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io.dapr.actors.runtime.ActorObjectSerializer Maven / Gradle / Ivy
/*
* Copyright 2021 The Dapr Authors
* 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.dapr.actors.runtime;
import com.fasterxml.jackson.core.JsonFactory;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.databind.JsonNode;
import io.dapr.client.ObjectSerializer;
import io.dapr.utils.DurationUtils;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.time.Duration;
/**
* Serializes and deserializes internal objects.
*/
public class ActorObjectSerializer extends ObjectSerializer {
/**
* Shared Json Factory as per Jackson's documentation.
*/
private static final JsonFactory JSON_FACTORY = new JsonFactory();
/**
* {@inheritDoc}
*/
@Override
public byte[] serialize(Object state) throws IOException {
if (state == null) {
return null;
}
if (state.getClass() == ActorTimerParams.class) {
// Special serializer for this internal classes.
return serialize((ActorTimerParams) state);
}
if (state.getClass() == ActorReminderParams.class) {
// Special serializer for this internal classes.
return serialize((ActorReminderParams) state);
}
if (state.getClass() == ActorRuntimeConfig.class) {
// Special serializer for this internal classes.
return serialize((ActorRuntimeConfig) state);
}
// Is not an special case.
return super.serialize(state);
}
/**
* Faster serialization for params of Actor's timer.
*
* @param timer Timer's to be serialized.
* @return JSON String.
* @throws IOException If cannot generate JSON.
*/
private byte[] serialize(ActorTimerParams timer) throws IOException {
if (timer == null) {
return null;
}
try (ByteArrayOutputStream writer = new ByteArrayOutputStream()) {
JsonGenerator generator = JSON_FACTORY.createGenerator(writer);
generator.writeStartObject();
generator.writeStringField("dueTime", DurationUtils.convertDurationToDaprFormat(timer.getDueTime()));
generator.writeStringField("period", DurationUtils.convertDurationToDaprFormat(timer.getPeriod()));
generator.writeStringField("callback", timer.getCallback());
if (timer.getData() != null) {
generator.writeBinaryField("data", timer.getData());
}
generator.writeEndObject();
generator.close();
writer.flush();
return writer.toByteArray();
}
}
/**
* Faster serialization for Actor's reminder.
*
* @param reminder Reminder to be serialized.
* @return JSON String.
* @throws IOException If cannot generate JSON.
*/
private byte[] serialize(ActorReminderParams reminder) throws IOException {
try (ByteArrayOutputStream writer = new ByteArrayOutputStream()) {
JsonGenerator generator = JSON_FACTORY.createGenerator(writer);
generator.writeStartObject();
generator.writeStringField("dueTime", DurationUtils.convertDurationToDaprFormat(reminder.getDueTime()));
generator.writeStringField("period", DurationUtils.convertDurationToDaprFormat(reminder.getPeriod()));
if (reminder.getData() != null) {
generator.writeBinaryField("data", reminder.getData());
}
generator.writeEndObject();
generator.close();
writer.flush();
return writer.toByteArray();
}
}
/**
* Faster serialization for Actor's runtime configuration.
*
* @param config Configuration for Dapr's actor runtime.
* @return JSON String.
* @throws IOException If cannot generate JSON.
