* [PATCH v4] iproto: report active connections number
@ 2019-02-27 14:37 Ilya Kosarev
2019-02-28 9:01 ` Vladimir Davydov
2019-02-28 10:28 ` [tarantool-patches] " Konstantin Osipov
0 siblings, 2 replies; 3+ messages in thread
From: Ilya Kosarev @ 2019-02-27 14:37 UTC (permalink / raw)
To: tarantool-patches; +Cc: georgy, vdavydov.dev, i.kosarev, Ilya Kosarev
Now there is new member in box.stat.net() called "CONNECTIONS"
which is a number of active iproto connections.
Closes #3905
---
https://github.com/tarantool/tarantool/tree/i.kosarev/gh-3905-report-connections-number
https://github.com/tarantool/tarantool/issues/3905
Changes in v4:
- CONNECTIONS counter doesn't have extra lua tables inside anymore
- refactoring
src/box/iproto.cc | 6 ++++++
src/box/iproto.h | 6 ++++++
src/box/lua/stat.c | 11 +++++++++++
test/box/stat_net.result | 37 +++++++++++++++++++++++++++++++++++++
test/box/stat_net.test.lua | 13 +++++++++++++
5 files changed, 73 insertions(+)
diff --git a/src/box/iproto.cc b/src/box/iproto.cc
index 863eb4f06..d6dafe155 100644
--- a/src/box/iproto.cc
+++ b/src/box/iproto.cc
@@ -2121,6 +2121,12 @@ iproto_mem_used(void)
return slab_cache_used(&net_cord.slabc) + slab_cache_used(&net_slabc);
}
+size_t
+iproto_connections_n(void)
+{
+ return mempool_count(&iproto_connection_pool);
+}
+
void
iproto_reset_stat(void)
{
diff --git a/src/box/iproto.h b/src/box/iproto.h
index 8f3607ffc..0d53d13ed 100644
--- a/src/box/iproto.h
+++ b/src/box/iproto.h
@@ -62,6 +62,12 @@ extern unsigned iproto_readahead;
size_t
iproto_mem_used(void);
+/**
+ * Return number of active iproto connections
+ */
+size_t
+iproto_connections_n(void);
+
/**
* Reset network statistics.
*/
diff --git a/src/box/lua/stat.c b/src/box/lua/stat.c
index 3fce81f61..f8b9b581e 100644
--- a/src/box/lua/stat.c
+++ b/src/box/lua/stat.c
@@ -52,6 +52,8 @@ extern struct rmean *rmean_error;
extern struct rmean *rmean_net;
extern struct rmean *rmean_tx_wal_bus;
+static const char *conn_n_name = "CONNECTIONS";
+
static void
fill_stat_item(struct lua_State *L, int rps, int64_t total)
{
@@ -140,6 +142,10 @@ static int
lbox_stat_net_index(struct lua_State *L)
{
luaL_checkstring(L, -1);
+ if (strcmp(conn_n_name, lua_tostring(L, -1)) == 0) {
+ lua_pushnumber(L, iproto_connections_n());
+ return 1;
+ }
return rmean_foreach(rmean_net, seek_stat_item, L);
}
@@ -148,6 +154,11 @@ lbox_stat_net_call(struct lua_State *L)
{
lua_newtable(L);
rmean_foreach(rmean_net, set_stat_item, L);
+
+ lua_pushstring(L, conn_n_name);
+ lua_pushnumber(L, iproto_connections_n());
+ lua_settable(L, -3);
+
return 1;
}
diff --git a/test/box/stat_net.result b/test/box/stat_net.result
index b3e3db11f..639a830d8 100644
--- a/test/box/stat_net.result
+++ b/test/box/stat_net.result
@@ -34,6 +34,15 @@ LISTEN = require('uri').parse(box.cfg.listen)
cn = remote.connect(LISTEN.host, LISTEN.service)
---
...
+cn1 = remote.connect(LISTEN.host, LISTEN.service)
+---
+...
+cn2 = remote.connect(LISTEN.host, LISTEN.service)
+---
+...
