mirror of https://github.com/yandex/odyssey.git
364 lines
11 KiB
C
364 lines
11 KiB
C
#ifndef SHAPITO_BE_WRITE_H
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#define SHAPITO_BE_WRITE_H
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/*
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* Shapito.
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*
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* Protocol-level PostgreSQL client library.
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*/
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SHAPITO_API static inline int
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shapito_be_write_error_as(shapito_stream_t *stream, char *severity, char *code,
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char *detail, int detail_len,
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char *hint, int hint_len,
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char *message, int len)
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{
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int size = 1 /* S */ + 6 +
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1 /* C */ + 6 +
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1 /* M */ + len + 1 +
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1 /* zero */;
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if (detail && detail_len > 0)
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size += 1 + /* D */ + detail_len + 1;
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if (hint && hint_len > 0)
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size += 1 + /* H */ + hint_len + 1;
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int rc = shapito_stream_ensure(stream, sizeof(shapito_header_t) + size);
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if (shapito_unlikely(rc == -1))
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return -1;
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shapito_stream_write8(stream, 'E');
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shapito_stream_write32(stream, sizeof(uint32_t) + size);
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shapito_stream_write8(stream, 'S');
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shapito_stream_write(stream, severity, 6);
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shapito_stream_write8(stream, 'C');
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shapito_stream_write(stream, code, 6);
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if (detail && detail_len > 0) {
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shapito_stream_write8(stream, 'D');
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shapito_stream_write(stream, detail, detail_len);
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shapito_stream_write8(stream, 0);
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}
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if (hint && hint_len > 0) {
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shapito_stream_write8(stream, 'H');
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shapito_stream_write(stream, hint, hint_len);
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shapito_stream_write8(stream, 0);
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}
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shapito_stream_write8(stream, 'M');
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shapito_stream_write(stream, message, len);
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shapito_stream_write8(stream, 0);
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shapito_stream_write8(stream, 0);
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return 0;
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}
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SHAPITO_API static inline int
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shapito_be_write_error(shapito_stream_t *stream, char *code, char *message, int len)
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{
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return shapito_be_write_error_as(stream, "ERROR", code, NULL, 0, NULL, 0, message, len);
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}
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SHAPITO_API static inline int
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shapito_be_write_error_fatal(shapito_stream_t *stream, char *code, char *message, int len)
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{
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return shapito_be_write_error_as(stream, "FATAL", code, NULL, 0, NULL, 0, message, len);
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}
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SHAPITO_API static inline int
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shapito_be_write_error_panic(shapito_stream_t *stream, char *code, char *message, int len)
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{
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return shapito_be_write_error_as(stream, "PANIC", code, NULL, 0, NULL, 0, message, len);
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}
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SHAPITO_API static inline int
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shapito_be_write_notice(shapito_stream_t *stream, char *message, int len)
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{
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int rc = shapito_stream_ensure(stream, sizeof(shapito_header_t) + len + 1);
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if (shapito_unlikely(rc == -1))
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return -1;
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shapito_stream_write8(stream, 'N');
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shapito_stream_write32(stream, sizeof(uint32_t) + len);
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shapito_stream_write(stream, message, len);
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shapito_stream_write8(stream, 0);
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return 0;
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}
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SHAPITO_API static inline int
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shapito_be_write_authentication_ok(shapito_stream_t *stream)
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{
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int rc = shapito_stream_ensure(stream, sizeof(shapito_header_t) + sizeof(uint32_t));
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if (shapito_unlikely(rc == -1))
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return -1;
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shapito_stream_write8(stream, 'R');
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shapito_stream_write32(stream, sizeof(uint32_t) + sizeof(uint32_t));
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shapito_stream_write32(stream, 0);
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return 0;
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}
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SHAPITO_API static inline int
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shapito_be_write_authentication_clear_text(shapito_stream_t *stream)
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{
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int rc = shapito_stream_ensure(stream, sizeof(shapito_header_t) + sizeof(uint32_t));
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if (shapito_unlikely(rc == -1))
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return -1;
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shapito_stream_write8(stream, 'R');
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shapito_stream_write32(stream, sizeof(uint32_t) + sizeof(uint32_t));
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shapito_stream_write32(stream, 3);
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return 0;
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}
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SHAPITO_API static inline int
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shapito_be_write_authentication_md5(shapito_stream_t *stream, char salt[4])
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{
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int rc = shapito_stream_ensure(stream, sizeof(shapito_header_t) + sizeof(uint32_t) + 4);
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if (shapito_unlikely(rc == -1))
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return -1;
