/**
* @brief MessageSet reader for MsgVersion v2 (FetchRequest v4)
*/
static rd_kafka_resp_err_t
rd_kafka_msgset_reader_v2 (rd_kafka_msgset_reader_t *msetr) {
rd_kafka_buf_t *rkbuf = msetr->msetr_rkbuf;
rd_kafka_toppar_t *rktp = msetr->msetr_rktp;
struct msgset_v2_hdr hdr;
rd_slice_t save_slice;
rd_kafka_resp_err_t err = RD_KAFKA_RESP_ERR_NO_ERROR;
size_t len_start;
size_t payload_size;
int64_t LastOffset; /* Last absolute Offset in MessageSet header */
/* Only log decoding errors if protocol debugging enabled. */
int log_decode_errors = (rkbuf->rkbuf_rkb->rkb_rk->rk_conf.debug &
RD_KAFKA_DBG_PROTOCOL) ? LOG_DEBUG : 0;
rd_kafka_buf_read_i64(rkbuf, &hdr.BaseOffset);
rd_kafka_buf_read_i32(rkbuf, &hdr.Length);
len_start = rd_slice_offset(&rkbuf->rkbuf_reader);
if (unlikely(hdr.Length < RD_KAFKAP_MSGSET_V2_SIZE - 8 - 4))
rd_kafka_buf_parse_fail(rkbuf,
"%s [%"PRId32"] "
"MessageSet at offset %"PRId64
" length %"PRId32" < header size %d",
rktp->rktp_rkt->rkt_topic->str,
rktp->rktp_partition,
hdr.BaseOffset, hdr.Length,
RD_KAFKAP_MSGSET_V2_SIZE - 8 - 4);
rd_kafka_buf_read_i32(rkbuf, &hdr.PartitionLeaderEpoch);
rd_kafka_buf_read_i8(rkbuf, &hdr.MagicByte);
rd_kafka_buf_read_i32(rkbuf, &hdr.Crc);
if (msetr->msetr_rkb->rkb_rk->rk_conf.check_crcs) {
/* Verify CRC32C if desired. */
uint32_t calc_crc;
rd_slice_t crc_slice;
size_t crc_len = hdr.Length-4-1-4;
if (!rd_slice_narrow_copy_relative(
&rkbuf->rkbuf_reader,
&crc_slice, crc_len))
rd_kafka_buf_check_len(rkbuf, crc_len);
calc_crc = rd_slice_crc32c(&crc_slice);
if (unlikely((uint32_t)hdr.Crc != calc_crc)) {
/* Propagate CRC error to application and
* continue with next message. */
rd_kafka_q_op_err(&msetr->msetr_rkq,
RD_KAFKA_OP_CONSUMER_ERR,
RD_KAFKA_RESP_ERR__BAD_MSG,
msetr->msetr_tver->version,
rktp,
hdr.BaseOffset,
"MessageSet at offset %"PRId64
" (%"PRId32" bytes) "
"failed CRC32C check "
"(original 0x%"PRIx32" != "
"calculated 0x%"PRIx32")",
hdr.BaseOffset,
hdr.Length, hdr.Crc, calc_crc);
rd_kafka_buf_skip_to(rkbuf, crc_len);
rd_atomic64_add(&msetr->msetr_rkb->rkb_c.rx_err, 1);
return RD_KAFKA_RESP_ERR_NO_ERROR;
}
}
rd_kafka_buf_read_i16(rkbuf, &hdr.Attributes);
rd_kafka_buf_read_i32(rkbuf, &hdr.LastOffsetDelta);
LastOffset = hdr.BaseOffset + hdr.LastOffsetDelta;
rd_kafka_buf_read_i64(rkbuf, &hdr.BaseTimestamp);
rd_kafka_buf_read_i64(rkbuf, &hdr.MaxTimestamp);
rd_kafka_buf_read_i64(rkbuf, &hdr.PID);
rd_kafka_buf_read_i16(rkbuf, &hdr.ProducerEpoch);
rd_kafka_buf_read_i32(rkbuf, &hdr.BaseSequence);
rd_kafka_buf_read_i32(rkbuf, &hdr.RecordCount);
/* Payload size is hdr.Length - MessageSet headers */
payload_size = hdr.Length - (rd_slice_offset(&rkbuf->rkbuf_reader) -
len_start);
if (unlikely(payload_size > rd_kafka_buf_read_remain(rkbuf)))
rd_kafka_buf_parse_fail(rkbuf,
"%s [%"PRId32"] "
"MessageSet at offset %"PRId64
" payload size %"PRIusz
" > %"PRIusz" remaining bytes",
rktp->rktp_rkt->rkt_topic->str,
rktp->rktp_partition,
hdr.BaseOffset, payload_size,
