content.
*
* @param metadata
* @param version
* @return
*/
protected String getVersionContentPath(IScriptMetadata metadata, IScriptVersion version) {
return metadata.getId() + "/" + version.getVersionId();
}
/**
* Get version information based on unique version id.
*
* @param metadata
* @param versionId
* @return
*/
protected IScriptVersion getScriptVersion(IScriptMetadata metadata, String versionId) {
IScriptVersion version = null;
for (IScriptVersion current : metadata.getVersions()) {
if (current.getVersionId().equals(versionId)) {
version = current;
break;
}
}
return version;
}
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