Skip to content
This repository
Fetching contributors…

Cannot retrieve contributors at this time

file 595 lines (462 sloc) 23.503 kb
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595
"""
Builds out and synchronizes yum repo mirrors.
Initial support for rsync, perhaps reposync coming later.

Copyright 2006-2007, Red Hat, Inc and Others
Michael DeHaan <michael.dehaan AT gmail>

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA
"""

import os
import os.path
import time
import yaml # Howell-Clark version
import sys
HAS_YUM = True
try:
    import yum
except:
    HAS_YUM = False

import utils
from cexceptions import *
import traceback
import errno
from utils import _
import clogger

class RepoSync:
    """
Handles conversion of internal state to the tftpboot tree layout
"""

    # ==================================================================================

    def __init__(self,config,tries=1,nofail=False,logger=None):
        """
Constructor
"""
        self.verbose = True
        self.api = config.api
        self.config = config
        self.distros = config.distros()
        self.profiles = config.profiles()
        self.systems = config.systems()
        self.settings = config.settings()
        self.repos = config.repos()
        self.rflags = self.settings.reposync_flags
        self.tries = tries
        self.nofail = nofail
        self.logger = logger

        if logger is None:
           self.logger = clogger.Logger()

        self.logger.info("hello, reposync")


    # ===================================================================

    def run(self, name=None, verbose=True):
        """
Syncs the current repo configuration file with the filesystem.
"""
            
        self.logger.info("run, reposync, run!")
        
        try:
            self.tries = int(self.tries)
        except:
            utils.die(self.logger,"retry value must be an integer")

        self.verbose = verbose

        report_failure = False
        for repo in self.repos:
            if name is not None and repo.name != name:
                # invoked to sync only a specific repo, this is not the one
                continue
            elif name is None and not repo.keep_updated:
                # invoked to run against all repos, but this one is off
                self.logger.info("%s is set to not be updated" % repo.name)
                continue

            repo_mirror = os.path.join(self.settings.webdir, "repo_mirror")
            repo_path = os.path.join(repo_mirror, repo.name)
            mirror = repo.mirror

            if not os.path.isdir(repo_path) and not repo.mirror.lower().startswith("rhn://"):
                os.makedirs(repo_path)

            # set the environment keys specified for this repo,
            # save the old ones if they modify an existing variable

            env = repo.environment
            old_env = {}

            for k in env.keys():
                self.logger.debug("setting repo environment: %s=%s" % (k,env[k]))
                if env[k] is not None:
                    if os.getenv(k):
                        old_env[k] = os.getenv(k)
                    else:
                        os.environ[k] = env[k]

            # which may actually NOT reposync if the repo is set to not mirror locally
            # but that's a technicality

            for x in range(self.tries+1,1,-1):
                success = False
                try:
                    self.sync(repo)
                    success = True
                    break
                except:
                    utils.log_exc(self.logger)
                    self.logger.warning("reposync failed, tries left: %s" % (x-2))

            # cleanup/restore any environment variables that were
            # added or changed above

            for k in env.keys():
                if env[k] is not None:
                    if old_env.has_key(k):
                        self.logger.debug("resetting repo environment: %s=%s" % (k,old_env[k]))
                        os.environ[k] = old_env[k]
                    else:
                        self.logger.debug("removing repo environment: %s=%s" % (k,env[k]))
                        del os.environ[k]

            if not success:
                report_failure = True
                if not self.nofail:
                    utils.die(self.logger,"reposync failed, retry limit reached, aborting")
                else:
                    self.logger.error("reposync failed, retry limit reached, skipping")

            self.update_permissions(repo_path)

        if report_failure:
            utils.die(self.logger,"overall reposync failed, at least one repo failed to synchronize")

        return True

    # ==================================================================================

    def sync(self, repo):
      
        """
Conditionally sync a repo, based on type.
"""

        if repo.breed == "rhn":
            return self.rhn_sync(repo)
        elif repo.breed == "yum":
            return self.yum_sync(repo)
        elif repo.breed == "apt":
            return self.apt_sync(repo)
        elif repo.breed == "rsync":
            return self.rsync_sync(repo)
        else:
            utils.die(self.logger,"unable to sync repo (%s), unknown or unsupported repo type (%s)" % (repo.name, repo.breed))

