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@ -6040,7 +6040,84 @@ calc_row_difference( |
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return(0); |
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} |
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#ifdef WITH_WSREP
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static |
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int |
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wsrep_calc_row_hash( |
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/*================*/ |
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byte* digest, /*!< in/out: md5 sum */ |
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const uchar* row, /*!< in: row in MySQL format */ |
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TABLE* table, /*!< in: table in MySQL data
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dictionary */ |
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row_prebuilt_t* prebuilt, /*!< in: InnoDB prebuilt struct */ |
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THD* thd) /*!< in: user thread */ |
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{ |
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Field* field; |
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enum_field_types field_mysql_type; |
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uint n_fields; |
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ulint len; |
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const byte* ptr; |
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ulint col_type; |
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uint i; |
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my_MD5Context ctx; |
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my_MD5Init (&ctx); |
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n_fields = table->s->fields; |
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for (i = 0; i < n_fields; i++) { |
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byte null_byte=0; |
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byte true_byte=1; |
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field = table->field[i]; |
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ptr = (const byte*) row + get_field_offset(table, field); |
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len = field->pack_length(); |
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field_mysql_type = field->type(); |
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col_type = prebuilt->table->cols[i].mtype; |
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switch (col_type) { |
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case DATA_BLOB: |
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ptr = row_mysql_read_blob_ref(&len, ptr, len); |
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break; |
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case DATA_VARCHAR: |
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case DATA_BINARY: |
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case DATA_VARMYSQL: |
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if (field_mysql_type == MYSQL_TYPE_VARCHAR) { |
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/* This is a >= 5.0.3 type true VARCHAR where
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the real payload data length is stored in |
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1 or 2 bytes */ |
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ptr = row_mysql_read_true_varchar( |
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&len, ptr, |
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(ulint) |
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(((Field_varstring*)field)->length_bytes)); |
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} |
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break; |
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default: |
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; |
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} |
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if (field->null_ptr && |
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field_in_record_is_null(table, field, (char*) row)) { |
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my_MD5Update (&ctx, &null_byte, 1); |
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} else { |
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my_MD5Update (&ctx, &true_byte, 1); |
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my_MD5Update (&ctx, ptr, len); |
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} |
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} |
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my_MD5Final (digest, &ctx); |
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return(0); |
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} |
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#endif /* WITH_WSREP */
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/**********************************************************************//**
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Updates a row given as a parameter to a new value. Note that we are given |
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whole rows, not just the fields which are updated: this incurs some |
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@ -7297,14 +7374,15 @@ ha_innobase::wsrep_append_keys( |
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uchar digest[16]; |
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int rcode; |
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MY_MD5_HASH(digest, (uchar *)record0, table->s->reclength); |
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wsrep_calc_row_hash(digest, record0, table, prebuilt, thd); |
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if ((rcode = wsrep_append_key(thd, trx, table_share, table, |
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(const char*) digest, 16, |
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shared))) { |
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DBUG_RETURN(rcode); |
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} |
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if (record1) { |
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MY_MD5_HASH(digest, (uchar *)record1, table->s->reclength); |
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wsrep_calc_row_hash(digest, record1, table, prebuilt, thd); |
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if ((rcode = wsrep_append_key(thd, trx, table_share, |
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table, |
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(const char*) digest, |
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@ -7312,6 +7390,7 @@ ha_innobase::wsrep_append_keys( |
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DBUG_RETURN(rcode); |
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} |
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} |
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DBUG_RETURN(0); |
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} |
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if (wsrep_protocol_version == 0) { |
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uint len; |
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Seppo Jaakola
13 years ago