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Create a separate class which handles command streaming over mtn automate stdio. Use that everywhere instead of the direct system calls.

master
Thomas Keller 2010-04-30 02:03:58 +02:00
parent b7ced5fa69
commit 445c90fefe
1 changed files with 289 additions and 108 deletions
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397
src/IDF/Scm/Monotone.php
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@ -25,10 +25,248 @@
* Monotone utils.
*
*/
class IDF_Scm_Monotone_Stdio
{
public static $SUPPORTED_STDIO_VERSION = 2;
private $repo;
private $proc;
private $pipes;
private $oob;
private $cmdnum;
private $lastcmd;
public function __construct($repo)
{
$this->repo = $repo;
$this->start();
}
public function __destruct()
{
$this->stop();
}
public function start()
{
if (is_resource($this->proc))
$this->stop();
$cmd = Pluf::f('idf_exec_cmd_prefix', '')
.sprintf("%s -d %s automate stdio --no-workspace --norc",
Pluf::f('mtn_path', 'mtn'),
escapeshellarg($this->repo));
$descriptors = array(
0 => array("pipe", "r"),
1 => array("pipe", "w"),
2 => array("pipe", "r")
);
$this->proc = proc_open($cmd, $descriptors, $this->pipes);
if (!is_resource($this->proc))
{
throw new IDF_Scm_Exception("could not start stdio process");
}
$this->_checkVersion();
$this->cmdnum = -1;
}
public function stop()
{
if (!is_resource($this->proc))
return;
fclose($this->pipes[0]);
fclose($this->pipes[1]);
fclose($this->pipes[2]);
proc_close($this->proc);
$this->proc = null;
}
private function _checkVersion()
{
$version = fgets($this->pipes[1]);
if (!preg_match('/^format-version: (\d+)$/', $version, $m) ||
$m[1] != self::$SUPPORTED_STDIO_VERSION)
{
throw new IDF_Scm_Exception(
"stdio format version mismatch, expected '".
self::$SUPPORTED_STDIO_VERSION."', got '".@$m[1]."'"
);
}
fgets($this->pipes[1]);
}
private function _write($args, $options = array())
{
$cmd = "";
if (count($options) > 0)
{
$cmd = "o";
foreach ($options as $k => $v)
{
$cmd .= strlen((string)$k) . ":" . (string)$k;
$cmd .= strlen((string)$v) . ":" . (string)$v;
}
$cmd .= "e ";
}
$cmd .= "l";
foreach ($args as $arg)
{
$cmd .= strlen((string)$arg) . ":" . (string)$arg;
}
$cmd .= "e\n";
if (!fwrite($this->pipes[0], $cmd))
{
throw new IDF_Scm_Exception("could not write '$cmd' to process");
}
$this->lastcmd = $cmd;
$this->cmdnum++;
}
private function _read()
{
$this->oob = array('w' => array(),
'p' => array(),
't' => array(),
'e' => array());
$output = "";
$errcode = 0;
while (true)
{
$read = array($this->pipes[1]);
$write = null;
$except = null;
$streamsChanged = stream_select(
$read, $write, $except, 0, 20000
);
if ($streamsChanged === false)
{
throw new IDF_Scm_Exception(
"Could not select() on read pipe"
);
}
if ($streamsChanged == 0)
{
continue;
}
$data = array(0,"",0);
$idx = 0;
while (true)
{
$c = fgetc($this->pipes[1]);
if ($c == ':')
{
if ($idx == 2)
break;
++$idx;
continue;
}
if (is_numeric($c))
$data[$idx] = $data[$idx] * 10 + $c;
else
$data[$idx] .= $c;
}
// sanity
if ($this->cmdnum != $data[0])
{
throw new IDF_Scm_Exception(
"command numbers out of sync; ".
"expected {$this->cmdnum}, got {$data[0]}"
);
}
$toRead = $data[2];
$buffer = "";
while ($toRead > 0)
{
$buffer .= fread($this->pipes[1], $toRead);
$toRead = $data[2] - strlen($buffer);
}
switch ($data[1])
{
case 'w':
case 'p':
case 't':
case 'e':
$this->oob[$data[1]][] = $buffer;
continue;
case 'm':
$output .= $buffer;
continue;
case 'l':
$errcode = $buffer;
break 2;
}
}
if ($errcode != 0)
{
throw new IDF_Scm_Exception(
"command '{$this->lastcmd}' returned error code $errcode: ".
implode(" ", $this->oob['e'])
);
}
return $output;
}
public function exec($args, $options = array())
{
$this->_write($args, $options);
return $this->_read();
}
public function getLastWarnings()
{
return array_key_exists('w', $this->oob) ?
$this->oob['w'] : array();
}
public function getLastProgress()
{
return array_key_exists('p', $this->oob) ?
$this->oob['p'] : array();
}
public function getLastTickers()
{
return array_key_exists('t', $this->oob) ?
$this->oob['t'] : array();
}
public function getLastErrors()
{
return array_key_exists('e', $this->oob) ?
