| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.flink.statefun.flink.core.jsonmodule; |
| |
| import static org.apache.flink.statefun.flink.core.spi.ExtensionResolverAccessor.getExtensionResolver; |
| |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Objects; |
| import java.util.stream.Collectors; |
| import java.util.stream.StreamSupport; |
| import org.apache.flink.shaded.jackson2.com.fasterxml.jackson.core.JsonPointer; |
| import org.apache.flink.shaded.jackson2.com.fasterxml.jackson.databind.JsonNode; |
| import org.apache.flink.shaded.jackson2.com.fasterxml.jackson.databind.ObjectMapper; |
| import org.apache.flink.shaded.jackson2.com.fasterxml.jackson.databind.node.ObjectNode; |
| import org.apache.flink.statefun.extensions.ComponentBinder; |
| import org.apache.flink.statefun.extensions.ComponentJsonObject; |
| import org.apache.flink.statefun.flink.common.json.Selectors; |
| import org.apache.flink.statefun.flink.core.spi.ExtensionResolver; |
| import org.apache.flink.statefun.sdk.TypeName; |
| import org.apache.flink.statefun.sdk.spi.StatefulFunctionModule; |
| |
| @Deprecated |
| public final class LegacyRemoteModuleV30 implements StatefulFunctionModule { |
| |
| private final JsonNode moduleSpecNode; |
| |
| // ===================================================================== |
| // Json pointers for backwards compatibility |
| // ===================================================================== |
| |
| private static final JsonPointer ENDPOINTS = JsonPointer.compile("/endpoints"); |
| private static final JsonPointer INGRESSES = JsonPointer.compile("/ingresses"); |
| private static final JsonPointer EGRESSES = JsonPointer.compile("/egresses"); |
| |
| private static final JsonPointer ENDPOINT_KIND = JsonPointer.compile("/endpoint/meta/kind"); |
| private static final JsonPointer ENDPOINT_SPEC = JsonPointer.compile("/endpoint/spec"); |
| private static final JsonPointer INGRESS_KIND = JsonPointer.compile("/ingress/meta/type"); |
| private static final JsonPointer INGRESS_ID = JsonPointer.compile("/ingress/meta/id"); |
| private static final JsonPointer INGRESS_SPEC = JsonPointer.compile("/ingress/spec"); |
| private static final JsonPointer EGRESS_KIND = JsonPointer.compile("/egress/meta/type"); |
| private static final JsonPointer EGRESS_ID = JsonPointer.compile("/egress/meta/id"); |
| private static final JsonPointer EGRESS_SPEC = JsonPointer.compile("/egress/spec"); |
| |
| private static final Map<String, TypeName> LEGACY_KIND_CONVERSIONS = new HashMap<>(); |
| |
| static { |
| LEGACY_KIND_CONVERSIONS.put("http", TypeName.parseFrom("io.statefun.endpoints.v1/http")); |
| LEGACY_KIND_CONVERSIONS.put( |
| "io.statefun.kafka/ingress", TypeName.parseFrom("io.statefun.kafka.v1/ingress")); |
| LEGACY_KIND_CONVERSIONS.put( |
| "io.statefun.kafka/egress", TypeName.parseFrom("io.statefun.kafka.v1/egress")); |
| LEGACY_KIND_CONVERSIONS.put( |
| "io.statefun.kinesis/ingress", TypeName.parseFrom("io.statefun.kinesis.v1/ingress")); |
| LEGACY_KIND_CONVERSIONS.put( |
| "io.statefun.kinesis/egress", TypeName.parseFrom("io.statefun.kinesis.v1/egress")); |
| } |
| |
| LegacyRemoteModuleV30(JsonNode moduleSpecNode) { |
| this.moduleSpecNode = Objects.requireNonNull(moduleSpecNode); |
| } |
| |
| @Override |
| public void configure(Map<String, String> globalConfiguration, Binder moduleBinder) { |
| components(moduleSpecNode).forEach(component -> bindComponent(component, moduleBinder)); |
| } |
| |
| private static Iterable<ComponentJsonObject> components(JsonNode moduleRootNode) { |
| final List<ComponentJsonObject> components = new ArrayList<>(); |
| components.addAll(endpointComponents(moduleRootNode)); |
| components.addAll(ingressComponents(moduleRootNode)); |
