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…e mapping Added CloudEventAttributesProvider and default implementation Added CloudEventMessageUtils
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84
...ext/src/main/java/org/springframework/cloud/function/cloudevent/CloudEventAttributes.java
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| /* | ||
| * Copyright 2019-2019 the original author or 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 | ||
| * | ||
| * https://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. | ||
| */ | ||
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| package org.springframework.cloud.function.cloudevent; | ||
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| import java.util.HashMap; | ||
| import java.util.Map; | ||
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| /** | ||
| * | ||
| * @author Oleg Zhurakousky | ||
| * @since 3.1 | ||
| */ | ||
| public class CloudEventAttributes extends HashMap<String, Object> { | ||
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| /** | ||
| * | ||
| */ | ||
| private static final long serialVersionUID = 5393610770855366497L; | ||
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| CloudEventAttributes(Map<String, Object> headers) { | ||
| super(headers); | ||
| } | ||
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| @SuppressWarnings("unchecked") | ||
| public <A> A getId() { | ||
| return this.containsKey(CloudEventMessageUtils.CE_ID) | ||
| ? (A) this.get(CloudEventMessageUtils.CE_ID) | ||
| : (A) this.get(CloudEventMessageUtils.ID); | ||
| } | ||
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| @SuppressWarnings("unchecked") | ||
| public <A> A getSource() { | ||
| return this.containsKey(CloudEventMessageUtils.CE_SOURCE) | ||
| ? (A) this.get(CloudEventMessageUtils.CE_SOURCE) | ||
| : (A) this.get(CloudEventMessageUtils.SOURCE); | ||
| } | ||
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| @SuppressWarnings("unchecked") | ||
| public <A> A getSpecversion() { | ||
| return this.containsKey(CloudEventMessageUtils.CE_SPECVERSION) | ||
| ? (A) this.get(CloudEventMessageUtils.CE_SPECVERSION) | ||
| : (A) this.get(CloudEventMessageUtils.SPECVERSION); | ||
| } | ||
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| @SuppressWarnings("unchecked") | ||
| public <A> A getType() { | ||
| return this.containsKey(CloudEventMessageUtils.CE_TYPE) | ||
| ? (A) this.get(CloudEventMessageUtils.CE_TYPE) | ||
| : (A) this.get(CloudEventMessageUtils.TYPE); | ||
| } | ||
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| @SuppressWarnings("unchecked") | ||
| public <A> A getDataContentType() { | ||
| return this.containsKey(CloudEventMessageUtils.CE_DATACONTENTTYPE) | ||
| ? (A) this.get(CloudEventMessageUtils.CE_DATACONTENTTYPE) | ||
| : (A) this.get(CloudEventMessageUtils.DATACONTENTTYPE); | ||
| } | ||
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| public void setDataContentType(String datacontenttype) { | ||
| this.put(CloudEventMessageUtils.CE_DATACONTENTTYPE, datacontenttype); | ||
| } | ||
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| @SuppressWarnings("unchecked") | ||
| public <A> A getAtttribute(String name) { | ||
| return (A) this.get(name); | ||
| } | ||
| } |
60 changes: 60 additions & 0 deletions
60
...ain/java/org/springframework/cloud/function/cloudevent/CloudEventAtttributesProvider.java
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| @@ -0,0 +1,60 @@ | ||
| /* | ||
| * Copyright 2020-2020 the original author or 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 | ||
| * | ||
| * https://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. | ||
| */ | ||
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| package org.springframework.cloud.function.cloudevent; | ||
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| import org.springframework.messaging.MessageHeaders; | ||
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| /** | ||
| * | ||
| * @author Oleg Zhurakousky | ||
| * @since 3.1 | ||
| */ | ||
| public interface CloudEventAtttributesProvider { | ||
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| /** | ||
| * Will construct instance of {@link CloudEventAttributes} setting its required attributes. | ||
| * | ||
