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/*
* 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.client.domain;
import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.JsonDeserializer;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializerProvider;
import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
import com.fasterxml.jackson.databind.annotation.JsonSerialize;
import java.io.IOException;
import java.time.OffsetDateTime;
import java.time.format.DateTimeFormatter;
import java.util.Arrays;
import java.util.Objects;
/**
* A cloud event in Dapr.
* @param The type of the payload.
*/
public class CloudEvent {
/**
* Mime type used for CloudEvent.
*/
public static final String CONTENT_TYPE = "application/cloudevents+json";
/**
* Shared Json serializer/deserializer as per Jackson's documentation.
*/
protected static final ObjectMapper OBJECT_MAPPER = new ObjectMapper()
.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false)
.setSerializationInclusion(JsonInclude.Include.NON_NULL);
/**
* Identifier of the message being processed.
*/
private String id;
/**
* Event's source.
*/
private String source;
/**
* Envelope type.
*/
private String type;
/**
* Version of the specification.
*/
private String specversion;
/**
* Type of the data's content.
*/
private String datacontenttype;
/**
* Cloud event specs says data can be a JSON object or string.
*/
private T data;
/**
* Cloud event specs says binary data should be in data_base64.
*/
@JsonProperty("data_base64")
private byte[] binaryData;
/**
* The pubsub component this CloudEvent came from.
*/
@JsonProperty("pubsubname")
private String pubsubName;
/**
* The topic this CloudEvent came from.
*/
private String topic;
/**
* The time this CloudEvent was created.
*/
@JsonSerialize(using = OffsetDateTimeSerializer.class)
@JsonDeserialize(using = OffsetDateTimeDeserializer.class)
private OffsetDateTime time;
/**
* The trace id is the legacy name for trace parent.
*/
@Deprecated
@JsonProperty("traceid")
private String traceId;
/**
* The trace parent.
*/
@JsonProperty("traceparent")
private String traceParent;
/**
* The trace state.
*/
@JsonProperty("tracestate")
private String traceState;
/**
* Instantiates a CloudEvent.
*/
public CloudEvent() {
}
/**
* Instantiates a CloudEvent.
* @param id Identifier of the message being processed.
* @param source Source for this event.
* @param type Type of event.
* @param specversion Version of the event spec.
* @param datacontenttype Type of the payload.
* @param data Payload.
*/
public CloudEvent(
String id,
String source,
String type,
String specversion,
String datacontenttype,
T data) {
this.id = id;
this.source = source;
this.type = type;
this.specversion = specversion;
this.datacontenttype = datacontenttype;
this.data = data;
}
/**
* Instantiates a CloudEvent.
* @param id Identifier of the message being processed.
* @param source Source for this event.
* @param type Type of event.
* @param specversion Version of the event spec.
* @param binaryData Payload.
*/
public CloudEvent(
String id,
String source,
String type,
String specversion,
byte[] binaryData) {
this.id = id;
this.source = source;
this.type = type;
this.specversion = specversion;
this.datacontenttype = "application/octet-stream";
this.binaryData = binaryData == null ? null : Arrays.copyOf(binaryData, binaryData.length);
}
/**
* Deserialize a message topic from Dapr.
*
* @param payload Payload sent from Dapr.
* @return Message (can be null if input is null)
* @throws IOException If cannot parse.
*/
public static CloudEvent deserialize(byte[] payload) throws IOException {
if (payload == null) {
return null;
}
return OBJECT_MAPPER.readValue(payload, CloudEvent.class);
}
/**
* Gets the identifier of the message being processed.
* @return Identifier of the message being processed.
*/
public String getId() {
return id;
}
/**
* Sets the identifier of the message being processed.
* @param id Identifier of the message being processed.
*/
public void setId(String id) {
this.id = id;
}
/**
* Gets the event's source.
* @return Event's source.
*/
public String getSource() {
return source;
}
/**
* Sets the event's source.
* @param source Event's source.
*/
public void setSource(String source) {
this.source = source;
}
/**
* Gets the envelope type.
* @return Envelope type.
*/
public String getType() {
return type;
}
/**
* Sets the envelope type.
* @param type Envelope type.
*/
public void setType(String type) {
this.type = type;
}
/**
* Gets the version of the specification.
* @return Version of the specification.
*/
public String getSpecversion() {
return specversion;
}
/**
* Sets the version of the specification.
* @param specversion Version of the specification.
*/
public void setSpecversion(String specversion) {
this.specversion = specversion;
}
/**
* Gets the type of the data's content.
