| #!/usr/bin/env python |
| |
| # Copyright 2017-present Open Networking Foundation |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| # imagebuilder.py |
| # rebuilds/fetches docker container images per their git status in repo |
| # in addition to docker, needs `sudo apt-get install python-git` |
| |
| import argparse |
| import datetime |
| import git |
| import json |
| import logging |
| import os |
| import re |
| import string |
| import sys |
| import tarfile |
| import tempfile |
| import time |
| import xml.etree.ElementTree as ET |
| import yaml |
| |
| global args |
| global conf |
| global build_tag |
| global buildable_images |
| global pull_only_images |
| |
| |
| def setup_logging(name=None, logfile=False): |
| global args |
| |
| if name: |
| log = logging.getLogger("-".join([__name__, name])) |
| else: |
| log = logging.getLogger(__name__) |
| |
| slh = logging.StreamHandler(sys.stdout) |
| slh.setFormatter(logging.Formatter(logging.BASIC_FORMAT)) |
| slh.setLevel(logging.DEBUG) |
| |
| log.addHandler(slh) |
| |
| # secondary logging to a file, always DEBUG level |
| if logfile: |
| fn = os.path.join(conf.logdir, "%s.log" % name) |
| flh = logging.FileHandler(fn) |
| flh.setFormatter(logging.Formatter(logging.BASIC_FORMAT)) |
| flh.setLevel(logging.DEBUG) |
| log.addHandler(flh) |
| |
| return log |
| |
| |
| LOG = setup_logging() |
| |
| |
| def parse_args(): |
| global args |
| |
| parser = argparse.ArgumentParser() |
| |
| parser.add_argument('-c', '--container_list', default='docker_images.yml', |
| type=argparse.FileType('r'), |
| help="YAML Config and master container list") |
| |
| # -f is optional, so using type=argparse.FileType is problematic |
| parser.add_argument('-f', '--filter_images', default=None, action='store', |
| help="YAML file restricting images to build/fetch") |
| |
| parser.add_argument('-a', '--actions_taken', default=None, |
| help="Save a YAML file with actions taken during run") |
| |
| group = parser.add_mutually_exclusive_group() |
| group.add_argument('-b', '--build', action="store_true", default=False, |
| help="Build (don't fetch) all internal images, nocache") |
| group.add_argument('-p', '--pull', action="store_true", default=False, |
| help="Only pull containers, fail if build required") |
| |
| parser.add_argument('-d', '--dry_run', action="store_true", |
| help="Don't build/fetch anything") |
| |
| parser.add_argument('-g', '--graph', default=None, |
| help="Filename for DOT graph file of image dependency") |
| |
| parser.add_argument('-l', '--build_log_dir', action="store", |
| help="Log build output to this dir if set") |
| |
| parser.add_argument('-r', '--repo_root', default="..", action="store", |
| help="Repo root directory") |
| |
| parser.add_argument('-t', '--build_tag', default=None, action="store", |
| help="tag all images built/pulled using this tag") |
| |
| parser.add_argument('-v', '--verbosity', action='count', default=1, |
| help="Repeat to increase log level") |
| |
| args = parser.parse_args() |
| |
| if args.verbosity > 1: |
| LOG.setLevel(logging.DEBUG) |
| else: |
| LOG.setLevel(logging.INFO) |
| |
| |
| def load_config(): |
| global args |
| global conf |
| global buildable_images |
| global pull_only_images |
| global build_tag |
| |
| try: |
| cl_abs = os.path.abspath(args.container_list.name) |
| LOG.info("Master container list file: %s" % cl_abs) |
| |
| conf = yaml.safe_load(args.container_list) |
| except yaml.YAMLError: |
| LOG.exception("Problem loading container list file") |
| sys.exit(1) |
| |
| if args.build_tag: |
| build_tag = args.build_tag |
| else: |
| build_tag = conf['docker_build_tag'] |
| |
| if args.filter_images is None: |
| buildable_images = conf['buildable_images'] |
| pull_only_images = conf['pull_only_images'] |
| else: |
| fi_abs = os.path.abspath(args.filter_images) |
| |
| LOG.info("Filtering image list per 'docker_image_whitelist' in: %s" % |
| fi_abs) |
| try: |
| fi_fh = open(fi_abs, 'r') |
| filter_list = yaml.safe_load(fi_fh) |
| fi_fh.close() |
| |
| if 'docker_image_whitelist' not in filter_list: |
| LOG.error("No 'docker_image_whitelist' defined in: %s" % |
| fi_abs) |
| sys.exit(1) |
| |
| # fail if filter list specifies tags |
| for f_i in filter_list['docker_image_whitelist']: |
| (name, tag) = split_name(f_i) |
| if tag: |
| LOG.error("filter list may not be tagged") |
| sys.exit(1) |
| |
| buildable_images = [img for img in conf['buildable_images'] |
| if split_name(img['name'])[0] |
| in filter_list['docker_image_whitelist']] |
| |
| pull_only_images = [img for img in conf['pull_only_images'] |
| if split_name(img)[0] |
| in filter_list['docker_image_whitelist']] |
| |
| except: |
| LOG.exception("Problem with filter list file") |
| sys.exit(1) |
| |
| |
| def split_name(input_name): |