$this->oob['e'] : array();
}
}
class IDF_Scm_Monotone extends IDF_Scm
{
public static $MIN_INTERFACE_VERSION = 12.0;
private $stdio;
/* ============================================== *
* *
* Common Methods Implemented By All The SCMs *
@ -39,6 +277,7 @@ class IDF_Scm_Monotone extends IDF_Scm
{
$this->repo = $repo;
$this->project = $project;
$this->stdio = new IDF_Scm_Monotone_Stdio($repo);
}
public function getRepositorySize()
@ -56,19 +295,14 @@ class IDF_Scm_Monotone extends IDF_Scm
public function isAvailable()
{
$out = array();
try {
$cmd = Pluf::f('idf_exec_cmd_prefix', '')
.sprintf("%s -d %s automate interface_version",
Pluf::f('mtn_path', 'mtn'),
escapeshellarg($this->repo));
self::exec('IDF_Scm_Monotone::isAvailable',
$cmd, $out, $return);
} catch (IDF_Scm_Exception $e) {
return false;
try
{
$out = $this->stdio->exec(array("interface_version"));
return floatval($out) >= self::$MIN_INTERFACE_VERSION;
}
catch (IDF_Scm_Exception $e) {}
return count($out) > 0 && floatval($out[0]) >= self::$MIN_INTERFACE_VERSION;
return false;
}
public function getBranches()
@ -77,25 +311,18 @@ class IDF_Scm_Monotone extends IDF_Scm
return $this->cache['branches'];
}
// FIXME: introduce handling of suspended branches
$cmd = Pluf::f('idf_exec_cmd_prefix', '')
.sprintf("%s -d %s automate branches",
Pluf::f('mtn_path', 'mtn'),
escapeshellarg($this->repo));
self::exec('IDF_Scm_Monotone::getBranches',
$cmd, $out, $return);
if ($return != 0) {
throw new IDF_Scm_Exception(sprintf($this->error_tpl,
$cmd, $return,
implode("\n", $out)));
}
$res = array();
$out = $this->stdio->exec(array("branches"));
// FIXME: we could expand each branch with one of its head revisions
// here, but these would soon become bogus anyway and we cannot
// map multiple head revisions here either, so we just use the
// selector as placeholder
foreach ($out as $b) {
$res = array();
foreach (preg_split("/\n/", $out, -1, PREG_SPLIT_NO_EMPTY) as $b)
{
$res["h:$b"] = $b;
}
$this->cache['branches'] = $res;
return $res;
}
@ -121,14 +348,8 @@ class IDF_Scm_Monotone extends IDF_Scm
*/
private function _resolveSelector($selector)
{
$cmd = Pluf::f('idf_exec_cmd_prefix', '')
.sprintf("%s -d %s automate select %s",
Pluf::f('mtn_path', 'mtn'),
escapeshellarg($this->repo),
escapeshellarg($selector));
self::exec('IDF_Scm_Monotone::_resolveSelector',
$cmd, $out, $return);
return $out;
$out = $this->stdio->exec(array("select", $selector));
return preg_split("/\n/", $out, -1, PREG_SPLIT_NO_EMPTY);
}
/**
@ -139,9 +360,6 @@ class IDF_Scm_Monotone extends IDF_Scm
*/
private static function _parseBasicIO($in)
{
if (substr($in, -1) != "\n")
$in .= "\n";
$pos = 0;
$stanzas = array();
@ -208,15 +426,9 @@ class IDF_Scm_Monotone extends IDF_Scm
if (!array_key_exists($rev, $certCache))
{
$cmd = Pluf::f('idf_exec_cmd_prefix', '')
.sprintf("%s -d %s automate certs %s",
Pluf::f('mtn_path', 'mtn'),
escapeshellarg($this->repo),
escapeshellarg($rev));
self::exec('IDF_Scm_Monotone::_getCerts',
$cmd, $out, $return);
$out = $this->stdio->exec(array("certs", $rev));
$stanzas = self::_parseBasicIO(implode("\n", $out));
$stanzas = self::_parseBasicIO($out);
$certs = array();
foreach ($stanzas as $stanza)
{
@ -264,16 +476,11 @@ class IDF_Scm_Monotone extends IDF_Scm
private function _getLastChangeFor($file, $startrev)
{
$cmd = Pluf::f('idf_exec_cmd_prefix', '')
.sprintf("%s -d %s automate get_content_changed %s %s",
Pluf::f('mtn_path', 'mtn'),
escapeshellarg($this->repo),
escapeshellarg($startrev),
escapeshellarg($file));
self::exec('IDF_Scm_Monotone::_getLastChangeFor',
$cmd, $out, $return);
$out = $this->stdio->exec(array(
"get_content_changed", $startrev, $file
));
$stanzas = self::_parseBasicIO(implode("\n", $out));
$stanzas = self::_parseBasicIO($out);
// FIXME: we only care about the first returned content mark
// everything else seem to be very rare cases
@ -305,17 +512,15 @@ class IDF_Scm_Monotone extends IDF_Scm
