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fixed performace

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This commit is contained in:
七锋
2018-04-12 20:10:48 +08:00
parent c340bd6565
commit 9b7de00efb
3 changed files with 128 additions and 29 deletions
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17
dbsync/src/main/java/com/taobao/tddl/dbsync/binlog/FileLogFetcher.java
View File

@@ -75,7 +75,9 @@ public final class FileLogFetcher extends LogFetcher {
fin = new FileInputStream(file);
ensureCapacity(BIN_LOG_HEADER_SIZE);
if (BIN_LOG_HEADER_SIZE != fin.read(buffer, 0, BIN_LOG_HEADER_SIZE)) throw new IOException("No binlog file header");
if (BIN_LOG_HEADER_SIZE != fin.read(buffer, 0, BIN_LOG_HEADER_SIZE)) {
throw new IOException("No binlog file header");
}
if (buffer[0] != BINLOG_MAGIC[0] || buffer[1] != BINLOG_MAGIC[1] || buffer[2] != BINLOG_MAGIC[2]
|| buffer[3] != BINLOG_MAGIC[3]) {
@@ -128,6 +130,19 @@ public final class FileLogFetcher extends LogFetcher {
return true;
}
} else if (limit > 0) {
if (limit >= FormatDescriptionLogEvent.LOG_EVENT_HEADER_LEN) {
int lenPosition = position + 4 + 1 + 4;
long eventLen = ((long) (0xff & buffer[lenPosition++])) | ((long) (0xff & buffer[lenPosition++]) << 8)
| ((long) (0xff & buffer[lenPosition++]) << 16)
| ((long) (0xff & buffer[lenPosition++]) << 24);
if (limit >= eventLen) {
return true;
} else {
ensureCapacity((int) eventLen);
}
}
System.arraycopy(buffer, origin, buffer, 0, limit);
position -= origin;
origin = 0;

137
dbsync/src/main/java/com/taobao/tddl/dbsync/binlog/event/RowsLogBuffer.java
View File