| """ split a docker image name in the 'name:tag' format into components """ |
| |
| name = input_name |
| tag = None |
| |
| # split name:tag if given in combined format |
| name_tag_split = string.split(input_name, ":") |
| |
| if len(name_tag_split) > 1: # has tag, return separated version |
| name = name_tag_split[0] |
| tag = name_tag_split[1] |
| |
| return (name, tag) |
| |
| |
| class RepoRepo(): |
| """ git repo managed by repo tool""" |
| |
| manifest_branch = "" |
| |
| def __init__(self, name, path, remote): |
| |
| self.name = name |
| self.path = path |
| self.remote = remote |
| self.git_url = "%s%s" % (remote, name) |
| |
| try: |
| self.git_repo_o = git.Repo(self.abspath()) |
| LOG.debug("Repo - %s, path: %s" % (name, path)) |
| |
| self.head_commit = self.git_repo_o.head.commit.hexsha |
| LOG.debug(" head commit: %s" % self.head_commit) |
| |
| commit_t = time.gmtime(self.git_repo_o.head.commit.committed_date) |
| self.head_commit_t = time.strftime("%Y-%m-%dT%H:%M:%SZ", commit_t) |
| LOG.debug(" commit date: %s" % self.head_commit_t) |
| |
| self.clean = not self.git_repo_o.is_dirty(untracked_files=True) |
| LOG.debug(" clean: %s" % self.clean) |
| |
| # list of untracked files (expensive operation) |
| self.untracked_files = self.git_repo_o.untracked_files |
| for u_file in self.untracked_files: |
| LOG.debug(" Untracked: %s" % u_file) |
| |
| except Exception: |
| LOG.exception("Error with git repo: %s" % name) |
| sys.exit(1) |
| |
| def abspath(self): |
| global args |
| return os.path.abspath(os.path.join(args.repo_root, self.path)) |
| |
| def path_clean(self, test_path, branch=""): |
| """ Is working tree on branch and no untracked files in path? """ |
| global conf |
| |
| if not branch: |
| branch = self.manifest_branch |
| |
| LOG.debug(" Looking for changes in path: %s" % test_path) |
| |
| p_clean = True |
| |
| # diff between branch head and working tree (None) |
| branch_head = self.git_repo_o.commit(branch) |
| diff = branch_head.diff(None, paths=test_path) |
| |
| if diff: |
| p_clean = False |
| |
| for diff_obj in diff: |
| LOG.debug(" file not on branch: %s" % diff_obj) |
| |
| # remove . to compare paths using .startswith() |
| if test_path == ".": |
| test_path = "" |
| |
| for u_file in self.untracked_files: |
| if u_file.startswith(test_path): |
| LOG.debug(" untracked file in path: %s" % u_file) |
| p_clean = False |
| |
| return p_clean |
| |
| |
| class RepoManifest(): |
| """ parses manifest XML file used by repo tool""" |
| |
| def __init__(self): |
| global args |
| global conf |
| |
| self.manifest_xml = {} |
| self.repos = {} |
| self.branch = "" |
| |
| self.manifest_file = os.path.abspath( |
| os.path.join(args.repo_root, |
| ".repo/manifest.xml")) |
| |
| LOG.info("Loading manifest file: %s" % self.manifest_file) |
| |
| try: |
| tree = ET.parse(self.manifest_file) |
| self.manifest_xml = tree.getroot() |
| except Exception: |
| LOG.exception("Error loading repo manifest") |
| sys.exit(1) |
| |
| # Find the default branch |
| default = self.manifest_xml.find('default') |
| self.branch = "%s/%s" % (default.attrib['remote'], |
| default.attrib['revision']) |
| |
| # Find the remote URL for these repos |
| remote = self.manifest_xml.find('remote') |
| self.remote = remote.attrib['review'] |
| |
| LOG.info("Manifest is on branch '%s' with remote '%s'" % |
| (self.branch, self.remote)) |
| |
| project_repos = {} |
| |
| for project in self.manifest_xml.iter('project'): |
| repo_name = project.attrib['name'] |
| rel_path = project.attrib['path'] |
| abs_path = os.path.abspath(os.path.join(args.repo_root, |
| project.attrib['path'])) |
| |
| if os.path.isdir(abs_path): |
| project_repos[repo_name] = rel_path |
| else: |
| LOG.debug("Repo in manifest but not checked out: %s" % |
| repo_name) |
| |
| for repo_name, repo_path in project_repos.iteritems(): |
| self.repos[repo_name] = RepoRepo(repo_name, repo_path, self.remote) |
| self.repos[repo_name].manifest_branch = self.branch |
| |
| def get_repo(self, repo_name): |
| return self.repos[repo_name] |
| |
| |
| # DockerImage Status Constants |
| |
| DI_UNKNOWN = 'unknown' # unknown status |
| DI_EXISTS = 'exists' # already exists in docker, has an image_id |
| |
| DI_BUILD = 'build' # needs to be built |
| DI_FETCH = 'fetch' # needs to be fetched (pulled) |
| DI_ERROR = 'error' # build or other fatal failure |
| |
| |
| class DockerImage(): |
| |
| def __init__(self, name, repo_name=None, repo_d=None, path=".", |
| context=".", dockerfile='Dockerfile', labels=None, |
| tags=None, image_id=None, components=None, status=DI_UNKNOWN): |
| |
| LOG.debug("New DockerImage object from name: %s" % name) |
| |
| # name to pull as, usually what is provided on creation. |
| # May be changed by create_tags |
| self.raw_name = name |
| |
| # Python's mutable defaults is a landmine |
| if labels is None: |
