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/*
* Copyright © 2016-2017 European Support Limited
*
* 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.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 static org.openecomp.core.validation.errors.ErrorMessagesFormatBuilder.getErrorWithParameters;
import static org.openecomp.sdc.tosca.csar.CSARConstants.METADATA_MF_ATTRIBUTE;
import static org.openecomp.sdc.tosca.csar.CSARConstants.NON_MANO_MF_ATTRIBUTE;
import static org.openecomp.sdc.tosca.csar.CSARConstants.SEPERATOR_MF_ATTRIBUTE;
import static org.openecomp.sdc.tosca.csar.CSARConstants.SOURCE_MF_ATTRIBUTE;
public class OnboardingManifest implements Manifest{
private static final Logger LOGGER = LoggerFactory.getLogger(OnboardingManifest.class);
private Map<String, String> metadata;
private List<String> sources;
private List<String> errors;
private Map<String, List<String>> nonManoSources;
private OnboardingManifest() {
errors = new ArrayList<>();
sources = new ArrayList<>();
metadata = new HashMap<>();
nonManoSources = new HashMap<>();
}
/**
* This Method will parse manifest, extracting fields mandatory/non-mandatory,
* if error occurred it's recorded and will be used for deciding if manifest is valid
* @param is manifest file input stream
* @return Manifest object
*/
public static Manifest parse(InputStream is) {
OnboardingManifest manifest = new OnboardingManifest();
try {
ImmutableList<String> lines = manifest.readAllLines(is);
manifest.processManifest(lines);
} catch (IOException e){
LOGGER.error(e.getMessage(),e);
manifest.errors.add(Messages.MANIFEST_PARSER_INTERNAL.getErrorMessage());
}
return manifest;
}
private void processManifest(ImmutableList<String> lines) {
if(lines == null || lines.isEmpty()){
errors.add(Messages.MANIFEST_EMPTY.getErrorMessage());
return;
}
Iterator<String> iterator = lines.iterator();
//SOL004 #4.3.2: The manifest file shall start with the package metadata
String line = iterator.next();
if(!line.trim().equals(METADATA_MF_ATTRIBUTE + SEPERATOR_MF_ATTRIBUTE)){
reportError(line);
return;
}
//handle metadata
processMetadata(iterator);
if (errors.isEmpty()) {
if (metadata.isEmpty()) {
errors.add(Messages.MANIFEST_NO_METADATA.getErrorMessage());
}
if (sources.isEmpty()) {
errors.add(Messages.MANIFEST_NO_SOURCES.getErrorMessage());
}
}
}
private void processSourcesAndNonManoSources(Iterator<String> iterator, String prevLine) {
if(prevLine.isEmpty()){
if(iterator.hasNext()){
processSourcesAndNonManoSources(iterator, iterator.next());
}
}else if(prevLine.startsWith(SOURCE_MF_ATTRIBUTE+SEPERATOR_MF_ATTRIBUTE)){
processSource(iterator, prevLine);
} else if(prevLine.startsWith(NON_MANO_MF_ATTRIBUTE+SEPERATOR_MF_ATTRIBUTE)){
//non mano should be the last bit in manifest file,
// all sources after non mano will be placed to the last non mano
// key, if any other structure met error reported
processNonManoInputs(iterator, iterator.next());
}else{
reportError(prevLine);
}
}
private void processSource(Iterator<String> iterator, String prevLine) {
String value = prevLine.substring((SOURCE_MF_ATTRIBUTE + SEPERATOR_MF_ATTRIBUTE).length()).trim();
sources.add(value);
if(iterator.hasNext()) {
processSourcesAndNonManoSources(iterator, iterator.next());
}
}
private void processMetadata(Iterator<String> iterator) {
if(!iterator.hasNext()){
return;
}
String line = iterator.next();
if(line.isEmpty()){
processMetadata(iterator);
return;
}
String[] metaSplit = line.split(SEPERATOR_MF_ATTRIBUTE);
if (metaSplit.length < 2){
reportError(line);
return;
}
if (!metaSplit[0].equals(SOURCE_MF_ATTRIBUTE) && !metaSplit[0].equals(NON_MANO_MF_ATTRIBUTE)){
String value = line.substring((metaSplit[0] + SEPERATOR_MF_ATTRIBUTE).length()).trim();
metadata.put(metaSplit[0].trim(),value.trim());
processMetadata(iterator);
}
else {
processSourcesAndNonManoSources(iterator, line);
}
}
private void processNonManoInputs(Iterator<String> iterator, String prevLine) {
//Non Mano input should always start with key, if no key available report an error
if(prevLine.trim().equals(SOURCE_MF_ATTRIBUTE + SEPERATOR_MF_ATTRIBUTE)){
reportError(prevLine);
return;
}
//key should contain : separator
if(!prevLine.contains(SEPERATOR_MF_ATTRIBUTE)){
reportError(prevLine);
return;
}
//key shouldn't have value in the same line
String[] metaSplit = prevLine.trim().split(SEPERATOR_MF_ATTRIBUTE);
if (metaSplit.length > 1){
reportError(prevLine);
return;
}
int index = prevLine.indexOf(':');
if(index > 0){
prevLine = prevLine.substring(0, index);
}
processNonManoSource(iterator, prevLine, new ArrayList<>());
}
private void processNonManoSource(Iterator<String> iterator, String key, List<String> sources) {
if(!iterator.hasNext()){
return;
}
String line = iterator.next();
if(line.isEmpty()){
processNonManoSource(iterator, key, sources);
}else if(line.trim().startsWith(SOURCE_MF_ATTRIBUTE + SEPERATOR_MF_ATTRIBUTE)){
String value = line.replace(SOURCE_MF_ATTRIBUTE + SEPERATOR_MF_ATTRIBUTE, "").trim();
sources.add(value);
processNonManoSource(iterator, key, sources);
}else {
processNonManoInputs(iterator, line);
}
nonManoSources.put(key.trim(), sources);
}
private void reportError(String line) {
errors.add(getErrorWithParameters(Messages.MANIFEST_INVALID_LINE.getErrorMessage(), line));
}
private 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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