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From: Thomas Lamprecht <t.lamprecht@proxmox.com>
To: Proxmox VE development discussion <pve-devel@lists.proxmox.com>,
	Dominik Csapak <d.csapak@proxmox.com>
Subject: Re: [pve-devel] [PATCH access-control 1/1] add realmsync plugin for jobs and CRUD api for domainsync-jobs
Date: Mon, 7 Nov 2022 18:05:10 +0100	[thread overview]
Message-ID: <4a367506-1629-69a7-b1c1-d0ea9fdccb40@proxmox.com> (raw)
In-Reply-To: <20220404085416.1761268-2-d.csapak@proxmox.com>

mid to high level review, but it may be that some things are slightly
out of date since sending this ~7 months ago (sorry for the delay...)

Am 04/04/2022 um 10:54 schrieb Dominik Csapak:
> to be able to define automated jobs that sync ldap/ad
> 
> The jobs plugin contains special handling when no node is given, since
> we only want it to run on a single node when that triggers. For that,
> we save a statefile in /etc/pve/priv/jobs/ which contains the
> node/time/upid of the node that runs the job. The first node that
> is able to lock the realm (via cfs_lock_domain) "wins" and may
> sync from the ldap.
> 
> in case a specific node was selected, this is omitted and the Jobs
> handling will not let it run on other nodes anyway
> 
> the API part is our usual sectionconfig CRUD api, but specialized
> for the specific type of job.
> 
> Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
> ---
>  src/PVE/API2/AccessControl.pm |   6 +
>  src/PVE/API2/Domainsync.pm    | 278 ++++++++++++++++++++++++++++++++++
>  src/PVE/API2/Makefile         |   1 +
>  src/PVE/Jobs/Makefile         |   6 +
>  src/PVE/Jobs/RealmSync.pm     | 192 +++++++++++++++++++++++
>  src/PVE/Makefile              |   1 +
>  6 files changed, 484 insertions(+)
>  create mode 100644 src/PVE/API2/Domainsync.pm
>  create mode 100644 src/PVE/Jobs/Makefile
>  create mode 100644 src/PVE/Jobs/RealmSync.pm
> 
> diff --git a/src/PVE/API2/AccessControl.pm b/src/PVE/API2/AccessControl.pm
> index 5d78c6f..6f32bf2 100644
> --- a/src/PVE/API2/AccessControl.pm
> +++ b/src/PVE/API2/AccessControl.pm
> @@ -15,6 +15,7 @@ use PVE::RESTHandler;
>  use PVE::AccessControl;
>  use PVE::JSONSchema qw(get_standard_option);
>  use PVE::API2::Domains;
> +use PVE::API2::Domainsync;
>  use PVE::API2::User;
>  use PVE::API2::Group;
>  use PVE::API2::Role;
> @@ -57,6 +58,11 @@ __PACKAGE__->register_method ({
>      path => 'domains',
>  });
>  
> +__PACKAGE__->register_method ({
> +    subclass => "PVE::API2::Domainsync",
> +    path => 'domainsyncjobs',
> +});

I'd place this in a `jobs` sub-directory, iow. above would then be

/access/jobs/domain-sync

> +
>  __PACKAGE__->register_method ({
>      subclass => "PVE::API2::OpenId",
>      path => 'openid',
> diff --git a/src/PVE/API2/Domainsync.pm b/src/PVE/API2/Domainsync.pm
> new file mode 100644
> index 0000000..22333bf
> --- /dev/null
> +++ b/src/PVE/API2/Domainsync.pm
> @@ -0,0 +1,278 @@
> +package PVE::API2::Domainsync;


As "Domainsync" is rather generall and not so telling outside of the access
control context, I'd change module name and file location to:

PVE::API2::AccessControl::Job::DomainSync;

while maybe a bit unwieldy we only need to refer this about one time on
registering it in the manager.

If you want you could place the PVE::API2::AccessControl::Job; (which will be
just a short index endpoint and subdir registering) and this in the same file.


> +
> +use strict;
> +use warnings;
> +
> +use JSON;
> +
> +use PVE::Exception qw(raise_param_exc);
> +use PVE::Tools qw(extract_param);
> +use PVE::Cluster qw (cfs_read_file cfs_write_file cfs_lock_file);
> +use PVE::AccessControl;
> +use PVE::JSONSchema qw(get_standard_option);
> +use PVE::Jobs::RealmSync;

please group by 
- perl module
- proxmox but not in repo
- in repo
and sort each group, thx!

