[Tarantool-patches] [PATCH v6] gitlab-ci: implement packing into MCS S3

Igor Munkin imun at tarantool.org
Thu Jan 23 18:24:45 MSK 2020


Sasha,

Thanks, I took a look on the new version of the changes since there
was an important discussion in the previous patch[1] and significant
changes are made within the current one. I left several comments below,
please consider them.

On 17.01.20, Alexander V. Tikhonov wrote:

> Gitlab-CI rules changed to be able to create packages on branches
> with ".*-full-ci$" pattern and additionaly deploy it to MCS S3 on
> master branches in 'live' repository. Tagged in GIT commit will
> be additionaly packed to 'release' repository.
> 
> Added ability to store packages at MCS S3 additionally to packages
> storing at PackageCloud. The main difference that the repository
> at MCS S3 has its native files structure as its OS distributions
> have. Also the new repository doesn't prune the old packages and
> stores all the saved packages for Tarantool and its modules for
> each commit at all the release branches. Tarantool users may enable
> the repository and fix certain version of Tarantool in dependencies
> of an application packages.
> 
> For storing the DEB and RPM packages to MCS S3 was created
> standalone script which creates/updates the packages repositories
> with OS distribution native files structure style.
> 
> Common parts of the script are:
> 
>  - create new meta files for the new binaries
>  - copy new binaries to MCS S3
>  - get previous meta files from MCS S3 and merge the new meta data
>    for the new binaries
>  - update the meta files at MCS S3
> 
> Different parts:
> 
>  - DEB script part based on 'reprepro' external tool, also it works
>    separately only on OS versions level - it means that meta data
>    it updates for all distributions together.
>  - RPM script part based on 'createrepo' external tool, also it works
>    separately for OS/Release level - it means that meta data it
>    updates for all releases separately.
> 

The commit message looks to be complex and unclear. I propose to reword
it as the following:
| The changes introduce new Gitlab-CI rules for creating packages on
| branches with "-full-ci" suffix and their subsequent deployment to the
| 'live' repository for master and release branches. Packages for tagged
| commits are also delivered to the corresponding 'release' repository.
|
| The PackageCloud storage is replaced with the new self-hosted one
| (based on S3 object storage) where all old packages have been synced.
| The new builds will be pushed only to S3 based repos. Benefits of the
| introduced approach are the following:
| * As far as all contents of self-hosted repos are fully controlled
| theirs layout is the same as the ones provided by the corresponding
| distro
| * Repo metadata rebuild is excess considering the known repo layout
| * Old packages are not pruned since they do not affect the repo
| metadata rebuilding time
|
| For these purposes the standalone script for pushing DEB and RPM
| packages to self-hosted repositories is introduced. The script
| implements the following flow:
| * creates new metafiles for the new packages
| * copies new packages to S3 storage
| * fetches relevant metafiles from the repo
| * merges the new metadata with the fetched one
| * pushes the updated metadata to S3 storage
|
| There are distro dependent parts in the script:
| * For RPM packages it updates metadata separately per each repo
| considering 'createrepo' util behaviour
| * For DEB packages it updates metadata simultaniously for all repos
| considering 'reprepro' util behaviour

