| # ex:ts=4:sw=4:sts=4:et |
| # -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*- |
| """ |
| BitBake 'Fetch' NPM implementation |
| |
| The NPM fetcher is used to retrieve files from the npmjs repository |
| |
| Usage in the recipe: |
| |
| SRC_URI = "npm://registry.npmjs.org/;name=${PN};version=${PV}" |
| Suported SRC_URI options are: |
| |
| - name |
| - version |
| |
| npm://registry.npmjs.org/${PN}/-/${PN}-${PV}.tgz would become npm://registry.npmjs.org;name=${PN};ver=${PV} |
| The fetcher all triggers off the existence of ud.localpath. If that exists and has the ".done" stamp, its assumed the fetch is good/done |
| |
| """ |
| |
| import os |
| import sys |
| import urllib |
| import json |
| import subprocess |
| import signal |
| import bb |
| from bb import data |
| from bb.fetch2 import FetchMethod |
| from bb.fetch2 import FetchError |
| from bb.fetch2 import ChecksumError |
| from bb.fetch2 import runfetchcmd |
| from bb.fetch2 import logger |
| from bb.fetch2 import UnpackError |
| from bb.fetch2 import ParameterError |
| from distutils import spawn |
| |
| def subprocess_setup(): |
| # Python installs a SIGPIPE handler by default. This is usually not what |
| # non-Python subprocesses expect. |
| # SIGPIPE errors are known issues with gzip/bash |
| signal.signal(signal.SIGPIPE, signal.SIG_DFL) |
| |
| class Npm(FetchMethod): |
| |
| """Class to fetch urls via 'npm'""" |
| def init(self, d): |
| pass |
| |
| def supports(self, ud, d): |
| """ |
| Check to see if a given url can be fetched with npm |
| """ |
| return ud.type in ['npm'] |
| |
| def debug(self, msg): |
| logger.debug(1, "NpmFetch: %s", msg) |
| |
| def clean(self, ud, d): |
| logger.debug(2, "Calling cleanup %s" % ud.pkgname) |
| bb.utils.remove(ud.localpath, False) |
| bb.utils.remove(ud.pkgdatadir, True) |
| bb.utils.remove(ud.fullmirror, False) |
| |
| def urldata_init(self, ud, d): |
| """ |
| init NPM specific variable within url data |
| """ |
| if 'downloadfilename' in ud.parm: |
| ud.basename = ud.parm['downloadfilename'] |
| else: |
| ud.basename = os.path.basename(ud.path) |
| |
| # can't call it ud.name otherwise fetcher base class will start doing sha1stuff |
| # TODO: find a way to get an sha1/sha256 manifest of pkg & all deps |
| ud.pkgname = ud.parm.get("name", None) |
| if not ud.pkgname: |
| raise ParameterError("NPM fetcher requires a name parameter", ud.url) |
| ud.version = ud.parm.get("version", None) |
| if not ud.version: |
| raise ParameterError("NPM fetcher requires a version parameter", ud.url) |
| ud.bbnpmmanifest = "%s-%s.deps.json" % (ud.pkgname, ud.version) |
| ud.registry = "http://%s" % (ud.url.replace('npm://', '', 1).split(';'))[0] |
| prefixdir = "npm/%s" % ud.pkgname |
| ud.pkgdatadir = d.expand("${DL_DIR}/%s" % prefixdir) |
| if not os.path.exists(ud.pkgdatadir): |
| bb.utils.mkdirhier(ud.pkgdatadir) |
| ud.localpath = d.expand("${DL_DIR}/npm/%s" % ud.bbnpmmanifest) |
| |
| self.basecmd = d.getVar("FETCHCMD_wget", True) or "/usr/bin/env wget -O -t 2 -T 30 -nv --passive-ftp --no-check-certificate " |
| self.basecmd += " --directory-prefix=%s " % prefixdir |
| |
| ud.write_tarballs = ((data.getVar("BB_GENERATE_MIRROR_TARBALLS", d, True) or "0") != "0") |
| ud.mirrortarball = 'npm_%s-%s.tar.xz' % (ud.pkgname, ud.version) |
| ud.fullmirror = os.path.join(d.getVar("DL_DIR", True), ud.mirrortarball) |
| |
| def need_update(self, ud, d): |
| if os.path.exists(ud.localpath): |
| return False |
| return True |
| |
| def _runwget(self, ud, d, command, quiet): |
