riak_test/tests/riak_control.erl
2016-10-27 19:01:36 -07:00

275 lines
10 KiB
Erlang

%% -------------------------------------------------------------------
%%
%% Copyright (c) 2013 Basho Technologies, Inc.
%%
%% This file is provided to you under the Apache License,
%% Version 2.0 (the "License"); you may not use this file
%% except in compliance with the License. You may obtain
%% a copy of the License at
%%
%% http://www.apache.org/licenses/LICENSE-2.0
%%
%% Unless required by applicable law or agreed to in writing,
%% software distributed under the License is distributed on an
%% "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
%% KIND, either express or implied. See the License for the
%% specific language governing permissions and limitations
%% under the License.
%%
%% -------------------------------------------------------------------
%%
%% @doc Run Riak Control on all nodes, and verify that we can upgrade
%% from legacy and previous to current, while ensuring Riak Control
%% continues to operate and doesn't crash on any node.
-module(riak_control).
-behaviour(riak_test).
-export([confirm/0]).
-include_lib("eunit/include/eunit.hrl").
-define(RC_ENABLE_CFG, [{riak_control, [{enabled, true}, {auth, none}]}]).
%% @doc Verify that Riak Control operates predictably during an upgrade.
confirm() ->
verify_upgrade(legacy),
rt:setup_harness(ignored, ignored),
verify_upgrade(previous),
rt:setup_harness(ignored, ignored),
pass.
%% @doc Verify an upgrade succeeds with all nodes running control from
%% the specified `Vsn' to current.
verify_upgrade(Vsn) ->
lager:info("Verify upgrade from ~p to current.", [Vsn]),
lager:info("Building cluster."),
[Nodes] = rt:build_clusters([{3, Vsn, ?RC_ENABLE_CFG}]),
lager:info("Verifying all nodes are alive."),
verify_alive(Nodes),
lager:info("Upgrading each node and verifying Control."),
VersionedNodes = [{Vsn, Node} || Node <- Nodes],
lists:foldl(fun verify_upgrade_fold/2, VersionedNodes, VersionedNodes),
lager:info("Validate capability convergence."),
validate_capability(VersionedNodes),
ok.
%% @doc Verify upgrade fold function.
verify_upgrade_fold({FromVsn, Node}, VersionedNodes0) ->
lager:info("Upgrading ~p from ~p to current.", [Node, FromVsn]),
lager:info("Performing upgrade."),
rt:upgrade(Node, current),
rt:wait_for_service(Node, riak_kv),
%% Wait for Riak Control to start.
rt:wait_for_control(VersionedNodes0),
%% Wait for Riak Control polling cycle.
wait_for_control_cycle(Node),
lager:info("Versioned nodes is: ~p.", [VersionedNodes0]),
VersionedNodes = lists:keyreplace(Node, 2, VersionedNodes0, {current, Node}),
lager:info("Versioned nodes is now: ~p.", [VersionedNodes]),
lager:info("Verify that all nodes are still alive."),
verify_alive([VersionedNode || {_, VersionedNode} <- VersionedNodes]),
lager:info("Verify that control still works on all nodes."),
verify_control(VersionedNodes),
VersionedNodes.
verify_control({Vsn, Node}, VersionedNodes) ->
lager:info("Verifying control on node ~p vsn ~p.", [Node, Vsn]),
%% Verify node resource.
?assertMatch(ok,
rt:wait_until(
fun() ->
validate_nodes(Node, VersionedNodes, any)
end
)
),
?assertMatch(ok,
rt:wait_until(
fun() ->
validate_partitions({Vsn, Node}, VersionedNodes)
end
)
),
ok.
verify_control(VersionedNodes) ->
[verify_control(NodeVsn, VersionedNodes) || NodeVsn <- VersionedNodes].
%% @doc Verify a particular JSON resource responds.
verify_resource(Node0, Resource) ->
Node = rt:http_url(Node0),
Output = os:cmd(io_lib:format("curl -s -S ~s~p", [Node, Resource])),
lager:info("Verifying node ~p resource ~p.", [Node, Resource]),
mochijson2:decode(Output).
%% @doc Verify that riak_kv is still running on all nodes.
verify_alive(Nodes) ->
[rt:wait_for_service(Node, riak_kv) || Node <- Nodes].
%% @doc This section iterates over the JSON response of nodes, and
%% verifies that each node is reporting its status correctly based
%% on it's current Vsn.
validate_nodes(ControlNode, VersionedNodes, Status0) ->
{struct,
[{<<"nodes">>, ResponseNodes}]} = verify_resource(ControlNode, "/admin/nodes"),
MixedCluster = mixed_cluster(VersionedNodes),
lager:info("Mixed cluster: ~p.", [MixedCluster]),
Results = lists:map(fun({struct, Node}) ->
%% Parse JSON further.