| self.labels = {} |
| else: |
| self.labels = labels |
| |
| self.repo_name = repo_name |
| self.repo_d = repo_d |
| self.path = path |
| self.context = context |
| self.dockerfile = dockerfile |
| self.tags = [] # tags are added to this later in __init__ |
| self.image_id = image_id |
| self.components = components |
| self.status = status |
| |
| self.parent_names = [] # names of parents from _find_parent_names() |
| self.parents = [] # list of parent DockerImage object |
| self.children = [] # list of child DockerImage objects |
| |
| # split name:tag if given in combined format |
| (image_name, image_tag) = split_name(name) |
| if image_tag: # has tag |
| self.name = image_name |
| self.tags.append(image_tag) |
| else: # no tag |
| self.name = image_name |
| |
| # Add the build tag if exists |
| if build_tag not in self.tags: |
| self.tags.append(build_tag) |
| |
| # split names from tag list |
| if tags is not None: |
| for tag in tags: |
| thistag = "" |
| (tag_name, tag_tag) = split_name(tag) |
| if tag_tag: # has name also, use just tag |
| thistag = tag_tag |
| else: # just a bare tag |
| thistag = tag_name |
| |
| if thistag not in self.tags: # don't duplicate tags |
| self.tags.append(thistag) |
| |
| # self.clean only applies to this container |
| self.clean = self._context_clean() |
| self._find_parent_names() |
| |
| def __str__(self): |
| return self.name |
| |
| def buildable(self): |
| """ Can this image be built from a Dockerfile? """ |
| if self.repo_name: # has a git repo to be built from |
| return True |
| return False |
| |
| def _context_clean(self): |
| """ Determine if this is repo and context is clean """ |
| |
| if self.buildable(): |
| |
| # check if on master branch |
| repo_clean = self.repo_d.clean |
| |
| # only check the Docker context for cleanliness |
| context_path = os.path.normpath( |
| os.path.join(self.path, self.context)) |
| context_clean = self.repo_d.path_clean(context_path) |
| |
| # check of subcomponents are clean |
| components_clean = self.components_clean() |
| |
| LOG.debug(" Build Context Cleanliness - " |
| "repo: %s, context: %s, components: %s" % |
| (repo_clean, context_clean, components_clean)) |
| |
| if context_clean and repo_clean and components_clean: |
| return True |
| else: |
| return False |
| |
| return True # unbuildable images are clean |
| |
| def parents_clean(self): |
| """ if all parents are clean """ |
| |
| if self.buildable(): |
| if not self.clean: |
| return False |
| else: |
| for parent in self.parents: |
| if not parent.parents_clean(): |
| return False |
| else: |
| return True |
| |
| return True # unbuildable images are clean |
| |
| def compare_labels(self, other_labels): |
| """ Returns True if image label-schema.org labels match dict """ |
| |
| comparable_labels_re = [ |
| r".*name$", |
| r".*vcs-url$", |
| r".*vcs-ref$", |
| r".*version$", |
| ] |
| |
| for clr in comparable_labels_re: # loop on all comparable labels |
| for label in self.labels: # loop on all labels |
| if re.match(clr, label) is not None: # if label matches re |
| # and label exists in other, and values are same |
| if label in other_labels and \ |
| self.labels[label] == other_labels[label]: |
| pass # continue through loop |
| else: |
| LOG.info("Non-matching label: %s" % label) |
| return False # False when first difference found |
| |
| LOG.debug(" All labels matched") |
| return True # only when every label matches |
| |
| def same_name(self, other_name): |
| """ compare image name (possibly with tag) against image name/tag """ |
| |
| (o_name, o_tag) = split_name(other_name) |
| |
| if o_tag is None and self.name == o_name: |
| return True |
| elif self.name == o_name and o_tag in self.tags: |
| return True |
| |
| return False |
| |
| def components_clean(self): |
| |
| if self.buildable() and self.components is not None: |
| for component in self.components: |
| if not component['repo_d'].clean or \ |
| not component['repo_d'].path_clean(component['path']): |
| return False |
| |
| return True |
| |
| def component_labels(self): |
| """ returns a dict of labels for subcomponents """ |
| |
| if self.buildable() and self.components is not None: |
| |
| comp_l = {} |
| |
| for component in self.components: |
| |
| LOG.debug(" component %s generating child labels" % |
| component['repo_name']) |
| |
| prefix = "org.opencord.component.%s." % component['repo_name'] |
| |
| comp_l[prefix + "vcs-url"] = component['repo_d'].git_url |
| |
| if component['repo_d'].clean and \ |
| component['repo_d'].path_clean(component['path']): |
| clean = True |
| else: |
| clean = False |
| |
| if clean: |
| comp_l[prefix + "version"] = self.repo_d.manifest_branch |
| comp_l[prefix + "vcs-ref"] = \ |
| component['repo_d'].head_commit |
| else: |
| comp_l[prefix + "version"] = "dirty" |
| comp_l[prefix + "vcs-ref"] = "" |