| logger.debug(2, "Fetching %s using command '%s'" % (ud.url, command)) |
| bb.fetch2.check_network_access(d, command) |
| runfetchcmd(command, d, quiet) |
| |
| def _unpackdep(self, ud, pkg, data, destdir, dldir, d): |
| file = data[pkg]['tgz'] |
| logger.debug(2, "file to extract is %s" % file) |
| if file.endswith('.tgz') or file.endswith('.tar.gz') or file.endswith('.tar.Z'): |
| cmd = 'tar xz --strip 1 --no-same-owner --warning=no-unknown-keyword -f %s/%s' % (dldir, file) |
| else: |
| bb.fatal("NPM package %s downloaded not a tarball!" % file) |
| |
| # Change to subdir before executing command |
| save_cwd = os.getcwd() |
| if not os.path.exists(destdir): |
| os.makedirs(destdir) |
| os.chdir(destdir) |
| path = d.getVar('PATH', True) |
| if path: |
| cmd = "PATH=\"%s\" %s" % (path, cmd) |
| bb.note("Unpacking %s to %s/" % (file, os.getcwd())) |
| ret = subprocess.call(cmd, preexec_fn=subprocess_setup, shell=True) |
| os.chdir(save_cwd) |
| |
| if ret != 0: |
| raise UnpackError("Unpack command %s failed with return value %s" % (cmd, ret), ud.url) |
| |
| if 'deps' not in data[pkg]: |
| return |
| for dep in data[pkg]['deps']: |
| self._unpackdep(ud, dep, data[pkg]['deps'], "%s/node_modules/%s" % (destdir, dep), dldir, d) |
| |
| |
| def unpack(self, ud, destdir, d): |
| dldir = d.getVar("DL_DIR", True) |
| depdumpfile = "%s-%s.deps.json" % (ud.pkgname, ud.version) |
| with open("%s/npm/%s" % (dldir, depdumpfile)) as datafile: |
| workobj = json.load(datafile) |
| dldir = "%s/%s" % (os.path.dirname(ud.localpath), ud.pkgname) |
| |
| self._unpackdep(ud, ud.pkgname, workobj, "%s/npmpkg" % destdir, dldir, d) |
| |
| def _parse_view(self, output): |
| ''' |
| Parse the output of npm view --json; the last JSON result |
| is assumed to be the one that we're interested in. |
| ''' |
| pdata = None |
| outdeps = {} |
| datalines = [] |
| bracelevel = 0 |
| for line in output.splitlines(): |
| if bracelevel: |
| datalines.append(line) |
| elif '{' in line: |
| datalines = [] |
| datalines.append(line) |
| bracelevel = bracelevel + line.count('{') - line.count('}') |
| if datalines: |
| pdata = json.loads('\n'.join(datalines)) |
| return pdata |
| |
| def _getdependencies(self, pkg, data, version, d, ud, optional=False): |
| pkgfullname = pkg |
| if version != '*' and not '/' in version: |
| pkgfullname += "@'%s'" % version |
| logger.debug(2, "Calling getdeps on %s" % pkg) |
| fetchcmd = "npm view %s --json --registry %s" % (pkgfullname, ud.registry) |
| output = runfetchcmd(fetchcmd, d, True) |
| pdata = self._parse_view(output) |
| if not pdata: |
| raise FetchError("The command '%s' returned no output" % fetchcmd) |
| if optional: |
| pkg_os = pdata.get('os', None) |
| if pkg_os: |
| if not isinstance(pkg_os, list): |
| pkg_os = [pkg_os] |
| if 'linux' not in pkg_os or '!linux' in pkg_os: |
| logger.debug(2, "Skipping %s since it's incompatible with Linux" % pkg) |
| return |
| #logger.debug(2, "Output URL is %s - %s - %s" % (ud.basepath, ud.basename, ud.localfile)) |
| outputurl = pdata['dist']['tarball'] |
| data[pkg] = {} |
| data[pkg]['tgz'] = os.path.basename(outputurl) |
| self._runwget(ud, d, "%s %s" % (self.basecmd, outputurl), False) |
| |
| dependencies = pdata.get('dependencies', {}) |
| optionalDependencies = pdata.get('optionalDependencies', {}) |
| depsfound = {} |
| optdepsfound = {} |
| data[pkg]['deps'] = {} |
| for dep in dependencies: |
| if dep in optionalDependencies: |
| optdepsfound[dep] = dependencies[dep] |
| else: |
| depsfound[dep] = dependencies[dep] |
