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Add a local configuration source and a non-environmental ENV config source

Summary:
See discussion in T2221. Before we can move configuration to the database, we have a bootstrapping problem: we need database credentials to live //somewhere// if we can't guess them (and we can only really guess localhost / root / no password).

Some options for this are:

  - Have them live in ENV variables.
    - These are often somewhat unfamiliar to users.
    - Scripts would become a huge pain -- you'd have to dump a bunch of stuff into ENV.
    - Some environments have limited ability to set ENV vars.
    - SSH is also a pain.
  - Have them live in a normal config file.
    - This probably isn't really too awful, but:
    - Since we deploy/upgrade with git, we can't currently let them edit a file which already exists, or their working copy will become dirty.
    - So they have to copy or create a file, then edit it.
    - The biggest issue I have with this is that it will be difficult to give specific, easily-followed directions from Setup. The instructions need to be like "Copy template.conf.php to real.conf.php, then edit these keys: x, y, z". This isn't as easy to follow as "run script Y".
  - Have them live in an abnormal config file with script access (this diff).
    - I think this is a little better than a normal config file, because we can tell users 'run phabricator/bin/config set mysql.user phabricator' and such, which is easier to follow than editing a config file.

I think this is only a marginal improvement over a normal config file and am open to arguments against this approach, but I think it will be a little easier for users to deal with than a normal config file. In most cases they should only need to store three values in this file -- db user/host/pass -- since once we have those we can bootstrap everything else. Normal config files also aren't going away for more advanced users, we're just offering a simple alternative for most users.

This also adds an ENVIRONMENT file as an alternative to PHABRICATOR_ENV. This is just a simple way to specify the environment if you don't have convenient access to env vars.

Test Plan: Ran `config set x y`, verified writes. Wrote to ENVIRONMENT, ran `PHABRICATOR_ENV= ./bin/repository`.

Reviewers: btrahan, vrana, codeblock

Reviewed By: codeblock

CC: aran

Maniphest Tasks: T2221

Differential Revision: https://secure.phabricator.com/D4294
This commit is contained in:
epriestley 2012-12-30 06:16:15 -08:00
parent 908253f1db
commit ba489f9d85
10 changed files with 163 additions and 7 deletions

16
.gitignore vendored
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@ -1,10 +1,6 @@
.DS_Store
._*
/docs/
/src/.phutil_module_cache
/conf/custom/*
/webroot/rsrc/custom
/.divinercache
.#*
*#
*~
@ -15,3 +11,15 @@
# Arcanist scratch directory
/.arc
# Diviner
/docs/
/.divinercache
# libphutil
/src/.phutil_module_cache
# Configuration
/conf/custom/*
/conf/local/local.json
/conf/local/ENVIRONMENT

1
bin/config Symbolic link
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@ -0,0 +1 @@
../scripts/setup/manage_config.php

0
conf/local/.keep Normal file
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22
scripts/setup/manage_config.php Executable file
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@ -0,0 +1,22 @@
#!/usr/bin/env php
<?php
$root = dirname(dirname(dirname(__FILE__)));
require_once $root.'/scripts/__init_script__.php';
$args = new PhutilArgumentParser($argv);
$args->setTagline('manage configuration');
$args->setSynopsis(<<<EOSYNOPSIS
**config** __command__ [__options__]
Manage Phabricator configuration.
EOSYNOPSIS
);
$args->parseStandardArguments();
$workflows = array(
new PhabricatorConfigManagementSetWorkflow(),
new PhutilHelpArgumentWorkflow(),
);
$args->parseWorkflows($workflows);

