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io.hyperfoil.core.util.Util Maven / Gradle / Ivy
package io.hyperfoil.core.util;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import java.nio.charset.CharsetEncoder;
import java.nio.charset.CoderResult;
import java.nio.charset.StandardCharsets;
import java.util.BitSet;
import java.util.HashSet;
import java.util.Set;
import io.netty.buffer.ByteBuf;
public class Util {
private Util() {}
public static boolean compareIgnoreCase(byte b1, byte b2) {
return b1 == b2 || toUpperCase(b1) == toUpperCase(b2) || toLowerCase(b1) == toLowerCase(b2);
}
private static byte toLowerCase(byte b) {
return b >= 'A' && b <= 'Z' ? (byte) (b + 32) : b;
}
private static byte toUpperCase(byte b) {
return b >= 'a' && b <= 'z' ? (byte) (b - 32) : b;
}
/**
* Pretty prints time in 9 spaces
*/
public static String prettyPrintNanos(long meanResponseTime) {
if (meanResponseTime < 1000) {
return String.format("%6d ns", meanResponseTime);
} else if (meanResponseTime < 1000_000) {
return String.format("%6.2f μs", meanResponseTime / 1000d);
} else if (meanResponseTime < 1000_000_000) {
return String.format("%6.2f ms", meanResponseTime / 1000_000d);
} else {
return String.format("%6.2f s ", meanResponseTime / 1000_000_000d);
}
}
public static String toString(ByteBuf buf, int offset, int length) {
if (buf.hasArray()) {
return new String(buf.array(), buf.arrayOffset() + offset, length, StandardCharsets.UTF_8);
} else {
byte[] strBytes = new byte[length];
buf.getBytes(offset, strBytes, 0, length);
return new String(strBytes, StandardCharsets.UTF_8);
}
}
public static String toString(InputStream inputStream) throws IOException {
ByteArrayOutputStream result = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
int length;
while ((length = inputStream.read(buffer)) != -1) {
result.write(buffer, 0, length);
}
return result.toString(StandardCharsets.UTF_8.name());
}
public static ByteBuf string2byteBuf(String str, ByteBuf buffer) {
// TODO: allocations everywhere but at least not the bytes themselves...
CharBuffer input = CharBuffer.wrap(str);
ByteBuffer output = buffer.nioBuffer(buffer.writerIndex(), buffer.capacity() - buffer.writerIndex());
CharsetEncoder encoder = StandardCharsets.UTF_8.newEncoder();
int accumulatedBytes = 0;
for (;;) {
CoderResult result = encoder.encode(input, output, true);
if (result.isError()) {
throw new RuntimeException("Cannot encode: " + result + ", string is " + str);
} else if (result.isUnderflow()) {
buffer.writerIndex(accumulatedBytes + output.position());
return buffer;
} else if (result.isOverflow()) {
buffer.capacity(buffer.capacity() * 2);
int writtenBytes = output.position();
accumulatedBytes += writtenBytes;
output = buffer.nioBuffer(accumulatedBytes, buffer.capacity() - accumulatedBytes);
} else {
throw new IllegalStateException();
}
}
}
public static String explainCauses(Throwable e) {
StringBuilder causes = new StringBuilder();
Set reported = new HashSet<>();
while (e != null && !reported.contains(e)) {
if (causes.length() != 0) {
causes.append(": ");
}
causes.append(e.getMessage());
reported.add(e);
e = e.getCause();
}
return causes.toString();
}
private static class URLEncoding {
private static final BitSet DONT_NEED_ENCODING = new BitSet();
static {
for (int i = 'a'; i <= 'z'; i++) {
DONT_NEED_ENCODING.set(i);
}
for (int i = 'A'; i <= 'Z'; i++) {
DONT_NEED_ENCODING.set(i);
}
for (int i = '0'; i <= '9'; i++) {
DONT_NEED_ENCODING.set(i);
}
DONT_NEED_ENCODING.set('-');
DONT_NEED_ENCODING.set('_');
DONT_NEED_ENCODING.set('.');
DONT_NEED_ENCODING.set('*');
}
private static final int[] HEX = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
}
public static void urlEncode(String string, ByteBuf buf) {
// TODO: more efficient implementation without allocation
byte[] bytes = string.getBytes(StandardCharsets.UTF_8);
for (byte b : bytes) {
if (URLEncoding.DONT_NEED_ENCODING.get(b)) {
buf.ensureWritable(1);
buf.writeByte(b);
} else if (b == ' ') {
buf.ensureWritable(1);
buf.writeByte('+');
} else {
buf.ensureWritable(3);
buf.writeByte('%');
buf.writeByte(URLEncoding.HEX[(b >> 4) & 0xF]);
buf.writeByte(URLEncoding.HEX[b & 0xF]);
}
}
}
public static String prettyPrintData(double value) {
double scaled;
String suffix;
if (value >= 1024 * 1024 * 1024) {
scaled = (double) value / (1024 * 1024 * 1024);
suffix = "GB";
} else if (value >= 1024 * 1024) {
scaled = (double) value / (1024 * 1024);
suffix = "MB";
} else if (value >= 1024) {
scaled = (double) value / 1024;
suffix = "kB";
} else {
scaled = value;
suffix = "B ";
}
return String.format("%6.2f%s", scaled, suffix);
}
private static final int[] SIZE_TABLE = new int[] {
1_000_000_000, 100_000_000, 10_000_000, 1_000_000, 100_000, 10_000, 1000, 100, 10
};
public static void intAsText2byteBuf(int value, ByteBuf buf) {
if (value < 0) {
buf.writeByte('-');
value = -value;
}
int i = 0;
for (; i < SIZE_TABLE.length; ++i) {
if (value >= SIZE_TABLE[i]) break;
}
for (; i < SIZE_TABLE.length; ++i) {
int q = value / SIZE_TABLE[i];
assert q >= 0 && q <= 9;
buf.writeByte('0' + q);
value -= q * SIZE_TABLE[i];
}
assert value >= 0 && value <= 9;
buf.writeByte('0' + value);
}
}