* @return Type of the data's content.
*/
public String getDatacontenttype() {
return datacontenttype;
}
/**
* Sets the type of the data's content.
* @param datacontenttype Type of the data's content.
*/
public void setDatacontenttype(String datacontenttype) {
this.datacontenttype = datacontenttype;
}
/**
* Gets the cloud event data.
* @return Cloud event's data. As per specs, data can be a JSON object or string.
*/
public T getData() {
return data;
}
/**
* Sets the cloud event data. As per specs, data can be a JSON object or string.
* @param data Cloud event's data. As per specs, data can be a JSON object or string.
*/
public void setData(T data) {
this.data = data;
}
/**
* Gets the cloud event's binary data.
* @return Cloud event's binary data.
*/
public byte[] getBinaryData() {
return this.binaryData == null ? null : Arrays.copyOf(this.binaryData, this.binaryData.length);
}
/**
* Sets the cloud event's binary data.
* @param binaryData Cloud event's binary data.
*/
public void setBinaryData(byte[] binaryData) {
this.binaryData = binaryData == null ? null : Arrays.copyOf(binaryData, binaryData.length);
}
/**
* Gets the pubsub component name.
* @return the pubsub component name.
*/
public String getPubsubName() {
return pubsubName;
}
/**
* Sets the pubsub component name.
* @param pubsubName the pubsub component name.
*/
public void setPubsubName(String pubsubName) {
this.pubsubName = pubsubName;
}
/**
* Gets the topic name.
* @return the topic name.
*/
public String getTopic() {
return topic;
}
/**
* Sets the topic name.
* @param topic the topic name.
*/
public void setTopic(String topic) {
this.topic = topic;
}
/**
* Gets the time.
* @return the time.
*/
public OffsetDateTime getTime() {
return time;
}
/**
* Sets the time.
* @param time the time.
*/
public void setTime(OffsetDateTime time) {
this.time = time;
}
/**
* Gets the trace id which is the legacy name for trace parent.
* @return the trace id.
*/
@Deprecated
public String getTraceId() {
return traceId;
}
/**
* Sets the trace id which is the legacy name for trace parent.
* @param traceId the trace id.
*/
@Deprecated
public void setTraceId(String traceId) {
this.traceId = traceId;
}
/**
* Gets the trace parent.
* @return the trace parent.
*/
public String getTraceParent() {
return traceParent;
}
/**
* Sets the trace parent.
* @param traceParent the trace parent.
*/
public void setTraceParent(String traceParent) {
this.traceParent = traceParent;
}
/**
* Gets the trace state.
* @return the trace state.
*/
public String getTraceState() {
return traceState;
}
/**
* Sets the trace state.
* @param traceState the trace state.
*/
public void setTraceState(String traceState) {
this.traceState = traceState;
}
/**
* {@inheritDoc}
*/
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
CloudEvent that = (CloudEvent) o;
return Objects.equals(id, that.id)
&& Objects.equals(source, that.source)
&& Objects.equals(type, that.type)
&& Objects.equals(specversion, that.specversion)
&& Objects.equals(datacontenttype, that.datacontenttype)
&& Objects.equals(data, that.data)
&& Arrays.equals(binaryData, that.binaryData)
&& Objects.equals(pubsubName, that.pubsubName)
&& Objects.equals(topic, that.topic)
&& ((time == null && that.time == null) || (time != null && that.time != null && time.isEqual(that.time)))
&& Objects.equals(traceId, that.traceId)
&& Objects.equals(traceParent, that.traceParent)
&& Objects.equals(traceState, that.traceState);
}
/**
* {@inheritDoc}
*/
@Override
public int hashCode() {
return Objects.hash(id, source, type, specversion, datacontenttype, data, binaryData, pubsubName, topic, time,
traceId, traceParent, traceState);
}
private static class OffsetDateTimeSerializer extends JsonSerializer {
@Override
public void serialize(OffsetDateTime offsetDateTime, JsonGenerator jsonGenerator,
SerializerProvider serializerProvider) throws IOException {
jsonGenerator.writeString(offsetDateTime.format(DateTimeFormatter.ISO_OFFSET_DATE_TIME));
}
}
private static class OffsetDateTimeDeserializer extends JsonDeserializer {
@Override
public OffsetDateTime deserialize(JsonParser jsonParser, DeserializationContext deserializationContext)
throws IOException {
return OffsetDateTime.parse(jsonParser.getText());
}
}
}