rd_kafka_buf_read_remain(rkbuf));
/* If entire MessageSet contains old outdated offsets, skip it. */
if (LastOffset < rktp->rktp_offsets.fetch_offset) {
rd_kafka_buf_skip(rkbuf, payload_size);
goto done;
}
/* Ignore control messages */
if (unlikely((hdr.Attributes & RD_KAFKA_MSGSET_V2_ATTR_CONTROL))) {
rd_kafka_buf_skip(rkbuf, payload_size);
goto done;
}
msetr->msetr_v2_hdr = &hdr;
/* Handle compressed MessageSet */
if (hdr.Attributes & RD_KAFKA_MSG_ATTR_COMPRESSION_MASK) {
const void *compressed;
compressed = rd_slice_ensure_contig(&rkbuf->rkbuf_reader,
payload_size);
rd_assert(compressed);
err = rd_kafka_msgset_reader_decompress(
msetr, 2/*MsgVersion v2*/, hdr.Attributes,
hdr.BaseTimestamp, hdr.BaseOffset,
compressed, payload_size);
if (err)
goto err;
} else {
/* Read uncompressed messages */
/* Save original slice, reduce size of the current one to
* be limited by the MessageSet.Length, and then start reading
* messages until the lesser slice is exhausted. */
if (!rd_slice_narrow_relative(&rkbuf->rkbuf_reader,
&save_slice, payload_size))
rd_kafka_buf_check_len(rkbuf, payload_size);
/* Read messages */
err = rd_kafka_msgset_reader_msgs_v2(msetr);
/* Restore wider slice */
rd_slice_widen(&rkbuf->rkbuf_reader, &save_slice);
if (unlikely(err))
goto err;
}
done:
/* Set the next fetch offset to the MessageSet header's last offset + 1
* to avoid getting stuck on compacted MessageSets where the last
* Message in the MessageSet has an Offset < MessageSet header's
* last offset. See KAFKA-5443 */
if (likely(LastOffset >= msetr->msetr_rktp->rktp_offsets.fetch_offset))
msetr->msetr_rktp->rktp_offsets.fetch_offset = LastOffset + 1;
msetr->msetr_v2_hdr = NULL;
return RD_KAFKA_RESP_ERR_NO_ERROR;
err_parse:
/* Count all parse errors as partial message errors. */
rd_atomic64_add(&msetr->msetr_rkb->rkb_c.rx_partial, 1);
err = rkbuf->rkbuf_err;
/* FALLTHRU */
err:
msetr->msetr_v2_hdr = NULL;
return err;
}
/**
* @brief Message parser for MsgVersion v2
*/
static rd_kafka_resp_err_t
rd_kafka_msgset_reader_msg_v2 (rd_kafka_msgset_reader_t *msetr) {
rd_kafka_buf_t *rkbuf = msetr->msetr_rkbuf;
rd_kafka_toppar_t *rktp = msetr->msetr_rktp;
struct {
int64_t Length;
int64_t MsgAttributes; /* int8_t, but int64 req. for varint */
int64_t TimestampDelta;
int64_t OffsetDelta;
int64_t Offset; /* Absolute offset */
rd_kafkap_bytes_t Key;
rd_kafkap_bytes_t Value;
int64_t HeaderCnt;
} hdr;
rd_kafka_op_t *rko;
rd_kafka_msg_t *rkm;
/* Only log decoding errors if protocol debugging enabled. */
int log_decode_errors = (rkbuf->rkbuf_rkb->rkb_rk->rk_conf.debug &
RD_KAFKA_DBG_PROTOCOL) ? LOG_DEBUG : 0;
size_t message_end;
rd_kafka_buf_read_varint(rkbuf, &hdr.Length);
message_end = rd_slice_offset(&rkbuf->rkbuf_reader)+(size_t)hdr.Length;
rd_kafka_buf_read_varint(rkbuf, &hdr.MsgAttributes);
rd_kafka_buf_read_varint(rkbuf, &hdr.TimestampDelta);
rd_kafka_buf_read_varint(rkbuf, &hdr.OffsetDelta);
hdr.Offset = msetr->msetr_v2_hdr->BaseOffset + hdr.OffsetDelta;