    # ====================================================================================

    def createrepo_walker(self, repo, dirname, fnames):
        """
Used to run createrepo on a copied Yum mirror.
"""
        if os.path.exists(dirname) or repo['breed'] == 'rsync':
            utils.remove_yum_olddata(dirname)

            # add any repo metadata we can use
            mdoptions = []
            if os.path.isfile("%s/.origin/repomd.xml" % (dirname)):
                if not HAS_YUM:
                   utils.die(self.logger,"yum is required to use this feature")

                rmd = yum.repoMDObject.RepoMD('', "%s/.origin/repomd.xml" % (dirname))
                if rmd.repoData.has_key("group"):
                    groupmdfile = rmd.getData("group").location[1]
                    mdoptions.append("-g %s" % groupmdfile)
                if rmd.repoData.has_key("prestodelta"):
                    # need createrepo >= 0.9.7 to add deltas
                    if utils.check_dist() == "redhat" or utils.check_dist() == "suse":
                        cmd = "/usr/bin/rpmquery --queryformat=%{VERSION} createrepo"
                        createrepo_ver = utils.subprocess_get(self.logger, cmd)
                        if createrepo_ver >= "0.9.7":
                            mdoptions.append("--deltas")
                        else:
                            self.logger.error("this repo has presto metadata; you must upgrade createrepo to >= 0.9.7 first and then need to resync the repo through cobbler.")

            blended = utils.blender(self.api, False, repo)
            flags = blended.get("createrepo_flags","(ERROR: FLAGS)")
            try:
                # BOOKMARK
                cmd = "createrepo %s %s %s" % (" ".join(mdoptions), flags, dirname)
                utils.subprocess_call(self.logger, cmd)
            except:
                utils.log_exc(self.logger)
                self.logger.error("createrepo failed.")
            del fnames[:] # we're in the right place

    # ====================================================================================

    def rsync_sync(self, repo):

        """
Handle copying of rsync:// and rsync-over-ssh repos.
"""

        repo_mirror = repo.mirror

        if not repo.mirror_locally:
            utils.die(self.logger,"rsync:// urls must be mirrored locally, yum cannot access them directly")

        if repo.rpm_list != "" and repo.rpm_list != []:
            self.logger.warning("--rpm-list is not supported for rsync'd repositories")

        # FIXME: don't hardcode
        dest_path = os.path.join(self.settings.webdir+"/repo_mirror", repo.name)

        spacer = ""
        if not repo.mirror.startswith("rsync://") and not repo.mirror.startswith("/"):
            spacer = "-e ssh"
        if not repo.mirror.endswith("/"):
            repo.mirror = "%s/" % repo.mirror

        # FIXME: wrapper for subprocess that logs to logger
        cmd = "rsync -rltDv --copy-unsafe-links --delete-after %s --delete --exclude-from=/etc/cobbler/rsync.exclude %s %s" % (spacer, repo.mirror, dest_path)
        rc = utils.subprocess_call(self.logger, cmd)

        if rc !=0:
            utils.die(self.logger,"cobbler reposync failed")
        os.path.walk(dest_path, self.createrepo_walker, repo)
        self.create_local_file(dest_path, repo)

    # ====================================================================================
    
    def rhn_sync(self, repo):

        """
Handle mirroring of RHN repos.
"""

        repo_mirror = repo.mirror

        # FIXME? warn about not having yum-utils. We don't want to require it in the package because
        # RHEL4 and RHEL5U0 don't have it.

        if not os.path.exists("/usr/bin/reposync"):
            utils.die(self.logger,"no /usr/bin/reposync found, please install yum-utils")

        cmd = "" # command to run
        has_rpm_list = False # flag indicating not to pull the whole repo