> +
> +use PVE::SafeSyslog;
> +use PVE::RESTHandler;
> +use PVE::Auth::Plugin;
> +
> +use base qw(PVE::RESTHandler);
> +
> +my $get_cluster_last_run = sub {
> +    my ($jobid) = @_;
> +
> +    my $raw = PVE::Tools::file_get_contents("/etc/pve/priv/jobs/realmsync-$jobid.json");
> +    my $state = decode_json($raw);

maybe wrap this in eval and add some error context on $@, as decode_json
errors are pretty ugly and hard to relate too as there's not file name
info or the like available.

> +    if (my $upid = $state->{upid}) {
> +	if (my $decoded = PVE::Tools::upid_decode($upid)) {
> +	    return $decoded->{starttime};
> +	}
> +    } else {
> +	return $state->{time};

code golfy and such no hard feelings: could be written as:

my $upid = $state->{upid} or return $state->{time};

> +    }
> +
> +    return undef;
> +};
> +
> +__PACKAGE__->register_method ({
> +    name => 'syncjob_index',
> +    path => '',
> +    method => 'GET',
> +    description => "List configured domain-sync-jobs.",
> +    permissions => {
> +	check => ['perm', '/', ['Sys.Audit']],
> +    },
> +    parameters => {
> +	additionalProperties => 0,
> +	properties => {},
> +    },
> +    returns => {
> +	type => 'array',
> +	items => {
> +	    type => "object",
> +	    properties => {
> +		id => {
> +		    description => "The ID of the entry.",
> +		    type => 'string'
> +		},
> +		disable => {
> +		    description => "Flag to disable the plugin.",
> +		    type => 'boolean',
> +		},
> +		# TODO ADD missing properties
> +	    },
> +	},
> +	links => [ { rel => 'child', href => "{id}" } ],
> +    },
> +    code => sub {
> +	my ($param) = @_;
> +
> +	my $rpcenv = PVE::RPCEnvironment::get();
> +	my $user = $rpcenv->get_user();
> +
> +	my $jobs_data = cfs_read_file('jobs.cfg');
> +	my $order = $jobs_data->{order};
> +	my $jobs = $jobs_data->{ids};
> +
> +	my $res = [];
> +	foreach my $jobid (sort { $order->{$a} <=> $order->{$b} } keys %$jobs) {

nit: we prefer shorter `for` for new code, it's the same as foreach since a while
but, well, shorter.

> +	    my $job = $jobs->{$jobid};
> +	    next if $job->{type} ne 'realmsync';
> +
> +	    if (my $schedule = $job->{schedule}) {
> +		$job->{'last-run'} = eval { $get_cluster_last_run->($jobid) };
> +		my $last_run = $job->{'last-run'} // time(); # current time as fallback
> +		my $calspec = Proxmox::RS::CalendarEvent->new($schedule);

mixed variable naming (snake case before and below, but none(?) here),

> +		my $next_run = $calspec->compute_next_event($last_run);
> +		$job->{'next-run'} = $next_run if defined($next_run);
> +	    }
> +
> +	    push @$res, $job;
> +	}
> +
> +	return $res;
> +    }});
> +
> +__PACKAGE__->register_method({
> +    name => 'read_job',
> +    path => '{id}',
> +    method => 'GET',
> +    description => "Read domain-sync job definition.",
> +    permissions => {
> +	check => ['perm', '/', ['Sys.Audit']],
> +    },
> +    parameters => {
> +	additionalProperties => 0,
> +	properties => {
> +	    id => {
> +		type => 'string',
> +		format => 'pve-configid',
> +	    },
> +	},
> +    },
> +    returns => {
> +	type => 'object',
> +    },
> +    code => sub {
> +	my ($param) = @_;
> +
> +	my $jobs = cfs_read_file('jobs.cfg');
> +	my $job = $jobs->{ids}->{$param->{id}};

code style nit: please avoid using hash access inside for hash keys.