> Closes #3380
> 
> @TarantoolBot
> Title: Update download instructions on the website
> 
> Need to update download instructions on the website, due to the new
> repository based on MCS S3.
> ---
> 
> Github: https://github.com/tarantool/tarantool/tree/avtikhon/gh-3380-push-packages-s3-full-ci
> Issue: https://github.com/tarantool/tarantool/issues/3380
> 
> v5: https://lists.tarantool.org/pipermail/tarantool-patches/2020-January/013636.html
> v4: https://lists.tarantool.org/pipermail/tarantool-patches/2020-January/013568.html
> v3: https://lists.tarantool.org/pipermail/tarantool-patches/2019-December/013060.html
> v2: https://lists.tarantool.org/pipermail/tarantool-patches/2019-November/012352.html
> v1: https://lists.tarantool.org/pipermail/tarantool-patches/2019-October/012021.html
> 
> Changes v6:
> - implemented 2 MCS S3 repositories 'live' and 'release'
> - added AWS and GPG keys into Gitlab-CI
> - corrected commit message
> - corrected return functionality code in script
> - moved all changes for sources tarballs at the standalone patch set
> 
> Changes v5:
> - code style
> - commits squashed
> - rebased to master
> 
> Changes v4:
> - minor corrections
> 
> Changes v3:
> - common code parts merged to standalone routines
> - corrected code style, minor updates
> - script is ready for release
> 
> Changes v2:
> - made changes in script from draft to pre-release stages
> 
>  .gitlab-ci.yml       | 152 +++++++++++--
>  .gitlab.mk           |  16 +-
>  tools/update_repo.sh | 520 +++++++++++++++++++++++++++++++++++++++++++
>  3 files changed, 668 insertions(+), 20 deletions(-)
>  create mode 100755 tools/update_repo.sh
> 
> diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
> index 3af5a3c8a..c68594c1a 100644
> --- a/.gitlab-ci.yml
> +++ b/.gitlab-ci.yml
> @@ -10,6 +10,10 @@ variables:
>    only:
>      refs:
>        - master
> +
> +.fullci_only_template: &fullci_only_definition
> +  only:
> +    refs:
>        - /^.*-full-ci$/
>  
>  .docker_test_template: &docker_test_definition
> @@ -24,13 +28,29 @@ variables:
>    tags:
>      - docker_test
>  
> +.pack_template: &pack_definition
> +  <<: *fullci_only_definition
> +  stage: test
> +  tags:
> +    - deploy
> +  script:
> +    - ${GITLAB_MAKE} package
> +
> +.pack_test_template: &pack_test_definition
> +  <<: *fullci_only_definition
> +  stage: test
> +  tags:
> +    - deploy_test
> +  script:
> +    - ${GITLAB_MAKE} package
> +
>  .deploy_template: &deploy_definition
>    <<: *release_only_definition
>    stage: test
>    tags:
>      - deploy
>    script:
> -    - ${GITLAB_MAKE} package
> +    - ${GITLAB_MAKE} deploy
>  
>  .deploy_test_template: &deploy_test_definition
>    <<: *release_only_definition
> @@ -38,7 +58,7 @@ variables:
>    tags:
>      - deploy_test
>    script:
> -    - ${GITLAB_MAKE} package
> +    - ${GITLAB_MAKE} deploy
>  
>  .vbox_template: &vbox_definition
>    stage: test
> @@ -141,96 +161,194 @@ freebsd_12_release:
>  # Packs
>  
>  centos_6:
> -  <<: *deploy_definition
> +  <<: *pack_definition
>    variables:
>      OS: 'el'
>      DIST: '6'
>  
>  centos_7:
> -  <<: *deploy_test_definition
> +  <<: *pack_test_definition
>    variables:
>      OS: 'el'
>      DIST: '7'
>  
>  centos_8:
> -  <<: *deploy_test_definition
> +  <<: *pack_test_definition
>    variables:
>      OS: 'el'
>      DIST: '8'
>  
>  fedora_28:
> -  <<: *deploy_test_definition
> +  <<: *pack_test_definition
>    variables:
>      OS: 'fedora'
>      DIST: '28'
>  
>  fedora_29:
> -  <<: *deploy_test_definition
> +  <<: *pack_test_definition
>    variables:
>      OS: 'fedora'
>      DIST: '29'
>  
>  fedora_30:
> -  <<: *deploy_test_definition
> +  <<: *pack_test_definition
>    variables:
>      OS: 'fedora'
>      DIST: '30'
>  
>  fedora_31:
> -  <<: *deploy_test_definition
> +  <<: *pack_test_definition
>    variables:
>      OS: 'fedora'
>      DIST: '31'
>  
>  ubuntu_14_04:
> -  <<: *deploy_definition
> +  <<: *pack_definition
>    variables:
>      OS: 'ubuntu'
>      DIST: 'trusty'
>  
>  ubuntu_16_04:
> -  <<: *deploy_definition
> +  <<: *pack_definition
>    variables:
>      OS: 'ubuntu'
>      DIST: 'xenial'
>  
>  ubuntu_18_04:
> -  <<: *deploy_definition
> +  <<: *pack_definition
>    variables:
>      OS: 'ubuntu'
>      DIST: 'bionic'
>  
>  ubuntu_18_10:
> -  <<: *deploy_definition
> +  <<: *pack_definition
>    variables:
>      OS: 'ubuntu'
>      DIST: 'cosmic'
>  
>  ubuntu_19_04:
> -  <<: *deploy_definition
> +  <<: *pack_definition
>    variables:
>      OS: 'ubuntu'
>      DIST: 'disco'
>  
>  ubuntu_19_10:
> -  <<: *deploy_definition
> +  <<: *pack_definition
>    variables:
>      OS: 'ubuntu'
>      DIST: 'eoan'
>  
>  debian_8:
> -  <<: *deploy_definition
> +  <<: *pack_definition
>    variables:
>      OS: 'debian'
>      DIST: 'jessie'
>  
>  debian_9:
> -  <<: *deploy_definition
> +  <<: *pack_definition
>    variables:
>      OS: 'debian'
>      DIST: 'stretch'
>  
>  debian_10:
> +  <<: *pack_definition
> +  variables:
> +    OS: 'debian'
> +    DIST: 'buster'
> +
> +# Deploy
> +
> +centos_6_deploy:
> +  <<: *deploy_definition
> +  variables:
> +    OS: 'el'
> +    DIST: '6'
> +
> +centos_7_deploy:
> +  <<: *deploy_test_definition
> +  variables:
> +    OS: 'el'
> +    DIST: '7'
> +
> +centos_8_deploy:
> +  <<: *deploy_test_definition
> +  variables:
> +    OS: 'el'
> +    DIST: '8'
> +
> +fedora_28_deploy:
> +  <<: *deploy_test_definition
> +  variables:
> +    OS: 'fedora'
> +    DIST: '28'
> +
> +fedora_29_deploy:
> +  <<: *deploy_test_definition
> +  variables:
> +    OS: 'fedora'
> +    DIST: '29'
> +
> +fedora_30_deploy:
> +  <<: *deploy_test_definition
> +  variables:
> +    OS: 'fedora'
> +    DIST: '30'
> +
> +fedora_31_deploy:
> +  <<: *deploy_test_definition
> +  variables:
> +    OS: 'fedora'
> +    DIST: '31'
> +
> +ubuntu_14_04_deploy:
> +  <<: *deploy_definition
> +  variables:
> +    OS: 'ubuntu'
> +    DIST: 'trusty'
> +
> +ubuntu_16_04_deploy:
> +  <<: *deploy_definition
> +  variables:
> +    OS: 'ubuntu'
> +    DIST: 'xenial'
> +
> +ubuntu_18_04_deploy:
> +  <<: *deploy_definition
> +  variables:
> +    OS: 'ubuntu'
> +    DIST: 'bionic'
> +
> +ubuntu_18_10_deploy:
> +  <<: *deploy_definition
> +  variables:
> +    OS: 'ubuntu'
> +    DIST: 'cosmic'
> +
> +ubuntu_19_04_deploy:
> +  <<: *deploy_definition
> +  variables:
> +    OS: 'ubuntu'
> +    DIST: 'disco'
> +
> +ubuntu_19_10_deploy:
> +  <<: *deploy_definition
> +  variables:
> +    OS: 'ubuntu'
> +    DIST: 'eoan'
> +
> +debian_8_deploy:
> +  <<: *deploy_definition
> +  variables:
> +    OS: 'debian'
> +    DIST: 'jessie'
> +
> +debian_9_deploy:
> +  <<: *deploy_definition
> +  variables:
> +    OS: 'debian'
> +    DIST: 'stretch'
> +
> +debian_10_deploy:
>    <<: *deploy_definition
>    variables:
>      OS: 'debian'
> diff --git a/.gitlab.mk b/.gitlab.mk
> index 48a92e518..49277e176 100644
> --- a/.gitlab.mk
> +++ b/.gitlab.mk
> @@ -98,14 +98,24 @@ vms_test_%:
>  vms_shutdown:
>  	VBoxManage controlvm ${VMS_NAME} poweroff
>  
> -# ########################
> -# Build RPM / Deb packages
> -# ########################
> +# ###########################
> +# Sources tarballs & packages
> +# ###########################
>  
>  package: git_submodule_update
>  	git clone https://github.com/packpack/packpack.git packpack
>  	PACKPACK_EXTRA_DOCKER_RUN_PARAMS='--network=host' ./packpack/packpack
>  
> +deploy: package
> +	for key in ${GPG_SECRET_KEY} ${GPG_PUBLIC_KEY} ; do \
> +		echo $${key} | base64 -d | gpg --batch --import || true ; done
> +	./tools/update_repo.sh -o=${OS} -d=${DIST} build
> +	for tag in $$(git tag) ; do \
> +			git describe --long $${tag} ; \
> +		done | grep "^$$(git describe --long)$$" >/dev/null && \
> +		./tools/update_repo.sh -o=${OS} -d=${DIST} \
> +			-b='s3://tarantool_repo/release' build
> +
>  # ############
>  # Static build
>  # ############
> diff --git a/tools/update_repo.sh b/tools/update_repo.sh
> new file mode 100755
> index 000000000..28b490fb7
> --- /dev/null
> +++ b/tools/update_repo.sh
> @@ -0,0 +1,520 @@
> +#!/bin/bash
> +set -e
> +
> +rm_file='rm -f'
> +rm_dir='rm -rf'
> +mk_dir='mkdir -p'
> +ws_prefix=/tmp/tarantool_repo_s3
> +
> +alloss='ubuntu debian el fedora'
> +product=tarantool
> +# the path with binaries either repository
> +repo=.
> +
> +# AWS defines
> +aws="aws --endpoint-url ${AWS_S3_ENDPOINT_URL} s3"