BinaryName = proplists:get_value(<<"name">>, Node),
Status = proplists:get_value(<<"status">>, Node),
Name = list_to_existing_atom(binary_to_list(BinaryName)),
%% Find current Vsn of node we are validating, and the
%% vsn of the node running Riak Control that we've
%% queried.
{NodeVsn, _} = lists:keyfind(Name, 2, VersionedNodes),
{ControlVsn, _} = lists:keyfind(ControlNode, 2, VersionedNodes),
%% Determine what the correct status should be, or if
%% we've been told to test a specific status, use that.
case Status0 of
any ->
valid_status(MixedCluster, ControlVsn, NodeVsn, Status);
_ ->
Status0 =:= Status
end
end, ResponseNodes),
lists:all(fun(Result) -> Result end, Results).
%% @doc Determine if we're currently running mixed mode.
mixed_cluster(VersionedNodes) ->
length(lists:usort(
lists:map(fun({Vsn, _}) -> Vsn end, VersionedNodes))) =/= 1.
wait_for_control_cycle(Node) when is_atom(Node) ->
lager:info("Waiting for riak_control poll on node ~p.", [Node]),
{ok, CurrentVsn} = rpc:call(Node,
riak_control_session,
get_version,
[]),
ExpectedVsn = CurrentVsn + 1,
rt:wait_until(Node, fun(N) ->
{ok, Vsn} = rpc:call(N,
riak_control_session,
get_version,
[]),
Vsn =:= ExpectedVsn
end).
%% @doc Validate partitions response.
validate_partitions({ControlVsn, ControlNode}, VersionedNodes) ->
%% Verify partitions resource.
VersionBinary = rt:get_version(ControlVsn),
ResponsePartitions = case VersionBinary of
<<"riak_ee-2.", _/binary>> ->
{struct,
[{<<"partitions">>, NodePartitions},
{<<"default_n_val">>, _}]} = verify_resource(ControlNode, "/admin/partitions"),
NodePartitions;
<<"riak-2.", _/binary>> ->
{struct,
[{<<"partitions">>, NodePartitions},
{<<"default_n_val">>, _}]} = verify_resource(ControlNode, "/admin/partitions"),
NodePartitions;
<<"riak_ts", _/binary>> ->
{struct,
[{<<"partitions">>, NodePartitions},
{<<"default_n_val">>, _}]} = verify_resource(ControlNode, "/admin/partitions"),
NodePartitions;
_ ->
{struct,
[{<<"partitions">>, NodePartitions}]} = verify_resource(ControlNode, "/admin/partitions"),
NodePartitions
end,
%% The newest version of the partitions display can derive the
%% partition state without relying on data from rpc calls -- it can
%% use just the ring to do this. Don't test anything specific here
%% yet.
case VersionBinary of
<<"riak_ee-2.", _/binary>> ->
true;
<<"riak-2.", _/binary>> ->
true;
<<"riak_ts", _/binary>> ->
true;
_ ->
MixedCluster = mixed_cluster(VersionedNodes),
lager:info("Mixed cluster: ~p.", [MixedCluster]),
Results = lists:map(fun({struct, Partition}) ->
%% Parse JSON further.
BinaryName = proplists:get_value(<<"node">>, Partition),
Status = proplists:get_value(<<"status">>, Partition),
Name = list_to_existing_atom(binary_to_list(BinaryName)),
%% Find current Vsn of node we are validating, and the
%% vsn of the node running Riak Control that we've
%% queried.
{NodeVsn, _} = lists:keyfind(Name, 2, VersionedNodes),
valid_status(MixedCluster, ControlVsn, NodeVsn, Status)
end, ResponsePartitions),
lists:all(fun(Result) -> Result end, Results)
end.
%% @doc Validate status based on Vsn.
valid_status(false, current, current, <<"valid">>) ->
%% Fully upgraded cluster, already negotiated.
true;
valid_status(true, _, _, <<"valid">>) ->
%% Cross-version communication in mixed cluster.
true;
valid_status(MixedCluster, ControlVsn, NodeVsn, Status) ->
%% Default failure case.
lager:info("Invalid status: ~p ~p ~p ~p", [MixedCluster,
ControlVsn,
NodeVsn,
Status]),
false.
%% @doc Validate capability has converged.
validate_capability(VersionedNodes) ->
%% Wait for capability negotiation.
[rt:wait_until_capability(Node,
{riak_control, member_info_version},
v1) || {_, Node} <- VersionedNodes],
%% We can test any node here, so just choose the first.
[{_Vsn, Node}|_] = VersionedNodes,
lager:info("Verifying capability through ~p.", [Node]),
%% Wait the Riak Control converges.
lager:info("Waiting for riak_control to converge."),
rt:wait_until(Node, fun(N) ->
{ok, _, Status} = rpc:call(N,
riak_control_session,
get_status,
[]),
Status =:= valid
end),
%% Validate we are in the correct state, not the incompatible state,
%% which ensure the capability has negotiated correctly.
validate_nodes(Node, VersionedNodes, <<"valid">>).