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#Dan Williamson made an edit 16/02/2016

Lingo: Scaling Code Quality

Housekeeping

See here for the story behind Lingo. Please add an issue for any bugs or feature requests.

The Lingo Tool

Install Lingo

Lingo is a CLI tool written in Go. To build the binary from source: It even sometimes works :-) Lingo is a nice tool written in Go. To build the binary from source:

go get github.com/lingo-reviews/lingo
cd $GOPATH/src/github.com/lingo-reviews/lingo
go install

Alternatively, the latest version of the binary can be downloaded from lingo.reviews:

wget http://lingo.reviews/lingo.zip && unzip lingo.zip

Then place Lingo in your PATH:

sudo cp lingo /usr/local/bin/

Note: the binary is for Linux. OSX and Windows are in the pipeline.

Run lingo to see the avaliable commands.

Enable Bash Auto-Complete

Run lingo setup-auto-completion to enable command auto-completion.

Or, if you have checked out the source code and prefer to do it by hand:

echo 'PROG=lingo source $GOPATH/src/github.com/lingo-reviews/lingo/scripts/bash_autocomplete.sh' >> ~/.bashrc
. ~/.bashrc
lingo --generate-bash-completion

Tenets

Lingo uses tenets to manage the quality of code. github.com/lingo-reviews/tenets contains some tenets and example code for each language to get you started. The following examples will use Go tenets.

go get github.com/lingo-reviews/tenets/go

First Run

Docker Quick Start

If you're installing Docker on Ubuntu, read our troubleshooting page first.

With Docker installed:

# Find some source code to review.
cd $GOPATH/src/github.com/lingo-reviews/tenets/go/tenets/license/tenet/example

# Review the code.
lingo review

# Read the tenet documentation for this code.
lingo docs

When Lingo reviews, it looks for a .lingo file in the current or parent directories. If those tenets use a docker driver (default) and no local docker image is found, Lingo goes and gets it. The first time you pull a docker tenet, it will pull the tenet base images. This means future tenet pulls will be much quicker.

Next, start without a .lingo file:

cd $GOPATH/src/github.com/lingo-reviews/tenets/go/tenets/simpleseed/example

# This will write a .lingo file.
lingo init

# List avaliable tenets on hub.docker.com:
docker search lingoreviews

# Add the simpleseed example:
lingo add lingoreviews/simpleseed

# Pull down the images from hub.docker.com:
lingo pull --all

# If you didn't pull, review will do it for you.

# Review the code, this time we'll keep some output at the end:
lingo review --output-format --json-pretty

Notes: Tenets can be pulled from any docker repository. A better tenet search UI is in the pipeline.

Lingo will prompt you to open each issue. Supported editors are: vi, vim, emacs, nano and subl. To skip the confirm steps, use --keep-all.

Binary Quick Start

All the other example folders under go/tenets use the binary driver. We will use the lingo build command to build them all at once. cd into go/tenets and run:

lingo build binary --all

You'll see the following output:

$ lingo build binary --all
Building Go binary: [~/.lingo_home/tenets/lingoreviews/juju_nosingle]
Building Go binary: [~/.lingo_home/tenets/lingoreviews/imports]
...
Building Go binary: [~/.lingo_home/tenets/lingoreviews/unused_arg]
Building Go binary: [~/.lingo_home/tenets/lingoreviews/juju_worker_periodic]
binary 17 / 17 [========================================================] 100.00 % 12s
Success! All binary tenets built.

Lingo builds and installs each binary. Commands such as add and info will now auto-complete with the names of the built binary tenets.

cd into any example folder and run lingo review. In a similar fashion, you can lingo build docker --all to build local copies of all the docker tenets.To add the binary drivers, we need to specify the driver when we add it:

lingo add lingoreviews/simpleseed --driver binary

Otherwise, the driver will default to "docker". By default, binary tenets are installed in ~/.lingo_home/tenets/[owner]/[name]. This can be overridden with the LINGO_BIN environment variable.

Options

Some tenets take options. To view their available options run:

lingo info <tenet-name>

The imports tenet, for example, takes a blacklist_regex option, here's an example of setting it:

lingo add lingoreviews/imports --options blacklist_regex=".*/State"

Writing a Tenet

To begin writing tenets, start here: lingo-reviews/tenets.

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