Merge pull request #1622 from rabbitmq/erlang-otp-21-compatibility

Erlang/OTP 21 compatibility

Author: michaelklishin

scripts/rabbitmq-env

@@ -292,7 +292,7 @@ if [ "${RABBITMQ_DEV_ENV}" ]; then
                "enabled_plugins_file=\"~s\"~n"
                "mnesia_base=\"~s\"~n"
                "mnesia_dir=\"~s\"~n", [P, E, B, M]).' \
-            2>/dev/null | head -n 4) || :)
+            2>/dev/null | grep -E '^(plugins_dir|enabled_plugins_file|mnesia_base|mnesia_dir)=') || :)
         if [ "${plugins_dir}" -a \
              "$RABBITMQ_PLUGINS_DIR_source" != 'environment' ]; then
             RABBITMQ_PLUGINS_DIR="${plugins_dir}"

src/rabbit.erl

@@ -16,6 +16,10 @@
 
 -module(rabbit).
 
+%% Transitional step until we can require Erlang/OTP 21 and
+%% use the now recommended try/catch syntax for obtaining the stack trace.
+-compile(nowarn_deprecated_function).
+
 -behaviour(application).
 
 -export([start/0, boot/0, stop/0,

src/rabbit_channel.erl

@@ -16,6 +16,10 @@
 
 -module(rabbit_channel).
 
+%% Transitional step until we can require Erlang/OTP 21 and
+%% use the now recommended try/catch syntax for obtaining the stack trace.
+-compile(nowarn_deprecated_function).
+
 %% rabbit_channel processes represent an AMQP 0-9-1 channels.
 %%
 %% Connections parse protocol frames coming from clients and

src/rabbit_node_monitor.erl

@@ -16,6 +16,10 @@
 
 -module(rabbit_node_monitor).
 
+%% Transitional step until we can require Erlang/OTP 21 and
+%% use the now recommended try/catch syntax for obtaining the stack trace.
+-compile(nowarn_deprecated_function).
+
 -behaviour(gen_server).
 
 -export([start_link/0]).

src/rabbit_reader.erl

@@ -16,6 +16,10 @@
 
 -module(rabbit_reader).
 
+%% Transitional step until we can require Erlang/OTP 21 and
+%% use the now recommended try/catch syntax for obtaining the stack trace.
+-compile(nowarn_deprecated_function).
+
 %% This is an AMQP 0-9-1 connection implementation. If AMQP 1.0 plugin is enabled,
 %% this module passes control of incoming AMQP 1.0 connections to it.
 %%

src/rabbit_vhost_process.erl

@@ -30,6 +30,10 @@
 
 -module(rabbit_vhost_process).
 
+%% Transitional step until we can require Erlang/OTP 21 and
+%% use the now recommended try/catch syntax for obtaining the stack trace.
+-compile(nowarn_deprecated_function).
+
 -include("rabbit.hrl").
 
 -define(TICKTIME_RATIO, 4).