@@ -480,13 +480,27 @@ public final class RowsLogBuffer {
// cal.set(d / 10000, (d % 10000) / 100 - 1, d % 100, t /
// 10000, (t % 10000) / 100, t % 100);
// value = new Timestamp(cal.getTimeInMillis());
value = String.format("%04d-%02d-%02d %02d:%02d:%02d",
d / 10000,
(d % 10000) / 100,
d % 100,
t / 10000,
(t % 10000) / 100,
t % 100);
// value = String.format("%04d-%02d-%02d %02d:%02d:%02d",
// d / 10000,
// (d % 10000) / 100,
// d % 100,
// t / 10000,
// (t % 10000) / 100,
// t % 100);
StringBuilder builder = new StringBuilder();
builder.append(formatNumber(d / 10000, 4))
.append('-')
.append(formatNumber((d % 10000) / 100, 2))
.append('-')
.append(formatNumber(d % 100, 2))
.append(' ')
.append(formatNumber(t / 10000, 2))
.append(':')
.append(formatNumber((t % 10000) / 100, 2))
.append(':')
.append(formatNumber(t % 100, 2));
value = builder.toString();
}
javaType = Types.TIMESTAMP;
length = 8;
@@ -540,13 +554,27 @@ public final class RowsLogBuffer {
// % (1 << 5)), (int) (hms >> 12),
// (int) ((hms >> 6) % (1 << 6)), (int) (hms % (1 << 6)));
// value = new Timestamp(cal.getTimeInMillis());
second = String.format("%04d-%02d-%02d %02d:%02d:%02d",
(int) (ym / 13),
(int) (ym % 13),
(int) (ymd % (1 << 5)),
(int) (hms >> 12),
(int) ((hms >> 6) % (1 << 6)),
(int) (hms % (1 << 6)));
// second = String.format("%04d-%02d-%02d %02d:%02d:%02d",
// (int) (ym / 13),
// (int) (ym % 13),
// (int) (ymd % (1 << 5)),
// (int) (hms >> 12),
// (int) ((hms >> 6) % (1 << 6)),
// (int) (hms % (1 << 6)));
StringBuilder builder = new StringBuilder();
builder.append(formatNumber((int) (ym / 13), 4))
.append('-')
.append(formatNumber((int) (ym % 13), 2))
.append('-')
.append(formatNumber((int) (ymd % (1 << 5)), 2))
.append(' ')
.append(formatNumber((int) (hms >> 12), 2))
.append(':')
.append(formatNumber((int) ((hms >> 6) % (1 << 6)), 2))
.append(':')
.append(formatNumber((int) (hms % (1 << 6)), 2));
second = builder.toString();
}
if (meta >= 1) {
@@ -575,11 +603,22 @@ public final class RowsLogBuffer {
// cal.set(70, 0, 1, i32 / 10000, (i32 % 10000) / 100, i32 %
// 100);
// value = new Time(cal.getTimeInMillis());
value = String.format("%s%02d:%02d:%02d",
(i32 >= 0) ? "" : "-",
u32 / 10000,
(u32 % 10000) / 100,
u32 % 100);
// value = String.format("%s%02d:%02d:%02d",
// (i32 >= 0) ? "" : "-",
// u32 / 10000,
// (u32 % 10000) / 100,
// u32 % 100);
StringBuilder builder = new StringBuilder();
if (i32 < 0) {
builder.append('-');
}
builder.append(formatNumber(u32 / 10000, 2))
.append(':')
.append(formatNumber((u32 % 10000) / 100, 2))
.append(':')
.append(formatNumber(u32 % 100, 2));
value = builder.toString();
}
javaType = Types.TIME;
length = 3;
@@ -673,11 +712,22 @@ public final class RowsLogBuffer {
// value = new Time(cal.getTimeInMillis());
long ultime = Math.abs(ltime);
intpart = ultime >> 24;
second = String.format("%s%02d:%02d:%02d",
ltime >= 0 ? "" : "-",
(int) ((intpart >> 12) % (1 << 10)),
(int) ((intpart >> 6) % (1 << 6)),
(int) (intpart % (1 << 6)));
// second = String.format("%s%02d:%02d:%02d",
// ltime >= 0 ? "" : "-",
// (int) ((intpart >> 12) % (1 << 10)),
// (int) ((intpart >> 6) % (1 << 6)),
// (int) (intpart % (1 << 6)));
StringBuilder builder = new StringBuilder();
if (ltime < 0) {
builder.append('-');
}
builder.append(formatNumber((int) ((intpart >> 12) % (1 << 10)), 2))
.append(':')
.append(formatNumber((int) ((intpart >> 6) % (1 << 6)), 2))
.append(':')
.append(formatNumber((int) (intpart % (1 << 6)), 2));
second = builder.toString();
}
if (meta >= 1) {
@@ -717,7 +767,16 @@ public final class RowsLogBuffer {
// cal.set((i32 / (16 * 32)), (i32 / 32 % 16) - 1, (i32 %
// 32));
// value = new java.sql.Date(cal.getTimeInMillis());
value = String.format("%04d-%02d-%02d", i32 / (16 * 32), i32 / 32 % 16, i32 % 32);
// value = String.format("%04d-%02d-%02d", i32 / (16 * 32),
// i32 / 32 % 16, i32 % 32);
StringBuilder builder = new StringBuilder();
builder.append(formatNumber(i32 / (16 * 32), 4))
.append('-')
.append(formatNumber(i32 / 32 % 16, 2))
.append('-')
.append(formatNumber(i32 % 32, 2));
value = builder.toString();
}
javaType = Types.DATE;
length = 3;
@@ -970,7 +1029,8 @@ public final class RowsLogBuffer {
throw new IllegalArgumentException("!! Unknown JSON packlen = " + meta);
}
if (0 == len) {
// fixed issue #1 by lava, json column of zero length has no value, value parsing should be skipped
// fixed issue #1 by lava, json column of zero length has no
// value, value parsing should be skipped
value = "";
} else {
int position = buffer.position();
@@ -1066,4 +1126,29 @@ public final class RowsLogBuffer {
return sec.substring(0, meta);
}
private String formatNumber(int d, int size) {
return leftPad(String.valueOf(d), size, '0');
}
private String leftPad(String str, int size, char padChar) {
if (str == null) {
return null;
}
int pads = size - str.length();
if (pads <= 0) {
return str; // returns original String when possible
}
return padding(pads, padChar).concat(str);
}
private String padding(int repeat, char padChar) throws IndexOutOfBoundsException {
if (repeat < 0) {
throw new IndexOutOfBoundsException("Cannot pad a negative amount: " + repeat);
}
final char[] buf = new char[repeat];
for (int i = 0; i < buf.length; i++) {
buf[i] = padChar;
}
return new String(buf);
}
}