/* Skip message if outdated */
if (hdr.Offset < rktp->rktp_offsets.fetch_offset) {
rd_rkb_dbg(msetr->msetr_rkb, MSG, "MSG",
"Skip offset %"PRId64" < fetch_offset %"PRId64,
hdr.Offset, rktp->rktp_offsets.fetch_offset);
rd_kafka_buf_skip_to(rkbuf, message_end);
return RD_KAFKA_RESP_ERR_NO_ERROR; /* Continue with next msg */
}
rd_kafka_buf_read_bytes_varint(rkbuf, &hdr.Key);
rd_kafka_buf_read_bytes_varint(rkbuf, &hdr.Value);
/* Ignore headers for now */
rd_kafka_buf_skip_to(rkbuf, message_end);
/* Create op/message container for message. */
rko = rd_kafka_op_new_fetch_msg(&rkm,
rktp, msetr->msetr_tver->version, rkbuf,
hdr.Offset,
(size_t)RD_KAFKAP_BYTES_LEN(&hdr.Key),
RD_KAFKAP_BYTES_IS_NULL(&hdr.Key) ?
NULL : hdr.Key.data,
(size_t)RD_KAFKAP_BYTES_LEN(&hdr.Value),
RD_KAFKAP_BYTES_IS_NULL(&hdr.Value) ?
NULL : hdr.Value.data);
/* Set timestamp.
*
* When broker assigns the timestamps (LOG_APPEND_TIME) it will
* assign the same timestamp for all messages in a MessageSet
* using MaxTimestamp.
*/
if ((msetr->msetr_v2_hdr->Attributes &
RD_KAFKA_MSG_ATTR_LOG_APPEND_TIME) ||
(hdr.MsgAttributes & RD_KAFKA_MSG_ATTR_LOG_APPEND_TIME)) {
rkm->rkm_tstype = RD_KAFKA_TIMESTAMP_LOG_APPEND_TIME;
rkm->rkm_timestamp = msetr->msetr_v2_hdr->MaxTimestamp;
} else {
rkm->rkm_tstype = RD_KAFKA_TIMESTAMP_CREATE_TIME;
rkm->rkm_timestamp =
msetr->msetr_v2_hdr->BaseTimestamp + hdr.TimestampDelta;
}
/* Enqueue message on temporary queue */
rd_kafka_q_enq(&msetr->msetr_rkq, rko);
msetr->msetr_msgcnt++;
return RD_KAFKA_RESP_ERR_NO_ERROR;
err_parse:
/* Count all parse errors as partial message errors. */
rd_atomic64_add(&msetr->msetr_rkb->rkb_c.rx_partial, 1);
return rkbuf->rkbuf_err;
}
rd_kafka_msgset_reader (rd_kafka_msgset_reader_t *msetr) {
rd_kafka_buf_t *rkbuf = msetr->msetr_rkbuf;
rd_kafka_toppar_t *rktp = msetr->msetr_rktp;
rd_kafka_resp_err_t (*reader[]) (rd_kafka_msgset_reader_t *) = {
/* Indexed by MsgVersion/MagicByte, pointing to
* a Msg(Set)Version reader */
[0] = rd_kafka_msgset_reader_msg_v0_1,
[1] = rd_kafka_msgset_reader_msg_v0_1,
[2] = rd_kafka_msgset_reader_v2
};
rd_kafka_resp_err_t err;
/* Only log decoding errors if protocol debugging enabled. */
int log_decode_errors = (rkbuf->rkbuf_rkb->rkb_rk->rk_conf.debug &
RD_KAFKA_DBG_PROTOCOL) ? LOG_DEBUG : 0;
int8_t MagicByte;
size_t read_offset = rd_slice_offset(&rkbuf->rkbuf_reader);
/* We dont know the MsgVersion at this point, peek where the
* MagicByte resides both in MsgVersion v0..1 and v2 to
* know which MessageSet reader to use. */
rd_kafka_buf_peek_i8(rkbuf, read_offset+8+4+4, &MagicByte);
if (unlikely(MagicByte < 0 || MagicByte > 2)) {
int64_t Offset; /* For error logging */
rd_kafka_buf_peek_i64(rkbuf, read_offset+0, &Offset);
rd_rkb_dbg(msetr->msetr_rkb,
MSG | RD_KAFKA_DBG_PROTOCOL | RD_KAFKA_DBG_FETCH,
"MAGICBYTE",
"%s [%"PRId32"]: "
"Unsupported Message(Set) MagicByte %d at "
/**
* @brief Decompress MessageSet, pass the uncompressed MessageSet to
* the MessageSet reader.