> +	return $job if $job && $job->{type} eq 'realmsync';

is this outdated due to being from april? or do we really share the
ID namespace between all plugin types?

> +
> +	raise_param_exc({ id => "No such job '$param->{id}'" });



> +
> +    }});
> +
> +__PACKAGE__->register_method({
> +    name => 'create_job',
> +    path => '{id}',
> +    method => 'POST',
> +    protected => 1,
> +    description => "Create new domain-sync job.",
> +    permissions => {
> +	description => "'Realm.AllocateUser' on '/access/realm/<realm>' and "
> +	    ." 'User.Modify' permissions to '/access/groups/'.",

results in double whitespace at "and  'User.Modify'"

> +	check => [ 'and',
> +	    ['perm', '/access/realm/{realm}', ['Realm.AllocateUser']],
> +	    ['perm', '/access/groups', ['User.Modify']],

hmm, is this the same as for a manual sync? I guess it's OK then, just
seems a bit lax.

> +	],
> +    },
> +    parameters => PVE::Jobs::RealmSync->createSchema(),
> +    returns => { type => 'null' },
> +    code => sub {
> +	my ($param) = @_;
> +
> +	my $id = extract_param($param, 'id');
> +
> +	cfs_lock_file('jobs.cfg', undef, sub {
> +	    my $data = cfs_read_file('jobs.cfg');
> +
> +	    die "Job '$id' already exists\n"
> +		if $data->{ids}->{$id};
> +
> +	    my $plugin = PVE::Jobs::Plugin->lookup('realmsync');
> +	    my $opts = $plugin->check_config($id, $param, 1, 1);
> +
> +	    $data->{ids}->{$id} = $opts;
> +
> +	    PVE::Jobs::create_job($id, 'realmsync');
> +
> +	    cfs_write_file('jobs.cfg', $data);
> +	});
> +	die "$@" if ($@);
> +
> +	return undef;
> +    }});
> +
> +__PACKAGE__->register_method({
> +    name => 'update_job',
> +    path => '{id}',
> +    method => 'PUT',
> +    protected => 1,
> +    description => "Update domain-sync job definition.",
> +    permissions => {
> +	description => "'Realm.AllocateUser' on '/access/realm/<realm>' and "
> +	    ." 'User.Modify' permissions to '/access/groups/'.",
> +	check => [ 'and',
> +	    ['perm', '/access/realm/{realm}', ['Realm.AllocateUser']],
> +	    ['perm', '/access/groups', ['User.Modify']],
> +	],
> +    },
> +    parameters => PVE::Jobs::RealmSync->updateSchema(),
> +    returns => { type => 'null' },
> +    code => sub {
> +	my ($param) = @_;
> +
> +	my $id = extract_param($param, 'id');
> +	my $delete = extract_param($param, 'delete');
> +	if ($delete) {
> +	    $delete = [PVE::Tools::split_list($delete)];
> +	}
> +
> +	my $update_job = sub {
> +	    my $jobs = cfs_read_file('jobs.cfg');
> +
> +	    die "no options specified\n" if !scalar(keys %$param);
> +
> +	    my $plugin = PVE::Jobs::Plugin->lookup('realmsync');
> +	    my $opts = $plugin->check_config($id, $param, 0, 1);
> +
> +	    my $job = $jobs->{ids}->{$id};
> +	    die "no such realmsync job\n" if !$job || $job->{type} ne 'realmsync';
> +
> +	    my $options = $plugin->options();
> +	    foreach my $k (@$delete) {
> +		my $d = $options->{$k} || die "no such option '$k'\n";
> +		die "unable to delete required option '$k'\n" if !$d->{optional};
> +		die "unable to delete fixed option '$k'\n" if $d->{fixed};
> +		die "cannot set and delete property '$k' at the same time!\n"
> +			if defined($opts->{$k});

don't we have that repeated a few times (didn't check actively, but seems to ring
some bells to me)? isn't this something some schema thingy w/could enforce?
(also @wolfgang for the latter)

> +		delete $job->{$k};
> +	    }
> +
> +	    my $schedule_updated = 0;
> +	    if ($param->{schedule} ne $job->{schedule}) {
> +		$schedule_updated = 1;
> +	    }

erm, why not?:

my $schedule_updated = $param->{schedule} ne $job->{schedule};

