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Issues & Decisions
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
...
Background
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(); |