*/
static rd_kafka_resp_err_t
rd_kafka_msgset_reader_decompress (rd_kafka_msgset_reader_t *msetr,
int MsgVersion, int Attributes,
int64_t Timestamp, int64_t Offset,
const void *compressed,
size_t compressed_size) {
struct iovec iov = { .iov_base = NULL, .iov_len = 0 };
rd_kafka_toppar_t *rktp = msetr->msetr_rktp;
int codec = Attributes & RD_KAFKA_MSG_ATTR_COMPRESSION_MASK;
rd_kafka_resp_err_t err = RD_KAFKA_RESP_ERR_NO_ERROR;
rd_kafka_buf_t *rkbufz;
switch (codec)
{
#if WITH_ZLIB
case RD_KAFKA_COMPRESSION_GZIP:
{
uint64_t outlenx = 0;
/* Decompress Message payload */
iov.iov_base = rd_gz_decompress(compressed, (int)compressed_size,
&outlenx);
if (unlikely(!iov.iov_base)) {
rd_rkb_dbg(msetr->msetr_rkb, MSG, "GZIP",
"Failed to decompress Gzip "
"message at offset %"PRId64
" of %"PRIusz" bytes: "
"ignoring message",
Offset, compressed_size);
err = RD_KAFKA_RESP_ERR__BAD_COMPRESSION;
goto err;
}
iov.iov_len = (size_t)outlenx;
}
break;
#endif
#if WITH_SNAPPY
case RD_KAFKA_COMPRESSION_SNAPPY:
{
const char *inbuf = compressed;
size_t inlen = compressed_size;
int r;
static const unsigned char snappy_java_magic[] =
{ 0x82, 'S','N','A','P','P','Y', 0 };
static const size_t snappy_java_hdrlen = 8+4+4;
/* snappy-java adds its own header (SnappyCodec)
* which is not compatible with the official Snappy
* implementation.
* 8: magic, 4: version, 4: compatible
* followed by any number of chunks:
* 4: length
* ...: snappy-compressed data. */
if (likely(inlen > snappy_java_hdrlen + 4 &&
!memcmp(inbuf, snappy_java_magic, 8))) {
/* snappy-java framing */
char errstr[128];
inbuf = inbuf + snappy_java_hdrlen;
inlen -= snappy_java_hdrlen;
iov.iov_base = rd_kafka_snappy_java_uncompress(
inbuf, inlen,
&iov.iov_len,
errstr, sizeof(errstr));
if (unlikely(!iov.iov_base)) {
rd_rkb_dbg(msetr->msetr_rkb, MSG, "SNAPPY",
"%s [%"PRId32"]: "
"Snappy decompression for message "
"at offset %"PRId64" failed: %s: "
"ignoring message",
rktp->rktp_rkt->rkt_topic->str,
rktp->rktp_partition,
Offset, errstr);
err = RD_KAFKA_RESP_ERR__BAD_COMPRESSION;
goto err;
}
} else {
/* No framing */
/* Acquire uncompressed length */
if (unlikely(!rd_kafka_snappy_uncompressed_length(
inbuf, inlen, &iov.iov_len))) {
rd_rkb_dbg(msetr->msetr_rkb, MSG, "SNAPPY",
"Failed to get length of Snappy "
"compressed payload "
"for message at offset %"PRId64
" (%"PRIusz" bytes): "
"ignoring message",
Offset, inlen);
err = RD_KAFKA_RESP_ERR__BAD_COMPRESSION;
goto err;
}
/* Allocate output buffer for uncompressed data */
iov.iov_base = rd_malloc(iov.iov_len);
if (unlikely(!iov.iov_base)) {
rd_rkb_dbg(msetr->msetr_rkb, MSG, "SNAPPY",
"Failed to allocate Snappy "
"decompress buffer of size %"PRIusz
"for message at offset %"PRId64
" (%"PRIusz" bytes): %s: "