| |
| return comp_l |
| |
| return None |
| |
| def child_labels(self, repo_list=None): |
| """ return a dict of labels to apply to child images """ |
| |
| LOG.debug(" Generating child labels from parent: %s" % self.name) |
| |
| # only create labels when they haven't already been created |
| if repo_list is None: |
| repo_list = [] |
| |
| LOG.debug(" Already labeled with: %s" % ", ".join(repo_list)) |
| |
| cl = {} |
| |
| if self.buildable() and self.repo_name not in repo_list: |
| |
| LOG.debug(" Adding parent labels from repo: %s" % self.repo_name) |
| |
| prefix = "org.opencord.component.%s." % self.repo_name |
| |
| cl[prefix + "vcs-url"] = self.repo_d.git_url |
| |
| if self.clean: |
| cl[prefix + "version"] = self.repo_d.manifest_branch |
| cl[prefix + "vcs-ref"] = self.repo_d.head_commit |
| else: |
| cl[prefix + "version"] = "dirty" |
| cl[prefix + "vcs-ref"] = "" |
| |
| repo_list.append(self.repo_name) |
| |
| # include component labels if present |
| if self.components is not None: |
| cl.update(self.component_labels()) |
| |
| # recursively find labels up the parent chain |
| if self.parents is not None: |
| for parent in self.parents: |
| cl.update(parent.child_labels(repo_list)) |
| |
| return cl |
| |
| def create_labels(self): |
| """ Create label-schema.org labels for image """ |
| |
| if self.buildable(): |
| |
| LOG.debug("Creating labels for: %s" % self.name) |
| |
| self.labels['org.label-schema.name'] = self.name |
| self.labels['org.label-schema.schema-version'] = "1.0" |
| |
| # org.label-schema.build-date |
| time_now = datetime.datetime.utcnow() |
| build_date = time_now.strftime("%Y-%m-%dT%H:%M:%SZ") |
| self.labels['org.label-schema.build-date'] = build_date |
| |
| # git version related labels |
| self.labels['org.label-schema.vcs-url'] = self.repo_d.git_url |
| |
| if self.clean: |
| self.labels['org.label-schema.version'] = \ |
| self.repo_d.manifest_branch |
| self.labels['org.label-schema.vcs-ref'] = \ |
| self.repo_d.head_commit |
| self.labels['org.opencord.vcs-commit-date'] = \ |
| self.repo_d.head_commit_t |
| else: |
| self.labels['org.label-schema.version'] = "dirty" |
| self.labels['org.label-schema.vcs-ref'] = "" |
| |
| # include component labels if present |
| if self.components is not None: |
| self.labels.update(self.component_labels()) |
| |
| def create_tags(self): |
| """ Create docker tags as needed """ |
| |
| if self.buildable(): |
| LOG.debug("Creating tags for image: %s" % self.name) |
| |
| # if clean and parents clean, add tags for branch/commit |
| if self.parents_clean(): |
| if build_tag not in self.tags: |
| self.tags.append(build_tag) |
| |
| commit_tag = self.repo_d.head_commit |
| if commit_tag not in self.tags: |
| self.tags.append(commit_tag) |
| |
| # pulling is done via raw_name, set tag to commit |
| self.raw_name = "%s:%s" % (self.name, commit_tag) |
| |
| LOG.debug("All tags: %s" % ", ".join(self.tags)) |
| |
| def _find_parent_names(self): |
| """ set self.parent_names using Dockerfile FROM lines """ |
| |
| if self.buildable(): |
| # read contents of Dockerfile into df |
| with open(self.dockerfile_abspath()) as dfh: |
| dfl = dfh.readlines() |
| |
| parent_names = [] |
| frompatt = re.compile(r'^FROM\s+([\w/_:.-]+)', re.MULTILINE) |
| |
| for line in dfl: |
| fromline = re.search(frompatt, line) |
| if fromline: |
| parent_names.append(fromline.group(1)) |
| |
| self.parent_names = parent_names # may have tag |
| |
| LOG.debug(" Parents: %s" % ", ".join(self.parent_names)) |
| |
| def dockerfile_abspath(self): |
| """ returns absolute path to Dockerfile for this image """ |
| |
| if self.buildable(): |
| return os.path.join(self.repo_d.abspath(), |
| self.path, self.dockerfile) |
| else: |
| return None |
| |
| def dockerfile_rel_path(self): |
| """ returns the path relative to the context of the Dockerfile """ |
| |
| if self.buildable(): |
| if self.context is ".": |
| return self.dockerfile |
| else: |
| return os.path.normpath(os.path.join(self.path, |
| self.dockerfile)) |
| else: |
| return None |
| |
| def context_tarball(self): |
| """ returns a filehandle to a tarball (tempfile) for the image """ |
| |
| if self.buildable(): |
| |
| context_path = os.path.normpath( |
| os.path.join(self.repo_d.abspath(), |
| self.path, self.context)) |
| |
| LOG.info("Creating context tarball of path: %s" % context_path) |
| |
| t_fh = tempfile.NamedTemporaryFile() |
| t = tarfile.open(mode='w', fileobj=t_fh, dereference=True) |
| |
| # exclude git directories anywhere in the context |
| exclusion_list = ['**/.git'] |
| |
| docker_ignore = os.path.join(context_path, '.dockerignore') |
| if os.path.exists(docker_ignore): |
| for line in open(docker_ignore).readlines(): |
| # slightly out of spec, we allow whitespace before comments |
