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MEDIUM: applet: Simplify a bit API to exchange data with applets

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Default .rcv_buf and .snd_buf functions that applets can use are now
specialized to manipulate raw buffers or HTX buffers.

Thus a TCP applet should use appctx_raw_rcv_buf() and appctx_raw_snd_buf()
while HTTP applet should use appctx_htx_rcv_buf() and appctx_htx_snd_buf().

Note that the appctx is now directly passed to these functions instead of
the SC.
This commit is contained in:
Christopher Faulet
2024-01-26 15:41:46 +01:00
parent 868205943c
commit ee53d8421f
6 changed files with 88 additions and 67 deletions
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4
include/haproxy/applet-t.h
View File

@@ -61,8 +61,8 @@ struct applet {
int (*init)(struct appctx *); /* callback to init resources, may be NULL.
expect 0 if ok, -1 if an error occurs. */
void (*fct)(struct appctx *); /* internal I/O handler, may never be NULL */
size_t (*rcv_buf)(struct stconn *sc, struct buffer *buf, size_t count, unsigned int flags); /* called from the upper layer to get data */
size_t (*snd_buf)(struct stconn *sc, struct buffer *buf, size_t count, unsigned int flags); /* Called from the upper layet to put data */
size_t (*rcv_buf)(struct appctx *appctx, struct buffer *buf, size_t count, unsigned int flags); /* called from the upper layer to get data */
size_t (*snd_buf)(struct appctx *appctx, struct buffer *buf, size_t count, unsigned int flags); /* Called from the upper layet to put data */
size_t (*fastfwd)(struct appctx *appctx, struct buffer *buf, size_t count, unsigned int flags); /* Callback to fast-forward data */
void (*release)(struct appctx *); /* callback to release resources, may be NULL */
unsigned int timeout; /* execution timeout. */

6
include/haproxy/applet.h
View File

@@ -49,8 +49,14 @@ int appctx_finalize_startup(struct appctx *appctx, struct proxy *px, struct buff
void appctx_free_on_early_error(struct appctx *appctx);
void appctx_free(struct appctx *appctx);
size_t appctx_htx_rcv_buf(struct appctx *appctx, struct buffer *buf, size_t count, unsigned int flags);
size_t appctx_raw_rcv_buf(struct appctx *appctx, struct buffer *buf, size_t count, unsigned int flags);
size_t appctx_rcv_buf(struct stconn *sc, struct buffer *buf, size_t count, unsigned int flags);
size_t appctx_htx_snd_buf(struct appctx *appctx, struct buffer *buf, size_t count, unsigned int flags);
size_t appctx_raw_snd_buf(struct appctx *appctx, struct buffer *buf, size_t count, unsigned int flags);
size_t appctx_snd_buf(struct stconn *sc, struct buffer *buf, size_t count, unsigned int flags);
int appctx_fastfwd(struct stconn *sc, unsigned int count, unsigned int flags);
static inline struct appctx *appctx_new_here(struct applet *applet, struct sedesc *sedesc)