"ignoring message",
iov.iov_len, Offset, inlen,
rd_strerror(errno));
err = RD_KAFKA_RESP_ERR__CRIT_SYS_RESOURCE;
goto err;
}
/* Uncompress to outbuf */
if (unlikely((r = rd_kafka_snappy_uncompress(
inbuf, inlen, iov.iov_base)))) {
rd_rkb_dbg(msetr->msetr_rkb, MSG, "SNAPPY",
"Failed to decompress Snappy "
"payload for message at offset "
"%"PRId64" (%"PRIusz" bytes): %s: "
"ignoring message",
Offset, inlen,
rd_strerror(-r/*negative errno*/));
rd_free(iov.iov_base);
err = RD_KAFKA_RESP_ERR__BAD_COMPRESSION;
goto err;
}
}
}
break;
#endif
case RD_KAFKA_COMPRESSION_LZ4:
{
err = rd_kafka_lz4_decompress(msetr->msetr_rkb,
/* Proper HC? */
MsgVersion >= 1 ? 1 : 0,
Offset,
/* @warning Will modify compressed
* if no proper HC */
(char *)compressed,
compressed_size,
&iov.iov_base, &iov.iov_len);
if (err)
goto err;
}
break;
default:
rd_rkb_dbg(msetr->msetr_rkb, MSG, "CODEC",
"%s [%"PRId32"]: Message at offset %"PRId64
" with unsupported "
"compression codec 0x%x: message ignored",
rktp->rktp_rkt->rkt_topic->str,
rktp->rktp_partition,
Offset, (int)codec);
err = RD_KAFKA_RESP_ERR__NOT_IMPLEMENTED;
goto err;
}
rd_assert(iov.iov_base);
/*
* Decompression successful
*/
/* Create a new buffer pointing to the uncompressed
* allocated buffer (outbuf) and let messages keep a reference to
* this new buffer. */
rkbufz = rd_kafka_buf_new_shadow(iov.iov_base, iov.iov_len, rd_free);
rkbufz->rkbuf_rkb = msetr->msetr_rkbuf->rkbuf_rkb;
rd_kafka_broker_keep(rkbufz->rkbuf_rkb);
/* In MsgVersion v0..1 the decompressed data contains
* an inner MessageSet, pass it to a new MessageSet reader.
*
* For MsgVersion v2 the decompressed data are the list of messages.
*/
if (MsgVersion <= 1) {
/* Pass decompressed data (inner Messageset)
* to new instance of the MessageSet parser. */
rd_kafka_msgset_reader_t inner_msetr;
rd_kafka_msgset_reader_init(&inner_msetr,
rkbufz,
msetr->msetr_rktp,
msetr->msetr_tver,
&msetr->msetr_rkq);
if (MsgVersion == 1) {
/* postproc() will convert relative to
* absolute offsets */
inner_msetr.msetr_relative_offsets = 1;
inner_msetr.msetr_outer.offset = Offset;
/* Apply single LogAppendTime timestamp for
* all messages. */
if (Attributes & RD_KAFKA_MSG_ATTR_LOG_APPEND_TIME) {
inner_msetr.msetr_outer.tstype =
RD_KAFKA_TIMESTAMP_LOG_APPEND_TIME;
inner_msetr.msetr_outer.timestamp = Timestamp;
}
}
/* Parse the inner MessageSet */
err = rd_kafka_msgset_reader_run(&inner_msetr);
} else {
/* MsgVersion 2 */
rd_kafka_buf_t *orig_rkbuf = msetr->msetr_rkbuf;
/* Temporarily replace read buffer with uncompressed buffer */
msetr->msetr_rkbuf = rkbufz;
/* Read messages */
err = rd_kafka_msgset_reader_msgs_v2(msetr);
/* Restore original buffer */
msetr->msetr_rkbuf = orig_rkbuf;
}
/* Loose our refcnt of the uncompressed rkbuf.
