History

commit-bot@chromium.org 7e9fb8ddd6 Fix an issue with FireFox where it blurs when copying from a smaller to a larger canvas. Work around that by drawing a rect for each pixel. Also, add a drop shadow to the hex display so you can see it on a dark background color. BUG=skia: R=mtklein@google.com Author: jcgregorio@google.com Review URL: https://codereview.chromium.org/261303002 git-svn-id: http://skia.googlecode.com/svn/trunk@14575 2bbb7eff-a529-9590-31e7-b0007b416f81		2014-05-05 18:43:16 +00:00
..
res	Fix an issue with FireFox where it blurs when copying from a smaller to a	2014-05-05 18:43:16 +00:00
setup	Run Squid as a reverse caching proxy on port 80 and proxy the requests	2014-05-01 20:10:03 +00:00
sys	Run Squid as a reverse caching proxy on port 80 and proxy the requests	2014-05-01 20:10:03 +00:00
templates	Add Doxygen link to titlebar.	2014-05-02 14:13:08 +00:00
DESIGN.md	Run Squid as a reverse caching proxy on port 80 and proxy the requests	2014-05-01 20:10:03 +00:00
main.cpp	First pass at workspaces.	2014-04-19 13:55:50 +00:00
README.md	Run Squid as a reverse caching proxy on port 80 and proxy the requests	2014-05-01 20:10:03 +00:00
result.cpp	Initial code for webtry, a web application for allowing users to try out Skia.	2014-04-09 18:59:44 +00:00
safec++	Set ulimits for the compile stage.	2014-04-30 19:38:51 +00:00
seccomp_bpf.h	Sanitizing source files in Housekeeper-Nightly	2014-04-10 03:05:44 +00:00
TODO.md	Factor out common template code. Send stdout back to web page.	2014-04-22 21:13:45 +00:00
webtry.go	Use CodeMirror for WebTry snippets.	2014-05-01 15:14:56 +00:00

README.md

WebTry

Allows trying out Skia code in the browser. Run a local webserver and from the pages it serves try out Skia code and see the results immediately. To make sandboxing easier this must be built w/GPU off.

Running Locally

$ GYP_GENERATORS=ninja  ./gyp_skia  gyp/webtry.gyp gyp/most.gyp -Dskia_gpu=0
$ ninja -C out/Debug webtry
$ cd experimental/webtry
$ go build webtry.go
$ ./webtry

Then visit http://localhost:8000 in your browser.

Only tested under linux, doubtful it will work on other platforms.

Full Server Setup

Create a GCE instance:

gcutil --project=google.com:skia-buildbots addinstance skia-webtry-b \
  --zone=us-central2-b --external_ip_address=108.170.220.126 \
  --service_account=default \
  --service_account_scopes="https://www.googleapis.com/auth/devstorage.full_control" \
  --network=default --machine_type=n1-standard-1 --image=backports-debian-7-wheezy-v20140331 \
  --persistent_boot_disk

Make sure port 80 is accessible externally for the above instance.

SSH into the instance:

gcutil --project=google.com:skia-buildbots ssh --ssh_user=default skia-webtry-b

Do once

The following things only need to be done once

sudo apt-get install git schroot debootstrap
git clone https://skia.googlesource.com/skia
Add the following to /etc/fstab and reboot:

none /dev/shm tmpfs rw,nosuid,nodev,noexec 0 0

The above will allow ninja to run. See http://stackoverflow.com/questions/2009278/python-multiprocessing-permission-denied

Add the following to the /etc/schroot/minimal/fstab:

/home/webtry/inout /inout none rw,bind 0 0
Change /etc/monit/monitrc to:

set daemon 2

then run the following so it applies:

sudo /etc/init.d/monit restart

This means that monit will poll every two seconds that our application is up and running.

Set the TCP keepalive. For more info see: https://developers.google.com/cloud-sql/docs/gce-access

sudo bash -c 'echo 60 > /proc/sys/net/ipv4/tcp_keepalive_time'

Do the first time

Do the following the first time you setup a machine, and each time you want to update the code running on the server

cd ~/skia/experimental/webtry/setup
./webtry_setup.sh

Once, after setup

Do this step only once, but only after running webtry_setup.sh the first time

sudo debootstrap --variant=minbase wheezy /srv/chroot/webtry