Please add the default value for env variable AWS_S3_ENDPOINT_URL.

> +bucket='s3://tarantool_repo/live'
> +aws_cp_public="$aws cp --acl public-read"
> +aws_sync_public="$aws sync --acl public-read"
> +
> +function get_os_dists {
> +    os=$1
> +    alldists=
> +
> +    if [ "$os" == "ubuntu" ]; then
> +        alldists='trusty xenial bionic cosmic disco eoan'
> +    elif [ "$os" == "debian" ]; then
> +        alldists='jessie stretch buster'
> +    elif [ "$os" == "el" ]; then
> +        alldists='6 7 8'
> +    elif [ "$os" == "fedora" ]; then
> +        alldists='27 28 29 30 31'
> +    fi
> +
> +    echo "$alldists"
> +}
> +
> +function prepare_ws {
> +    # temporary lock the publication to the repository
> +    ws_suffix=$1
> +    ws=${ws_prefix}_${ws_suffix}
> +    ws_lockfile=${ws}.lock
> +    if [ -f $ws_lockfile ]; then
> +        old_proc=$(cat $ws_lockfile)
> +    fi
> +    lockfile -l 60 $ws_lockfile
> +    chmod u+w $ws_lockfile && echo $$ >$ws_lockfile && chmod u-w $ws_lockfile
> +    if [ "$old_proc" != ""  -a "$old_proc" != "0" ]; then
> +        kill -9 $old_proc >/dev/null || true
> +    fi
> +
> +    # create temporary workspace with repository copy
> +    $rm_dir $ws
> +    $mk_dir $ws
> +}
> +
> +function usage {
> +    cat <<EOF
> +Usage for store package binaries from the given path:
> +    $0 -o=<OS name> -d=<OS distribuition> [-b=<S3 bucket>] [-p=<product>] <path to package binaries>
> +
> +Usage for mirroring Debian|Ubuntu OS repositories:
> +    $0 -o=<OS name> [-b=<S3 bucket>] [-p=<product>] <path to 'pool' subdirectory with packages repository>
> +
> +Arguments:
> +    <path>
> +         Path points to the directory with deb/prm packages to be used.
> +         Script can be used in one of 2 modes:
> +          - path with binaries packages for a single distribution
> +          - path with 'pool' subdirectory with APT repository (only: debian|ubuntu), like:
> +                /var/spool/apt-mirror/mirror/packagecloud.io/$product/$os
> +
> +Options:

As discussed offline, please consider introducing the --force flag
implementing the following:
* If flag is omitted the script fails whether checksum of local and
  remote packages with the same name and version differs
* If flag is specified the script updates the remote package with the
  local one despite the checksum difference

Please mention this behaviour in usage.