* Individual messages/rko's will have their own reference. */
rd_kafka_buf_destroy(rkbufz);
return err;
err:
/* Enqueue error messsage:
* Create op and push on temporary queue. */
rd_kafka_q_op_err(&msetr->msetr_rkq, RD_KAFKA_OP_CONSUMER_ERR,
err, msetr->msetr_tver->version, rktp, Offset,
"Decompression (codec 0x%x) of message at %"PRIu64
" of %"PRIu64" bytes failed: %s",
codec, Offset, compressed_size, rd_kafka_err2str(err));
return err;
}
/**
* @brief Message parser for MsgVersion v0..1
*
* @returns RD_KAFKA_RESP_ERR_NO_ERROR on success or on single-message errors,
* or any other error code when the MessageSet parser should stop
* parsing (such as for partial Messages).
*/
static rd_kafka_resp_err_t
rd_kafka_msgset_reader_msg_v0_1 (rd_kafka_msgset_reader_t *msetr) {
rd_kafka_buf_t *rkbuf = msetr->msetr_rkbuf;
rd_kafka_toppar_t *rktp = msetr->msetr_rktp;
rd_kafka_broker_t *rkb = msetr->msetr_rkb;
struct {
int64_t Offset; /* MessageSet header */
int32_t MessageSize; /* MessageSet header */
uint32_t Crc;
int8_t MagicByte; /* MsgVersion */
int8_t Attributes;
int64_t Timestamp; /* v1 */
} hdr; /* Message header */
rd_kafkap_bytes_t Key;
rd_kafkap_bytes_t Value;
int32_t Value_len;
rd_kafka_op_t *rko;
size_t hdrsize = 6; /* Header size following MessageSize */
rd_slice_t crc_slice;
rd_kafka_msg_t *rkm;
int relative_offsets = 0;
const char *reloff_str = "";
/* Only log decoding errors if protocol debugging enabled. */
int log_decode_errors = (rkbuf->rkbuf_rkb->rkb_rk->rk_conf.debug &
RD_KAFKA_DBG_PROTOCOL) ? LOG_DEBUG : 0;
size_t message_end;
rd_kafka_buf_read_i64(rkbuf, &hdr.Offset);
rd_kafka_buf_read_i32(rkbuf, &hdr.MessageSize);
message_end = rd_slice_offset(&rkbuf->rkbuf_reader) + hdr.MessageSize;
rd_kafka_buf_read_i32(rkbuf, &hdr.Crc);
if (!rd_slice_narrow_copy_relative(&rkbuf->rkbuf_reader, &crc_slice,
hdr.MessageSize - 4))
rd_kafka_buf_check_len(rkbuf, hdr.MessageSize - 4);
rd_kafka_buf_read_i8(rkbuf, &hdr.MagicByte);
rd_kafka_buf_read_i8(rkbuf, &hdr.Attributes);
if (hdr.MagicByte == 1) { /* MsgVersion */
rd_kafka_buf_read_i64(rkbuf, &hdr.Timestamp);
hdrsize += 8;
/* MsgVersion 1 has relative offsets for compressed MessageSets*/
if (!(hdr.Attributes & RD_KAFKA_MSG_ATTR_COMPRESSION_MASK) &&
msetr->msetr_relative_offsets) {
relative_offsets = 1;
reloff_str = "relative ";
}
} else
hdr.Timestamp = 0;
/* Verify MessageSize */
if (unlikely(hdr.MessageSize < (ssize_t)hdrsize))
rd_kafka_buf_parse_fail(rkbuf,
"Message at %soffset %"PRId64
" MessageSize %"PRId32
" < hdrsize %"PRIusz,
reloff_str,
hdr.Offset, hdr.MessageSize, hdrsize);
/* Early check for partial messages */
rd_kafka_buf_check_len(rkbuf, hdr.MessageSize - hdrsize);
if (rkb->rkb_rk->rk_conf.check_crcs) {
/* Verify CRC32 if desired. */
uint32_t calc_crc;
calc_crc = rd_slice_crc32(&crc_slice);
rd_dassert(rd_slice_remains(&crc_slice) == 0);
if (unlikely(hdr.Crc != calc_crc)) {
/* Propagate CRC error to application and
* continue with next message. */
rd_kafka_q_op_err(&msetr->msetr_rkq,
RD_KAFKA_OP_CONSUMER_ERR,
RD_KAFKA_RESP_ERR__BAD_MSG,
msetr->msetr_tver->version,
rktp,
hdr.Offset,
"Message at %soffset %"PRId64
" (%"PRId32" bytes) "
"failed CRC32 check "
"(original 0x%"PRIx32" != "
"calculated 0x%"PRIx32")",
reloff_str, hdr.Offset,
hdr.MessageSize, hdr.Crc, calc_crc);
rd_kafka_buf_skip_to(rkbuf, message_end);
rd_atomic64_add(&rkb->rkb_c.rx_err, 1);
/* Continue with next message */
return RD_KAFKA_RESP_ERR_NO_ERROR;
}
}
/* Extract key */
rd_kafka_buf_read_bytes(rkbuf, &Key);
/* Extract Value */
rd_kafka_buf_read_bytes(rkbuf, &Value);
Value_len = RD_KAFKAP_BYTES_LEN(&Value);
/* MessageSets may contain offsets earlier than we
* requested (compressed MessageSets in particular),
* drop the earlier messages.