| # https://docs.docker.com/engine/reference/builder/#dockerignore-file |
| if line.strip()[0] is not '#': |
| exclusion_list.append(line.strip().rstrip('\/')) |
| |
| LOG.debug("Exclusion list: %s" % exclusion_list) |
| |
| # see docker-py source for context |
| for path in sorted( |
| DockerUtils.exclude_paths(context_path, exclusion_list)): |
| t.add(os.path.join(context_path, path), |
| arcname=path, |
| recursive=False) |
| |
| # add sub-components to tarball if required |
| if self.components is not None: |
| for component in self.components: |
| c_ctx_p = os.path.normpath( |
| os.path.join(component['repo_d'].abspath(), |
| component['path'])) |
| |
| LOG.info("Adding component %s at context %s" % |
| (component['repo_name'], c_ctx_p)) |
| |
| # walk component source path |
| for path in sorted( |
| DockerUtils.exclude_paths(c_ctx_p, exclusion_list)): |
| |
| # path to where to put files in the archive |
| cf_dest = os.path.normpath( |
| os.path.join(component['dest'], path)) |
| |
| t.add(os.path.join(c_ctx_p, path), |
| arcname=cf_dest, |
| recursive=False) |
| |
| # t.list() # prints all files in tarball |
| t.close() |
| t_fh.seek(0) |
| return t_fh |
| |
| else: |
| return None |
| |
| def buildargs(self): |
| """ returns array of labels in docker buildargs compliant format """ |
| ba_a = {} |
| |
| for label_k in self.labels: |
| ba_re = re.compile(r'\W') # non alpha/num/_ chars |
| ba_label = ba_re.sub('_', label_k) |
| ba_a[ba_label] = self.labels[label_k] |
| |
| return ba_a |
| |
| |
| class DockerBuilder(): |
| |
| def __init__(self, repo_manifest): |
| |
| global buildable_images |
| global pull_only_images |
| |
| self.rm = repo_manifest |
| self.dc = None # Docker Client object |
| |
| self.images = [] |
| |
| # arrays of images, used for write_actions |
| self.preexisting = [] |
| self.obsolete = [] |
| self.pulled = [] |
| self.failed_pull = [] |
| self.obsolete_pull = [] |
| self.built = [] |
| self.failed_build = [] |
| |
| # create dict of images, setting defaults |
| for image in buildable_images: |
| |
| repo_d = self.rm.get_repo(image['repo']) |
| |
| if "components" in image: |
| components = [] |
| |
| for component in image['components']: |
| comp = {} |
| comp['repo_name'] = component['repo'] |
| comp['repo_d'] = self.rm.get_repo(component['repo']) |
| comp['dest'] = component['dest'] |
| comp['path'] = component.get('path', '.') |
| components.append(comp) |
| else: |
| components = None |
| |
| # set the full name in case this is pulled |
| full_name = "%s:%s" % (image['name'], build_tag) |
| |
| img_o = DockerImage(full_name, image['repo'], repo_d, |
| image.get('path', '.'), |
| image.get('context', '.'), |
| image.get('dockerfile', 'Dockerfile'), |
| components=components) |
| |
| self.images.append(img_o) |
| |
| # add misc images |
| for misc_image in pull_only_images: |
| img_o = DockerImage(misc_image) |
| self.images.append(img_o) |
| |
| if not args.dry_run: |
| self._docker_connect() |
| |
| self.create_dependency() |
| |
| if not args.build: # if forcing build, don't use preexisting |
| self.find_preexisting() |
| |
| if args.graph is not None: |
| self.dependency_graph(args.graph) |
| |
| self.process_images() |
| |
| if args.actions_taken is not None: |
| self.write_actions_file(args.actions_taken) |
| |
| def _docker_connect(self): |
| """ Connect to docker daemon """ |
| |
| try: |
| self.dc = DockerClient() |
| except requests.ConnectionError: |
| LOG.debug("Docker connection not available") |
| sys.exit(1) |
| |
| if self.dc.ping(): |
| LOG.debug("Docker server is responding") |
| else: |
| LOG.error("Unable to ping docker server") |
| sys.exit(1) |
| |
| def find_preexisting(self): |
| """ find images that already exist in Docker and mark """ |
| |
| if self.dc: |
| LOG.debug("Evaluating already built/fetched Docker images") |
| |
| # get list of images from docker |
| pe_images = self.dc.images() |
| |
| for pe_image in pe_images: |
| raw_tags = pe_image['RepoTags'] |
| |
| if raw_tags: |
| LOG.info("Preexisting Image - ID: %s, tags: %s" % |
| (pe_image['Id'], ",".join(raw_tags))) |
| |
| has_build_tag = False |
| for tag in raw_tags: |
| if build_tag in tag: |
| LOG.debug(" image has build_tag: %s" % build_tag) |
| has_build_tag = True |
| |
| base_name = raw_tags[0].split(":")[0] |
| image = self.find_image(base_name) |
| |
| # only evaluate images in the list of desired images |
| if image is not None: |
| |
| good_labels = image.compare_labels(pe_image['Labels']) |
| |
| if good_labels: |
| if has_build_tag: |
| LOG.info(" Image %s has up-to-date labels and" |
| " build_tag" % pe_image['Id']) |
| else: |
| LOG.info(" Image %s has up-to-date labels but" |
| " missing build_tag. Tagging image" |
| " with build_tag: %s" % |
| (pe_image['Id'], build_tag)) |
| |
| self.dc.tag(pe_image['Id'], image.name, |
| tag=build_tag) |
| |
