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A library for using various capabilities of Black Duck, notably the REST API and signature scanning.
/**
* blackduck-common
*
* Copyright (c) 2019 Synopsys, Inc.
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 com.synopsys.integration.blackduck.service.model;
import java.io.EOFException;
import java.io.IOException;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import org.apache.commons.lang3.StringUtils;
import com.synopsys.integration.log.IntLogger;
public class ScannerSplitStream extends OutputStream {
// https://www.cs.cmu.edu/~pattis/15-1XX/common/handouts/ascii.html
private static final int EOF = -1; // End of file
private static final int ETX = 3; // End of text, should have no more data
private static final int EOT = 4; // End of transmission, no more data
private static final int LF = 10; // Line feed, new line
private static final int CR = 13; // Carriage return
private static final String EXCEPTION = "Exception:";
private static final String FINISHED = "Finished in";
private static final String ERROR = "ERROR:";
private static final String WARN = "WARN:";
private static final String INFO = "INFO:";
private static final String DEBUG = "DEBUG:";
private static final String TRACE = "TRACE:";
private static final String LINE_SEPARATOR = System.getProperty("line.separator");
private final OutputStream outputFileStream;
private final IntLogger logger;
private String output = "";
private String lineBuffer = "";
private String currentLine = "";
private int previousCodePoint = -1;
public ScannerSplitStream(final IntLogger logger, final OutputStream outputFileStream) {
this.outputFileStream = outputFileStream;
this.logger = logger;
}
public String getOutput() {
return output;
}
public Boolean hasOutput() {
return StringUtils.isNotBlank(output);
}
@Override
public void write(final int codePoint) throws IOException {
outputFileStream.write(codePoint);
if (EOF == codePoint) {
throw new EOFException();
}
boolean atLineEnd = false;
if (ETX == codePoint || EOT == codePoint) {
atLineEnd = true;
} else if (LF == codePoint && CR != previousCodePoint) {
atLineEnd = true;
} else if (LF == codePoint && CR == previousCodePoint) {
atLineEnd = true;
// also need to remove the previously consumed CR
currentLine = currentLine.substring(0, currentLine.length() - 1);
} else if (LF != codePoint && CR == previousCodePoint) {
processLine(currentLine);
currentLine = "";
}
previousCodePoint = codePoint;
if (atLineEnd) {
processLine(currentLine);
currentLine = "";
} else {
final String stringAscii = new String(Character.toChars(codePoint));
currentLine += stringAscii;
}
}
private Boolean isLoggableLine(final String line) {
final String trimmedLine = line.trim();
if (trimmedLine.startsWith(ERROR)) {
return true;
}
if (trimmedLine.startsWith(WARN)) {
return true;
}
if (trimmedLine.startsWith(INFO)) {
return true;
}
if (trimmedLine.startsWith(DEBUG)) {
return true;
}
if (trimmedLine.startsWith(TRACE)) {
return true;
}
if (StringUtils.containsIgnoreCase(trimmedLine, EXCEPTION)) {
return true;
}
if (StringUtils.containsIgnoreCase(trimmedLine, FINISHED)) {
return true;
}
return false;
}
private void processLine(final String line) throws UnsupportedEncodingException {
if (lineBuffer.length() == 0) {
// First log line found, put it in the buffer
lineBuffer = line;
} else if (isLoggableLine(line)) {
// next real log message came in, print the log in the buffer
// print stored lines
writeToConsole(lineBuffer);
// replace with the current line
lineBuffer = line;
} else {
// We assume that each new log starts with the log level, if this
// line does not contain a log level it
// must only be a piece of a log
// needs to be added into the buffer
final StringBuilder builder = new StringBuilder();
builder.append(lineBuffer);
builder.append(LINE_SEPARATOR);
builder.append(line);
lineBuffer = builder.toString();
}
}
@Override
public void write(final byte[] byteArray) throws IOException {
outputFileStream.write(byteArray);
final String currentLine = new String(byteArray, "UTF-8");
if (currentLine.contains(LINE_SEPARATOR)) {
final String[] splitLines = currentLine.split(LINE_SEPARATOR);
for (final String line : splitLines) {
processLine(line);
}
} else {
processLine(currentLine);
}
}
@Override
public void write(final byte[] byteArray, final int offset, final int length) throws IOException {
outputFileStream.write(byteArray, offset, length);
final String currentLine = new String(byteArray, offset, length, "UTF-8");
if (currentLine.contains(LINE_SEPARATOR)) {
final String[] splitLines = currentLine.split(LINE_SEPARATOR);
for (final String line : splitLines) {
processLine(line);
}
} else {
processLine(currentLine);
}
}
@Override
public void flush() throws IOException {
outputFileStream.flush();
// Print whatever is left in the buffer
writeToConsole(lineBuffer);
lineBuffer = "";
// Print whatever is left in the buffer
if (StringUtils.isNotBlank(currentLine)) {
writeToConsole(currentLine);
currentLine = "";
}
}
@Override
public void close() throws IOException {
outputFileStream.close();
// Do not close the listener, will not be able to log to the UI anymore
// if you do
}
private void writeToConsole(final String line) {
final String trimmedLine = line.trim();
if (trimmedLine.startsWith(DEBUG) || trimmedLine.startsWith(TRACE)) {
// We dont want to print Debug or Trace logs to the logger
return;
}
final StringBuilder outputBuilder = new StringBuilder();
outputBuilder.append(output);
if (trimmedLine.startsWith(ERROR)) {
outputBuilder.append(trimmedLine);
outputBuilder.append(LINE_SEPARATOR);
logger.error(trimmedLine);
} else if (trimmedLine.startsWith(WARN)) {
outputBuilder.append(trimmedLine);
outputBuilder.append(LINE_SEPARATOR);
logger.warn(trimmedLine);
} else if (trimmedLine.startsWith(INFO)) {
outputBuilder.append(trimmedLine);
outputBuilder.append(LINE_SEPARATOR);
logger.info(trimmedLine);
} else if (StringUtils.containsIgnoreCase(trimmedLine, EXCEPTION)) {
// looking for 'Exception in thread' type messages
outputBuilder.append(trimmedLine);
outputBuilder.append(LINE_SEPARATOR);
logger.error(trimmedLine);
} else if (StringUtils.containsIgnoreCase(trimmedLine, FINISHED)) {
outputBuilder.append(trimmedLine);
outputBuilder.append(LINE_SEPARATOR);
logger.info(trimmedLine);
}
output = outputBuilder.toString();
}
}
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