* Note: the inner offset may only be trusted for
* absolute offsets. KIP-31 introduced
* ApiVersion 2 that maintains relative offsets
* of compressed messages and the base offset
* in the outer message is the offset of
* the *LAST* message in the MessageSet.
* This requires us to assign offsets
* after all messages have been read from
* the messageset, and it also means
* we cant perform this offset check here
* in that case. */
if (!relative_offsets &&
hdr.Offset < rktp->rktp_offsets.fetch_offset)
return RD_KAFKA_RESP_ERR_NO_ERROR; /* Continue with next msg */
/* Handle compressed MessageSet */
if (unlikely(hdr.Attributes & RD_KAFKA_MSG_ATTR_COMPRESSION_MASK))
return rd_kafka_msgset_reader_decompress(
msetr, hdr.MagicByte, hdr.Attributes, hdr.Timestamp,
hdr.Offset, Value.data, Value_len);
/* Pure uncompressed message, this is the innermost
* handler after all compression and cascaded
* MessageSets have been peeled off. */
/* Create op/message container for message. */
rko = rd_kafka_op_new_fetch_msg(&rkm, rktp, msetr->msetr_tver->version,
rkbuf,
hdr.Offset,
(size_t)RD_KAFKAP_BYTES_LEN(&Key),
RD_KAFKAP_BYTES_IS_NULL(&Key) ?
NULL : Key.data,
(size_t)RD_KAFKAP_BYTES_LEN(&Value),
RD_KAFKAP_BYTES_IS_NULL(&Value) ?
NULL : Value.data);
/* Assign message timestamp.
* If message was in a compressed MessageSet and the outer/wrapper
* Message.Attribute had a LOG_APPEND_TIME set, use the
* outer timestamp */
if (msetr->msetr_outer.tstype == RD_KAFKA_TIMESTAMP_LOG_APPEND_TIME) {
rkm->rkm_timestamp = msetr->msetr_outer.timestamp;
rkm->rkm_tstype = msetr->msetr_outer.tstype;
} else if (hdr.MagicByte >= 1 && hdr.Timestamp) {
rkm->rkm_timestamp = hdr.Timestamp;
if (hdr.Attributes & RD_KAFKA_MSG_ATTR_LOG_APPEND_TIME)
rkm->rkm_tstype = RD_KAFKA_TIMESTAMP_LOG_APPEND_TIME;
else
rkm->rkm_tstype = RD_KAFKA_TIMESTAMP_CREATE_TIME;
}
/* Enqueue message on temporary queue */
rd_kafka_q_enq(&msetr->msetr_rkq, rko);
msetr->msetr_msgcnt++;
return RD_KAFKA_RESP_ERR_NO_ERROR; /* Continue */
err_parse:
/* Count all parse errors as partial message errors. */
rd_atomic64_add(&msetr->msetr_rkb->rkb_c.rx_partial, 1);
return rkbuf->rkbuf_err;
}
/**
* @brief Message parser for MsgVersion v2
*/
static rd_kafka_resp_err_t
rd_kafka_msgset_reader_msg_v2 (rd_kafka_msgset_reader_t *msetr) {
rd_kafka_buf_t *rkbuf = msetr->msetr_rkbuf;
rd_kafka_toppar_t *rktp = msetr->msetr_rktp;
struct {
int64_t Length;
int8_t MsgAttributes;
int64_t TimestampDelta;
int64_t OffsetDelta;
int64_t Offset; /* Absolute offset */
rd_kafkap_bytes_t Key;
rd_kafkap_bytes_t Value;
rd_kafkap_bytes_t Headers;
} hdr;
rd_kafka_op_t *rko;
rd_kafka_msg_t *rkm;
/* Only log decoding errors if protocol debugging enabled. */
int log_decode_errors = (rkbuf->rkbuf_rkb->rkb_rk->rk_conf.debug &