| self.preexisting.append({ |
| 'id': pe_image['Id'], |
| 'tags': raw_tags, |
| 'base': image.name.split(":")[0], |
| }) |
| |
| image.image_id = pe_image['Id'] |
| image.status = DI_EXISTS |
| |
| else: # doesn't have good labels |
| |
| # if it has a build_tag, and a good image hasn't already been tagged |
| if has_build_tag and (image.status != DI_EXISTS): |
| LOG.info(" Image %s has obsolete labels and" |
| " build_tag, remove" % pe_image['Id']) |
| |
| # remove build_tag from image |
| name_bt = "%s:%s" % (base_name, build_tag) |
| self.dc.remove_image(name_bt, False, True) |
| |
| else: |
| LOG.info(" Image %s has obsolete labels, lacks" |
| " build_tag, ignore" % pe_image['Id']) |
| |
| self.obsolete.append({ |
| 'id': pe_image['Id'], |
| 'tags': raw_tags, |
| }) |
| |
| def find_image(self, image_name): |
| """ return image object matching name """ |
| LOG.debug(" attempting to find image for: %s" % image_name) |
| |
| for image in self.images: |
| if image.same_name(image_name): |
| LOG.debug(" found a match: %s" % image.raw_name) |
| return image |
| return None |
| |
| def create_dependency(self): |
| """ set parent/child links for images """ |
| |
| # List of lists of parents images. Done in two steps for clarity |
| lol_of_parents = [img.parent_names for img in self.images |
| if img.parent_names is not []] |
| |
| # flat list of all parent image names, with dupes |
| parents_with_dupes = [parent for parent_sublist in lol_of_parents |
| for parent in parent_sublist] |
| |
| # remove duplicates |
| parents = list(set(parents_with_dupes)) |
| |
| LOG.info("All parent images: %s" % ", ".join(parents)) |
| |
| # list of "external parents", ones not built internally |
| external_parents = [] |
| |
| for parent_name in parents: |
| LOG.debug("Evaluating parent image: %s" % parent_name) |
| internal_parent = False |
| |
| # match on p_name, without tag |
| (p_name, p_tag) = split_name(parent_name) |
| |
| for image in self.images: |
| if image.same_name(p_name): # internal image is a parent |
| internal_parent = True |
| LOG.debug(" Internal parent: %s" % image.name) |
| break |
| |
| if not internal_parent: # parent is external |
| LOG.debug(" External parent: %s" % parent_name) |
| external_parents.append(parent_name) |
| |
| # add unique external parents to image list |
| for e_p_name in set(external_parents): |
| LOG.debug(" Creating external parent image object: %s" % e_p_name) |
| img_o = DockerImage(e_p_name) |
| self.images.append(img_o) |
| |
| # now that all images (including parents) are in list, associate them |
| for image in filter(lambda img: img.parent_names is not [], |
| self.images): |
| |
| LOG.debug("Associating image: %s" % image.name) |
| |
| for parent_name in image.parent_names: |
| |
| parent = self.find_image(parent_name) |
| image.parents.append(parent) |
| |
| if parent is not None: |
| LOG.debug(" internal image '%s' is parent of '%s'" % |
| (parent.name, image.name)) |
| parent.children.append(image) |
| |
| else: |
| LOG.debug(" external image '%s' is parent of '%s'" % |
| (image.parent_name, image.name)) |
| |
| # loop again now that parents are linked to create labels |
| for image in self.images: |
| image.create_labels() |
| image.create_tags() |
| |
| # if image has parent, get labels from parent(s) |
| if image.parents is not None: |
| for parent in image.parents: |
| LOG.debug("Adding parent labels from %s to child %s" % |
| (parent.name, image.name)) |
| |
| # don't create component labels for same repo as image |
| repo_list = [image.repo_name] |
| image.labels.update(parent.child_labels(repo_list)) |
| |
| def dependency_graph(self, graph_fn): |
| """ save a DOT dependency graph to a file """ |
| |
| graph_fn_abs = os.path.abspath(graph_fn) |
| |
| LOG.info("Saving DOT dependency graph to: %s" % graph_fn_abs) |
| |
| try: |
| import graphviz |
| except ImportError: |
| LOG.error('graphviz pip module not found') |
| raise |
| |
| dg = graphviz.Digraph(comment='Image Dependency Graph', |
| graph_attr={'rankdir': 'LR'}) |
| |
| component_nodes = [] |
| |
| # Use raw names, so they match with what's in Dockerfiles |
| # delete colons as python graphviz module breaks with them |
| for image in self.images: |
| name_g = image.raw_name.replace(':', '\n') |
| dg.node(name_g) |
| |
| if image.parents is not None: |
| for parent in image.parents: |
| name_p = parent.raw_name.replace(':', '\n') |
| dg.edge(name_p, name_g) |
| |
| if image.components is not None: |
| for component in image.components: |
| name_c = "component - %s" % component['repo_name'] |
| if name_c not in component_nodes: |
| dg.node(name_c) |
| component_nodes.append(name_c) |
| dg.edge(name_c, name_g, "", {'style': 'dashed'}) |
| |
| with open(graph_fn_abs, 'w') as g_fh: |
| g_fh.write(dg.source) |
| |
| def write_actions_file(self, actions_fn): |
