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Bug 568632 Implement feature grant acquire/release
Extract typed EObject from bytes reading for reuse Signed-off-by: eparovyshnaya <[email protected]>
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70 changes: 70 additions & 0 deletions
70
....passage.lic.hc/src/org/eclipse/passage/lic/internal/hc/remote/impl/EObjectFromBytes.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,70 @@ | ||
| /******************************************************************************* | ||
| * Copyright (c) 2020 ArSysOp | ||
| * | ||
| * This program and the accompanying materials are made available under the | ||
| * terms of the Eclipse Public License 2.0 which is available at | ||
| * https://www.eclipse.org/legal/epl-2.0/. | ||
| * | ||
| * SPDX-License-Identifier: EPL-2.0 | ||
| * | ||
| * Contributors: | ||
| * ArSysOp - initial API and implementation | ||
| *******************************************************************************/ | ||
| package org.eclipse.passage.lic.internal.hc.remote.impl; | ||
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| import java.io.ByteArrayInputStream; | ||
| import java.io.IOException; | ||
| import java.io.InputStream; | ||
| import java.util.Collections; | ||
| import java.util.List; | ||
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| import org.eclipse.emf.ecore.EObject; | ||
| import org.eclipse.emf.ecore.resource.Resource; | ||
| import org.eclipse.emf.ecore.xmi.impl.XMIResourceImpl; | ||
| import org.eclipse.passage.lic.internal.api.LicensingException; | ||
| import org.eclipse.passage.lic.internal.hc.i18n.AccessMessages; | ||
|
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| /** | ||
| * Reads xmi content from raw byte array and retrieve the single root element of | ||
| * the expected type. Throws {@code LicensingException} is case of any surprise. | ||
| */ | ||
| public final class EObjectFromBytes<T> { | ||
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| private final byte[] content; | ||
| private final Class<T> cls; | ||
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| public EObjectFromBytes(byte[] content, Class<T> cls) { | ||
| this.content = content; | ||
| this.cls = cls; | ||
| } | ||
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| public T get() throws LicensingException { | ||
| return from(only(content())); | ||
| } | ||
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| private List<EObject> content() throws LicensingException { | ||
| Resource resource = new XMIResourceImpl(); | ||
| try (InputStream input = new ByteArrayInputStream(content)) { | ||
| resource.load(input, Collections.emptyMap()); | ||
| } catch (IOException e) { | ||
| throw new LicensingException(AccessMessages.XmiToEObject_failed_xmi_read, e); | ||
| } | ||
| return resource.getContents(); | ||
| } | ||
|
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| private EObject only(List<EObject> contents) throws LicensingException { | ||
| if (contents.size() != 1) { | ||
| throw new LicensingException(String.format(AccessMessages.XmiToEObject_unexpected_amount, contents.size())); | ||
| } | ||
| return contents.get(0); | ||
| } | ||
|
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| private T from(EObject only) throws LicensingException { | ||
| if (!cls.isInstance(only)) { | ||
| throw new LicensingException( | ||
| String.format(AccessMessages.XmiToEObject_unexpected_type, only.eClass().getName())); | ||
| } | ||
| return cls.cast(only); | ||
| } | ||
|
|
||
| } |
43 changes: 43 additions & 0 deletions
43
...ge.lic.hc/src/org/eclipse/passage/lic/internal/hc/remote/impl/EObjectFromXmiResponse.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,43 @@ | ||
| /******************************************************************************* | ||
| * Copyright (c) 2020 ArSysOp | ||
| * | ||
| * This program and the accompanying materials are made available under the | ||
| * terms of the Eclipse Public License 2.0 which is available at | ||
| * https://www.eclipse.org/legal/epl-2.0/. | ||
| * | ||
| * SPDX-License-Identifier: EPL-2.0 | ||
| * | ||
| * Contributors: | ||
| * ArSysOp - initial API and implementation | ||
| *******************************************************************************/ | ||
| package org.eclipse.passage.lic.internal.hc.remote.impl; | ||
|
|
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| import org.eclipse.passage.lic.internal.api.LicensingException; | ||
| import org.eclipse.passage.lic.internal.api.conditions.mining.ContentType; | ||
| import org.eclipse.passage.lic.internal.hc.i18n.AccessMessages; | ||
| import org.eclipse.passage.lic.internal.hc.remote.ResponseHandler; | ||
|
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| public final class EObjectFromXmiResponse<T> implements ResponseHandler<T> { | ||
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| private final Class<T> expected; | ||
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| public EObjectFromXmiResponse(Class<T> expected) { | ||
| this.expected = expected; | ||
| } | ||
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| @Override | ||
| public T read(byte[] raw, String contentType) throws LicensingException { | ||
| // TODO we use `transport`s for Conditions, | ||
| // design transports here too should the need arise | ||
| contentTypeIsExpected(contentType); | ||
| return new EObjectFromBytes<>(raw, expected).get(); | ||
| } | ||
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| private void contentTypeIsExpected(String contentType) throws LicensingException { | ||
| if (!new ContentType.Xml().contentType().equals(contentType)) { | ||
| throw new LicensingException(String.format(AccessMessages.EObjectFromXmiResponse_unexpected_content_type, | ||
| contentType, new ContentType.Xml().contentType())); | ||
| } | ||
| } | ||
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||
| } |