RD_KAFKA_DBG_PROTOCOL) ? LOG_DEBUG : 0;
size_t message_end;
rd_kafka_buf_read_varint(rkbuf, &hdr.Length);
message_end = rd_slice_offset(&rkbuf->rkbuf_reader)+(size_t)hdr.Length;
rd_kafka_buf_read_i8(rkbuf, &hdr.MsgAttributes);
rd_kafka_buf_read_varint(rkbuf, &hdr.TimestampDelta);
rd_kafka_buf_read_varint(rkbuf, &hdr.OffsetDelta);
hdr.Offset = msetr->msetr_v2_hdr->BaseOffset + hdr.OffsetDelta;
/* Skip message if outdated */
if (hdr.Offset < rktp->rktp_offsets.fetch_offset) {
rd_rkb_dbg(msetr->msetr_rkb, MSG, "MSG",
"%s [%"PRId32"]: "
"Skip offset %"PRId64" < fetch_offset %"PRId64,
rktp->rktp_rkt->rkt_topic->str,
rktp->rktp_partition,
hdr.Offset, rktp->rktp_offsets.fetch_offset);
rd_kafka_buf_skip_to(rkbuf, message_end);
return RD_KAFKA_RESP_ERR_NO_ERROR; /* Continue with next msg */
}
rd_kafka_buf_read_bytes_varint(rkbuf, &hdr.Key);
rd_kafka_buf_read_bytes_varint(rkbuf, &hdr.Value);
/* We parse the Headers later, just store the size (possibly truncated)
* and pointer to the headers. */
hdr.Headers.len = (int32_t)(message_end -
rd_slice_offset(&rkbuf->rkbuf_reader));
rd_kafka_buf_read_ptr(rkbuf, &hdr.Headers.data, hdr.Headers.len);
/* Create op/message container for message. */
rko = rd_kafka_op_new_fetch_msg(&rkm,
rktp, msetr->msetr_tver->version, rkbuf,
hdr.Offset,
(size_t)RD_KAFKAP_BYTES_LEN(&hdr.Key),
RD_KAFKAP_BYTES_IS_NULL(&hdr.Key) ?
NULL : hdr.Key.data,
(size_t)RD_KAFKAP_BYTES_LEN(&hdr.Value),
RD_KAFKAP_BYTES_IS_NULL(&hdr.Value) ?
NULL : hdr.Value.data);
/* Store pointer to unparsed message headers, they will
* be parsed on the first access.
* This pointer points to the rkbuf payload.
* Note: can't perform struct copy here due to const fields (MSVC) */
rkm->rkm_u.consumer.binhdrs.len = hdr.Headers.len;
rkm->rkm_u.consumer.binhdrs.data = hdr.Headers.data;
/* Set timestamp.
*
* When broker assigns the timestamps (LOG_APPEND_TIME) it will
* assign the same timestamp for all messages in a MessageSet
* using MaxTimestamp.
*/
if ((msetr->msetr_v2_hdr->Attributes &
RD_KAFKA_MSG_ATTR_LOG_APPEND_TIME) ||
(hdr.MsgAttributes & RD_KAFKA_MSG_ATTR_LOG_APPEND_TIME)) {
rkm->rkm_tstype = RD_KAFKA_TIMESTAMP_LOG_APPEND_TIME;
rkm->rkm_timestamp = msetr->msetr_v2_hdr->MaxTimestamp;
} else {
rkm->rkm_tstype = RD_KAFKA_TIMESTAMP_CREATE_TIME;
rkm->rkm_timestamp =
msetr->msetr_v2_hdr->BaseTimestamp + hdr.TimestampDelta;
}
/* Enqueue message on temporary queue */
rd_kafka_q_enq(&msetr->msetr_rkq, rko);
msetr->msetr_msgcnt++;
msetr->msetr_msg_bytes += rkm->rkm_key_len + rkm->rkm_len;
return RD_KAFKA_RESP_ERR_NO_ERROR;
err_parse:
/* Count all parse errors as partial message errors. */
rd_atomic64_add(&msetr->msetr_rkb->rkb_c.rx_partial, 1);
return rkbuf->rkbuf_err;
}