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%%%------------------------------------------------------------------- | ||
%%% @doc | ||
%%% Provides operational functions for inspecting running logplex. | ||
%%% Only for use in the shell. Do NOT call from other modules. | ||
%%% @end | ||
%%%------------------------------------------------------------------- | ||
-module(logplex_ops). | ||
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-export([version/0, | ||
git_commit/0]). | ||
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version() -> | ||
os:cmd("git branch 2> /dev/null | sed -e '/^[^*]/d'"). | ||
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git_commit() -> | ||
os:cmd("git log -1 --format=\"%H\""). | ||
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f(UpgradeNode). | ||
UpgradeNode = fun () -> | ||
case logplex_app:config(git_branch) of | ||
"v50" -> | ||
io:format(whereis(user), "at=upgrade_start cur_vsn=50~n", []); | ||
"v51" -> | ||
io:format(whereis(user), | ||
"at=upgrade type=retry cur_vsn=51 old_vsn=50~n", []); | ||
Else -> | ||
io:format(whereis(user), | ||
"at=upgrade_start old_vsn=~p abort=wrong_version", [tl(Else)]), | ||
erlang:error({wrong_version, Else}) | ||
end, | ||
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%% Stateless | ||
l(logplex_drain), | ||
l(logplex_channel), | ||
l(logplex_tail), | ||
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io:format(whereis(user), "at=upgrade_end cur_vsn=51~n", []), | ||
application:set_env(logplex, git_branch, "v51"), | ||
ok | ||
end. |
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f(NodeVersions). | ||
NodeVersions = fun () -> | ||
F = fun () -> | ||
{node(), logplex_app:config(git_branch), | ||
os:getenv("INSTANCE_NAME")} | ||
end, | ||
{Good, _} = rpc:multicall(erlang, apply, [F, [] ]), | ||
lists:keysort(2, Good) | ||
end. | ||
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f(NodesAt). | ||
NodesAt = fun (Vsn) -> | ||
[ N || {N, V, _} <- NodeVersions(), V =:= Vsn ] | ||
end. | ||
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f(RollingUpgrade). | ||
RollingUpgrade = fun (Nodes) -> | ||
lists:foldl(fun (N, {good, Upgraded}) -> | ||
case rpc:call(N, erlang, apply, [ UpgradeNode, [] ]) of | ||
ok -> | ||
{good, [N | Upgraded]}; | ||
Else -> | ||
{{bad, N, Else}, Upgraded} | ||
end; | ||
(N, {_, _} = Acc) -> Acc | ||
end, | ||
{good, []}, | ||
Nodes) | ||
end. | ||
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f(UpgradeNode). | ||
UpgradeNode = fun () -> | ||
case logplex_app:config(git_branch) of | ||
"v51" -> | ||
io:format(whereis(user), "at=upgrade_start cur_vsn=51~n", []); | ||
"v52" -> | ||
io:format(whereis(user), | ||
"at=upgrade type=retry cur_vsn=51 old_vsn=51~n", []); | ||
Else -> | ||
io:format(whereis(user), | ||
"at=upgrade_start old_vsn=~p abort=wrong_version", [tl(Else)]), | ||
erlang:error({wrong_version, Else}) | ||
end, | ||
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%% Stateless | ||
l(redo), | ||
l(logplex_redis_writer), | ||
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io:format(whereis(user), "at=upgrade_end cur_vsn=52~n", []), | ||
application:set_env(logplex, git_branch, "v52"), | ||
ok | ||
end. |
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f(NodeVersions). | ||
NodeVersions = fun () -> | ||
F = fun () -> | ||
{node(), logplex_app:config(git_branch), | ||
os:getenv("INSTANCE_NAME")} | ||
end, | ||
{Good, _} = rpc:multicall(erlang, apply, [F, [] ]), | ||
lists:keysort(2, Good) | ||
end. | ||
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f(NodesAt). | ||
NodesAt = fun (Vsn) -> | ||
[ N || {N, V, _} <- NodeVersions(), V =:= Vsn ] | ||
end. | ||
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f(RollingUpgrade). | ||
RollingUpgrade = fun (Nodes) -> | ||
lists:foldl(fun (N, {good, Upgraded}) -> | ||
case rpc:call(N, erlang, apply, [ UpgradeNode, [] ]) of | ||
ok -> | ||
{good, [N | Upgraded]}; | ||
Else -> | ||
{{bad, N, Else}, Upgraded} | ||
end; | ||
(N, {_, _} = Acc) -> Acc | ||
end, | ||
{good, []}, | ||
Nodes) | ||
end. | ||
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