drewcsillag

Feature Implementation Workflow

Task: $ARGUMENTS

---

Setup

1. Derive a kebab-case slug from the task description (e.g., "rename an SD" → rename-sd)
2. Create and checkout git branch: {slug}

drewcsillag

-- Create a table that will contain all the JSON object keys
CREATE TABLE KEYS (attrname STRING, expr STRING);
INSERT INTO KEYS
       SELECT DISTINCT(e.key), e.fullkey AS key
         FROM json_each(log.line) e, log;

-- Generate the CREATE TABLE with all the JSON object keys
.once eval.sql
SELECT 'CREATE TABLE exploded (k_' || group_concat(attrname,' TEXT, k_') || ' TEXT);'
  FROM (SELECT attrname FROM keys);

drewcsillag

final ThreadPoolExecutor experimentExecutor = new ThreadPoolExecutor(
  1, 1, 0, TimeUnit.MILLISECONDS, new LinkedBlockingQueue<Runnable>(1));
trial = new Trial(
  experimentExecutor,
  metricRegistry, 
  "password.succession", 
  () -> WhichReturn.valueOf(featureService.getFeature("password.succession")),
  Trial.IDENTITY_WRAPPER, hibernateWrapper);

drewcsillag

final Observable<Boolean> result = trial.doTrial(
  control, experiment, trialIsEqual, "checkpassword");

drewcsillag

final IsEqual<TrialResult<Boolean>> trialIsEqual = Trial.makeIsEqual(
    bothOrNeitherThrow, passwordCheckIsEqual.pairwiseEqual());

drewcsillag

final IsEqual<Boolean> passwordCheckIsEqual = new IsEqual<Boolean>() {
    @Override
    public boolean apply(final Boolean control, final Boolean experiment) {
        final List<String> mismatches = new ArrayList<>();
        final IsEqualUtil.MismatchConsumer consumer = IsEqualUtil.consumeToList(
            mismatches);
        final boolean success = checkNullity(control, experiment, consumer)
            && startCompare(consumer)
            .dotEquals(control, experiment, "checkmatches")
            .get();

drewcsillag

final IsEqual<Throwable> makeBothOrNeitherThrow = new IsEqual<Throwable>() {
  @Override
  public boolean apply(final Throwable control, final Throwable experiment) {
    final boolean result = ((control == null) == (experiment == null));
    if (!result) {
       /// log relevant info to Kafka
    }
    return result;
  }
};

drewcsillag

final Callable<Observable<Boolean>> control = 
  () -> oldPasswordCeckingApi.matches(username, password);
final Callable<Observable<Boolean>> experiment = 
  () -> authService.doPasswordCheck(username, password);

drewcsillag

[ see https://github.com/drewcsillag/rebaseit ]
[note
 gls = git log --format='format:%h : %s'
]
This is a theoretical example based off of real events.

So I'm in my git repo for my project and I start doing work.
Because git is awesome and I do stupid things, I commit *all* the
time.  Between refactoring passes and tests passing, I just
commit, because editor undo only goes so far sometimes.  Not only

drewcsillag

sudo apt-get purge lxc-docker lxc-docker-1.3.1
sudo rm -rf /var/lib/docker
sudo sppuppet agent -t -v