> +    -b|--bucket
> +        MCS S3 bucket already existing which will be used for storing the packages, by default bucket is:
> +            $bucket
> +    -o|--os
> +        OS to be checked, one of the list:
> +            $alloss
> +    -d|--distribution
> +        Distribution appropriate to the given OS:
> +EOF
> +    for os in $alloss ; do
> +        echo "            $os: <"$(get_os_dists $os)">"
> +    done
> +    cat <<EOF
> +    -p|--product
> +         Product name to be packed with, default name is 'tarantool'
> +    -h|--help
> +         Usage help message
> +EOF
> +}
> +
> +for i in "$@"
> +do
> +case $i in
> +    -b=*|--bucket=*)
> +    bucket="${i#*=}"
> +    shift # past argument=value
> +    ;;
> +    -o=*|--os=*)
> +    os="${i#*=}"
> +    if ! echo $alloss | grep -F -q -w $os ; then
> +        echo "ERROR: OS '$os' is not supported"
> +        usage
> +        exit 1
> +    fi
> +    shift # past argument=value
> +    ;;
> +    -d=*|--distribution=*)
> +    option_dist="${i#*=}"
> +    shift # past argument=value
> +    ;;
> +    -p=*|--product=*)
> +    product="${i#*=}"
> +    shift # past argument=value
> +    ;;
> +    -h|--help)
> +    usage
> +    exit 0
> +    ;;
> +    *)
> +    repo="${i#*=}"
> +    pushd $repo >/dev/null ; repo=$PWD ; popd >/dev/null
> +    shift # past argument=value
> +    ;;
> +esac
> +done
> +
> +# check that all needed options were set and correct
> +if ! $aws ls $bucket >/dev/null ; then
> +    echo "ERROR: bucket '$bucket' is not found"
> +    usage
> +    exit 1
> +fi
> +if [ "$os" == "" ]; then
> +    echo "ERROR: need to set -o|--os OS name option, check usage"
> +    usage
> +    exit 1
> +fi
> +alldists=$(get_os_dists $os)
> +if [ -n "$option_dist" ] && ! echo $alldists | grep -F -q -w $option_dist ; then
> +    echo "ERROR: set distribution at options '$option_dist' not found at supported list '$alldists'"
> +    usage
> +    exit 1
> +fi
> +
> +# set the subpath with binaries based on literal character of the product name
> +proddir=$(echo $product | head -c 1)
> +
> +# set bucket path of the given OS in options
> +bucket_path="$bucket/$os"
> +
> +function update_deb_packfile {
> +    packfile=$1
> +    packtype=$2
> +    update_dist=$3
> +
> +    locpackfile=$(echo $packfile | sed "s#^$ws/##g")
> +    # register DEB/DSC pack file to Packages/Sources file
> +    reprepro -Vb . include$packtype $update_dist $packfile
> +    # reprepro copied DEB/DSC file to component which is not needed
> +    $rm_dir $debdir/$component
> +    # to have all sources avoid reprepro set DEB/DSC file to its own registry
> +    $rm_dir db
> +}
> +
> +function update_deb_metadata {
> +    packpath=$1
> +    packtype=$2
> +
> +    if [ ! -f $packpath.saved ] ; then
> +        # get the latest Sources file from S3
> +        $aws ls "$bucket_path/$packpath" >/dev/null 2>&1 && \
> +            $aws cp "$bucket_path/$packpath" $packpath.saved || \
> +            touch $packpath.saved
> +    fi
> +
> +    if [ "$packtype" == "dsc" ]; then
> +        # WORKAROUND: unknown why, but reprepro doesn`t save the Sources file
> +        gunzip -c $packpath.gz >$packpath
> +        # check if the DSC file already exists in Sources from S3
> +        hash=$(grep '^Checksums-Sha256:' -A3 $packpath | \
> +            tail -n 1 | awk '{print $1}')
> +        if grep " $hash .*$" $packpath.saved ; then
> +            echo "WARNING: DSC file already registered in S3!"
> +            return
> +        fi
> +        updated_dsc=1
> +    elif [ "$packtype" == "deb" ]; then
> +        # check if the DEB file already exists in Packages from S3
> +        if grep "^$(grep '^SHA256: ' $packages)$" $packages.saved ; then
> +            echo "WARNING: DEB file already registered in S3!"
> +            return
> +        fi
> +        updated_deb=1
> +    fi
> +    # store the new DEB entry
> +    cat $packpath >>$packpath.saved
> +}
> +
> +# The 'pack_deb' function especialy created for DEB packages. It works
> +# with DEB packing OS like Ubuntu, Debian. It is based on globaly known
> +# tool 'reprepro' from:
> +#     https://wiki.debian.org/DebianRepository/SetupWithReprepro
> +# This tool works with complete number of distributions of the given OS.
> +# Result of the routine is the debian package for APT repository with
> +# file structure equal to the Debian/Ubuntu:
> +#     http://ftp.am.debian.org/debian/pool/main/t/tarantool/
> +#     http://ftp.am.debian.org/ubuntu/pool/main/t/
> +function pack_deb {
> +    # we need to push packages into 'main' repository only
> +    component=main
> +
> +    # debian has special directory 'pool' for packages
> +    debdir=pool
> +
> +    # get packages from pointed location
> +    if [ ! -d $repo/$debdir ] && \
> +        ( [ "$option_dist" == "" ] || \
> +            ! ls $repo/*.deb $repo/*.dsc $repo/*.tar.*z >/dev/null ) ; then
> +        echo "ERROR: Current '$repo' path doesn't have any of the following:"
> +        echo " - $0 run option '-d' and DEB packages in path"
> +        echo " - 'pool' subdirectory with APT repositories"
> +        usage
> +        exit 1
> +    fi
> +
> +    # prepare the workspace
> +    prepare_ws ${os}
> +
> +    # script works in one of 2 modes:
> +    # - path with binaries packages for a single distribution
> +    # - path with 'pool' directory with APT repository
> +    if [ "$option_dist" != "" ] && \
> +            ls $repo/*.deb $repo/*.dsc $repo/*.tar.*z >/dev/null 2>&1 ; then
> +        # copy single distribution with binaries packages
> +        repopath=$ws/pool/${option_dist}/$component/$proddir/$product
> +        $mk_dir ${repopath}
> +        cp $repo/*.deb $repo/*.dsc $repo/*.tar.*z $repopath/.
> +    elif [ -d $repo/$debdir ]; then

