diff options
Diffstat (limited to 'infra/translate-api/src/main/java/io/fd/honeycomb/translate/read/registry/ReaderRegistry.java')
-rw-r--r-- | infra/translate-api/src/main/java/io/fd/honeycomb/translate/read/registry/ReaderRegistry.java | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/infra/translate-api/src/main/java/io/fd/honeycomb/translate/read/registry/ReaderRegistry.java b/infra/translate-api/src/main/java/io/fd/honeycomb/translate/read/registry/ReaderRegistry.java new file mode 100644 index 000000000..9a1c99508 --- /dev/null +++ b/infra/translate-api/src/main/java/io/fd/honeycomb/translate/read/registry/ReaderRegistry.java @@ -0,0 +1,62 @@ +/* + * Copyright (c) 2016 Cisco and/or its affiliates. + * + * 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 io.fd.honeycomb.translate.read.registry; + +import com.google.common.annotations.Beta; +import com.google.common.base.Optional; +import com.google.common.collect.Multimap; +import io.fd.honeycomb.translate.read.ReadContext; +import io.fd.honeycomb.translate.read.ReadFailedException; +import javax.annotation.Nonnull; +import org.opendaylight.yangtools.yang.binding.DataObject; +import org.opendaylight.yangtools.yang.binding.InstanceIdentifier; + +/** + * Simple delegating reader suitable as a holder for all other root readers, providing readAll feature. + */ +@Beta +public interface ReaderRegistry { + + /** + * Performs read on all registered root readers and merges the results into a Multimap. Keys represent identifiers + * for root DataObjects from the data tree modeled by YANG. + * + * @param ctx Read context + * + * @return multimap that preserves deterministic iteration order across non-distinct key values + * @throws ReadFailedException if read was unsuccessful + */ + @Nonnull + Multimap<InstanceIdentifier<? extends DataObject>, ? extends DataObject> readAll(@Nonnull final ReadContext ctx) + throws ReadFailedException; + + /** + * Reads data identified by id. + * + * @param id unique identifier of subtree to be read. The subtree must contain managed data object type. For + * identifiers pointing below node managed by this reader, it's reader's responsibility to filter out the + * right node or to delegate the read to a child reader. + * @param ctx Read context + * + * @return List of DataObjects identified by id. If the ID points to a single node, it will be wrapped in a list + * @throws ReadFailedException if read was unsuccessful + */ + @Nonnull + Optional<? extends DataObject> read(@Nonnull InstanceIdentifier<? extends DataObject> id, + @Nonnull ReadContext ctx) + throws ReadFailedException; +} |