| components.addAll(egressComponents(moduleRootNode)); |
| return components; |
| } |
| |
| private static List<ComponentJsonObject> endpointComponents(JsonNode moduleRootNode) { |
| final Iterable<? extends JsonNode> endpointComponentNodes = |
| Selectors.listAt(moduleRootNode, ENDPOINTS); |
| return StreamSupport.stream(endpointComponentNodes.spliterator(), false) |
| .map(LegacyRemoteModuleV30::parseEndpointComponentNode) |
| .collect(Collectors.toList()); |
| } |
| |
| private static List<ComponentJsonObject> ingressComponents(JsonNode moduleRootNode) { |
| final Iterable<? extends JsonNode> ingressComponentNodes = |
| Selectors.listAt(moduleRootNode, INGRESSES); |
| return StreamSupport.stream(ingressComponentNodes.spliterator(), false) |
| .map(LegacyRemoteModuleV30::parseIngressComponentNode) |
| .collect(Collectors.toList()); |
| } |
| |
| private static List<ComponentJsonObject> egressComponents(JsonNode moduleRootNode) { |
| final Iterable<? extends JsonNode> egressComponentNodes = |
| Selectors.listAt(moduleRootNode, EGRESSES); |
| return StreamSupport.stream(egressComponentNodes.spliterator(), false) |
| .map(LegacyRemoteModuleV30::parseEgressComponentNode) |
| .collect(Collectors.toList()); |
| } |
| |
| private static ComponentJsonObject parseEndpointComponentNode(JsonNode node) { |
| final TypeName binderKind = |
| tryConvertLegacyBinderKindTypeName(Selectors.textAt(node, ENDPOINT_KIND)); |
| |
| // backwards compatibility path |
| return reconstructComponentJsonObject(binderKind, node.at(ENDPOINT_SPEC)); |
| } |
| |
| private static ComponentJsonObject parseIngressComponentNode(JsonNode node) { |
| final TypeName binderKind = |
| tryConvertLegacyBinderKindTypeName(Selectors.textAt(node, INGRESS_KIND)); |
| |
| // backwards compatibility path |
| final JsonNode specNode = node.at(INGRESS_SPEC); |
| final String idString = Selectors.textAt(node, INGRESS_ID); |
| ((ObjectNode) specNode).put("id", idString); |
| |
| return reconstructComponentJsonObject(binderKind, specNode); |
| } |
| |
| private static ComponentJsonObject parseEgressComponentNode(JsonNode node) { |
| final TypeName binderKind = |
| tryConvertLegacyBinderKindTypeName(Selectors.textAt(node, EGRESS_KIND)); |
| |
| // backwards compatibility path |
| final JsonNode specNode = node.at(EGRESS_SPEC); |
| final String idString = Selectors.textAt(node, EGRESS_ID); |
| ((ObjectNode) specNode).put("id", idString); |
| |
| return reconstructComponentJsonObject(binderKind, specNode); |
| } |
| |
| private static TypeName tryConvertLegacyBinderKindTypeName(String binderKindString) { |
| final TypeName binderKind = LEGACY_KIND_CONVERSIONS.get(binderKindString); |
| if (binderKind != null) { |
| return binderKind; |
| } |
| // if it isn't one of the recognized legacy kinds, it could be something custom added by the |
| // user |
| return TypeName.parseFrom(binderKindString); |
| } |
| |
| private static ComponentJsonObject reconstructComponentJsonObject( |
| TypeName binderTypename, JsonNode specJsonNode) { |
| final ObjectNode reconstructedNode = new ObjectMapper().createObjectNode(); |
| reconstructedNode.put( |
| ComponentJsonObject.BINDER_KIND_FIELD, binderTypename.canonicalTypenameString()); |
| reconstructedNode.set(ComponentJsonObject.SPEC_FIELD, specJsonNode); |
| return new ComponentJsonObject(reconstructedNode); |
| } |
| |
| private static void bindComponent(ComponentJsonObject component, Binder moduleBinder) { |
| final ExtensionResolver extensionResolver = getExtensionResolver(moduleBinder); |
| final ComponentBinder componentBinder = |
| extensionResolver.resolveExtension(component.binderTypename(), ComponentBinder.class); |
| componentBinder.bind(component, moduleBinder); |
| } |
| } |