As discussed offline the 'pool' flow is excess and required only for
initial repositories sync. I guess it can be removed with all related
entries within this script.

> +        # copy 'pool' directory with APT repository
> +        cp -rf $repo/$debdir $ws/.
> +    else
> +        echo "ERROR: neither distribution option '-d' with files $repo/*.deb $repo/*.dsc $repo/*.tar.*z set nor '$repo/$debdir' path found"
> +        usage
> +        $rm_file $wslock
> +        exit 1
> +    fi
> +
> +    pushd $ws
> +
> +    # create the configuration file for 'reprepro' tool
> +    confpath=$ws/conf
> +    $rm_dir $confpath
> +    $mk_dir $confpath
> +
> +    for loop_dist in $alldists ; do
> +        cat <<EOF >>$confpath/distributions
> +Origin: Tarantool
> +Label: tarantool.org
> +Suite: stable
> +Codename: $loop_dist
> +Architectures: amd64 source
> +Components: $component
> +Description: Tarantool DBMS and Tarantool modules
> +SignWith: 91B625E5
> +DebIndices: Packages Release . .gz .bz2
> +UDebIndices: Packages . .gz .bz2
> +DscIndices: Sources Release .gz .bz2
> +
> +EOF
> +    done
> +
> +    # create standalone repository with separate components
> +    for loop_dist in $alldists ; do
> +        echo ================ DISTRIBUTION: $loop_dist ====================
> +        updated_files=0
> +
> +        # 1(binaries). use reprepro tool to generate Packages file
> +        for deb in $ws/$debdir/$loop_dist/$component/*/*/*.deb ; do
> +            [ -f $deb ] || continue
> +            updated_deb=0
> +            # regenerate DEB pack
> +            update_deb_packfile $deb deb $loop_dist
> +            echo "Regenerated DEB file: $locpackfile"
> +            for packages in dists/$loop_dist/$component/binary-*/Packages ; do
> +                # copy Packages file to avoid of removing by the new DEB version
> +                # update metadata 'Packages' files
> +                update_deb_metadata $packages deb
> +                [ "$updated_deb" == "1" ] || continue
> +                updated_files=1
> +            done
> +            # save the registered DEB file to S3
> +            if [ "$updated_deb" == 1 ]; then
> +                $aws_cp_public $deb $bucket_path/$locpackfile
> +            fi
> +        done
> +
> +        # 1(sources). use reprepro tool to generate Sources file
> +        for dsc in $ws/$debdir/$loop_dist/$component/*/*/*.dsc ; do
> +            [ -f $dsc ] || continue
> +            updated_dsc=0
> +            # regenerate DSC pack
> +            update_deb_packfile $dsc dsc $loop_dist
> +            echo "Regenerated DSC file: $locpackfile"
> +            # copy Sources file to avoid of removing by the new DSC version
> +            # update metadata 'Sources' file
> +            update_deb_metadata dists/$loop_dist/$component/source/Sources dsc
> +            [ "$updated_dsc" == "1" ] || continue
> +            updated_files=1
> +            # save the registered DSC file to S3
> +            $aws_cp_public $dsc $bucket_path/$locpackfile
> +            tarxz=$(echo $locpackfile | sed 's#\.dsc$#.debian.tar.xz#g')
> +            $aws_cp_public $ws/$tarxz "$bucket_path/$tarxz"
> +            orig=$(echo $locpackfile | sed 's#-1\.dsc$#.orig.tar.xz#g')
> +            $aws_cp_public $ws/$orig "$bucket_path/$orig"
> +        done
> +
> +        # check if any DEB/DSC files were newly registered
> +        [ "$updated_files" == "0" ] && \
> +            continue || echo "Updating dists"
> +
> +        # finalize the Packages file
> +        for packages in dists/$loop_dist/$component/binary-*/Packages ; do
> +            mv $packages.saved $packages
> +        done
> +
> +        # 2(binaries). update Packages file archives
> +        for packpath in dists/$loop_dist/$component/binary-* ; do
> +            pushd $packpath
