Examples with FlowEntity org.apache.nifi.registry.db.entity.FlowEntity used on opensource projects

Example 31 with FlowEntity

use of org.apache.nifi.registry.db.entity.FlowEntity in project nifi-registry by apache.

the class RegistryService method getFlowSnapshot.

public VersionedFlowSnapshot getFlowSnapshot(final String bucketIdentifier, final String flowIdentifier, final Integer version) {
    if (StringUtils.isBlank(bucketIdentifier)) {
        throw new IllegalArgumentException("Bucket identifier cannot be null or blank");
    }
    if (StringUtils.isBlank(flowIdentifier)) {
        throw new IllegalArgumentException("Flow identifier cannot be null or blank");
    }
    if (version == null) {
        throw new IllegalArgumentException("Version cannot be null or blank");
    }
    readLock.lock();
    try {
        final BucketEntity existingBucket = metadataService.getBucketById(bucketIdentifier);
        if (existingBucket == null) {
            LOGGER.warn("The specified bucket id [{}] does not exist.", bucketIdentifier);
            throw new ResourceNotFoundException("The specified bucket ID does not exist in this registry.");
        }
        // we need to populate the version count here so we have to do this retrieval instead of snapshotEntity.getFlow()
        final FlowEntity flowEntityWithCount = metadataService.getFlowByIdWithSnapshotCounts(flowIdentifier);
        if (flowEntityWithCount == null) {
            LOGGER.warn("The specified flow id [{}] does not exist.", flowIdentifier);
            throw new ResourceNotFoundException("The specified flow ID does not exist in this bucket.");
        }
        if (!existingBucket.getId().equals(flowEntityWithCount.getBucketId())) {
            throw new IllegalStateException("The requested flow is not located in the given bucket");
        }
        // ensure the snapshot exists
        final FlowSnapshotEntity snapshotEntity = metadataService.getFlowSnapshot(flowIdentifier, version);
        if (snapshotEntity == null) {
            LOGGER.warn("The specified flow snapshot id [{}] does not exist for version [{}].", flowIdentifier, version);
            throw new ResourceNotFoundException("The specified versioned flow snapshot does not exist for this flow.");
        }
        // get the serialized bytes of the snapshot
        final byte[] serializedSnapshot = flowPersistenceProvider.getFlowContent(bucketIdentifier, flowIdentifier, version);
        if (serializedSnapshot == null || serializedSnapshot.length == 0) {
            throw new IllegalStateException("No serialized content found for snapshot with flow identifier " + flowIdentifier + " and version " + version);
        }
        // deserialize the contents
        final InputStream input = new ByteArrayInputStream(serializedSnapshot);
        final VersionedProcessGroup flowContents = processGroupSerializer.deserialize(input);
        // map entities to data model
        final Bucket bucket = DataModelMapper.map(existingBucket);
        final VersionedFlow versionedFlow = DataModelMapper.map(existingBucket, flowEntityWithCount);
        final VersionedFlowSnapshotMetadata snapshotMetadata = DataModelMapper.map(existingBucket, snapshotEntity);
        // create the snapshot to return
        final VersionedFlowSnapshot snapshot = new VersionedFlowSnapshot();
        snapshot.setFlowContents(flowContents);
        snapshot.setSnapshotMetadata(snapshotMetadata);
        snapshot.setFlow(versionedFlow);
        snapshot.setBucket(bucket);
        return snapshot;
    } finally {
        readLock.unlock();
    }
}

Example 32 with FlowEntity

use of org.apache.nifi.registry.db.entity.FlowEntity in project nifi-registry by apache.

the class RegistryService method getLatestFlowSnapshotMetadata.

