[cli] allow passing context to environment files

.luacheckrc

@@ -4,3 +4,5 @@ busted = {std = "+busted", globals = { 'fixture' } }
 files["**/spec/**/*_spec.lua"] = busted
 
 globals = { 'rawlen' }
+
+files['gateway/config/*.lua'] = { globals = { 'context' } }

CHANGELOG.md

@@ -6,6 +6,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
 
+### Added
+
+- Environment files now can use global `context` variable to share data [PR #964](https://github.com/3scale/apicast/pull/964)
+
 ### Changed
 
 - Improve startup time by improving templating performance and caching filesystem access [PR #964](https://github.com/3scale/apicast/pull/964)

gateway/src/apicast/cli/command/start.lua

@@ -81,7 +81,7 @@ end
 
 
 local function build_environment_config(options)
-    local config = Environment.new()
+    local config = Environment.new(options)
 
     resty_env.set('APICAST_POLICY_LOAD_PATH', concat(options.policy_load_path,':'))
 
@@ -139,6 +139,9 @@ local function build_context(options, config)
 
     context.access_log_file = options.access_log_file
 
+    -- expose parsed CLI options
+    context.options = options
+
     return context
 end
 

gateway/src/apicast/cli/environment.lua

@@ -117,6 +117,7 @@ _M.default_config = {
     policy_chain = require('apicast.policy_chain').default(),
     nameservers = parse_nameservers(),
     worker_processes = cpus() or 'auto',
+    template = 'http.d/apicast.conf.liquid',
     package = {
         path = package.path,
         cpath = package.cpath,
@@ -151,8 +152,8 @@ end
 
 --- Initialize new environment.
 -- @treturn Environment
-function _M.new()
-    return setmetatable({ _context = linked_list.readonly(_M.default_config), loaded = {} }, mt)
+function _M.new(context)
+    return setmetatable({ _context = linked_list.readonly(_M.default_config, context), loaded = {} }, mt)
 end
 
 local function expand_environment_name(name)

spec/cli/environment_spec.lua

@@ -0,0 +1,14 @@
+local _M = require('apicast.cli.environment')
+
+describe('Environment Configuration', function ()
+
+  describe('.new', function()
+    it('accepts default', function()
+      local default = { foo = 'bar' }
+      local env = _M.new(default)
+
+      assert.contains(default, env:context())
+    end)
+  end)
+
+end)