From: Vladislav Shpilevoy <v.shpilevoy@tarantool.org> To: Serge Petrenko <sergepetrenko@tarantool.org>, kostja.osipov@gmail.com, gorcunov@gmail.com Cc: tarantool-patches@dev.tarantool.org Subject: Re: [Tarantool-patches] [PATCH v2] replication: add box.info.replication_anon Date: Fri, 1 May 2020 21:56:09 +0200 [thread overview] Message-ID: <42b75006-21a7-40be-c4bd-e1e83e2c0aaf@tarantool.org> (raw) In-Reply-To: <20200424162855.25920-1-sergepetrenko@tarantool.org> Hi! Thanks for the patch! > Closes #4900 > > @TarantoolBot document > Title: add new field to box.info: replication_anon > > It is now possible to list all the anonymous replicas following the > instance with a call to `box.info.replication_anon()` > The output is similar to the one produced by `box.info.replication` with > an exception that anonymous replicas are indexed by their uuid strings > rather then server ids, since server ids have no meaning for anonymous > replicas. > > Note, that when you issue a plain `box.info.replication_anon`, the only > info returned is the number of anonymous replicas following the current > instance. In order to see the full stats, you have to call > `box.info.replication_anon()` . This is done to not overload the `box.info` > output with excess info, since there may be lots of anonymous replicas. Double whitespaces on this line and previous. Also see 2 nits about comments below. > diff --git a/src/box/lua/info.c b/src/box/lua/info.c > index a789f7822..e7318fcd1 100644 > --- a/src/box/lua/info.c > +++ b/src/box/lua/info.c > @@ -214,6 +214,54 @@ lbox_info_replication(struct lua_State *L) > return 1; > } > > +static int > +lbox_info_replication_anon_call(struct lua_State *L) > +{ > + lua_newtable(L); /* box.info.replication_anon */ > + > + /* Nice formatting */ > + lua_newtable(L); /* metatable */ 1. Better write comments on separate lines, use '.' in the end of sentences and capital letters when start them. > + lua_pushliteral(L, "mapping"); > + lua_setfield(L, -2, "__serialize"); > + lua_setmetatable(L, -2); > + > + replicaset_foreach(replica) { > + if (!replica->anon) > + continue; > + > + lua_pushstring(L, tt_uuid_str(&replica->uuid)); > + lbox_pushreplica(L, replica); > + > + lua_settable(L, -3); > + } > + > + return 1; > +} > + > +static int > +lbox_info_replication_anon(struct lua_State *L) > +{ > + /* > + * Make the .replication_anon field callable in order to > + * not flood the output with possibly lots of anonymous > + * replicas on box.info call. > + */ > + lua_newtable(L); > + > + lua_pushliteral(L, "count"); > + lua_pushinteger(L, replicaset.anon_count); > + lua_settable(L, -3); > + > + lua_newtable(L); /* metatable */ 2. Here too. > + > + lua_pushstring(L, "__call"); > + lua_pushcfunction(L, lbox_info_replication_anon_call); > + lua_settable(L, -3); > + > + lua_setmetatable(L, -2); > + return 1; > +}
next prev parent reply other threads:[~2020-05-01 19:56 UTC|newest] Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-04-24 16:28 Serge Petrenko 2020-04-24 16:39 ` Konstantin Osipov 2020-04-27 12:22 ` Serge Petrenko 2020-04-27 12:40 ` Konstantin Osipov 2020-05-01 19:56 ` Vladislav Shpilevoy [this message] 2020-05-07 11:17 ` Serge Petrenko 2020-05-10 19:52 ` Vladislav Shpilevoy 2020-05-15 14:16 ` Kirill Yukhin
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