public VersionedFlowSnapshotMetadata getLatestFlowSnapshotMetadata(final String bucketIdentifier, final String flowIdentifier) {
    if (StringUtils.isBlank(bucketIdentifier)) {
        throw new IllegalArgumentException("Bucket identifier cannot be null or blank");
    }
    if (StringUtils.isBlank(flowIdentifier)) {
        throw new IllegalArgumentException("Flow identifier cannot be null or blank");
    }
    readLock.lock();
    try {
        // ensure the bucket exists
        final BucketEntity existingBucket = metadataService.getBucketById(bucketIdentifier);
        if (existingBucket == null) {
            LOGGER.warn("The specified bucket id [{}] does not exist.", bucketIdentifier);
            throw new ResourceNotFoundException("The specified bucket ID does not exist in this registry.");
        }
        // ensure the flow exists
        final FlowEntity existingFlow = metadataService.getFlowById(flowIdentifier);
        if (existingFlow == null) {
            LOGGER.warn("The specified flow id [{}] does not exist.", flowIdentifier);
            throw new ResourceNotFoundException("The specified flow ID does not exist in this bucket.");
        }
        if (!existingBucket.getId().equals(existingFlow.getBucketId())) {
            throw new IllegalStateException("The requested flow is not located in the given bucket");
        }
        // get latest snapshot for the flow
        final FlowSnapshotEntity latestSnapshot = metadataService.getLatestSnapshot(existingFlow.getId());
        if (latestSnapshot == null) {
            throw new ResourceNotFoundException("The specified flow ID has no versions");
        }
        return DataModelMapper.map(existingBucket, latestSnapshot);
    } finally {
        readLock.unlock();
    }
}

Example 33 with FlowEntity

use of org.apache.nifi.registry.db.entity.FlowEntity in project nifi-registry by apache.

the class RegistryService method deleteFlowSnapshot.

public VersionedFlowSnapshotMetadata deleteFlowSnapshot(final String bucketIdentifier, final String flowIdentifier, final Integer version) {
    if (StringUtils.isBlank(bucketIdentifier)) {
        throw new IllegalArgumentException("Bucket identifier cannot be null or blank");
    }
    if (StringUtils.isBlank(flowIdentifier)) {
        throw new IllegalArgumentException("Flow identifier cannot be null or blank");
    }
    if (version == null) {
        throw new IllegalArgumentException("Version cannot be null or blank");
    }
    writeLock.lock();
    try {
        // ensure the bucket exists
        final BucketEntity existingBucket = metadataService.getBucketById(bucketIdentifier);
        if (existingBucket == null) {
            LOGGER.warn("The specified bucket id [{}] does not exist.", bucketIdentifier);
            throw new ResourceNotFoundException("The specified bucket ID does not exist in this registry.");
        }
        // ensure the flow exists
        final FlowEntity existingFlow = metadataService.getFlowById(flowIdentifier);
        if (existingFlow == null) {
            LOGGER.warn("The specified flow id [{}] does not exist.", flowIdentifier);
            throw new ResourceNotFoundException("The specified flow ID does not exist in this bucket.");
        }
        if (!existingBucket.getId().equals(existingFlow.getBucketId())) {
            throw new IllegalStateException("The requested flow is not located in the given bucket");
        }
        // ensure the snapshot exists
        final FlowSnapshotEntity snapshotEntity = metadataService.getFlowSnapshot(flowIdentifier, version);
        if (snapshotEntity == null) {
            throw new ResourceNotFoundException("Versioned flow snapshot does not exist for flow " + flowIdentifier + " and version " + version);
        }
        // delete the content of the snapshot
        flowPersistenceProvider.deleteFlowContent(bucketIdentifier, flowIdentifier, version);
        // delete the snapshot itself
        metadataService.deleteFlowSnapshot(snapshotEntity);
        return DataModelMapper.map(existingBucket, snapshotEntity);
    } finally {
        writeLock.unlock();
    }
}

Example 34 with FlowEntity

use of org.apache.nifi.registry.db.entity.FlowEntity in project nifi-registry by apache.

the class TestDatabaseMetadataService method testDeleteFlowWithSnapshots.

@Test
public void testDeleteFlowWithSnapshots() {
    final FlowEntity flow = metadataService.getFlowById("1");
    assertNotNull(flow);
    metadataService.deleteFlow(flow);
    final FlowEntity deletedFlow = metadataService.getFlowById("1");
    assertNull(deletedFlow);
}

Example 35 with FlowEntity

use of org.apache.nifi.registry.db.entity.FlowEntity in project nifi-registry by apache.

the class TestDatabaseMetadataService method testGetFlowByIdWhenDoesNotExist.

@Test
public void testGetFlowByIdWhenDoesNotExist() {
    final FlowEntity flow = metadataService.getFlowById("does-not-exist");
    assertNull(flow);
}