        # detect cases that require special handling

        if repo.rpm_list != "" and repo.rpm_list != []:
            has_rpm_list = True

        # create yum config file for use by reposync
        # FIXME: don't hardcode
        dest_path = os.path.join(self.settings.webdir+"/repo_mirror", repo.name)
        temp_path = os.path.join(dest_path, ".origin")

        if not os.path.isdir(temp_path):
            # FIXME: there's a chance this might break the RHN D/L case
            os.makedirs(temp_path)
         
        # how we invoke yum-utils depends on whether this is RHN content or not.

       
        # this is the somewhat more-complex RHN case.
        # NOTE: this requires that you have entitlements for the server and you give the mirror as rhn://$channelname
        if not repo.mirror_locally:
            utils.die("rhn:// repos do not work with --mirror-locally=1")

        if has_rpm_list:
            self.logger.warning("warning: --rpm-list is not supported for RHN content")
        rest = repo.mirror[6:] # everything after rhn://
        cmd = "/usr/bin/reposync %s -r %s --download_path=%s" % (self.rflags, rest, self.settings.webdir+"/repo_mirror")
        if repo.name != rest:
            args = { "name" : repo.name, "rest" : rest }
            utils.die(self.logger,"ERROR: repository %(name)s needs to be renamed %(rest)s as the name of the cobbler repository must match the name of the RHN channel" % args)

        if repo.arch == "i386":
            # counter-intuitive, but we want the newish kernels too
            repo.arch = "i686"

        if repo.arch != "":
            cmd = "%s -a %s" % (cmd, repo.arch)

        # now regardless of whether we're doing yumdownloader or reposync
        # or whether the repo was http://, ftp://, or rhn://, execute all queued
        # commands here. Any failure at any point stops the operation.

        if repo.mirror_locally:
            rc = utils.subprocess_call(self.logger, cmd)
            # Don't die if reposync fails, it is logged
            # if rc !=0:
            # utils.die(self.logger,"cobbler reposync failed")

        # some more special case handling for RHN.
        # create the config file now, because the directory didn't exist earlier

        temp_file = self.create_local_file(temp_path, repo, output=False)

        # now run createrepo to rebuild the index

        if repo.mirror_locally:
            os.path.walk(dest_path, self.createrepo_walker, repo)

        # create the config file the hosts will use to access the repository.

        self.create_local_file(dest_path, repo)

    # ====================================================================================

    def yum_sync(self, repo):

        """
Handle copying of http:// and ftp:// yum repos.
"""

        repo_mirror = repo.mirror

        # warn about not having yum-utils. We don't want to require it in the package because
        # RHEL4 and RHEL5U0 don't have it.

        if not os.path.exists("/usr/bin/reposync"):
            utils.die(self.logger,"no /usr/bin/reposync found, please install yum-utils")

        cmd = "" # command to run
        has_rpm_list = False # flag indicating not to pull the whole repo

        # detect cases that require special handling

        if repo.rpm_list != "" and repo.rpm_list != []:
            has_rpm_list = True

        # create yum config file for use by reposync
        dest_path = os.path.join(self.settings.webdir+"/repo_mirror", repo.name)
        temp_path = os.path.join(dest_path, ".origin")

        if not os.path.isdir(temp_path) and repo.mirror_locally:
            # FIXME: there's a chance this might break the RHN D/L case
            os.makedirs(temp_path)
         
        # create the config file that yum will use for the copying

        if repo.mirror_locally:
            temp_file = self.create_local_file(temp_path, repo, output=False)

        if not has_rpm_list and repo.mirror_locally:
            # if we have not requested only certain RPMs, use reposync
            cmd = "/usr/bin/reposync %s --config=%s --repoid=%s --download_path=%s" % (self.rflags, temp_file, repo.name, self.settings.webdir+"/repo_mirror")
            if repo.arch != "":
                if repo.arch == "x86":
                   repo.arch = "i386" # FIX potential arch errors
                if repo.arch == "i386":
                   # counter-intuitive, but we want the newish kernels too
                   cmd = "%s -a i686" % (cmd)
                else:
                   cmd = "%s -a %s" % (cmd, repo.arch)

        elif repo.mirror_locally:

            # create the output directory if it doesn't exist
            if not os.path.exists(dest_path):
               os.makedirs(dest_path)

            use_source = ""
            if repo.arch == "src":
                use_source = "--source"
 
            # older yumdownloader sometimes explodes on --resolvedeps
            # if this happens to you, upgrade yum & yum-utils
            extra_flags = self.settings.yumdownloader_flags
            cmd = "/usr/bin/yumdownloader %s %s --disablerepo=* --enablerepo=%s -c %s --destdir=%s %s" % (extra_flags, use_source, repo.name, temp_file, dest_path, " ".join(repo.rpm_list))

        # now regardless of whether we're doing yumdownloader or reposync
        # or whether the repo was http://, ftp://, or rhn://, execute all queued
        # commands here. Any failure at any point stops the operation.

        if repo.mirror_locally:
            rc = utils.subprocess_call(self.logger, cmd)
            if rc !=0:
                utils.die(self.logger,"cobbler reposync failed")

        repodata_path = os.path.join(dest_path, "repodata")

        if not os.path.exists("/usr/bin/wget"):
            utils.die(self.logger,"no /usr/bin/wget found, please install wget")

        # grab repomd.xml and use it to download any metadata we can use
        cmd2 = "/usr/bin/wget -q %s/repodata/repomd.xml -O %s/repomd.xml" % (repo_mirror, temp_path)
        rc = utils.subprocess_call(self.logger,cmd2)
        if rc == 0:
            # create our repodata directory now, as any extra metadata we're
            # about to download probably lives there
            if not os.path.isdir(repodata_path):
                os.makedirs(repodata_path)
            rmd = yum.repoMDObject.RepoMD('', "%s/repomd.xml" % (temp_path))
            for mdtype in rmd.repoData.keys():
                # don't download metadata files that are created by default
                if mdtype not in ["primary", "primary_db", "filelists", "filelists_db", "other", "other_db"]:
                    mdfile = rmd.getData(mdtype).location[1]
                    cmd3 = "/usr/bin/wget -q %s/%s -O %s/%s" % (repo_mirror, mdfile, dest_path, mdfile)
                    utils.subprocess_call(self.logger,cmd3)
                    if rc !=0:
                        utils.die(self.logger,"wget failed")

        # now run createrepo to rebuild the index

        if repo.mirror_locally:
            os.path.walk(dest_path, self.createrepo_walker, repo)

        # create the config file the hosts will use to access the repository.

        self.create_local_file(dest_path, repo)

    # ====================================================================================
 

    def apt_sync(self, repo):

        """
Handle copying of http:// and ftp:// debian repos.
"""

        repo_mirror = repo.mirror

        # warn about not having mirror program.

        mirror_program = "/usr/bin/debmirror"
        if not os.path.exists(mirror_program):
            utils.die(self.logger,"no %s found, please install it"%(mirror_program))

        cmd = "" # command to run
        has_rpm_list = False # flag indicating not to pull the whole repo

        # detect cases that require special handling

        if repo.rpm_list != "" and repo.rpm_list != []:
            utils.die(self.logger,"has_rpm_list not yet supported on apt repos")

        if not repo.arch:
            utils.die(self.logger,"Architecture is required for apt repositories")

        # built destination path for the repo
        dest_path = os.path.join("/var/www/cobbler/repo_mirror", repo.name)
         
        if repo.mirror_locally:
            # NOTE: Dropping @@suite@@ replace as it is also dropped from
            # from manage_import_debian_ubuntu.py due that repo has no os_version
            # attribute. If it is added again it will break the Web UI!
            #mirror = repo.mirror.replace("@@suite@@",repo.os_version)
            mirror = repo.mirror

            idx = mirror.find("://")
            method = mirror[:idx]
            mirror = mirror[idx+3:]

            idx = mirror.find("/")
            host = mirror[:idx]
            mirror = mirror[idx+1:]

            idx = mirror.rfind("/dists/")
            suite = mirror[idx+7:]
            mirror = mirror[:idx]

            mirror_data = "--method=%s --host=%s --root=%s --dist=%s " % ( method , host , mirror , suite )

