include shell script to abort if dep not installed. closes #2

ammarm08 · Feb 14, 2017 · 42cde6c · 42cde6c
1 parent fce10d0
commit 42cde6c
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Showing 2 changed files with 20 additions and 3 deletions.
diff --git a/lib/config.js b/lib/config.js
@@ -11,7 +11,8 @@ config.default_commands = {
   kill_node: 'pgrep -n node | xargs kill -INT',
   process_node_logs: `node --prof-process ./isolate-*`,
   clean_up: `rm ./isolate-* ${config.default_dir}/${config.default_output} ${config.default_dir}/${config.default_profiling}`,
-  mac_path: 'if [ `uname` == "Darwin" ]; then source ~/.profile; fi'
+  mac_path: 'if [ `uname` == "Darwin" ]; then source ~/.profile; fi',
+  checks: ''
 };
 
 config.clock = {
@@ -38,3 +39,15 @@ config.loadtest = {
     'auth': '-A'
   }
 };
+
+config.functions = {
+  check_deps: function checkDependency (dep) {
+    const map = {
+      'ab': 'apt-get install apache2-utils',
+      'loadtest': 'npm install',
+      'gtime': 'brew install gnu-time'
+    }
+
+    return `command -v ${dep} >/dev/null 2>&1 || { echo >&2 "${dep} not installed. Please run ${map[dep]} to install, then try again. Exiting ... "; exit 1; }`;
+  }
+}
diff --git a/lib/utils.js b/lib/utils.js
@@ -6,10 +6,13 @@ const config = require('./config'),
 
 const utils = module.exports = exports = {};
 
-// If not on Linux, fallback to `loadtest` and `gtime` programs for running tests
-if (process.platform !== 'linux') {
+// Platform specific dependencies
+if (process.platform === 'linux') {
+  config.default_commands.checks = config.functions.check_deps('ab');
+} else {
   config.loadtest.program = 'loadtest';
   config.clock.program = 'gtime --verbose';
+  config.default_commands.checks = [config.functions.check_deps('loadtest'), config.functions.check_deps('gtime')].join('\n');
 }
 
 /**
@@ -61,6 +64,7 @@ utils.mkdirIfNecessary = function () {
 
    // path setup + file cleanup + before-hooks
    cmds.push(`${config.default_commands.mac_path}`);
+   cmds.push(`${config.default_commands.checks}`);
    cmds.push(`${config.default_commands.clean_up}`);
    cmds.push(...app.beforeTasks);
    cmds.push('\n');