Merge pull request #1686 from ferd/global-plugin-path-fix

Prevent plugin unloading from killing currently running command (soft-purge in-compile)

src/rebar_utils.erl

@@ -763,7 +763,13 @@ remove_from_code_path(Paths) ->
                                   ok;
                               {ok, Modules} ->
                                   application:unload(App),
-                                  [begin code:purge(M), code:delete(M) end || M <- Modules]
+                                  [case erlang:check_process_code(self(), M) of
+                                       false ->
+                                           code:purge(M), code:delete(M);
+                                       _ ->
+                                           ?DEBUG("~p can't purge ~p safely, doing a soft purge", [self(), M]),
+                                           code:soft_purge(M) andalso code:delete(M)
+                                   end || M <- Modules]
                           end,
                           code:del_path(Path)
                   end, lists:usort(Paths)).

systest/all_SUITE.erl

@@ -29,7 +29,7 @@ end_per_testcase(_Name, Config) ->
     Config.
 
 all() ->
-    [noop, resource_plugins, alias_clash].
+    [noop, resource_plugins, alias_clash, grisp_explode].
 
 %groups() ->
 %    [{plugins, [shuffle], []},
@@ -68,6 +68,17 @@ alias_clash(Config) ->
                        "because it already exists from module rebar_prv_alias_test")),
     ok.
 
+grisp_explode() ->
+    [{doc, "Don't force purge a plugin that runs the compile job itself"}].
+grisp_explode(Config) ->
+    %% When the purge handling is wrong, the run fails violently.
+    {error, {_,Output}} = rebar3("grisp deploy -n robot -v 0.1.0", Config),
+    ct:pal("Rebar3 Output:~n~s",[Output]),
+    ?assertNotEqual(nomatch,
+        re:run(Output, "No releases exist in the system for robot:0.1.0!")
+    ),
+    ok.
+
 %%%%%%%%%%%%%%%
 %%% Helpers %%%
 %%%%%%%%%%%%%%%

systest/all_SUITE_data/grisp_explode/rebar.config

@@ -0,0 +1,16 @@
+{deps, [grisp]}.
+
+{plugins, [{rebar3_grisp, "0.1.0"}]}.
+
+{erl_opts, [debug_info]}.
+
+{grisp, [
+    {otp_release, "19"},
+    {deploy, [
+        {destination, "/path/to/SD-card"}
+    ]}
+]}.
+
+{relx, [
+    {release, {mygrispproject, "0.1.0"}, [mygrispproject]}
+]}.

systest/all_SUITE_data/grisp_explode/rebar.lock

@@ -0,0 +1,8 @@
+{"1.1.0",
+[{<<"grisp">>,{pkg,<<"grisp">>,<<"0.1.1">>},0},
+ {<<"mapz">>,{pkg,<<"mapz">>,<<"0.3.0">>},1}]}.
+[
+{pkg_hash,[
+ {<<"grisp">>, <<"5A1318E7B1582D7C5B1E446D149A6F93428A380BCFE7D740E57E4F6B6CDB19DD">>},
+ {<<"mapz">>, <<"438D24746CE5A252101E00B2032EFDF7FC69EB32689D3B805DE5E6DD7F52614F">>}]}
+].

systest/all_SUITE_data/grisp_explode/src/mygrispproject.app.src

@@ -0,0 +1,17 @@
+{application, mygrispproject, [
+    {description, "A GRiSP application"},
+    {vsn, "0.1.0"},
+    {registered, []},
+    {mod, {mygrispproject, []}},
+    {applications, [
+        kernel,
+        stdlib,
+        grisp
+    ]},
+    {env,[]},
+    {modules, []},
+
+    {maintainers, []},
+    {licenses, ["Apache 2.0"]},
+    {links, []}
+]}.

systest/all_SUITE_data/grisp_explode/src/mygrispproject.erl

@@ -0,0 +1,15 @@
+% @doc mygrispproject public API.
+% @end
+-module(mygrispproject).
+
+-behavior(application).
+
+% Callbacks
+-export([start/2]).
+-export([stop/1]).
+
+%--- Callbacks -----------------------------------------------------------------
+
+start(_Type, _Args) -> mygrispproject_sup:start_link().
+
+stop(_State) -> ok.

systest/all_SUITE_data/grisp_explode/src/mygrispproject_sup.erl

@@ -0,0 +1,19 @@
+% @doc mygrispproject top level supervisor.
+% @end
+-module(mygrispproject_sup).
+
+-behavior(supervisor).
+
+% API
+-export([start_link/0]).
+
+% Callbacks
+-export([init/1]).
+
+%--- API -----------------------------------------------------------------------
+
+start_link() -> supervisor:start_link({local, ?MODULE}, ?MODULE, []).
+
+%--- Callbacks -----------------------------------------------------------------
+
+init([]) -> {ok, { {one_for_all, 0, 1}, []} }.