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shapito_stream_write8(stream, 'R');
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shapito_stream_write32(stream, sizeof(uint32_t) + sizeof(uint32_t) + 4);
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shapito_stream_write32(stream, 5);
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shapito_stream_write(stream, salt, 4);
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return 0;
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}
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SHAPITO_API static inline int
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shapito_be_write_backend_key_data(shapito_stream_t *stream, uint32_t pid, uint32_t key)
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{
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int rc = shapito_stream_ensure(stream, sizeof(shapito_header_t) +
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sizeof(uint32_t) +
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sizeof(uint32_t));
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if (shapito_unlikely(rc == -1))
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return -1;
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shapito_stream_write8(stream, 'K');
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shapito_stream_write32(stream, sizeof(uint32_t) + sizeof(uint32_t) +
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sizeof(uint32_t));
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shapito_stream_write32(stream, pid);
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shapito_stream_write32(stream, key);
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return 0;
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}
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SHAPITO_API static inline int
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shapito_be_write_parameter_status(shapito_stream_t *stream, char *key, int key_len,
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char *value, int value_len)
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{
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int rc = shapito_stream_ensure(stream, sizeof(shapito_header_t) + key_len + value_len);
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if (shapito_unlikely(rc == -1))
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return -1;
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shapito_stream_write8(stream, 'S');
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shapito_stream_write32(stream, sizeof(uint32_t) + key_len + value_len);
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shapito_stream_write(stream, key, key_len);
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shapito_stream_write(stream, value, value_len);
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return 0;
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}
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SHAPITO_API static inline int
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shapito_be_write_ready(shapito_stream_t *stream, uint8_t status)
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{
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int rc = shapito_stream_ensure(stream, sizeof(shapito_header_t) + sizeof(uint8_t));
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if (shapito_unlikely(rc == -1))
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return -1;
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shapito_stream_write8(stream, 'Z');
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shapito_stream_write32(stream, sizeof(uint32_t) + sizeof(uint8_t));
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shapito_stream_write8(stream, status);
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return 0;
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}
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SHAPITO_API static inline int
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shapito_be_write_row_description(shapito_stream_t *stream)
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{
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int rc = shapito_stream_ensure(stream, sizeof(shapito_header_t) + sizeof(uint16_t));
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if (shapito_unlikely(rc == -1))
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return -1;
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int position = shapito_stream_used(stream);
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shapito_stream_write8(stream, 'T');
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shapito_stream_write32(stream, sizeof(uint32_t) + sizeof(uint16_t));
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shapito_stream_write16(stream, 0);
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return position;
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}
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SHAPITO_API static inline int
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shapito_be_write_row_description_add(shapito_stream_t *stream, int start,
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char *name, int name_len,
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int32_t table_id,
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int16_t attrnum,
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int32_t type_id,
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int16_t type_size,
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int32_t type_modifier,
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int32_t format_code)
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{
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int size = name_len + 1 +
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sizeof(uint32_t) /* table_id */+
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sizeof(uint16_t) /* attrnum */ +
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sizeof(uint32_t) /* type_id */ +
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sizeof(uint16_t) /* type_size */ +
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sizeof(uint32_t) /* type_modifier */ +
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sizeof(uint16_t) /* format_code */;
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int rc = shapito_stream_ensure(stream, size);
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if (shapito_unlikely(rc == -1))
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return -1;
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shapito_stream_write(stream, name, name_len);
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shapito_stream_write8(stream, 0);
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shapito_stream_write32(stream, table_id);
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shapito_stream_write16(stream, attrnum);
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shapito_stream_write32(stream, type_id);
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shapito_stream_write16(stream, type_size);
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shapito_stream_write32(stream, type_modifier);
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shapito_stream_write16(stream, format_code);
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shapito_header_t *header;
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header = (shapito_header_t*)(stream->start + start);
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uint32_t pos_size = sizeof(uint32_t) + sizeof(uint16_t);
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char *pos = (char*)&header->len;
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uint32_t total_size;
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uint16_t count;
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shapito_stream_read32(&total_size, &pos, &pos_size);
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shapito_stream_read16(&count, &pos, &pos_size);
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total_size += size;
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count++;
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shapito_stream_write32to((char*)&header->len, total_size);
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shapito_stream_write16to((char*)&header->len + sizeof(uint32_t), count);
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return 0;
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}
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SHAPITO_API static inline int
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shapito_be_write_row_descriptionf(shapito_stream_t *stream, char *fmt, ...)
