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/*
* Copyright 2020 Nokia
*
* 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 org.onap.validation.yaml;
import org.onap.validation.yaml.exception.YamlProcessingException;
import org.onap.validation.yaml.model.YamlDocument;
import org.onap.validation.yaml.model.YamlDocumentFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.yaml.snakeyaml.Yaml;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
class YamlLoader {
private static final Logger LOGGER = LoggerFactory.getLogger(YamlLoader.class);
private final YamlDocumentFactory documentFactory;
YamlLoader(YamlDocumentFactory documentFactory) {
this.documentFactory = documentFactory;
}
List<YamlDocument> loadMultiDocumentYaml(byte[] yamlWithSchema)
throws YamlDocumentFactory.YamlDocumentParsingException {
List<YamlDocument> documents = new ArrayList<>();
try (InputStream yamlStream = new ByteArrayInputStream(yamlWithSchema)) {
documents.addAll(loadMultiDocumentYaml(yamlStream));
} catch (IOException e) {
LOGGER.error("Failed to load multi document YAML", e);
}
return documents;
}
List<YamlDocument> loadMultiDocumentYamlFile(URL path)
throws YamlDocumentFactory.YamlDocumentParsingException {
List<YamlDocument> documents = new ArrayList<>();
try (InputStream yamlStream = path.openStream()) {
documents.addAll(loadMultiDocumentYaml(yamlStream));
} catch (IOException e) {
LOGGER.error("Failed to load multi document YAML file", e);
}
return documents;
}
List<YamlDocument> loadMultiDocumentYamlFile(String path)
throws YamlProcessingException {
try {
return loadMultiDocumentYamlFile(new URL("file://" + path));
} catch (MalformedURLException e) {
throw new YamlProcessingException("Fail to read file under given path.", e);
}
}
private List<YamlDocument> loadMultiDocumentYaml(InputStream yamlStream) throws YamlDocumentFactory.YamlDocumentParsingException {
List<YamlDocument> documents = new ArrayList<>();
for (Object yamlDocument : new Yaml().loadAll(yamlStream)) {
documents.add(documentFactory.createYamlDocument(yamlDocument));
}
return documents;
}
}
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