Added telemetry application.

Signed-off-by: sreepuramsudheer <ssudheer@progress.com>

omnibus/files/server-ctl-cookbooks/infra-server/attributes/default.rb

@@ -893,6 +893,8 @@
 # Select whether data_collector affects overall status in _status endpoint
 default['private_chef']['data_collector']['health_check'] = true
 
+default['private_chef']['ctl_command'] = "#{ChefUtils::Dist::Server::SERVER_CTL}"
+default['private_chef']['running_filepath'] = "/etc/#{ChefUtils::Dist::Org::LEGACY_CONF_DIR}/#{ChefUtils::Dist::Server::SERVER}-running.json"
 ##
 # Compliance Profiles
 ##

omnibus/files/server-ctl-cookbooks/infra-server/templates/default/oc_erchef.config.erb

@@ -320,7 +320,13 @@
     },
 
     {metrics_module, folsom_metrics}
-]}
+    ]},
+
+    {chef_telemetry, [
+        {running_filepath, "<%= node['private_chef']['running_filepath'] %>"},
+        {ctl_command, "<%= node['private_chef']['ctl_command'] %>"}
+                ]
+    }
 
 <% if !node['private_chef']['opscode-erchef']['ssl_session_caching']['enabled'] -%>
     ,

src/oc_erchef/apps/chef_telemetry/.gitignore

@@ -0,0 +1,15 @@
+.eunit
+deps/
+ebin/
+ebin_dialyzer/
+TAGS
+.DS_Store
+doc/*.html
+*.beam
+/doc/edoc-info
+/doc/erlang.png
+/doc/stylesheet.css
+/deps.plt
+test/*.out
+.rebar
+log/

src/oc_erchef/apps/chef_telemetry/Makefile

@@ -0,0 +1,30 @@
+REBAR3_URL=https://s3.amazonaws.com/rebar3/rebar3
+
+# If there is a rebar in the current directory, use it
+ifeq ($(wildcard rebar3),rebar3)
+REBAR3 = $(CURDIR)/rebar3
+endif
+
+# Fallback to rebar on PATH
+REBAR3 ?= $(shell which rebar3)
+
+# And finally, prep to download rebar if all else fails
+ifeq ($(REBAR3),)
+REBAR3 = rebar3
+endif
+
+all: $(REBAR3)
+	@$(REBAR3) do clean, compile, eunit, dialyzer
+
+rel: all
+	@$(REBAR3) release
+
+distclean:
+	@rm -rf _build
+
+$(REBAR3):
+	curl -Lo rebar3 $(REBAR3_URL) || wget $(REBAR3_URL)
+	chmod a+x rebar3
+
+install: $(REBAR3) distclean
+	$(REBAR3) update

src/oc_erchef/apps/chef_telemetry/README.md

@@ -0,0 +1,3 @@
+# Telemetry
+
+Telemetry is an HTTP exporter of Chef Server node stats for external services.

src/oc_erchef/apps/chef_telemetry/rebar.config

@@ -0,0 +1,26 @@
+%% -*- mode: erlang -*-
+%% -*- tab-width: 4;erlang-indent-level: 4;indent-tabs-mode: nil -*-
+%% ex: ts=4 sw=4 ft=erlang et
+
+{deps,
+    [
+    %% lager has to come first since we use its parse transform
+    {lager, ".*",
+        {git, "https://github.com/erlang-lager/lager",                {branch, "master"}}}
+    ]
+}.
+
+{profiles, [{
+    test, [
+        {deps, [meck]},
+        {erl_opts, [export_all]}
+    ]
+}]}.
+
+{erl_opts, [
+    warnings_as_errors,
+    {parse_transform, lager_transform},
+    debug_info
+]}.
+
+{cover_enabled, true}.

src/oc_erchef/apps/chef_telemetry/src/chef_telemetry.app.src

@@ -0,0 +1,34 @@
+%% -*- erlang-indent-level: 4;indent-tabs-mode: nil; fill-column: 92 -*-
+%% ex: ts=4 sw=4 et
+%%
+%%
+%% Copyright 2016 Chef Software, Inc. All Rights Reserved.
+%%
+%% 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.
+%%
+
+{application, chef_telemetry, [
+    {description, "Chef Server Telemetry"},
+    {vsn, {cmd,"cat ../../VERSION | awk '{print $0}'"}},
+    {registered, []},
+    {applications, [
+        kernel,
+        stdlib,
+        lager,
+        chef_secrets,
+        opscoderl_httpc
+    ]},
+    {mod, {chef_telemetry_app, []}}
+]}.

src/oc_erchef/apps/chef_telemetry/src/chef_telemetry.erl

@@ -0,0 +1,34 @@
+%% -*- erlang-indent-level: 4;indent-tabs-mode: nil; fill-column: 92 -*-
+%% ex: ts=4 sw=4 et
+%%
+%%
+%% Copyright 2016 Chef Software, Inc. All Rights Reserved.
+%%
+%% 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.
+%%
+
+-module(chef_telemetry).
+-export([
+         is_enabled/0
+        ]).
+
+-spec is_enabled() -> boolean().
+is_enabled() ->
+    case envy:get(chef_telemetry, is_enabled, true, boolean) of
+        true ->
+            true;
+        _ ->
+            false
+    end.

src/oc_erchef/apps/chef_telemetry/src/chef_telemetry_app.erl

@@ -0,0 +1,34 @@
+%% -*- erlang-indent-level: 4;indent-tabs-mode: nil; fill-column: 92 -*-
+%% ex: ts=4 sw=4 et
+%%
+%% Copyright 2016 Chef Software, Inc. All Rights Reserved.
+%%
+%% 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.
+%%
+
+-module(chef_telemetry_app).
+
+-behaviour(application).
+
+%% API
+-export([start/2,
+         stop/1
+        ]).
+
+start(_StartType, _StartArgs) ->
+    chef_telemetry_sup:start_link().
+
+stop(_State) ->
+    ok.

src/oc_erchef/apps/chef_telemetry/src/chef_telemetry_sup.erl

@@ -0,0 +1,37 @@
+%% -*- erlang-indent-level: 4;indent-tabs-mode: nil; fill-column: 92 -*-
+%% ex: ts=4 sw=4 et
+%%
+%%
+%% Copyright 2016 Chef Software, Inc. All Rights Reserved.
+%%
+%% 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.
+%%
+
+-module(chef_telemetry_sup).
+
+-behaviour(supervisor).
+
+-export([init/1,
+         start_link/0
+        ]).
+
+start_link() ->
+    supervisor:start_link({local, ?MODULE}, ?MODULE, []).
+
+init([]) ->
+    Worker = {chef_telemetry_worker,
+             {chef_telemetry_worker, start_link, []},
+             permanent, 5000, supervisor, [chef_telemetry_worker]},
+    {ok, {{one_for_one, 10, 10}, [Worker]}}.