> +
> +	    foreach my $k (keys %$param) {

probably just copy "error", but please: s/foreach/for/, or even:

$job->{$_} = $param->{$_} for keys $param->%*;

> +		$job->{$k} = $param->{$k};
> +	    }
> +
> +	    if ($schedule_updated) {
> +		PVE::Jobs::updated_job_schedule($id, 'realmsync');
> +	    }
> +
> +	    cfs_write_file('jobs.cfg', $jobs);
> +	    return;
> +	};
> +	cfs_lock_file('jobs.cfg', undef, $update_job);

could use a direct sub {} instead of named $code_ref like the first
cfs_lock_file usage here does already.

> +	die "$@" if ($@);
> +    }});
> +
> +
> +__PACKAGE__->register_method({
> +    name => 'delete_job',
> +    path => '{id}',
> +    method => 'DELETE',
> +    description => "Delete domain-sync job definition.",
> +    permissions => {
> +	check => ['perm', '/', ['Sys.Modify']],
> +    },
> +    protected => 1,
> +    parameters => {
> +	additionalProperties => 0,
> +	properties => {
> +	    id => {
> +		type => 'string',
> +		format => 'pve-configid',
> +	    },
> +	},
> +    },
> +    returns => { type => 'null' },
> +    code => sub {
> +	my ($param) = @_;
> +
> +	my $id = $param->{id};
> +
> +	my $delete_job = sub {
> +	    my $jobs = cfs_read_file('jobs.cfg');
> +
> +	    if (!defined($jobs->{ids}->{$id})) {

why not check the job type here (but on get/update)?

> +		raise_param_exc({ id => "No such job '$id'" });
> +	    }
> +	    delete $jobs->{ids}->{$id};
> +
> +	    PVE::Jobs::remove_job($id, 'realmsync');
> +
> +	    cfs_write_file('jobs.cfg', $jobs);
> +	    unlink "/etc/pve/priv/jobs/realmsync-$id.json";
> +	};
> +
> +	cfs_lock_file('jobs.cfg', undef, $delete_job);

could use a direct sub {} instead of named $code_ref like the first
cfs_lock_file usage here does already.

> +	die "$@" if $@;
> +
> +	return undef;
> +    }});
> +1;
> diff --git a/src/PVE/API2/Makefile b/src/PVE/API2/Makefile
> index 2817f48..9aeb047 100644
> --- a/src/PVE/API2/Makefile
> +++ b/src/PVE/API2/Makefile
> @@ -2,6 +2,7 @@
>  API2_SOURCES= 		 	\
>  	AccessControl.pm 	\
>  	Domains.pm	 	\
> +	Domainsync.pm	 	\
>  	ACL.pm		 	\
>  	Role.pm		 	\
>  	Group.pm	 	\
> diff --git a/src/PVE/Jobs/Makefile b/src/PVE/Jobs/Makefile
> new file mode 100644
> index 0000000..9eed1b2
> --- /dev/null
> +++ b/src/PVE/Jobs/Makefile
> @@ -0,0 +1,6 @@
> +SOURCES=RealmSync.pm
> +
> +.PHONY: install
> +install: ${SOURCES}
> +	install -d -m 0755 ${DESTDIR}${PERLDIR}/PVE/Jobs
> +	for i in ${SOURCES}; do install -D -m 0644 $$i ${DESTDIR}${PERLDIR}/PVE/Jobs/$$i; done
> diff --git a/src/PVE/Jobs/RealmSync.pm b/src/PVE/Jobs/RealmSync.pm
> new file mode 100644
> index 0000000..f19f4a8
> --- /dev/null
> +++ b/src/PVE/Jobs/RealmSync.pm
> @@ -0,0 +1,192 @@
> +package PVE::Jobs::RealmSync;

Hmm, why not DomainSync, or why is the other module called Domainsynced, no biggie but
slightly odd

> +
> +use strict;
> +use warnings;

missing empty line between strict/warning and other use statements

> +use JSON;
> +
> +use PVE::API2::Domains;
> +use PVE::JSONSchema qw(get_standard_option);
> +use PVE::Cluster;
> +use PVE::CalendarEvent;
> +use PVE::Tools;

pls sort

> +
> +use base qw(PVE::Jobs::Plugin);

isn't this in pve-manager? would add a cyclic dependency and so to our (well
most of the time my ;P) bootstrap PITA.

