add support of multiple values in host label

[magicaner]

Allow usage of (c1 OR c2) AND (c3 or c4) condition to select() query

The existing solution does not allow OR conditions in the scope of single label value in the select query.
The following example is only possible:

task(...).select('stage=prod & role=web, stage=qa & role=web')

In other words, only the following conditions could be defined in the query:

(condition1 and condition2) or (condition3 and condition4)

Example:

stage=prod & role=web, stage=qa & role=web, stage=qa & role=db, stage=prod & role=db

But in most cases, we need the following query:

(condition1 or condition2) and (condition3 or condition4)

Example:

stage=prod|qa & role=web|db

The PR is adding that support.

Example of usage:

Define hosts

host('prod.example.org') 
    ->set('hostname', 'example.cloud.google.com')
    ->setLabel( 'stage' => 'prod' 'role' => ['build','web','redis'] ])
;
host('prod-db.example.org')
    ->set('hostname', 'example.cloud.google.com')
    ->setLabel( 'stage' => 'prod' 'role' => ['db'] ])
; 
host('qa.example.org')
    ->set('hostname', 'example.cloud.google.com')
    ->setLabel( 'stage' => 'qa' 'role' => ['build','web','redis','db'] ]); 

host('dev.example.org')
    ->set('hostname', 'example.cloud.google.com')
    ->setLabel( 'stage' => 'dev' 'role' => ['build','web','redis','db'] ]); 

Define tasks

desc('Reload Http');
task('reload:http', function () {
    run('/usr/sbin/service nginx reload &> /dev/null');
})->select('stage=prod|qa|dev & role=web');

• Bug fix #…?

• New feature?

• BC breaks?

• Tests added?

• Docs added?

  Please, regenerate docs by running next command:
  $ php bin/docgen
  

[antonmedv]

Nice!

[antonmedv]

Actually, what about implementing a better support with and or operators and ( ) brackets?

[antonmedv]

Please fix tests and add docs.

[antonmedv]

test / e2e is failing for other reasos.

[magicaner]

Actually, what about implementing a better support with and or operators and ( ) brackets?

I don't feel like that is necessary. The feature in PR covers all my requirements at the moment.
Adding brakets will increase the complexity of expression. My goal was to improve its readability. Visual readability.
Can you provide the example of what you mean?

[magicaner]

@antonmedv I have updated docs and tests.