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Add collectable resultset buffer type

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The new type allows routers to send queries and get complete result sets
as a response. This allows the routers to easily send commands that create
result sets and which are parsed by the router.

Currently only the schemarouter benefits from this new capability as it
generates the database mappings by parsing the output of a SHOW DATABASES
query.
This commit is contained in:
Markus Mäkelä
2017-03-29 07:22:26 +03:00
parent 5c1c89c835
commit c2857b976a
3 changed files with 25 additions and 7 deletions
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4
include/maxscale/buffer.h
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@ -56,7 +56,8 @@ typedef enum
GWBUF_TYPE_RESPONSE_END = 0x02,
GWBUF_TYPE_SESCMD = 0x04,
GWBUF_TYPE_HTTP = 0x08,
GWBUF_TYPE_IGNORABLE = 0x10
GWBUF_TYPE_IGNORABLE = 0x10,
GWBUF_TYPE_COLLECT_RESULT = 0x20
} gwbuf_type_t;
#define GWBUF_IS_TYPE_UNDEFINED(b) (b->gwbuf_type == 0)
@ -64,6 +65,7 @@ typedef enum
#define GWBUF_IS_TYPE_RESPONSE_END(b) (b->gwbuf_type & GWBUF_TYPE_RESPONSE_END)
#define GWBUF_IS_TYPE_SESCMD(b) (b->gwbuf_type & GWBUF_TYPE_SESCMD)
#define GWBUF_IS_IGNORABLE(b) (b->gwbuf_type & GWBUF_TYPE_IGNORABLE)
#define GWBUF_SHOULD_COLLECT_RESULT(b) (b->gwbuf_type & GWBUF_TYPE_COLLECT_RESULT)
/**
* A structure to encapsulate the data in a form that the data itself can be