**/
public function getTags()
{
if (isset($this->cache['tags'])) {
if (isset($this->cache['tags']))
{
return $this->cache['tags'];
}
$cmd = Pluf::f('idf_exec_cmd_prefix', '')
.sprintf("%s -d %s automate tags",
Pluf::f('mtn_path', 'mtn'),
escapeshellarg($this->repo));
self::exec('IDF_Scm_Monotone::getTags', $cmd, $out, $return);
$out = $this->stdio->exec(array("tags"));
$tags = array();
$stanzas = self::_parseBasicIO(implode("\n", $out));
$stanzas = self::_parseBasicIO($out);
foreach ($stanzas as $stanza)
{
$tagname = null;
@ -360,15 +565,12 @@ class IDF_Scm_Monotone extends IDF_Scm
return array();
}
$cmd = Pluf::f('idf_exec_cmd_prefix', '')
.sprintf("%s -d %s automate get_manifest_of %s",
Pluf::f('mtn_path', 'mtn'),
escapeshellarg($this->repo),
escapeshellarg($revs[0]));
self::exec('IDF_Scm_Monotone::getTree', $cmd, $out, $return);
$out = $this->stdio->exec(array(
"get_manifest_of", $revs[0]
));
$files = array();
$stanzas = self::_parseBasicIO(implode("\n", $out));
$stanzas = self::_parseBasicIO($out);
$folder = $folder == '/' || empty($folder) ? '' : $folder.'/';
foreach ($stanzas as $stanza)
@ -501,15 +703,12 @@ class IDF_Scm_Monotone extends IDF_Scm
if (count($revs) == 0)
return false;
$cmd = Pluf::f('idf_exec_cmd_prefix', '')
.sprintf("%s -d %s automate get_manifest_of %s",
Pluf::f('mtn_path', 'mtn'),
escapeshellarg($this->repo),
escapeshellarg($revs[0]));
self::exec('IDF_Scm_Monotone::getPathInfo', $cmd, $out, $return);
$out = $this->stdio->exec(array(
"get_manifest_of", $revs[0]
));
$files = array();
$stanzas = self::_parseBasicIO(implode("\n", $out));
$stanzas = self::_parseBasicIO($out);
foreach ($stanzas as $stanza)
{
@ -562,13 +761,13 @@ class IDF_Scm_Monotone extends IDF_Scm
public function getFile($def, $cmd_only=false)
{
$cmd = Pluf::f('idf_exec_cmd_prefix', '')
.sprintf("%s -d %s automate get_file %s",
Pluf::f('mtn_path', 'mtn'),
escapeshellarg($this->repo),
escapeshellarg($def->hash));
return ($cmd_only)
? $cmd : self::shell_exec('IDF_Scm_Monotone::getFile', $cmd);
// this won't work with remote databases
if ($cmd_only)
{
throw new Pluf_Exception_NotImplemented();
}
return $this->stdio->exec(array("get_file", $def->hash));
}
private function _getDiff($target, $source = null)
@ -594,16 +793,10 @@ class IDF_Scm_Monotone extends IDF_Scm
return "";
}
$cmd = Pluf::f('idf_exec_cmd_prefix', '')
.sprintf("%s -d %s automate content_diff -r %s -r %s",
Pluf::f('mtn_path', 'mtn'),
escapeshellarg($this->repo),
escapeshellarg($sources[0]),
escapeshellarg($targets[0]));
self::exec('IDF_Scm_Monotone::_getDiff',
$cmd, $out, $return);
return implode("\n", $out);
return $this->stdio->exec(
array("content_diff"),
array("r" => $sources[0], "r" => $targets[0])
);
}
/**
@ -655,16 +848,12 @@ class IDF_Scm_Monotone extends IDF_Scm
if (count($revs) == 0)
return false;
$cmd = Pluf::f('idf_exec_cmd_prefix', '')
.sprintf("%s -d %s automate get_revision %s",
Pluf::f('mtn_path', 'mtn'),
escapeshellarg($this->repo),
escapeshellarg($revs[0]));
self::exec('IDF_Scm_Monotone::isCommitLarge',
$cmd, $out, $return);
$out = $this->stdio->exec(array(
"get_revision", $revs[0]
));
$newAndPatchedFiles = 0;
$stanzas = self::_parseBasicIO(implode("\n", $out));
$stanzas = self::_parseBasicIO($out);
foreach ($stanzas as $stanza)
{
@ -682,16 +871,8 @@ class IDF_Scm_Monotone extends IDF_Scm
* @param int Number of changes (10).
* @return array Changes.
*/
public function getChangeLog($commit='HEAD', $n=10)
public function getChangeLog($commit=null, $n=10)
{
if ($n === null) $n = '';
else $n = ' -'.$n;
$cmd = sprintf('GIT_DIR=%s '.Pluf::f('git_path', 'git').' log%s --date=iso --pretty=format:\'%s\' %s',
escapeshellarg($this->repo), $n, $this->mediumtree_fmt,
escapeshellarg($commit));
$out = array();
$cmd = Pluf::f('idf_exec_cmd_prefix', '').$cmd;
self::exec('IDF_Scm_Monotone::getChangeLog', $cmd, $out);
return self::parseLog($out);
throw new Pluf_Exception_NotImplemented();
}
}