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{
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int offset;
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offset = shapito_be_write_row_description(stream);
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if (shapito_unlikely(offset == -1))
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return -1;
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va_list args;
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va_start(args, fmt);
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while (*fmt) {
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char *name = va_arg(args, char*);
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int name_len = strlen(name);
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int rc;
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switch (*fmt) {
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case 's':
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rc = shapito_be_write_row_description_add(stream, offset, name, name_len,
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0, 0, 25 /* TEXTOID */, -1, 0, 0);
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break;
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case 'd':
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rc = shapito_be_write_row_description_add(stream, offset, name, name_len,
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0, 0, 23 /* INT4OID */, 4, 0, 0);
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break;
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case 'l':
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rc = shapito_be_write_row_description_add(stream, offset, name, name_len,
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0, 0, 20 /* INT8OID */, 8, 0, 0);
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break;
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default:
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va_end(args);
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return -1;
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}
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if (rc == -1)
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return -1;
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fmt++;
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}
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va_end(args);
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return 0;
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}
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SHAPITO_API static inline int
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shapito_be_write_data_row(shapito_stream_t *stream)
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{
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int rc = shapito_stream_ensure(stream, sizeof(shapito_header_t) + sizeof(uint16_t));
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if (shapito_unlikely(rc == -1))
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return -1;
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int position = shapito_stream_used(stream);
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shapito_stream_write8(stream, 'D');
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shapito_stream_write32(stream, sizeof(uint32_t) + sizeof(uint16_t));
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shapito_stream_write16(stream, 0);
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return position;
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}
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SHAPITO_API static inline int
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shapito_be_write_data_row_add(shapito_stream_t *stream, int start, char *data, int32_t len)
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{
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int is_null = len == -1;
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int size = sizeof(uint32_t) + (is_null ? 0 : len);
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int rc = shapito_stream_ensure(stream, size);
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if (shapito_unlikely(rc == -1))
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return -1;
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shapito_stream_write32(stream, len);
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if (! is_null)
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shapito_stream_write(stream, data, len);
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shapito_header_t *header;
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header = (shapito_header_t*)(stream->start + start);
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uint32_t pos_size = sizeof(uint32_t) + sizeof(uint16_t);
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char *pos = (char*)&header->len;
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uint32_t total_size;
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uint16_t count;
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shapito_stream_read32(&total_size, &pos, &pos_size);
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shapito_stream_read16(&count, &pos, &pos_size);
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total_size += size;
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count++;
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shapito_stream_write32to((char*)&header->len, total_size);
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shapito_stream_write16to((char*)&header->len + sizeof(uint32_t), count);
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return 0;
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}
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SHAPITO_API static inline int
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shapito_be_write_complete(shapito_stream_t *stream, char *message, int len)
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{
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int rc = shapito_stream_ensure(stream, sizeof(shapito_header_t) + len);
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if (shapito_unlikely(rc == -1))
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return -1;
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shapito_stream_write8(stream, 'C');
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shapito_stream_write32(stream, sizeof(uint32_t) + len);
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shapito_stream_write(stream, message, len);
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return 0;
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}
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SHAPITO_API static inline int
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shapito_be_write_empty_query(shapito_stream_t *stream)
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{
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int rc = shapito_stream_ensure(stream, sizeof(shapito_header_t));
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if (shapito_unlikely(rc == -1))
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return -1;
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shapito_stream_write8(stream, 'I');
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shapito_stream_write32(stream, sizeof(uint32_t));
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return 0;
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}
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SHAPITO_API static inline int
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shapito_be_write_parse_complete(shapito_stream_t *stream)
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{
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int rc = shapito_stream_ensure(stream, sizeof(shapito_header_t));
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if (shapito_unlikely(rc == -1))
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return -1;
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shapito_stream_write8(stream, '1');
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shapito_stream_write32(stream, sizeof(uint32_t));
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return 0;
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}
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SHAPITO_API static inline int
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shapito_be_write_bind_complete(shapito_stream_t *stream)
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{
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int rc = shapito_stream_ensure(stream, sizeof(shapito_header_t));
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if (shapito_unlikely(rc == -1))
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return -1;
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shapito_stream_write8(stream, '2');
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shapito_stream_write32(stream, sizeof(uint32_t));
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return 0;
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}
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SHAPITO_API static inline int
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shapito_be_write_portal_suspended(shapito_stream_t *stream)
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{
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int rc = shapito_stream_ensure(stream, sizeof(shapito_header_t));
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if (shapito_unlikely(rc == -1))
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return -1;
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shapito_stream_write8(stream, 's');
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shapito_stream_write32(stream, sizeof(uint32_t));
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return 0;
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}
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SHAPITO_API static inline int
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shapito_be_write_no_data(shapito_stream_t *stream)
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{
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int rc = shapito_stream_ensure(stream, sizeof(shapito_header_t));
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if (shapito_unlikely(rc == -1))
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return -1;
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shapito_stream_write8(stream, 'n');
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shapito_stream_write32(stream, sizeof(uint32_t));
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return 0;
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}
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#endif /* SHAPITO_BE_WRITE_H */
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