r59 - trunk/varnish-cache/bin/varnishd
phk at projects.linpro.no
phk at projects.linpro.no
Fri Mar 17 14:41:32 CET 2006
Author: phk
Date: 2006-03-17 14:41:32 +0100 (Fri, 17 Mar 2006)
New Revision: 59
Modified:
trunk/varnish-cache/bin/varnishd/cache_main.c
trunk/varnish-cache/bin/varnishd/cli_event.c
trunk/varnish-cache/bin/varnishd/cli_event.h
trunk/varnish-cache/bin/varnishd/mgt.h
trunk/varnish-cache/bin/varnishd/mgt_child.c
trunk/varnish-cache/bin/varnishd/varnishd.c
Log:
Make it possible to suspend and resume a cli connection while we wait
for response from the child (or otherwise).
Add a generic "pass-through" handler for cli requests we just pass on
to the child.
Modified: trunk/varnish-cache/bin/varnishd/cache_main.c
===================================================================
--- trunk/varnish-cache/bin/varnishd/cache_main.c 2006-03-17 10:03:05 UTC (rev 58)
+++ trunk/varnish-cache/bin/varnishd/cache_main.c 2006-03-17 13:41:32 UTC (rev 59)
@@ -3,6 +3,7 @@
*/
#include <stdio.h>
+#include <unistd.h>
#include <assert.h>
#include <stdlib.h>
#include <sys/time.h>
@@ -43,6 +44,17 @@
/*--------------------------------------------------------------------*/
static void
+cli_func_url_query(struct cli *cli, char **av, void *priv __unused)
+{
+
+ cli_out(cli, "url <%s>", av[2]);
+ sleep(1);
+ cli_result(cli, CLIS_UNIMPL);
+}
+
+/*--------------------------------------------------------------------*/
+
+static void
cli_func_ping(struct cli *cli, char **av, void *priv __unused)
{
time_t t;
@@ -59,6 +71,7 @@
/*--------------------------------------------------------------------*/
static struct cli_proto cli_proto[] = {
+ { CLI_URL_QUERY, cli_func_url_query },
{ CLI_PING, cli_func_ping },
{ NULL }
};
Modified: trunk/varnish-cache/bin/varnishd/cli_event.c
===================================================================
--- trunk/varnish-cache/bin/varnishd/cli_event.c 2006-03-17 10:03:05 UTC (rev 58)
+++ trunk/varnish-cache/bin/varnishd/cli_event.c 2006-03-17 13:41:32 UTC (rev 59)
@@ -24,6 +24,29 @@
#include "cli_event.h"
void
+cli_encode_string(struct evbuffer *buf, char *b)
+{
+ char *p, *q;
+
+ evbuffer_add_printf(buf, "\"");
+ for (p = q = b; *p != '\0'; p++) {
+ if ((*p != '"' && *p != '\\' && isgraph(*p)) || *p == ' ')
+ continue;
+ if (p != q)
+ evbuffer_add(buf, q, p - q);
+ if (*p == '\n')
+ evbuffer_add_printf(buf, "\\n");
+ else
+ evbuffer_add_printf(buf, "\\x%02x", *p);
+ q = p + 1;
+ }
+ if (p != q)
+ evbuffer_add(buf, q, p - q);
+ evbuffer_add_printf(buf, "\"");
+}
+
+
+void
cli_out(struct cli *cli, const char *fmt, ...)