| |
| actions_fn_abs = os.path.abspath(actions_fn) |
| |
| LOG.info("Saving actions as YAML to: %s" % actions_fn_abs) |
| |
| actions = { |
| "ib_pulled": self.pulled, |
| "ib_built": self.built, |
| "ib_preexisting_images": self.preexisting, |
| "ib_obsolete_images": self.obsolete, |
| "ib_failed_pull": self.failed_pull, |
| "ib_obsolete_pull": self.obsolete_pull, |
| "ib_failed_build": self.failed_build, |
| } |
| |
| with open(actions_fn_abs, 'w') as a_fh: |
| yaml.safe_dump(actions, a_fh) |
| LOG.debug(yaml.safe_dump(actions)) |
| |
| def process_images(self): |
| |
| """ determine whether to build/fetch images """ |
| # upstream images (have no parents), must be fetched |
| must_fetch_a = filter(lambda img: not img.parents, self.images) |
| |
| for image in must_fetch_a: |
| if image.status is not DI_EXISTS: |
| image.status = DI_FETCH |
| |
| # images that can be built or fetched (have parents) |
| b_or_f_a = filter(lambda img: img.parents, self.images) |
| |
| for image in b_or_f_a: |
| if not image.parents_clean() or args.build: |
| # must be built if not clean |
| image.status = DI_BUILD |
| elif image.status is not DI_EXISTS: |
| # try to fetch if clean and doesn't exist |
| image.status = DI_FETCH |
| # otherwise, image is clean and exists (image.status == DI_EXISTS) |
| |
| c_and_e_a = filter(lambda img: img.status is DI_EXISTS, self.images) |
| LOG.info("Preexisting and clean images: %s" % |
| ", ".join(c.name for c in c_and_e_a)) |
| |
| upstream_a = filter(lambda img: (img.status is DI_FETCH and |
| not img.parents), self.images) |
| LOG.info("Upstream images that must be fetched: %s" % |
| ", ".join(u.raw_name for u in upstream_a)) |
| |
| fetch_a = filter(lambda img: (img.status is DI_FETCH and |
| img.parents), self.images) |
| LOG.info("Clean, buildable images to attempt to fetch: %s" % |
| ", ".join(f.raw_name for f in fetch_a)) |
| |
| build_a = filter(lambda img: img.status is DI_BUILD, self.images) |
| LOG.info("Buildable images, due to unclean context or parents: %s" % |
| ", ".join(b.raw_name for b in build_a)) |
| |
| # OK to fetch upstream in any case as they should reduce number of |
| # layers pulled/built later |
| |
| for image in upstream_a: |
| if not self._fetch_image(image): |
| LOG.error("Unable to fetch upstream image: %s" % |
| image.raw_name) |
| sys.exit(1) |
| |
| # fetch if not forcing the build of all images |
| if not args.build: |
| fetch_sort = sorted(fetch_a, key=(lambda img: len(img.children)), |
| reverse=True) |
| |
| for image in fetch_sort: |
| if not self._fetch_image(image): |
| # if didn't fetch, build |
| image.status = DI_BUILD |
| |
| while True: |
| buildable_images = self.get_buildable() |
| |
| if buildable_images and args.pull: |
| LOG.error("Images must be built, but --pull is specified") |
| exit(1) |
| |
| if buildable_images: |
| for image in buildable_images: |
| self._build_image(image) |
| else: |
| LOG.debug("No more images to build, ending build loop") |
| break |
| |
| def get_buildable(self): |
| """ Returns list of images that can be built""" |
| |
| buildable = [] |
| |
| for image in filter(lambda img: img.status is DI_BUILD, self.images): |
| for parent in image.parents: |
| if parent.status is DI_EXISTS: |
| if image not in buildable: # build once if two parents |
| buildable.append(image) |
| |
| LOG.debug("Buildable images: %s" % |
| ', '.join(image.name for image in buildable)) |
| |
| return buildable |
| |
| def tag_image(self, image): |
| """ Applies tags to an image """ |
| |
| for tag in image.tags: |
| |
| LOG.info("Tagging id: '%s', repo: '%s', tag: '%s'" % |
| (image.image_id, image.name, tag)) |
| |
| if self.dc is not None: |
| self.dc.tag(image.image_id, image.name, tag=tag) |
| |
| def _fetch_image(self, image): |
| |
| LOG.info("Attempting to fetch docker image: %s" % image.raw_name) |
| |
| if self.dc is not None: |
| try: |
| for stat_json in self.dc.pull(image.raw_name, |
| stream=True): |
| |
| # sometimes Docker's JSON is dirty, per: |
| # https://github.com/docker/docker-py/pull/1081/ |
| stat_s = stat_json.strip() |
| stat_list = stat_s.split("\r\n") |
| |
| for s_j in stat_list: |
| stat_d = json.loads(s_j) |
| |
| if 'stream' in stat_d: |
| for stat_l in stat_d['stream'].split('\n'): |
| LOG.debug(stat_l) |
| |
| if 'status' in stat_d: |
| for stat_l in stat_d['status'].split('\n'): |
| noisy = ["Extracting", "Downloading", |
| "Waiting", "Download complete", |
| "Pulling fs layer", "Pull complete", |
| "Verifying Checksum", |
| "Already exists"] |
| if stat_l in noisy: |
| LOG.debug(stat_l) |
| else: |
| LOG.info(stat_l) |
| |
| if 'error' in stat_d: |
| LOG.error(stat_d['error']) |
| sys.exit(1) |
| |
| except (DockerErrors.NotFound, DockerErrors.ImageNotFound) as e: |
| LOG.warning("Image could not be pulled: %s , %s" % |
| (e.errno, e.strerror)) |