> +
> +sub type {
> +    return 'realmsync';
> +}
> +
> +my $props = get_standard_option('realm-sync-options', {
> +    realm => get_standard_option('realm'),
> +});
> +
> +sub properties {
> +    return $props;
> +}
> +
> +sub options {
> +    my $options = {
> +	enabled => { optional => 1 },
> +	schedule => {},
> +	comment => { optional => 1 },
> +	node => { optional => 1 },
> +	scope => {},
> +    };
> +    foreach my $opt (keys %$props) {

s/foreach/for/

> +	next if defined($options->{$opt});
> +	if ($props->{$opt}->{optional}) {
> +	    $options->{$opt} = { optional => 1 };
> +	} else {
> +	    $options->{$opt} = {};
> +	}
> +    }
> +    $options->{realm}->{fixed} = 1;
> +
> +    return $options;
> +}
> +
> +sub decode_value {
> +    my ($class, $type, $key, $value) = @_;
> +    return $value;
> +}
> +
> +sub encode_value {
> +    my ($class, $type, $key, $value) = @_;
> +    return $value;
> +}
> +
> +sub createSchema {
> +    my ($class, $skip_type) = @_;
> +    my $schema = $class->SUPER::createSchema($skip_type);
> +
> +    my $opts = $class->options();
> +    for my $opt (keys $schema->{properties}->%*) {
> +	next if defined($opts->{$opt}) || $opt eq 'id';
> +	delete $schema->{properties}->{$opt};
> +    }
> +
> +    # remove legacy props
> +    delete $schema->{properties}->{full};
> +    delete $schema->{properties}->{purge};
> +
> +    return $schema;
> +}
> +
> +sub updateSchema {
> +    my ($class, $skip_type) = @_;
> +    my $schema = $class->SUPER::updateSchema($skip_type);
> +
> +    my $opts = $class->options();
> +    for my $opt (keys $schema->{properties}->%*) {
> +	next if defined($opts->{$opt});
> +	next if $opt eq 'id' || $opt eq 'delete';
> +	delete $schema->{properties}->{$opt};
> +    }
> +
> +    # remove legacy props
> +    delete $schema->{properties}->{full};
> +    delete $schema->{properties}->{purge};
> +
> +    return $schema;
> +}
> +
> +sub run {
> +    my ($class, $conf, $id, $schedule) = @_;
> +
> +    my $node = $conf->{node};
> +    foreach my $opt (keys %$conf) {
> +	delete $conf->{$opt} if !defined($props->{$opt});
> +    }
> +
> +    my $realm = $conf->{realm};
> +    my $statedir = "/etc/pve/priv/jobs";
> +    my $statefile = "$statedir/realmsync-$id.json";
> +
> +    if (!defined($node)) {
> +	# cluster synced
> +	my $curtime = time();

use $now if you want short, IMO a bit better than somewhat randomly cut-off
& directly concatenated words.

> +	my $nodename = PVE::INotify::nodename();
> +	PVE::Cluster::cfs_update();

doesn't the job infra does this for us?

> +	# check statefile in pmxcfs if we should start
> +	my $shouldrun = PVE::Cluster::cfs_lock_domain($realm, undef, sub {
> +	    mkdir $statedir;
> +	    my $raw = eval { PVE::Tools::file_get_contents($statefile) } // '';
> +	    my $members = PVE::Cluster::get_members();
> +
> +	    my $state = ($raw =~ m/^(\{.*\})$/) ? decode_json($1) : {};
> +	    my $lastnode = $state->{node} // $nodename;
> +	    my $lastupid = $state->{upid};
> +	    my $lasttime = $state->{time};
> +
> +	    my $node_online = 0;
> +	    if ($lastnode ne $nodename) {
> +		if (defined(my $member = $members->{$lastnode})) {
> +		    $node_online = $member->{online};
> +		}
> +	    } else {
> +		$node_online = 1;
> +	    }
> +
> +	    if (defined($lastupid)) {
> +		# first check if the next run is scheduled
> +		if (my $parsed = PVE::Tools::upid_decode($lastupid, 1)) {
> +		    my $calspec = PVE::CalendarEvent::parse_calendar_event($schedule);
> +		    my $next_sync = PVE::CalendarEvent::compute_next_event($calspec, $parsed->{starttime});
> +		    return 0 if !defined($next_sync) || $curtime < $next_sync; # not yet its (next) turn
> +		}
> +		# check if still running and node is online
> +		my $tasks = PVE::Cluster::get_tasklist();
> +		for my $task (@$tasks) {
> +		    next if $task->{upid} ne $lastupid;
> +		    last if defined($task->{endtime}); # it's already finished
> +		    last if !$node_online; # it's not finished but the node is offline
> +		    return 0; # not finished and online
> +		}
> +	    } elsif (defined($lasttime) && ($lasttime+60) > $curtime && $node_online) {
> +		# another node started in the last 60 seconds and is online
> +		return 0;
> +	    }
> +> +	    # any of the following coniditions should be true here:

s/coniditions/conditions/

> +	    # * it was started on another node but that node is offline now
> +	    # * it was started but either too long ago, or with an error
> +	    # * the started task finished
> +
> +	    PVE::Tools::file_set_contents($statefile, encode_json({
> +		node => $nodename,
> +		time => $curtime,
> +	    }));
> +	    return 1;
> +	});
> +	die $@ if $@;
> +
> +	if ($shouldrun) {
> +	    my $err = undef;

drop that and..

> +	    my $upid = eval { PVE::API2::Domains->sync($conf) };
> +	    $err = $@ if $@;

just save the error with:

my $err = $@;

> +	    PVE::Cluster::cfs_lock_domain($realm, undef, sub {
> +		if ($err && !$upid) {
> +		    PVE::Tools::file_set_contents($statefile, encode_json({
> +			node => $nodename,
> +			time => $curtime,
> +			error => $err,
> +		    }));
> +		    die "$err\n";
> +		}
> +
> +		PVE::Tools::file_set_contents($statefile, encode_json({
> +		    node => $nodename,
> +		    upid => $upid,
> +		}));
> +	    });
> +	    die $@ if $@;
> +	    return $upid;
> +	} else {
> +	    return "OK";
> +	}
> +    }
> +
> +    return PVE::API2::Domains->sync($conf);
> +}
> +
> +1;
> diff --git a/src/PVE/Makefile b/src/PVE/Makefile
> index c839d8f..dfc5314 100644
> --- a/src/PVE/Makefile
> +++ b/src/PVE/Makefile
> @@ -8,3 +8,4 @@ install:
>  	install -D -m 0644 TokenConfig.pm ${DESTDIR}${PERLDIR}/PVE/TokenConfig.pm
>  	make -C API2 install
>  	make -C CLI install
> +	make -C Jobs install





  reply	other threads:[~2022-11-07 17:05 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-04-04  8:54 [pve-devel] [PATCH access-control/manager] add realm sync jobs Dominik Csapak
2022-04-04  8:54 ` [pve-devel] [PATCH access-control 1/1] add realmsync plugin for jobs and CRUD api for domainsync-jobs Dominik Csapak
2022-11-07 17:05   ` Thomas Lamprecht [this message]
2022-11-08  8:20     ` Dominik Csapak
2022-11-08  9:24       ` Thomas Lamprecht
2022-11-08 10:36         ` Wolfgang Bumiller
2022-04-04  8:54 ` [pve-devel] [PATCH manager 1/4] Jobs: provide id and schedule to the job Dominik Csapak
2022-11-07 16:14   ` [pve-devel] applied: " Thomas Lamprecht
2022-04-04  8:54 ` [pve-devel] [PATCH manager 2/4] Jobs/Plugin: remove 'vzdump' from id description Dominik Csapak
2022-11-07 16:14   ` [pve-devel] applied: " Thomas Lamprecht
2022-04-04  8:54 ` [pve-devel] [PATCH manager 3/4] Jobs: add RealmSync Plugin and register it Dominik Csapak
2022-11-07 16:14   ` [pve-devel] applied: " Thomas Lamprecht
2022-11-07 16:15     ` Thomas Lamprecht
2022-04-04  8:54 ` [pve-devel] [PATCH manager 4/4] ui: add Realm Sync panel Dominik Csapak

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