| for dep, version in optdepsfound.iteritems(): |
| self._getdependencies(dep, data[pkg]['deps'], version, d, ud, optional=True) |
| for dep, version in depsfound.iteritems(): |
| self._getdependencies(dep, data[pkg]['deps'], version, d, ud) |
| |
| def _getshrinkeddependencies(self, pkg, data, version, d, ud, lockdown, manifest): |
| logger.debug(2, "NPM shrinkwrap file is %s" % data) |
| outputurl = "invalid" |
| if ('resolved' not in data) or (not data['resolved'].startswith('http')): |
| # will be the case for ${PN} |
| fetchcmd = "npm view %s@%s dist.tarball --registry %s" % (pkg, version, ud.registry) |
| logger.debug(2, "Found this matching URL: %s" % str(fetchcmd)) |
| outputurl = runfetchcmd(fetchcmd, d, True) |
| else: |
| outputurl = data['resolved'] |
| self._runwget(ud, d, "%s %s" % (self.basecmd, outputurl), False) |
| manifest[pkg] = {} |
| manifest[pkg]['tgz'] = os.path.basename(outputurl).rstrip() |
| manifest[pkg]['deps'] = {} |
| |
| if pkg in lockdown: |
| sha1_expected = lockdown[pkg][version] |
| sha1_data = bb.utils.sha1_file("npm/%s/%s" % (ud.pkgname, manifest[pkg]['tgz'])) |
| if sha1_expected != sha1_data: |
| msg = "\nFile: '%s' has %s checksum %s when %s was expected" % (manifest[pkg]['tgz'], 'sha1', sha1_data, sha1_expected) |
| raise ChecksumError('Checksum mismatch!%s' % msg) |
| else: |
| logger.debug(2, "No lockdown data for %s@%s" % (pkg, version)) |
| |
| if 'dependencies' in data: |
| for obj in data['dependencies']: |
| logger.debug(2, "Found dep is %s" % str(obj)) |
| self._getshrinkeddependencies(obj, data['dependencies'][obj], data['dependencies'][obj]['version'], d, ud, lockdown, manifest[pkg]['deps']) |
| |
| def download(self, ud, d): |
| """Fetch url""" |
| jsondepobj = {} |
| shrinkobj = {} |
| lockdown = {} |
| |
| if not os.listdir(ud.pkgdatadir) and os.path.exists(ud.fullmirror): |
| dest = d.getVar("DL_DIR", True) |
| bb.utils.mkdirhier(dest) |
| save_cwd = os.getcwd() |
| os.chdir(dest) |
| runfetchcmd("tar -xJf %s" % (ud.fullmirror), d) |
| os.chdir(save_cwd) |
| return |
| |
| shwrf = d.getVar('NPM_SHRINKWRAP', True) |
| logger.debug(2, "NPM shrinkwrap file is %s" % shwrf) |
| try: |
| with open(shwrf) as datafile: |
| shrinkobj = json.load(datafile) |
| except: |
| logger.warn('Missing shrinkwrap file in NPM_SHRINKWRAP for %s, this will lead to unreliable builds!' % ud.pkgname) |
| lckdf = d.getVar('NPM_LOCKDOWN', True) |
| logger.debug(2, "NPM lockdown file is %s" % lckdf) |
| try: |
| with open(lckdf) as datafile: |
| lockdown = json.load(datafile) |
| except: |
| logger.warn('Missing lockdown file in NPM_LOCKDOWN for %s, this will lead to unreproducible builds!' % ud.pkgname) |
| |
| if ('name' not in shrinkobj): |
| self._getdependencies(ud.pkgname, jsondepobj, ud.version, d, ud) |
| else: |
| self._getshrinkeddependencies(ud.pkgname, shrinkobj, ud.version, d, ud, lockdown, jsondepobj) |
| |
| with open(ud.localpath, 'w') as outfile: |
| json.dump(jsondepobj, outfile) |
| |
| def build_mirror_data(self, ud, d): |
| # Generate a mirror tarball if needed |
| if ud.write_tarballs and not os.path.exists(ud.fullmirror): |
| # it's possible that this symlink points to read-only filesystem with PREMIRROR |
| if os.path.islink(ud.fullmirror): |
| os.unlink(ud.fullmirror) |
| |
| save_cwd = os.getcwd() |
| os.chdir(d.getVar("DL_DIR", True)) |
| logger.info("Creating tarball of npm data") |
| runfetchcmd("tar -cJf %s npm/%s npm/%s" % (ud.fullmirror, ud.bbnpmmanifest, ud.pkgname), d) |
| runfetchcmd("touch %s.done" % (ud.fullmirror), d) |
| os.chdir(save_cwd) |
| |