[VOL-2312] Logging - Integrate voltctl with new etcd-based dynamic loglevel mechanism. Testing is in progress
Change-Id: I2e13bb79008c9a49ebb6f58e575f51efebe6dbfd
diff --git a/vendor/github.com/pierrec/lz4/reader.go b/vendor/github.com/pierrec/lz4/reader.go
index 90e8efe..126b792 100644
--- a/vendor/github.com/pierrec/lz4/reader.go
+++ b/vendor/github.com/pierrec/lz4/reader.go
@@ -25,6 +25,8 @@
data []byte // Uncompressed data.
idx int // Index of unread bytes into data.
checksum xxh32.XXHZero // Frame hash.
+ skip int64 // Bytes to skip before next read.
+ dpos int64 // Position in dest
}
// NewReader returns a new LZ4 frame decoder.
@@ -275,8 +277,20 @@
z.idx = 0
}
+ if z.skip > int64(len(z.data[z.idx:])) {
+ z.skip -= int64(len(z.data[z.idx:]))
+ z.dpos += int64(len(z.data[z.idx:]))
+ z.idx = len(z.data)
+ return 0, nil
+ }
+
+ z.idx += int(z.skip)
+ z.dpos += z.skip
+ z.skip = 0
+
n := copy(buf, z.data[z.idx:])
z.idx += n
+ z.dpos += int64(n)
if debugFlag {
debug("copied %d bytes to input", n)
}
@@ -284,6 +298,20 @@
return n, nil
}
+// Seek implements io.Seeker, but supports seeking forward from the current
+// position only. Any other seek will return an error. Allows skipping output
+// bytes which aren't needed, which in some scenarios is faster than reading
+// and discarding them.
+// Note this may cause future calls to Read() to read 0 bytes if all of the
+// data they would have returned is skipped.
+func (z *Reader) Seek(offset int64, whence int) (int64, error) {
+ if offset < 0 || whence != io.SeekCurrent {
+ return z.dpos + z.skip, ErrUnsupportedSeek
+ }
+ z.skip += offset
+ return z.dpos + z.skip, nil
+}
+
// Reset discards the Reader's state and makes it equivalent to the
// result of its original state from NewReader, but reading from r instead.
// This permits reusing a Reader rather than allocating a new one.