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phab/src/applications/harbormaster/step/BuildStepImplementation.php
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BuildStepImplementation.php
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<?php
abstract class BuildStepImplementation {
public static function getImplementations() {
$symbols = id(new PhutilSymbolLoader())
->setAncestorClass('BuildStepImplementation')
->setConcreteOnly(true)
->selectAndLoadSymbols();
return ipull($symbols, 'name');
}
/**
* The name of the implementation.
*/
abstract public function getName();
/**
* The generic description of the implementation.
*/
public function getGenericDescription() {
return '';
}
/**
* The description of the implementation, based on the current settings.
*/
public function getDescription() {
return $this->getGenericDescription();
}
/**
* Run the build target against the specified build.
*/
abstract public function execute(
HarbormasterBuild $build,
HarbormasterBuildTarget $build_target);
/**
* Gets the settings for this build step.
*/
public function getSettings() {
return $this->settings;
}
public function getSetting($key, $default = null) {
return idx($this->settings, $key, $default);
}
/**
* Loads the settings for this build step implementation from a build
* step or target.
*/
public final function loadSettings($build_object) {
$this->settings = $build_object->getDetails();
return $this;
}
/**
* Return the name of artifacts produced by this command.
*
* Something like:
*
* return array(
* 'some_name_input_by_user' => 'host');
*
* Future steps will calculate all available artifact mappings
* before them and filter on the type.
*
* @return array The mappings of artifact names to their types.
*/
public function getArtifactInputs() {
return array();
}
public function getArtifactOutputs() {
return array();
}
/**
* Returns a list of all artifacts made available by previous build steps.
*/
public static function loadAvailableArtifacts(
HarbormasterBuildPlan $build_plan,
HarbormasterBuildStep $current_build_step,
$artifact_type) {
$build_steps = $build_plan->loadOrderedBuildSteps();
return self::getAvailableArtifacts(
$build_plan,
$build_steps,
$current_build_step,
$artifact_type);
}
/**
* Returns a list of all artifacts made available by previous build steps.
*/
public static function getAvailableArtifacts(
HarbormasterBuildPlan $build_plan,
array $build_steps,
HarbormasterBuildStep $current_build_step,
$artifact_type) {
$previous_implementations = array();
foreach ($build_steps as $build_step) {
if ($build_step->getPHID() === $current_build_step->getPHID()) {
break;
}
$previous_implementations[] = $build_step->getStepImplementation();
}
$artifact_arrays = mpull($previous_implementations, 'getArtifactOutputs');
$artifacts = array();
foreach ($artifact_arrays as $array) {
$array = ipull($array, 'type', 'key');
foreach ($array as $name => $type) {
if ($type !== $artifact_type && $artifact_type !== null) {
continue;
}
$artifacts[$name] = $type;
}
}
return $artifacts;
}
/**
* Convert a user-provided string with variables in it, like:
*
* ls ${dirname}
*
* ...into a string with variables merged into it safely:
*
* ls 'dir with spaces'
*
* @param string Name of a `vxsprintf` function, like @{function:vcsprintf}.
* @param string User-provided pattern string containing `${variables}`.
* @param dict List of available replacement variables.
* @return string String with variables replaced safely into it.
*/
protected function mergeVariables($function, $pattern, array $variables) {
$regexp = '/\\$\\{(?P<name>[a-z\\.]+)\\}/';
$matches = null;
preg_match_all($regexp, $pattern, $matches);
$argv = array();
foreach ($matches['name'] as $name) {
if (!array_key_exists($name, $variables)) {
throw new Exception(pht("No such variable '%s'!", $name));
}
$argv[] = $variables[$name];
}
$pattern = str_replace('%', '%%', $pattern);
$pattern = preg_replace($regexp, '%s', $pattern);
return call_user_func($function, $pattern, $argv);
}
public function getFieldSpecifications() {
return array();
}
}
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