+cn3 = remote.connect(LISTEN.host, LISTEN.service)
+---
+...
cn.space.tweedledum:select() --small request
---
- []
@@ -46,8 +55,32 @@ box.stat.net.RECEIVED.total > 0
---
- true
...
+box.stat.net.CONNECTIONS == 4
+---
+- true
+...
-- box.stat.net.EVENTS.total > 0
-- box.stat.net.LOCKS.total > 0
+WAIT_COND_TIMEOUT = 10
+---
+...
+cn1:close()
+---
+...
+cn2:close()
+---
+...
+test_run:wait_cond(function() return box.stat.net.CONNECTIONS == 2 end, WAIT_COND_TIMEOUT)
+---
+- true
+...
+cn3:close()
+---
+...
+test_run:wait_cond(function() return box.stat.net.CONNECTIONS == 1 end, WAIT_COND_TIMEOUT)
+---
+- true
+...
-- reset
box.stat.reset()
---
@@ -60,6 +93,10 @@ box.stat.net.RECEIVED.total
---
- 0
...
+box.stat.net.CONNECTIONS
+---
+- 1
+...
space:drop() -- tweedledum
---
...
diff --git a/test/box/stat_net.test.lua b/test/box/stat_net.test.lua
index 808bb71e7..997376997 100644
--- a/test/box/stat_net.test.lua
+++ b/test/box/stat_net.test.lua
@@ -13,18 +13,31 @@ remote = require 'net.box'
LISTEN = require('uri').parse(box.cfg.listen)
cn = remote.connect(LISTEN.host, LISTEN.service)
+cn1 = remote.connect(LISTEN.host, LISTEN.service)
+cn2 = remote.connect(LISTEN.host, LISTEN.service)
+cn3 = remote.connect(LISTEN.host, LISTEN.service)
cn.space.tweedledum:select() --small request
box.stat.net.SENT.total > 0
box.stat.net.RECEIVED.total > 0
+box.stat.net.CONNECTIONS == 4
-- box.stat.net.EVENTS.total > 0
-- box.stat.net.LOCKS.total > 0
+WAIT_COND_TIMEOUT = 10
+
+cn1:close()
+cn2:close()
+test_run:wait_cond(function() return box.stat.net.CONNECTIONS == 2 end, WAIT_COND_TIMEOUT)
+cn3:close()
+test_run:wait_cond(function() return box.stat.net.CONNECTIONS == 1 end, WAIT_COND_TIMEOUT)
+
-- reset
box.stat.reset()
box.stat.net.SENT.total
box.stat.net.RECEIVED.total
+box.stat.net.CONNECTIONS
space:drop() -- tweedledum
cn:close()
--
2.17.1
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH v4] iproto: report active connections number
2019-02-27 14:37 [PATCH v4] iproto: report active connections number Ilya Kosarev
@ 2019-02-28 9:01 ` Vladimir Davydov
2019-02-28 10:28 ` [tarantool-patches] " Konstantin Osipov
1 sibling, 0 replies; 3+ messages in thread
From: Vladimir Davydov @ 2019-02-28 9:01 UTC (permalink / raw)
To: Ilya Kosarev; +Cc: tarantool-patches, georgy, i.kosarev
On Wed, Feb 27, 2019 at 05:37:57PM +0300, Ilya Kosarev wrote:
> Now there is new member in box.stat.net() called "CONNECTIONS"
> which is a number of active iproto connections.
Please see a few nitpicking comments below.
>
> Closes #3905
> ---
> https://github.com/tarantool/tarantool/tree/i.kosarev/gh-3905-report-connections-number
> https://github.com/tarantool/tarantool/issues/3905
>
> Changes in v4:
> - CONNECTIONS counter doesn't have extra lua tables inside anymore
> - refactoring
>
> src/box/iproto.cc | 6 ++++++
> src/box/iproto.h | 6 ++++++
> src/box/lua/stat.c | 11 +++++++++++
> test/box/stat_net.result | 37 +++++++++++++++++++++++++++++++++++++
> test/box/stat_net.test.lua | 13 +++++++++++++
> 5 files changed, 73 insertions(+)
>
> diff --git a/src/box/iproto.cc b/src/box/iproto.cc
> index 863eb4f06..d6dafe155 100644
> --- a/src/box/iproto.cc
> +++ b/src/box/iproto.cc
> @@ -2121,6 +2121,12 @@ iproto_mem_used(void)
> return slab_cache_used(&net_cord.slabc) + slab_cache_used(&net_slabc);
> }
>
> +size_t
> +iproto_connections_n(void)
We don't typically use _n in variable names. Please rename to
iproto_connection_count()
Note, no 's' after 'connection'.
