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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.vendorsoftwareproduct.impl.orchestration.csar;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import org.apache.commons.lang.StringUtils;
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.io.Reader;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import static org.openecomp.core.validation.errors.ErrorMessagesFormatBuilder.getErrorWithParameters;
import static org.openecomp.sdc.vendorsoftwareproduct.impl.orchestration.csar.CSARConstants.METADATA_MF_ATTRIBUTE;
import static org.openecomp.sdc.vendorsoftwareproduct.impl.orchestration.csar.CSARConstants.SEPERATOR_MF_ATTRIBUTE;
import static org.openecomp.sdc.vendorsoftwareproduct.impl.orchestration.csar.CSARConstants.SOURCE_MF_ATTRIBUTE;
public class OnboardingManifest {
private static final Logger LOGGER = LoggerFactory.getLogger(OnboardingManifest.class);
private Map<String, String> metadata;
private List<String> sources;
private List<String> errors;
private State state;
private enum State {
START, PROCESS_METADATA, PROCESS_SOURCES, ERROR
}
public OnboardingManifest(InputStream is) {
errors = new ArrayList<>();
sources = new ArrayList<>();
metadata = new HashMap<>();
parseManifest(is);
}
private void parseManifest(InputStream is) {
try {
ImmutableList<String> lines = readAllLines(is);
state = State.START;
for (String line : lines) {
line = line.trim();
if (!StringUtils.isEmpty(line.trim())) {
state = processLine(state, line);
}
}
if (errors.isEmpty()) {
if (metadata.isEmpty()) {
errors.add(Messages.MANIFEST_NO_METADATA.getErrorMessage());
}
if (sources.isEmpty()) {
errors.add(Messages.MANIFEST_NO_SOURCES.getErrorMessage());
}
}
} catch (IOException e){
LOGGER.error(e.getMessage(),e);
errors.add(Messages.MANIFEST_PARSER_INTERNAL.getErrorMessage());
}
}
private State processLine(State state, String line) {
State newState = state;
switch (state) {
case START:
newState = startProcessLine(state, line);
break;
case PROCESS_METADATA:
newState = processMetaData(state, line);
break;
case PROCESS_SOURCES:
processSourceLine(line);
break;
case ERROR:
break;
default:
}
return newState;
}
private State startProcessLine(State state, String line) {
State newState = state;
if (line.trim().equals(METADATA_MF_ATTRIBUTE + SEPERATOR_MF_ATTRIBUTE)) {
newState = State.PROCESS_METADATA;
} else {
reportError(line);
}
return newState;
}
private State processMetaData(State state, String line) {
State newState = state;
String[] metaSplit = line.split(SEPERATOR_MF_ATTRIBUTE);
if (metaSplit.length < 2){
reportError(line);
return state;
}
if (!metaSplit[0].equals(SOURCE_MF_ATTRIBUTE)){
String value = line.replace(metaSplit[0] + SEPERATOR_MF_ATTRIBUTE, "").trim();
metadata.put(metaSplit[0],value);
} else {
newState = State.PROCESS_SOURCES;
processSourceLine(line);
}
return newState;
}
private void processSourceLine(String line) {
if (line.startsWith(SOURCE_MF_ATTRIBUTE+SEPERATOR_MF_ATTRIBUTE)){
String value = line.replaceAll(SOURCE_MF_ATTRIBUTE + SEPERATOR_MF_ATTRIBUTE, "").trim();
sources.add(value);
}else {
reportError(line);
}
}
private void reportError(String line) {
errors.add(getErrorWithParameters(Messages.MANIFEST_INVALID_LINE.getErrorMessage(), line));
state = State.ERROR;
}
private ImmutableList<String> readAllLines(InputStream is) throws IOException {
ImmutableList.Builder<String> builder = ImmutableList.<String> builder();
try (Reader reader = new InputStreamReader(is, StandardCharsets.UTF_8.newDecoder());
BufferedReader bufferedReader = new BufferedReader(reader);) {
for (; ; ) {
String line = bufferedReader.readLine();
if (line == null)
break;
builder.add(line);
}
}
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();
}
}
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