> +            sed "s#Filename: $debdir/$component/#Filename: $debdir/$loop_dist/$component/#g" -i Packages
> +            bzip2 -c Packages >Packages.bz2
> +            gzip -c Packages >Packages.gz
> +            popd
> +        done
> +
> +        # 2(sources). update Sources file archives
> +        pushd dists/$loop_dist/$component/source
> +        sed "s#Directory: $debdir/$component/#Directory: $debdir/$loop_dist/$component/#g" -i Sources
> +        bzip2 -c Sources >Sources.bz2
> +        gzip -c Sources >Sources.gz
> +        popd
> +
> +        # 3. update checksums entries of the Packages* files in *Release files
> +        # NOTE: it is stable structure of the *Release files when the checksum
> +        #       entries in it in the following way:
> +        # MD5Sum:
> +        #  <checksum> <size> <file orig>
> +        #  <checksum> <size> <file debian>
> +        # SHA1:
> +        #  <checksum> <size> <file orig>
> +        #  <checksum> <size> <file debian>
> +        # SHA256:
> +        #  <checksum> <size> <file orig>
> +        #  <checksum> <size> <file debian>
> +        #       The script bellow puts 'md5' value at the 1st found file entry,
> +        #       'sha1' - at the 2nd and 'sha256' at the 3rd
> +        pushd dists/$loop_dist
> +        for file in $(grep " $component/" Release | awk '{print $3}' | sort -u) ; do
> +            sz=$(stat -c "%s" $file)
> +            md5=$(md5sum $file | awk '{print $1}')
> +            sha1=$(sha1sum $file | awk '{print $1}')
> +            sha256=$(sha256sum $file | awk '{print $1}')
> +            awk 'BEGIN{c = 0} ; {
> +                if ($3 == p) {
> +                    c = c + 1
> +                    if (c == 1) {print " " md  " " s " " p}
> +                    if (c == 2) {print " " sh1 " " s " " p}
> +                    if (c == 3) {print " " sh2 " " s " " p}
> +                } else {print $0}
> +            }' p="$file" s="$sz" md="$md5" sh1="$sha1" sh2="$sha256" \
> +                    Release >Release.new
> +            mv Release.new Release
> +        done
> +        # resign the selfsigned InRelease file
> +        $rm_file InRelease
> +        gpg --clearsign -o InRelease Release
> +        # resign the Release file
> +        $rm_file Release.gpg
> +        gpg -abs -o Release.gpg Release
> +        popd
> +
> +        # 4. sync the latest distribution path changes to S3
> +        $aws_sync_public dists/$loop_dist "$bucket_path/dists/$loop_dist"
> +    done
> +
> +    # unlock the publishing
> +    $rm_file $ws_lockfile
> +
> +    popd
> +}
> +
> +# The 'pack_rpm' function especialy created for RPM packages. It works
> +# with RPM packing OS like Centos, Fedora. It is based on globaly known
> +# tool 'createrepo' from:
> +#     https://linux.die.net/man/8/createrepo
> +# This tool works with single distribution of the given OS.
> +# Result of the routine is the rpm package for YUM repository with
> +# file structure equal to the Centos/Fedora:
> +#     http://mirror.centos.org/centos/7/os/x86_64/Packages/
> +#     http://mirrors.kernel.org/fedora/releases/30/Everything/x86_64/os/Packages/t/
> +function pack_rpm {
> +    if ! ls $repo/*.rpm >/dev/null ; then
> +        echo "ERROR: Current '$repo' path doesn't have RPM packages in path"
> +        usage
> +        exit 1
> +    fi
> +
> +    # prepare the workspace
> +    prepare_ws ${os}_${option_dist}
> +
> +    # copy the needed package binaries to the workspace
> +    cp $repo/*.rpm $ws/.
> +
> +    pushd $ws
> +
> +    # set the paths
> +    if [ "$os" == "el" ]; then
> +        repopath=$option_dist/os/x86_64
> +        rpmpath=Packages
> +    elif [ "$os" == "fedora" ]; then
> +        repopath=releases/$option_dist/Everything/x86_64/os
> +        rpmpath=Packages/$proddir
> +    fi
> +    packpath=$repopath/$rpmpath
> +
> +    # prepare local repository with packages
