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/*
* Copyright © 2016-2017 European Support Limited
* Modification Copyright (C) 2019 Nordix Foundation.
*
* 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.openecomp.sdc.tosca.csar;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import org.openecomp.sdc.be.datatypes.enums.ResourceTypeEnum;
import org.openecomp.sdc.common.errors.Messages;
import org.openecomp.sdc.logging.api.Logger;
import org.openecomp.sdc.logging.api.LoggerFactory;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import static org.openecomp.core.validation.errors.ErrorMessagesFormatBuilder.getErrorWithParameters;
import static org.openecomp.sdc.tosca.csar.CSARConstants.MANIFEST_PNF_METADATA;
import static org.openecomp.sdc.tosca.csar.CSARConstants.METADATA_MF_ATTRIBUTE;
import static org.openecomp.sdc.tosca.csar.CSARConstants.SEPERATOR_MF_ATTRIBUTE;
abstract class AbstractOnboardingManifest implements Manifest{
private static final Logger LOGGER = LoggerFactory.getLogger(AbstractOnboardingManifest.class);
private static final int MAX_ALLOWED_MANIFEST_META_ENTRIES = 4;
protected Map<String, String> metadata;
protected List<String> sources;
protected List<String> errors;
protected Map<String, List<String>> nonManoSources;
protected ResourceTypeEnum type;
protected AbstractOnboardingManifest() {
errors = new ArrayList<>();
sources = new ArrayList<>();
metadata = new HashMap<>();
nonManoSources = new HashMap<>();
}
@Override
public Optional<ResourceTypeEnum> getType(){
if(errors.isEmpty() && !metadata.isEmpty() && metadata.size() == MAX_ALLOWED_MANIFEST_META_ENTRIES) {
for (String key : metadata.keySet()) {
if (MANIFEST_PNF_METADATA.stream().anyMatch(key::equals)) {
return Optional.of(ResourceTypeEnum.PNF);
}
return Optional.of(ResourceTypeEnum.VF);
}
}
return Optional.empty();
}
@Override
public void parse(InputStream is) {
try {
ImmutableList<String> lines = readAllLines(is);
processManifest(lines);
} catch (IOException e){
LOGGER.error(e.getMessage(),e);
errors.add(Messages.MANIFEST_PARSER_INTERNAL.getErrorMessage());
}
}
protected void processManifest(ImmutableList<String> lines) {
if (isEmptyManifest(lines)){
return;
}
Iterator<String> iterator = lines.iterator();
//SOL004 #4.3.2: The manifest file shall start with the package metadata
String line = iterator.next();
if (!isMetadata(line)) {
return;
}
//handle metadata
processMetadata(iterator);
if (errors.isEmpty() && metadata.isEmpty()) {
errors.add(Messages.MANIFEST_NO_METADATA.getErrorMessage());
}
}
protected abstract void processMetadata(Iterator<String> iterator);
protected boolean isEmptyLine(Iterator<String> iterator, String line) {
if(line.isEmpty()){
processMetadata(iterator);
return true;
}
return false;
}
protected boolean isInvalidLine(String line, String[] metaSplit) {
if (metaSplit.length < 2){
reportError(line);
return true;
}
return false;
}
protected boolean isMetadata(String line) {
if(line.trim().equals(METADATA_MF_ATTRIBUTE + SEPERATOR_MF_ATTRIBUTE)){
return true;
}
reportError(line);
return false;
}
protected boolean isEmptyManifest(ImmutableList<String> lines) {
if(lines == null || lines.isEmpty()){
errors.add(Messages.MANIFEST_EMPTY.getErrorMessage());
return true;
}
return false;
}
protected void reportError(String line) {
errors.add(getErrorWithParameters(Messages.MANIFEST_INVALID_LINE.getErrorMessage(), line));
}
protected ImmutableList<String> readAllLines(InputStream is) throws IOException {
if(is == null){
throw new IOException("Input Stream cannot be null!");
}
ImmutableList.Builder<String> builder = ImmutableList.<String> builder();
try (BufferedReader bufferedReader = new BufferedReader(
new InputStreamReader(is, StandardCharsets.UTF_8.newDecoder()))) {
bufferedReader.lines().forEach(builder::add);
}
return builder.build();
}
public Map<String, String> getMetadata() {
if (!isValid()){
return Collections.emptyMap();
}
return ImmutableMap.copyOf(metadata);
}
public List<String> getSources() {
if (!isValid()){
return Collections.emptyList();
}
return ImmutableList.copyOf(sources);
}
public List<String> getErrors() {
return ImmutableList.copyOf(errors);
}
public boolean isValid() {
return errors.isEmpty();
}
public Map<String, List<String>> getNonManoSources() {
if (!isValid()){
return Collections.emptyMap();
}
return ImmutableMap.copyOf(nonManoSources);
}
}
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