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@ -687,6 +687,9 @@ phutil_register_library_map(array(
'PhabricatorConfigEntryDAO' => 'applications/config/storage/PhabricatorConfigEntryDAO.php',
'PhabricatorConfigFileSource' => 'infrastructure/env/PhabricatorConfigFileSource.php',
'PhabricatorConfigListController' => 'applications/config/controller/PhabricatorConfigListController.php',
'PhabricatorConfigLocalSource' => 'infrastructure/env/PhabricatorConfigLocalSource.php',
'PhabricatorConfigManagementSetWorkflow' => 'infrastructure/env/management/PhabricatorConfigManagementSetWorkflow.php',
'PhabricatorConfigManagementWorkflow' => 'infrastructure/env/management/PhabricatorConfigManagementWorkflow.php',
'PhabricatorConfigProxySource' => 'infrastructure/env/PhabricatorConfigProxySource.php',
'PhabricatorConfigSource' => 'infrastructure/env/PhabricatorConfigSource.php',
'PhabricatorConfigStackSource' => 'infrastructure/env/PhabricatorConfigStackSource.php',
@ -2000,6 +2003,9 @@ phutil_register_library_map(array(
'PhabricatorConfigEntryDAO' => 'PhabricatorLiskDAO',
'PhabricatorConfigFileSource' => 'PhabricatorConfigProxySource',
'PhabricatorConfigListController' => 'PhabricatorConfigController',
'PhabricatorConfigLocalSource' => 'PhabricatorConfigProxySource',
'PhabricatorConfigManagementSetWorkflow' => 'PhabricatorConfigManagementWorkflow',
'PhabricatorConfigManagementWorkflow' => 'PhutilArgumentWorkflow',
'PhabricatorConfigProxySource' => 'PhabricatorConfigSource',
'PhabricatorConfigStackSource' => 'PhabricatorConfigSource',
'PhabricatorContentSourceView' => 'AphrontView',

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@ -0,0 +1,51 @@
<?php
final class PhabricatorConfigLocalSource
extends PhabricatorConfigProxySource {
public function __construct() {
$config = $this->loadConfig();
$this->setSource(new PhabricatorConfigDictionarySource($config));
}
public function setKeys(array $keys) {
$result = parent::setKeys($keys);
$this->saveConfig();
return $result;
}
public function deleteKeys(array $keys) {
$result = parent::deleteKeys($keys);
$this->saveConfig();
return parent::deleteKeys($keys);
}
private function loadConfig() {
$path = $this->getConfigPath();
if (@file_exists($path)) {
$data = @file_get_contents($path);
if ($data) {
$data = json_decode($data, true);
if (is_array($data)) {
return $data;
}
}
}
return array();
}
private function saveConfig() {
$config = $this->getSource()->getAllKeys();
$json = new PhutilJSON();
$data = $json->encodeFormatted($config);
Filesystem::writeFile($this->getConfigPath(), $data);
}
private function getConfigPath() {
$root = dirname(phutil_get_library_root('phabricator'));
$path = $root.'/conf/local/local.json';
return $path;
}
}

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@ -29,15 +29,15 @@ abstract class PhabricatorConfigProxySource
}
public function canWrite() {
return $this->getSource->canWrite();
return $this->getSource()->canWrite();
}
public function setKeys(array $keys) {
return $this->getSource->setKeys();
return $this->getSource()->setKeys($keys);
}
public function deleteKeys(array $keys) {
return $this->getSource->deleteKeys();
return $this->getSource()->deleteKeys();
}
}

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@ -139,6 +139,14 @@ final class PhabricatorEnv {
$env = idx($_ENV, $env_var);
}
if (!$env) {
$root = dirname(phutil_get_library_root('phabricator'));
$path = $root.'/conf/local/ENVIRONMENT';
if (Filesystem::pathExists($path)) {
$env = trim(Filesystem::readFile($path));
}
}
return $env;
}

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@ -0,0 +1,50 @@
<?php
final class PhabricatorConfigManagementSetWorkflow
extends PhabricatorConfigManagementWorkflow {
protected function didConstruct() {
$this
->setName('set')
->setExamples('**set** __key__ __value__')
->setSynopsis('Set a local configuration value.')
->setArguments(
array(
array(
'name' => 'args',
'wildcard' => true,
),
));
}
public function execute(PhutilArgumentParser $args) {
$console = PhutilConsole::getConsole();
$argv = $args->getArg('args');
if (count($argv) == 0) {
throw new PhutilArgumentUsageException(
"Specify a configuration key and a value to set it to.");
}
$key = $argv[0];
if (count($argv) == 1) {
throw new PhutilArgumentUsageException(
"Specify a value to set the key '{$key}' to.");
}
$value = $argv[1];
if (count($argv) > 2) {
throw new PhutilArgumentUsageException(
"Too many arguments: expected one key and one value.");
}
$config = new PhabricatorConfigLocalSource();
$config->setKeys(array($key => $value));
$console->writeOut(
pht("Set '%s' to '%s' in local configuration.", $key, $value)."\n");
}
}

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@ -0,0 +1,10 @@
<?php
abstract class PhabricatorConfigManagementWorkflow
extends PhutilArgumentWorkflow {
final public function isExecutable() {
return true;
}
}