            # FIXME : flags should come from repo instead of being hardcoded

            rflags = "--passive --nocleanup"
            for x in repo.yumopts:
                if repo.yumopts[x]:
                    rflags += " %s %s" % ( x , repo.yumopts[x] )
                else:
                    rflags += " %s" % x
            cmd = "%s %s %s %s" % (mirror_program, rflags, mirror_data, dest_path)
            if repo.arch == "src":
                cmd = "%s --source" % cmd
            else:
                arch = repo.arch
                if arch == "x86":
                   arch = "i386" # FIX potential arch errors
                if arch == "x86_64":
                   arch = "amd64" # FIX potential arch errors
                cmd = "%s --nosource -a %s" % (cmd, arch)
                    
            # Set's an environment variable for subprocess, otherwise debmirror will fail
            # as it needs this variable to exist.
            # FIXME: might this break anything? So far it doesn't
            os.putenv("HOME", "/var/lib/cobbler")

            rc = utils.subprocess_call(self.logger, cmd)
            if rc !=0:
                utils.die(self.logger,"cobbler reposync failed")

       
    def create_local_file(self, dest_path, repo, output=True):
        """

Creates Yum config files for use by reposync

Two uses:
(A) output=True, Create local files that can be used with yum on provisioned clients to make use of this mirror.
(B) output=False, Create a temporary file for yum to feed into yum for mirroring
"""
    
        # the output case will generate repo configuration files which are usable
        # for the installed systems. They need to be made compatible with --server-override
        # which means they are actually templates, which need to be rendered by a cobbler-sync
        # on per profile/system basis.

        if output:
            fname = os.path.join(dest_path,"config.repo")
        else:
            fname = os.path.join(dest_path, "%s.repo" % repo.name)
        self.logger.debug("creating: %s" % fname)
        if not os.path.exists(dest_path):
            utils.mkdir(dest_path)
        config_file = open(fname, "w+")
        config_file.write("[%s]\n" % repo.name)
        config_file.write("name=%s\n" % repo.name)
        optenabled = False
        optgpgcheck = False
        if output:
            if repo.mirror_locally:
                line = "baseurl=http://${server}/cobbler/repo_mirror/%s\n" % (repo.name)
            else:
                mstr = repo.mirror
                if mstr.startswith("/"):
                    mstr = "file://%s" % mstr
                line = "baseurl=%s\n" % mstr
  
            config_file.write(line)
            # user may have options specific to certain yum plugins
            # add them to the file
            for x in repo.yumopts:
                config_file.write("%s=%s\n" % (x, repo.yumopts[x]))
                if x == "enabled":
                    optenabled = True
                if x == "gpgcheck":
                    optgpgcheck = True
        else:
            mstr = repo.mirror
            if mstr.startswith("/"):
                mstr = "file://%s" % mstr
            line = "baseurl=%s\n" % mstr
            if self.settings.http_port not in (80, '80'):
                http_server = "%s:%s" % (self.settings.server, self.settings.http_port)
            else:
                http_server = self.settings.server
            line = line.replace("@@server@@",http_server)
            config_file.write(line)
        if not optenabled:
            config_file.write("enabled=1\n")
        config_file.write("priority=%s\n" % repo.priority)
        # FIXME: potentially might want a way to turn this on/off on a per-repo basis
        if not optgpgcheck:
            config_file.write("gpgcheck=0\n")
        config_file.close()
        return fname

    # ==================================================================================

    def update_permissions(self, repo_path):
        """
Verifies that permissions and contexts after an rsync are as expected.
Sending proper rsync flags should prevent the need for this, though this is largely
a safeguard.
"""
        # all_path = os.path.join(repo_path, "*")
        cmd1 = "chown -R root:apache %s" % repo_path
        utils.subprocess_call(self.logger, cmd1)

        cmd2 = "chmod -R 755 %s" % repo_path
        utils.subprocess_call(self.logger, cmd2)
Something went wrong with that request. Please try again.