{
va_list ap;
@@ -51,7 +74,6 @@
static void
encode_output(struct cli *cli)
{
- char *p, *q;
if (cli->verbose) {
if (cli->result != CLIS_OK)
@@ -63,21 +85,9 @@
evbuffer_add_printf(cli->bev1->output, "OK\n");
return;
}
- evbuffer_add_printf(cli->bev1->output, "%d \"", cli->result);
- for (p = q = sbuf_data(cli->sb); *p != '\0'; p++) {
- if ((*p != '"' && *p != '\\' && isgraph(*p)) || *p == ' ')
- continue;
- if (p != q)
- evbuffer_add(cli->bev1->output, q, p - q);
- if (*p == '\n')
- evbuffer_add_printf(cli->bev1->output, "\\n");
- else
- evbuffer_add_printf(cli->bev1->output, "\\x%02x", *p);
- q = p + 1;
- }
- if (p != q)
- evbuffer_add(cli->bev1->output, q, p - q);
- evbuffer_add_printf(cli->bev1->output, "\"\n");
+ evbuffer_add_printf(cli->bev1->output, "%d ", cli->result);
+ cli_encode_string(cli->bev1->output, sbuf_data(cli->sb));
+ evbuffer_add_printf(cli->bev1->output, "\n");
}
static void
@@ -91,10 +101,12 @@
return;
sbuf_clear(cli->sb);
cli_dispatch(cli, cli->cli_proto, p);
- sbuf_finish(cli->sb);
- /* XXX: syslog results ? */
- encode_output(cli);
- bufferevent_enable(cli->bev1, EV_WRITE);
+ if (!cli->suspend) {
+ sbuf_finish(cli->sb);
+ /* XXX: syslog results ? */
+ encode_output(cli);
+ bufferevent_enable(cli->bev1, EV_WRITE);
+ }
}
static void
@@ -135,3 +147,23 @@
bufferevent_enable(cli->bev0, EV_READ);
return (cli);
}
+
+void
+cli_suspend(struct cli *cli)
+{
+
+ cli->suspend = 1;
+ bufferevent_disable(cli->bev0, EV_READ);
+}
+
+void
+cli_resume(struct cli *cli)
+{
+ sbuf_finish(cli->sb);
+ /* XXX: syslog results ? */
+ encode_output(cli);
+ bufferevent_enable(cli->bev1, EV_WRITE);
+ cli->suspend = 0;
+ bufferevent_enable(cli->bev0, EV_READ);
+}
+
Modified: trunk/varnish-cache/bin/varnishd/cli_event.h
===================================================================
--- trunk/varnish-cache/bin/varnishd/cli_event.h 2006-03-17 10:03:05 UTC (rev 58)
+++ trunk/varnish-cache/bin/varnishd/cli_event.h 2006-03-17 13:41:32 UTC (rev 59)
@@ -6,9 +6,12 @@
struct bufferevent *bev0, *bev1;
struct sbuf *sb;
unsigned verbose;
+ unsigned suspend;
enum cli_status_e result;
struct cli_proto *cli_proto;
};
struct cli *cli_setup(int fdr, int fdw, int ver, struct cli_proto *cli_proto);
-
+void cli_suspend(struct cli *cli);
+void cli_resume(struct cli *cli);
+void cli_encode_string(struct evbuffer *buf, char *b);
Modified: trunk/varnish-cache/bin/varnishd/mgt.h
===================================================================
--- trunk/varnish-cache/bin/varnishd/mgt.h 2006-03-17 10:03:05 UTC (rev 58)
+++ trunk/varnish-cache/bin/varnishd/mgt.h 2006-03-17 13:41:32 UTC (rev 59)
@@ -9,4 +9,4 @@
void mgt_sigchld(int, short, void *);
typedef void mgt_ccb_f(unsigned, const char *, void *);
-void mgt_child_request(mgt_ccb_f *, void *, const char *fmt, ...);
+void mgt_child_request(mgt_ccb_f *, void *, char **argv, const char *fmt, ...);
Modified: trunk/varnish-cache/bin/varnishd/mgt_child.c
===================================================================
--- trunk/varnish-cache/bin/varnishd/mgt_child.c 2006-03-17 10:03:05 UTC (rev 58)
+++ trunk/varnish-cache/bin/varnishd/mgt_child.c 2006-03-17 13:41:32 UTC (rev 59)
@@ -24,6 +24,7 @@
#include <libvarnish.h>
#include <cli.h>
+#include "cli_event.h" /* for cli_encode_string */
#include "heritage.h"
#include "mgt.h"
@@ -45,6 +46,7 @@
struct creq {
TAILQ_ENTRY(creq) list;
char *req;
+ char **argv;
mgt_ccb_f *func;
void *priv;
};
@@ -90,17 +92,23 @@
send_req(void)
{
struct creq *cr;
+ int u;
cr = TAILQ_FIRST(&creqhead);
if (cr == NULL)
return;
printf("Send Request <%s>\n", cr->req);
- evbuffer_add_printf(child_cli1->output, "%s\n", cr->req);
+ evbuffer_add_printf(child_cli1->output, "%s", cr->req);
+ for (u = 0; cr->argv != NULL && cr->argv[u] != NULL; u++) {
+ evbuffer_add_printf(child_cli1->output, " ");
+ cli_encode_string(child_cli1->output, cr->argv[u]);
+ }
+ evbuffer_add_printf(child_cli1->output, "\n");
bufferevent_enable(child_cli1, EV_WRITE);
}
void
-mgt_child_request(mgt_ccb_f *func, void *priv, const char *fmt, ...)
