From 8ff1e44cebf3aee09969a9324c04074ba87f10b9 Mon Sep 17 00:00:00 2001
From: Tristan Sloughter <t@crashfast.com>
Date: Sun, 14 Apr 2019 07:21:04 -0600
Subject: add dist name and cookie to ERL_FLAGS for nodetool (#712)

* remove deprecated hex field from .app.src

* start nodetool dist node in erl flags
---
 priv/templates/extended_bin | 20 +++++++++++++-------
 priv/templates/nodetool     | 15 +++++++++++----
 src/relx.app.src            | 18 ++++++++----------
 3 files changed, 32 insertions(+), 21 deletions(-)

diff --git a/priv/templates/extended_bin b/priv/templates/extended_bin
index cfeb859..a4cba4a 100755
--- a/priv/templates/extended_bin
+++ b/priv/templates/extended_bin
@@ -189,16 +189,22 @@ relx_gen_id() {
 relx_nodetool() {
     command="$1"; shift
 
+    # Generate a unique id used to allow multiple nodetool calls to the
+    # same node transparently
+    nodetool_id="maint$(relx_gen_id)-${NAME}"
+
     if [ -z "${START_EPMD}" ]; then
-        ERL_FLAGS="${ERL_FLAGS} ${MAYBE_DIST_ARGS}" "$ERTS_DIR/bin/escript" \
-                 "$ROOTDIR/bin/nodetool" "$NAME_TYPE" "$NAME" \
-                 -setcookie "$COOKIE" "$command" $@
+        ERL_FLAGS="${ERL_FLAGS} ${MAYBE_DIST_ARGS} ${NAME_TYPE} $nodetool_id -setcookie ${COOKIE}" \
+                 "$ERTS_DIR/bin/escript" \
+                 "$ROOTDIR/bin/nodetool" \
+                 "$NAME_TYPE" "$NAME" \
+                 "$command" $@
     else
-        ERL_FLAGS="${ERL_FLAGS} ${MAYBE_DIST_ARGS}" "$ERTS_DIR/bin/escript" \
-                 "$ROOTDIR/bin/nodetool" "$NAME_TYPE" "$NAME" \
-                 $START_EPMD -setcookie "$COOKIE" "$command" $@
+        ERL_FLAGS="${ERL_FLAGS} ${MAYBE_DIST_ARGS} ${NAME_TYPE} $nodetool_id -setcookie ${COOKIE}" \
+                 "$ERTS_DIR/bin/escript" \
+                 "$ROOTDIR/bin/nodetool" \
+                 $START_EPMD "$NAME_TYPE" "$NAME" "$command" $@
     fi
-
 }
 
 # Run an escript in the node's environment
diff --git a/priv/templates/nodetool b/priv/templates/nodetool
index 62fa02e..9e24f32 100644
--- a/priv/templates/nodetool
+++ b/priv/templates/nodetool
@@ -96,16 +96,23 @@ process_args(["-setcookie", Cookie | Rest], Acc, TargetNode, StartEpmd) ->
 process_args(["-start_epmd", StartEpmd | Rest], Acc, TargetNode, _StartEpmd) ->
     process_args(Rest, Acc, TargetNode, list_to_atom(StartEpmd));
 process_args(["-name", TargetName | Rest], Acc, _, StartEpmd) ->
-    ThisNode = append_node_suffix(TargetName, "_maint_"),
-    {ok, _} = net_kernel:start([ThisNode, longnames]),
+    maybe_start_node(TargetName, longnames),
     process_args(Rest, Acc, nodename(TargetName), StartEpmd);
 process_args(["-sname", TargetName | Rest], Acc, _, StartEpmd) ->
-    ThisNode = append_node_suffix(TargetName, "_maint_"),
-    {ok, _} = net_kernel:start([ThisNode, shortnames]),
+    maybe_start_node(TargetName, shortnames),
     process_args(Rest, Acc, nodename(TargetName), StartEpmd);
 process_args([Arg | Rest], Acc, Opts, StartEpmd) ->
     process_args(Rest, [Arg | Acc], Opts, StartEpmd).
 
+maybe_start_node(TargetName, Names) ->
+    case erlang:node() of
+        'nonode@nohost' ->
+            ThisNode = append_node_suffix(TargetName, "_maint_"),
+            {ok, _} = net_kernel:start([ThisNode, Names]);
+        _ ->
+            ok
+    end.
+
 start_epmd(true) ->
     [] = os:cmd("\"" ++ epmd_path() ++ "\" -daemon"),
     ok;
diff --git a/src/relx.app.src b/src/relx.app.src
index c8915d5..c845982 100644
--- a/src/relx.app.src
+++ b/src/relx.app.src
@@ -1,11 +1,9 @@
 {application,relx,
-             [{description,"Release assembler for Erlang/OTP Releases"},
-              {vsn,"git"},
-              {modules,[]},
-              {registered,[]},
-              {applications,[kernel,stdlib,getopt,erlware_commons,bbmustache,
-                             providers]},
-              {maintainers,["Eric Merritt","Tristan Sloughter",
-                            "Jordan Wilberding"]},
-              {licenses,["Apache"]},
-              {links,[{"Github","https://github.com/erlware/relx"}]}]}.
+ [{description,"Release assembler for Erlang/OTP Releases"},
+  {vsn,"git"},
+  {modules,[]},
+  {registered,[]},
+  {applications,[kernel,stdlib,getopt,erlware_commons,bbmustache,
+                 providers]},
+  {licenses,["Apache"]},
+  {links,[{"Github","https://github.com/erlware/relx"}]}]}.
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