| * @param ce_id value for Cloud Event 'id' attribute | ||
| * @param ce_specversion value for Cloud Event 'specversion' attribute | ||
| * @param ce_source value for Cloud Event 'source' attribute | ||
| * @param ce_type value for Cloud Event 'type' attribute | ||
| * @return instance of {@link CloudEventAttributes} | ||
| */ | ||
| CloudEventAttributes get(String ce_id, String ce_specversion, String ce_source, String ce_type); | ||
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| /** | ||
| * Will construct instance of {@link CloudEventAttributes} | ||
| * Should default/generate cloud event ID and SPECVERSION. | ||
| * | ||
| * @param ce_source value for Cloud Event 'source' attribute | ||
| * @param ce_type value for Cloud Event 'type' attribute | ||
| * @return instance of {@link CloudEventAttributes} | ||
| */ | ||
| CloudEventAttributes get(String ce_source, String ce_type); | ||
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| /** | ||
| * Will construct instance of {@link CloudEventAttributes} from {@link MessageHeaders}. | ||
| * | ||
| * Should copy Cloud Event related headers into an instance of {@link CloudEventAttributes} | ||
| * NOTE: Certain headers must not be copied. | ||
| * | ||
| * @param headers instance of {@link MessageHeaders} | ||
| * @return modifiable instance of {@link CloudEventAttributes} | ||
| */ | ||
| RequiredAttributeAccessor get(MessageHeaders headers); | ||
| } |
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64 changes: 64 additions & 0 deletions
64
...va/org/springframework/cloud/function/cloudevent/DefaultCloudEventAttributesProvider.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,64 @@ | ||
| /* | ||
| * Copyright 2019-2019 the original author or 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 | ||
| * | ||
| * https://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. | ||
| */ | ||
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| package org.springframework.cloud.function.cloudevent; | ||
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| import java.util.HashMap; | ||
| import java.util.Map; | ||
| import java.util.UUID; | ||
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| import org.springframework.messaging.MessageHeaders; | ||
| import org.springframework.util.Assert; | ||
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| /** | ||
| * | ||
| * @author Oleg Zhurakousky | ||
| * @since 3.1 | ||
| * | ||
| */ | ||
| public class DefaultCloudEventAttributesProvider implements CloudEventAtttributesProvider { | ||
| /* | ||
| * should i provide instance() method for convinience or should it be always injected into function | ||
| */ | ||
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| @Override | ||
| public CloudEventAttributes get(String ce_id, String ce_specversion, String ce_source, String ce_type) { | ||
| Assert.hasText(ce_id, "'ce_id' must not be null or empty"); | ||
| Assert.hasText(ce_specversion, "'ce_specversion' must not be null or empty"); | ||
| Assert.hasText(ce_source, "'ce_source' must not be null or empty"); | ||
| Assert.hasText(ce_type, "'ce_type' must not be null or empty"); | ||
| Map<String, Object> requiredAttributes = new HashMap<>(); | ||
| requiredAttributes.put(CloudEventMessageUtils.CE_ID, ce_id); | ||
| requiredAttributes.put(CloudEventMessageUtils.CE_SPECVERSION, ce_specversion); | ||
| requiredAttributes.put(CloudEventMessageUtils.CE_SOURCE, ce_source); | ||
| requiredAttributes.put(CloudEventMessageUtils.CE_TYPE, ce_type); | ||
| return new CloudEventAttributes(requiredAttributes); | ||
| } | ||
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| @Override | ||
| public CloudEventAttributes get(String ce_source, String ce_type) { | ||
| return this.get(UUID.randomUUID().toString(), "1.0", ce_source, ce_type); | ||
| } | ||
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| /** | ||
| * By default it will copy all the headers while exposing accessor to allow user to modify any of them. | ||
| */ | ||
| @Override | ||
| public RequiredAttributeAccessor get(MessageHeaders headers) { | ||
| return new RequiredAttributeAccessor(headers); | ||
| } | ||
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| } |
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