*/
private byte[] serialize(ActorRuntimeConfig config) throws IOException {
try (ByteArrayOutputStream writer = new ByteArrayOutputStream()) {
JsonGenerator generator = JSON_FACTORY.createGenerator(writer);
generator.writeStartObject();
generator.writeArrayFieldStart("entities");
for (String actorClass : config.getRegisteredActorTypes()) {
generator.writeString(actorClass);
}
generator.writeEndArray();
if (config.getActorIdleTimeout() != null) {
generator.writeStringField("actorIdleTimeout",
DurationUtils.convertDurationToDaprFormat(config.getActorIdleTimeout()));
}
if (config.getActorScanInterval() != null) {
generator.writeStringField("actorScanInterval",
DurationUtils.convertDurationToDaprFormat(config.getActorScanInterval()));
}
if (config.getDrainOngoingCallTimeout() != null) {
generator.writeStringField("drainOngoingCallTimeout",
DurationUtils.convertDurationToDaprFormat(config.getDrainOngoingCallTimeout()));
}
if (config.getDrainBalancedActors() != null) {
generator.writeBooleanField("drainBalancedActors", config.getDrainBalancedActors());
}
if (config.getRemindersStoragePartitions() != null) {
generator.writeNumberField("remindersStoragePartitions", config.getRemindersStoragePartitions());
}
if (!config.getActorTypeConfigs().isEmpty()) {
generator.writeArrayFieldStart("entitiesConfig");
for (ActorTypeConfig actorTypeConfig : config.getActorTypeConfigs()) {
generator.writeStartObject();
if (actorTypeConfig.getActorTypeName() != null) {
generator.writeArrayFieldStart("entities");
generator.writeString(actorTypeConfig.getActorTypeName());
generator.writeEndArray();
}
if (actorTypeConfig.getActorIdleTimeout() != null) {
generator.writeStringField("actorIdleTimeout",
DurationUtils.convertDurationToDaprFormat(actorTypeConfig.getActorIdleTimeout()));
}
if (actorTypeConfig.getActorScanInterval() != null) {
generator.writeStringField("actorScanInterval",
DurationUtils.convertDurationToDaprFormat(actorTypeConfig.getActorScanInterval()));
}
if (actorTypeConfig.getDrainOngoingCallTimeout() != null) {
generator.writeStringField("drainOngoingCallTimeout",
DurationUtils.convertDurationToDaprFormat(actorTypeConfig.getDrainOngoingCallTimeout()));
}
if (actorTypeConfig.getDrainBalancedActors() != null) {
generator.writeBooleanField("drainBalancedActors", actorTypeConfig.getDrainBalancedActors());
}
if (actorTypeConfig.getRemindersStoragePartitions() != null) {
generator.writeNumberField("remindersStoragePartitions", actorTypeConfig.getRemindersStoragePartitions());
}
generator.writeEndObject();
}
generator.writeEndArray();
}
generator.writeEndObject();
generator.close();
writer.flush();
return writer.toByteArray();
}
}
/**
* {@inheritDoc}
*/
@Override
public T deserialize(byte[] content, Class clazz) throws IOException {
if (clazz == ActorTimerParams.class) {
// Special serializer for this internal classes.
return (T) deserializeActorTimer(content);
}
if (clazz == ActorReminderParams.class) {
// Special serializer for this internal classes.
return (T) deserializeActorReminder(content);
}
// Is not one of the special cases.
return super.deserialize(content, clazz);
}
/**
* Deserializes an Actor Timer.
*
* @param value Content to be deserialized.
* @return Actor Timer.
* @throws IOException If cannot parse JSON.
*/
private ActorTimerParams deserializeActorTimer(byte[] value) throws IOException {
if (value == null) {
return null;
}
JsonNode node = OBJECT_MAPPER.readTree(value);
String callback = node.get("callback").asText();
Duration dueTime = extractDurationOrNull(node, "dueTime");
Duration period = extractDurationOrNull(node, "period");
byte[] data = node.get("data") != null ? node.get("data").binaryValue() : null;
return new ActorTimerParams(callback, data, dueTime, period);
}
/**
* Deserializes an Actor Reminder.
*
* @param value Content to be deserialized.
* @return Actor Reminder.
* @throws IOException If cannot parse JSON.
*/
private ActorReminderParams deserializeActorReminder(byte[] value) throws IOException {
if (value == null) {
return null;
}
JsonNode node = OBJECT_MAPPER.readTree(value);
Duration dueTime = extractDurationOrNull(node, "dueTime");
Duration period = extractDurationOrNull(node, "period");
byte[] data = node.get("data") != null ? node.get("data").binaryValue() : null;
return new ActorReminderParams(data, dueTime, period);
}
/**
* Extracts duration or null.
*
* @param node Node that contains the attribute.
* @param name Attribute name.
* @return Parsed duration or null.
*/
private static Duration extractDurationOrNull(JsonNode node, String name) {
JsonNode valueNode = node.get(name);
if (valueNode == null) {
return null;
}
return DurationUtils.convertDurationFromDaprFormat(valueNode.asText());
}
}
