Execute hook when connection between the nodes is established or lost.
MFC after: 2 weeks Obtained from: Wheel Systems Sp. z o.o. http://www.wheelsystems.com
This commit is contained in:
Pawel Jakub Dawidek
parent
2be8fd75ff
commit
5b41e64486
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=211984
@ -28,7 +28,7 @@
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.\"
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.\" $FreeBSD$
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.\"
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.Dd August 29, 2010
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.Dd August 30, 2010
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.Dt HAST.CONF 5
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.Os
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.Sh NAME
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@ -212,6 +212,20 @@ Execute the given program on various HAST events.
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Below is the list of currently implemented events and arguments the given
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program is executed with:
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.Bl -tag -width ".Ic xxxx"
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.It Ic "<path> role <resource> <oldrole> <newrole>"
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.Pp
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Executed on both primary and secondary nodes when resource role is changed.
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.Pp
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.It Ic "<path> connect <resource>"
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.Pp
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Executed on both primary and secondary nodes when connection for the given
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resource between the nodes is established.
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.Pp
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.It Ic "<path> disconnect <resource>"
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.Pp
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Executed on both primary and secondary nodes when connection for the given
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resource between the nodes is lost.
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.Pp
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.It Ic "<path> syncstart <resource>"
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.Pp
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Executed on primary node when synchronization process of secondary node is
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@ -228,10 +242,6 @@ Executed on primary node when synchronization process of secondary node is
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interrupted, most likely due to secondary node outage or connection failure
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between the nodes.
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.Pp
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.It Ic "<path> role <resource> <oldrole> <newrole>"
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.Pp
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Executed on both primary and secondary nodes when resource role is changed.
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.Pp
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.It Ic "<path> split-brain <resource>"
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.Pp
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Executed on both primary and secondary nodes when split-brain condition is
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@ -672,6 +672,7 @@ init_remote(struct hast_resource *res, struct proto_conn **inp,
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res->hr_remotein = in;
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res->hr_remoteout = out;
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}
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hook_exec(res->hr_exec, "connect", res->hr_name, NULL);
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return (true);
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close:
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if (errmsg != NULL && strcmp(errmsg, "Split-brain condition!") == 0)
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@ -765,8 +766,6 @@ hastd_primary(struct hast_resource *res)
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pid_t pid;
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int error;
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gres = res;
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/*
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* Create communication channel between parent and child.
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*/
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@ -788,6 +787,8 @@ hastd_primary(struct hast_resource *res)
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return;
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}
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gres = res;
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(void)pidfile_close(pfh);
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hook_fini();
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@ -894,6 +895,8 @@ remote_close(struct hast_resource *res, int ncomp)
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* Stop synchronization if in-progress.
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*/
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sync_stop();
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hook_exec(res->hr_exec, "disconnect", res->hr_name, NULL);
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}
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/*
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@ -74,6 +74,8 @@ struct hio {
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TAILQ_ENTRY(hio) hio_next;
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};
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static struct hast_resource *gres;
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/*
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* Free list holds unused structures. When free list is empty, we have to wait
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* until some in-progress requests are freed.
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@ -360,6 +362,8 @@ hastd_secondary(struct hast_resource *res, struct nv *nvin)
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return;
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}
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gres = res;
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(void)pidfile_close(pfh);
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hook_fini();
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@ -378,6 +382,7 @@ hastd_secondary(struct hast_resource *res, struct nv *nvin)
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init_local(res);
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init_remote(res, nvin);
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init_environment();
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hook_exec(res->hr_exec, "connect", res->hr_name, NULL);
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error = pthread_create(&td, NULL, recv_thread, res);
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assert(error == 0);
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@ -501,6 +506,19 @@ requnpack(struct hast_resource *res, struct hio *hio)
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return (hio->hio_error);
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}
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static void
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secondary_exit(int exitcode, const char *fmt, ...)
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{
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va_list ap;
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assert(exitcode != EX_OK);
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va_start(ap, fmt);
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pjdlogv_errno(LOG_ERR, fmt, ap);
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va_end(ap);
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hook_exec(gres->hr_exec, "disconnect", gres->hr_name, NULL);
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exit(exitcode);
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}
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/*
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* Thread receives requests from the primary node.
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*/
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@ -515,7 +533,7 @@ recv_thread(void *arg)
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QUEUE_TAKE(free, hio);
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pjdlog_debug(2, "recv: (%p) Got request.", hio);
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if (hast_proto_recv_hdr(res->hr_remotein, &hio->hio_nv) < 0) {
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pjdlog_exit(EX_TEMPFAIL,
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secondary_exit(EX_TEMPFAIL,
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"Unable to receive request header");
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}
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if (requnpack(res, hio) != 0) {
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@ -537,7 +555,7 @@ recv_thread(void *arg)
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} else if (hio->hio_cmd == HIO_WRITE) {
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if (hast_proto_recv_data(res, res->hr_remotein,
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hio->hio_nv, hio->hio_data, MAXPHYS) < 0) {
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pjdlog_exit(EX_TEMPFAIL,
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secondary_exit(EX_TEMPFAIL,
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"Unable to receive reply data");
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}
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}
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@ -693,7 +711,7 @@ send_thread(void *arg)
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nv_add_int16(nvout, hio->hio_error, "error");
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if (hast_proto_send(res, res->hr_remoteout, nvout, data,
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length) < 0) {
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pjdlog_exit(EX_TEMPFAIL, "Unable to send reply.");
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secondary_exit(EX_TEMPFAIL, "Unable to send reply.");
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}
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nv_free(nvout);
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pjdlog_debug(2, "send: (%p) Moving request to the free queue.",
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