> +    $mk_dir $packpath
> +    mv *.rpm $packpath/.
> +    cd $repopath
> +
> +    # copy the current metadata files from S3
> +    mkdir repodata.base
> +    for file in $($aws ls $bucket_path/$repopath/repodata/ | awk '{print $NF}') ; do
> +        $aws ls $bucket_path/$repopath/repodata/$file || continue
> +        $aws cp $bucket_path/$repopath/repodata/$file repodata.base/$file
> +    done
> +
> +    # create the new repository metadata files
> +    createrepo --no-database --update --workers=2 \
> +        --compress-type=gz --simple-md-filenames .
> +    mv repodata repodata.adding
> +
> +    # merge metadata files
> +    mkdir repodata
> +    head -n 2 repodata.adding/repomd.xml >repodata/repomd.xml
> +    for file in filelists.xml other.xml primary.xml ; do
> +        # 1. take the 1st line only - to skip the line with
> +        #    number of packages which is not needed
> +        zcat repodata.adding/$file.gz | head -n 1 >repodata/$file
> +        # 2. take 2nd line with metadata tag and update
> +        #    the packages number in it
> +        packsold=0
> +        if [ -f repodata.base/$file.gz ] ; then
> +            packsold=$(zcat repodata.base/$file.gz | head -n 2 | \
> +                tail -n 1 | sed 's#.*packages="\(.*\)".*#\1#g')
> +        fi
> +        packsnew=$(zcat repodata.adding/$file.gz | head -n 2 | \
> +            tail -n 1 | sed 's#.*packages="\(.*\)".*#\1#g')
> +        packs=$(($packsold+$packsnew))
> +        zcat repodata.adding/$file.gz | head -n 2 | tail -n 1 | \
> +            sed "s#packages=\".*\"#packages=\"$packs\"#g" >>repodata/$file
> +        # 3. take only 'package' tags from new file
> +        zcat repodata.adding/$file.gz | tail -n +3 | head -n -1 \
> +            >>repodata/$file
> +        # 4. take only 'package' tags from old file if exists
> +        if [ -f repodata.base/$file.gz ] ; then
> +            zcat repodata.base/$file.gz | tail -n +3 | head -n -1 \
> +                >>repodata/$file
> +        fi
> +        # 5. take the last closing line with metadata tag
> +        zcat repodata.adding/$file.gz | tail -n 1 >>repodata/$file
> +
> +        # get the new data
> +        chsnew=$(sha256sum repodata/$file | awk '{print $1}')
> +        sz=$(stat --printf="%s" repodata/$file)
> +        gzip repodata/$file
> +        chsgznew=$(sha256sum repodata/$file.gz | awk '{print $1}')
> +        szgz=$(stat --printf="%s" repodata/$file.gz)
> +        timestamp=$(date +%s -r repodata/$file.gz)
> +
> +        # add info to repomd.xml file
> +        name=$(echo $file | sed 's#\.xml$##g')
> +        cat <<EOF >>repodata/repomd.xml
> +<data type="$name">
> +  <checksum type="sha256">$chsgznew</checksum>
> +  <open-checksum type="sha256">$chsnew</open-checksum>
> +  <location href="repodata/$file.gz"/>
> +  <timestamp>$timestamp</timestamp>
> +  <size>$szgz</size>
> +  <open-size>$sz</open-size>
> +</data>"
> +EOF
> +    done
> +    tail -n 1 repodata.adding/repomd.xml >>repodata/repomd.xml
> +    gpg --detach-sign --armor repodata/repomd.xml
> +
> +    # copy the packages to S3
> +    for file in $rpmpath/*.rpm ; do
> +        $aws_cp_public $file "$bucket_path/$repopath/$file"
> +    done
> +
> +    # update the metadata at the S3
> +    $aws_sync_public repodata "$bucket_path/$repopath/repodata"
> +
> +    # unlock the publishing
> +    $rm_file $ws_lockfile
> +
> +    popd
> +}
> +
> +if [ "$os" == "ubuntu" -o "$os" == "debian" ]; then
> +    pack_deb
> +elif [ "$os" == "el" -o "$os" == "fedora" ]; then
> +    pack_rpm
> +else
> +    echo "USAGE: given OS '$os' is not supported, use any single from the list: $alloss"
> +    usage
> +    exit 1
> +fi
> -- 
> 2.17.1
> 

[1]: https://lists.tarantool.org/pipermail/tarantool-patches/2020-January/013676.html

-- 
Best regards,
IM


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