Skip to main content

mojolicious – first app (part 2)

I was going to call it a night but I just wanted to make a little more progress on this first app. I'd like to think I'm tired and cranky because I'm not seeing it. Mojolicious generated the following as my first app:
#!/usr/bin/env perl
use Mojolicious::Lite;

# Documentation browser under "/perldoc" (this plugin requires Perl 5.10)
plugin 'PODRenderer';

get '/welcome' => sub {
my $self = shift;


@@ index.html.ep
% layout 'default';
% title 'Welcome';
Welcome to Mojolicious!

@@ layouts/default.html.ep
<!doctype html><html>
<head><title><%= title %></title></head>
<body><%= content %></body>

That's everything. It's their version of hello world. The app started right away, however, it was my fault.  I pointed my browser to and the page that popped up was some sort of 404 error page. It was nice enough... but much larger than my screen so I had to scroll to see everything.

Which is when I realized that I was not seeing my project. After a quick code review I changed my browser to load and my welcome page arrived. However since there was no default page (aka index) or default redirect. I started looking.

Skimming the documentation I found something that looked like:
get '/*' => sub {
. . .

This had promise as I added a redirect.
get '/*' => sub {
my $self = shift;

My only problem is/was that it would not recognize or redirect I had to read a lot more doc and make a few assumptions as to what was going on. The mojo docs indicate that the pattern could have been a regex, however, their pattern matching is more efficient just because it is and based on the way most people use it. And in their pattern matcher '/*' indicates that they are greedy matching placeholders and not a pattern per say. (I think that the * indicates that there has to be at least one byte/char)

The strange thing is that '/' and '/*' are not the same string and both will not match the empty path. Only '/' will.

So in my app I have a '/welcome' in order to say hello. A '/*' to get all of the non-empty paths so that I can redirect them to '/welcome' and I have a '/' in order to catch the empty path. What a pain in the ass! At least I only have a few pages.



Popular posts from this blog

Entry level cost for CoreOS+Tectonic

CoreOS and Tectonic start their pricing at 10 servers. Managed CoreOS starts at $1000 per month for those first 10 servers and Tectonic is $5000 for the same 10 servers. Annualized that is $85K or at least one employee depending on your market. As a single employee company I'd rather hire the employee. Specially since I only have 3 servers.

The pricing is biased toward the largest servers with the largest capacities; my dual core 32GB i5 IntelNuc can never be mistaken for a 96-CPU dual or quad core DELL

If CoreOS does not figure out a different barrier of entry they are going to follow the Borland path to obscurity.

UPDATE 2017-10-30: With gratitude the CoreOS team has provided updated information on their pricing, however, I stand by my conclusion that the effective cost is lower when you deploy monster machines. The cost per node of my 1 CPU Intel NUC is the same as a 96 CPU server when you get beyond 10 nodes. I'll also reiterate that while my pricing notes are not currently…

eGalax touch on default Ubuntu 14.04.2 LTS

I have not had success with the touch drivers as yet.  The touch works and evtest also seems to report events, however, I have noticed that the button click is not working and no matter what I do xinput refuses to configure the buttons correctly.  When I downgraded to ubuntu 10.04 LTS everything sort of worked... there must have been something in the kermel as 10.04 was in the 2.6 kernel and 4.04 is in the 3.x branch.

One thing ... all of the documentation pointed to the wrong website or one in Taiwanese. I was finally able to locate the drivers again: (it would have been nice if they provided the install instructions in text rather than PDF)
Please open the document "EETI_eGTouch_Programming_Guide" under the Guide directory, and follow the Guidline to install driver.
download the appropriate versionunzip the fileread the programming manual And from that I'm distilling to the following: execute the answer all of the questio…

Prometheus vs Bosun

In conclusion... while Bosun(B) is still not the ideal monitoring system neither is Prometheus(P).


I am running Bosun in a Docker container hosted on CoreOS. Fleet service/unit files keep it running. However in once case I have experienced at least one severe crash as a result of a disk full condition. That it is implemented as part golang, java and python is an annoyance. The MIT license is about the only good thing.

I am trying to integrate Prometheus into my pipeline but losing steam fast. The Prometheus design seems to desire that you integrate your own cache inside your application and then allow the server to scrape the data, however, if the interval between scrapes is shorter than the longest transient session of your application then you need a gateway. A place to shuttle your data that will be a little more persistent.

(1) storing the data in my application might get me started more quickly
(2) getting the server to pull the data might be more secure
(3) using a push g…