> +{
> + return mempool_count(&iproto_connection_pool);
> +}
> +
> void
> iproto_reset_stat(void)
> {
> diff --git a/src/box/iproto.h b/src/box/iproto.h
> index 8f3607ffc..0d53d13ed 100644
> --- a/src/box/iproto.h
> +++ b/src/box/iproto.h
> @@ -62,6 +62,12 @@ extern unsigned iproto_readahead;
> size_t
> iproto_mem_used(void);
>
> +/**
> + * Return number of active iproto connections
/**
* Return the number of active iproto connections.
*/
Note the article and the dot at the end of the comment.
Kostja's fussy about comments purity :-)
> + */
> +size_t
> +iproto_connections_n(void);
> +
> /**
> * Reset network statistics.
> */
> diff --git a/src/box/lua/stat.c b/src/box/lua/stat.c
> index 3fce81f61..f8b9b581e 100644
> --- a/src/box/lua/stat.c
> +++ b/src/box/lua/stat.c
> @@ -52,6 +52,8 @@ extern struct rmean *rmean_error;
> extern struct rmean *rmean_net;
> extern struct rmean *rmean_tx_wal_bus;
>
> +static const char *conn_n_name = "CONNECTIONS";
> +
I don't think there's any point in introducing a variable for this
rather than simply using the string literal directly. There are only
a couple places where we need it, and we aren't going to change those.
> static void
> fill_stat_item(struct lua_State *L, int rps, int64_t total)
> {
> @@ -140,6 +142,10 @@ static int
> lbox_stat_net_index(struct lua_State *L)
> {
> luaL_checkstring(L, -1);
> + if (strcmp(conn_n_name, lua_tostring(L, -1)) == 0) {
> + lua_pushnumber(L, iproto_connections_n());
> + return 1;
> + }
> return rmean_foreach(rmean_net, seek_stat_item, L);
> }
>
> @@ -148,6 +154,11 @@ lbox_stat_net_call(struct lua_State *L)
> {
> lua_newtable(L);
> rmean_foreach(rmean_net, set_stat_item, L);
> +
> + lua_pushstring(L, conn_n_name);
> + lua_pushnumber(L, iproto_connections_n());
> + lua_settable(L, -3);
> +
> return 1;
> }
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [tarantool-patches] [PATCH v4] iproto: report active connections number
2019-02-27 14:37 [PATCH v4] iproto: report active connections number Ilya Kosarev
2019-02-28 9:01 ` Vladimir Davydov
@ 2019-02-28 10:28 ` Konstantin Osipov
1 sibling, 0 replies; 3+ messages in thread
From: Konstantin Osipov @ 2019-02-28 10:28 UTC (permalink / raw)
To: tarantool-patches; +Cc: georgy, vdavydov.dev, i.kosarev, Ilya Kosarev
* Ilya Kosarev <i.kosarev@tarantool.org> [19/02/27 17:38]:
> Now there is new member in box.stat.net() called "CONNECTIONS"
> which is a number of active iproto connections.
>
> Closes #3905
Please don't forget a docbot request.
--
Konstantin Osipov, Moscow, Russia, +7 903 626 22 32
http://tarantool.io - www.twitter.com/kostja_osipov
^ permalink raw reply [flat|nested] 3+ messages in thread
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2019-02-27 14:37 [PATCH v4] iproto: report active connections number Ilya Kosarev
2019-02-28 9:01 ` Vladimir Davydov
2019-02-28 10:28 ` [tarantool-patches] " Konstantin Osipov
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