+mgt_child_request(mgt_ccb_f *func, void *priv, char **argv, const char *fmt, ...)
{
struct creq *cr;
va_list ap;
@@ -110,6 +118,7 @@
assert(cr != NULL);
cr->func = func;
cr->priv = priv;
+ cr->argv = argv;
va_start(ap, fmt);
vasprintf(&cr->req, fmt, ap);
va_end(ap);
@@ -175,7 +184,7 @@
printf("%s(%d, %d, %p)\n", __func__, a, b, c);
time(&t);
- mgt_child_request(child_pingpong_ccb, NULL, "ping %ld", t);
+ mgt_child_request(child_pingpong_ccb, NULL, NULL, "ping %ld", t);
if (1) {
tv.tv_sec = 3;
tv.tv_usec = 0;
Modified: trunk/varnish-cache/bin/varnishd/varnishd.c
===================================================================
--- trunk/varnish-cache/bin/varnishd/varnishd.c 2006-03-17 10:03:05 UTC (rev 58)
+++ trunk/varnish-cache/bin/varnishd/varnishd.c 2006-03-17 13:41:32 UTC (rev 59)
@@ -33,21 +33,26 @@
struct heritage heritage;
struct event_base *eb;
-/*--------------------------------------------------------------------*/
+/*--------------------------------------------------------------------
+ * Generic passthrough for CLI functions
+ */
void
-xxx_ccb(unsigned u, const char *r, void *priv)
+cli_passthrough_cb(unsigned u, const char *r, void *priv)
{
- printf("%s(%u, %s, %p)\n", __func__, u, r, priv);
+ struct cli *cli = priv;
+
+ cli_out(cli, "%s\n", r);
+ cli_result(cli, u);
+ cli_resume(cli);
}
-/*--------------------------------------------------------------------*/
-
static void
-cli_func_url_query(struct cli *cli, char **av __unused, void *priv __unused)
+cli_func_passthrough(struct cli *cli, char **av __unused, void *priv)
{
- mgt_child_request(xxx_ccb, NULL, "url.query %s", av[2]);
+ cli_suspend(cli);
+ mgt_child_request(cli_passthrough_cb, cli, &av[2], av[1]);
}
/*--------------------------------------------------------------------*/
@@ -94,18 +99,18 @@
static struct cli_proto cli_proto[] = {
/* URL manipulation */
- { CLI_URL_QUERY, cli_func_url_query, NULL },
- { CLI_URL_PURGE },
- { CLI_URL_STATUS },
+ { CLI_URL_QUERY, cli_func_passthrough, NULL },
+ { CLI_URL_PURGE, cli_func_passthrough, NULL },
+ { CLI_URL_STATUS, cli_func_passthrough, NULL },
{ CLI_CONFIG_LOAD },
{ CLI_CONFIG_INLINE },
{ CLI_CONFIG_UNLOAD },
{ CLI_CONFIG_LIST },
{ CLI_CONFIG_USE },
- { CLI_SERVER_FREEZE },
- { CLI_SERVER_THAW },
- { CLI_SERVER_SUSPEND },
- { CLI_SERVER_RESUME },
+ { CLI_SERVER_FREEZE, cli_func_passthrough, NULL },
+ { CLI_SERVER_THAW, cli_func_passthrough, NULL },
+ { CLI_SERVER_SUSPEND, cli_func_passthrough, NULL },
+ { CLI_SERVER_RESUME, cli_func_passthrough, NULL },
{ CLI_SERVER_STOP, cli_func_server_stop, NULL },
{ CLI_SERVER_START, cli_func_server_start, NULL },
{ CLI_SERVER_RESTART },
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