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Background
Acceptance Criteria
Add a method to cps-service/src/main/java/org/onap/cps/api/CpsModuleService.java to retrieve all modules and version known by CPS
Steps
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List all know modules and revision know by CPS. i.e list the module and revisions of yang resources in the yang_resources db table. Currently within this yang_resources table, we are storing fileName, content and checksum, we do not store module metadata. To retrieve module name and revision, we need to store these information when a yang resource is being added to the db table.
Proposal
For the following open question on the Jira.
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// need to add the following pattern in line 79
private static final Pattern RFC6020_RECOMMENDED_FILENAME_PATTERN = Pattern.compile("([\\w-]+)@(\\d{4}-\\d{2}-\\d{2})(?:\\.yang)?", Pattern.CASE_INSENSITIVE);
// in the method synchronizeYangResources the following changes need to be added
// after line 123
final Map<String,String> metaDataMap = getModuleNameAndRevision(entry.getKey(), entry.getValue());
// after line 127
yangResourceEntity.setModuleName(metaDataMap.get("moduleName"));
yangResourceEntity.setRevision(metaDataMap.get("revision"));
// at the end of the file add the following methods
private static HashMap<String, String> getModuleNameAndRevision(final String sourceName, final String source) {
final HashMap<String, String> metaDataMap = new HashMap<>();
final var revisionSourceIdentifier =
createIdentifierFromSourceName(checkNotNull(sourceName));
YangTextSchemaSource tempYangTextSchemaSource = new YangTextSchemaSource(revisionSourceIdentifier) {
@Override
protected MoreObjects.ToStringHelper addToStringAttributes(
final MoreObjects.ToStringHelper toStringHelper) {
return toStringHelper;
}
@Override
public InputStream openStream() {
return new ByteArrayInputStream(source.getBytes(StandardCharsets.UTF_8));
}
};
try {
final var dependencyInfo = YangModelDependencyInfo.forYangText(tempYangTextSchemaSource);
metaDataMap.put("moduleName", dependencyInfo.getName());
metaDataMap.put("revision", String.valueOf(dependencyInfo.getRevision()));
} catch (IOException e) {
e.printStackTrace();
} catch (YangSyntaxErrorException e) {
e.printStackTrace();
}
return metaDataMap;
}
private static RevisionSourceIdentifier createIdentifierFromSourceName(final String sourceName) {
final var matcher = RFC6020_RECOMMENDED_FILENAME_PATTERN.matcher(sourceName);
if (matcher.matches()) {
return RevisionSourceIdentifier.create(matcher.group(1), Revision.of(matcher.group(2)));
}
return RevisionSourceIdentifier.create(sourceName);
} |
Following on from this, we need to add a liquibase step to update the yang_resources table to include the two new columns. To do this, create a new yaml file → 10-add-column-to-yang-resources-table.yaml
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databaseChangeLog:
- changeset:
id: 10
label: addModuleNameAndRevisionColumn
author: cps
changes:
- addColumn:
tableName: yang_resource
columns:
- column:
name: module_name
type: TEXT
- column:
name: revision
type: TEXT |
The cps-ri/src/main/resources/changelog/changelog-master.yaml will also include the following at the end of the file
- include:
file: changelog/db/changes/10-add-column-to-yang-resources-table.yaml
With these changes, when a yang resource is being inserted into the database the module name and revision will also be included.
Finally, we need to add a method to cps-service/src/main/java/org/onap/cps/api/CpsModuleService.java to retrieve all modules and version known by CPS.
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/**
* Retrieve all modules and revisions known by CPS
* @return a list of ModuleReferences
*/
List<ModuleReferences> getAllYangResources(); |
For this we will use an existing model called ModuleReference in the cps-service/src/main/java/org/onap/cps/spi/model/ModuleReference.java
Another method getAllYangResources will also need to be added in the cps-service/src/main/java/org/onap/cps/spi/CpsModulePersistenceService.java
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/**
* Returns all YANG resources
*
* @return List of ModuleReferences
*/
List<ModuleReferences> getAllYangResources(); |