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MINOR: cli: display failure reason on wait command

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wait CLI command can be used to wait until either a defined timeout or a
specific condition is reached. So far, srv-removable is the only event
supported. This is tested via srv_check_for_deletion().

This is implemented via srv_check_for_deletion(), which is
able to report a message describing the reason if the condition is
unmet.

Previously, wait return a generic string, to specify if the condition is
met, the timer has expired or an immediate error is encountered. In case
of srv-removable, it did not report the real reason why a server could
not be removed.

This patch improves wait command with srv-removable. It now displays the
last message returned by srv_check_for_deletion(), either on immediate
error or on timeout. This is implemented by using dynamic string output
with cli_dynmsg/dynerr() functions.
This commit is contained in:
Amaury Denoyelle 2025-08-19 17:20:51 +02:00
parent 04f05f1880
commit bce29bc7a4
1 changed files with 8 additions and 8 deletions
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16
src/cli.c
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@ -2163,7 +2163,7 @@ static int cli_io_handler_wait(struct appctx *appctx)
if (ctx->cond == CLI_WAIT_COND_SRV_UNUSED) {
/* check if the server in args[0]/args[1] can be released now */
ret = srv_check_for_deletion(ctx->args[0], ctx->args[1], NULL, NULL, NULL);
ret = srv_check_for_deletion(ctx->args[0], ctx->args[1], NULL, NULL, &ctx->msg);
if (ret < 0) {
/* unrecoverable failure */
@ -2215,23 +2215,23 @@ static int cli_io_handler_wait(struct appctx *appctx)
static void cli_release_wait(struct appctx *appctx)
{
struct cli_wait_ctx *ctx = appctx->svcctx;
const char *msg;
char *msg = NULL;
int i;
switch (ctx->error) {
case CLI_WAIT_ERR_EXP: msg = "Wait delay expired.\n"; break;
case CLI_WAIT_ERR_INTR: msg = "Interrupted.\n"; break;
case CLI_WAIT_ERR_FAIL: msg = ctx->msg ? ctx->msg : "Failed.\n"; break;
default: msg = "Done.\n"; break;
case CLI_WAIT_ERR_EXP: memprintf(&msg, "Wait delay expired. %s\n", ctx->msg); break;
case CLI_WAIT_ERR_INTR: memprintf(&msg, "Interrupted. %s\n", ctx->msg); break;
case CLI_WAIT_ERR_FAIL: memprintf(&msg, "Failed. %s\n", ctx->msg); break;
default: memprintf(&msg, "Done.\n"); break;
}
for (i = 0; i < sizeof(ctx->args) / sizeof(ctx->args[0]); i++)
ha_free(&ctx->args[i]);
if (ctx->error == CLI_WAIT_ERR_DONE)
cli_msg(appctx, LOG_INFO, msg);
cli_dynmsg(appctx, LOG_INFO, msg);
else
cli_err(appctx, msg);
cli_dynerr(appctx, msg);
}
/* parse the "expose-fd" argument on the bind lines */