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feat: dataspace protocol negotiation dispatcher (eclipse-edc#2780)
--------- Co-authored-by: Ronja Quensel <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,64 @@ | ||
| /* | ||
| * Copyright (c) 2023 Fraunhofer Institute for Software and Systems Engineering | ||
| * | ||
| * This program and the accompanying materials are made available under the | ||
| * terms of the Apache License, Version 2.0 which is available at | ||
| * https://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| * | ||
| * Contributors: | ||
| * Fraunhofer Institute for Software and Systems Engineering - initial API and implementation | ||
| * | ||
| */ | ||
|
|
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| package org.eclipse.edc.protocol.dsp.serialization; | ||
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|
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| import com.fasterxml.jackson.core.JsonProcessingException; | ||
| import com.fasterxml.jackson.databind.ObjectMapper; | ||
| import jakarta.json.JsonObject; | ||
| import org.eclipse.edc.jsonld.spi.transformer.JsonLdTransformerRegistry; | ||
| import org.eclipse.edc.protocol.dsp.spi.serialization.JsonLdRemoteMessageSerializer; | ||
| import org.eclipse.edc.spi.EdcException; | ||
| import org.eclipse.edc.spi.types.domain.message.RemoteMessage; | ||
|
|
||
| import static java.lang.String.format; | ||
| import static java.lang.String.join; | ||
| import static org.eclipse.edc.jsonld.util.JsonLdUtil.compact; | ||
|
|
||
| /** | ||
| * Serializes {@link RemoteMessage}s to JSON-LD. | ||
| */ | ||
| public class JsonLdRemoteMessageSerializerImpl implements JsonLdRemoteMessageSerializer { | ||
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| private JsonLdTransformerRegistry registry; | ||
| private ObjectMapper mapper; | ||
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| public JsonLdRemoteMessageSerializerImpl(JsonLdTransformerRegistry registry, ObjectMapper mapper) { | ||
| this.registry = registry; | ||
| this.mapper = mapper; | ||
| } | ||
|
|
||
| /** | ||
| * Serializes a {@link RemoteMessage} to JSON-LD. The message is first transformed using the | ||
| * {@link JsonLdTransformerRegistry}, then the resulting JSON-LD structure is compacted using | ||
| * the given JSON-LD context before returning it as a string. | ||
| * | ||
| * @param message the message to serialize | ||
| * @param jsonLdContext the JSON-LD context | ||
| * @return the serialized message | ||
| */ | ||
| @Override | ||
| public String serialize(RemoteMessage message, JsonObject jsonLdContext) { | ||
| try { | ||
| var transformResult = registry.transform(message, JsonObject.class); | ||
| if (transformResult.succeeded()) { | ||
| var compacted = compact(transformResult.getContent(), jsonLdContext); | ||
| return mapper.writeValueAsString(compacted); | ||
| } | ||
| throw new EdcException(format("Failed to transform %s: %s", message.getClass().getSimpleName(), join(", ", transformResult.getFailureMessages()))); | ||
| } catch (JsonProcessingException e) { | ||
| throw new EdcException(format("Failed to serialize %s", message.getClass().getSimpleName()), e); | ||
| } | ||
| } | ||
| } |
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