| |
| self.failed_pull.append({ |
| "tags": [image.raw_name, ], |
| }) |
| |
| if not image.parents: |
| LOG.error("Pulled image required to build, not available!") |
| sys.exit(1) |
| |
| return False |
| |
| except: |
| LOG.exception("Error pulling docker image") |
| |
| self.failed_pull.append({ |
| "tags": [image.raw_name, ], |
| }) |
| |
| return False |
| |
| # obtain the image_id by inspecting the pulled image. Seems unusual |
| # that the Docker API `pull` method doesn't provide it when the |
| # `build` method does |
| pulled_image = self.dc.inspect_image(image.raw_name) |
| |
| # check to make sure that image that was downloaded has the labels |
| # that we expect it to have, otherwise return false, trigger build |
| if not image.compare_labels( |
| pulled_image['ContainerConfig']['Labels']): |
| LOG.info("Tried fetching image %s, but labels didn't match" % |
| image.raw_name) |
| |
| self.obsolete_pull.append({ |
| "id": pulled_image['Id'], |
| "tags": pulled_image['RepoTags'], |
| }) |
| return False |
| |
| image.image_id = pulled_image['Id'] |
| LOG.info("Fetched image %s, id: %s" % |
| (image.raw_name, image.image_id)) |
| |
| self.pulled.append({ |
| "id": pulled_image['Id'], |
| "tags": pulled_image['RepoTags'], |
| "base": image.name.split(":")[0], |
| }) |
| |
| self.tag_image(image) |
| image.status = DI_EXISTS |
| return True |
| |
| def _build_image(self, image): |
| |
| LOG.info("Building docker image for %s" % image.raw_name) |
| |
| if self.dc is not None: |
| |
| build_tag = "%s:%s" % (image.name, image.tags[0]) |
| |
| buildargs = image.buildargs() |
| context_tar = image.context_tarball() |
| dockerfile = image.dockerfile_rel_path() |
| |
| for key, val in buildargs.iteritems(): |
| LOG.debug("Buildarg - %s : %s" % (key, val)) |
| |
| bl_path = "" |
| start_time = datetime.datetime.utcnow() |
| |
| if(args.build_log_dir): |
| bl_name = "%s_%s" % (start_time.strftime("%Y%m%dT%H%M%SZ"), |
| re.sub(r'\W', '_', image.name)) |
| bl_path = os.path.abspath( |
| os.path.join(args.build_log_dir, bl_name)) |
| |
| LOG.info("Build log: %s" % bl_path) |
| bl_fh = open(bl_path, 'w+', 0) # 0 = unbuffered writes |
| else: |
| bl_fh = None |
| |
| try: |
| LOG.info("Building image: %s" % image) |
| |
| for stat_d in self.dc.build(tag=build_tag, |
| buildargs=buildargs, |
| nocache=args.build, |
| custom_context=True, |
| fileobj=context_tar, |
| dockerfile=dockerfile, |
| rm=True, |
| forcerm=True, |
| pull=False, |
| stream=True, |
| decode=True): |
| |
| if 'stream' in stat_d: |
| |
| if bl_fh: |
| bl_fh.write(stat_d['stream'].encode('utf-8')) |
| |
| for stat_l in stat_d['stream'].split('\n'): |
| if(stat_l): |
| LOG.debug(stat_l) |
| if stat_d['stream'].startswith("Successfully built "): |
| siid = stat_d['stream'].split(' ')[2] |
| short_image_id = siid.strip() |
| LOG.debug("Short Image ID: %s" % short_image_id) |
| |
| if 'status' in stat_d: |
| for stat_l in stat_d['status'].split('\n'): |
| if(stat_l): |
| LOG.info(stat_l) |
| |
| if 'error' in stat_d: |
| LOG.error(stat_d['error']) |
| image.status = DI_ERROR |
| sys.exit(1) |
| |
| except: |
| LOG.exception("Error building docker image") |
| |
| self.failed_build.append({ |
| "tags": [build_tag, ], |
| }) |
| |
| return |
| |
| finally: |
| if(bl_fh): |
| bl_fh.close() |
| |
| # the image ID given by output isn't the full SHA256 id, so find |
| # and set it to the full one |
| built_image = self.dc.inspect_image(short_image_id) |
| image.image_id = built_image['Id'] |
| |
| end_time = datetime.datetime.utcnow() |
| duration = end_time - start_time # duration is a timedelta |
| |
| LOG.info("Built Image: %s, duration: %s, id: %s" % |
| (image.name, duration, image.image_id)) |
| |
| self.built.append({ |
| "id": image.image_id, |
| "tags": [build_tag, ], |
| "push_name": image.raw_name, |
| "build_log": bl_path, |
| "duration": duration.total_seconds(), |
| "base": image.name.split(":")[0], |
| }) |
| |
| self.tag_image(image) |
| image.status = DI_EXISTS |
| |
| |
| if __name__ == "__main__": |
| parse_args() |
| load_config() |
| |
| # only include docker module if not a dry run |
| if not args.dry_run: |
| try: |
| import requests |
| from distutils.version import LooseVersion |
| from docker import __version__ as docker_version |
| |
| # handle the docker-py v1 to v2 API differences |
| if LooseVersion(docker_version) >= LooseVersion('2.0.0'): |
| from docker import APIClient as DockerClient |
| else: |
| LOG.error("Unsupported python docker module - " |
| "remove docker-py 1.x, install docker 2.x") |
| sys.exit(1) |
| |
| from docker import utils as DockerUtils |
| from docker import errors as DockerErrors |
| |
| except ImportError: |
| LOG.error("Unable to load python docker module (dry run?)") |
| sys.exit(1) |
| |
| rm = RepoManifest() |
| db = DockerBuilder(rm) |