Class: OpenNebula::Template

Inherits:
PoolElement show all
Defined in:
lib/opennebula/template.rb

Constant Summary collapse

TEMPLATE_METHODS = 
{
    :allocate    => "template.allocate",
    :instantiate => "template.instantiate",
    :info        => "template.info",
    :update      => "template.update",
    :delete      => "template.delete",
    :chown       => "template.chown",
    :chmod       => "template.chmod",
    :clone       => "template.clone",
    :rename      => "template.rename"
}

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from PoolElement

#id, #name, new_with_id, #to_str

Methods inherited from XMLElement

#[], #add_element, #attr, #delete_element, #each, #each_xpath, #element_xml, #has_elements?, #initialize_xml, #name, #retrieve_elements, #retrieve_xmlelements, #template_like_str, #template_str, #template_xml, #text, #to_hash, #to_xml, #xml_nil?

Constructor Details

#initialize(xml, client) ⇒ Template

Class constructor



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# File 'lib/opennebula/template.rb', line 57

def initialize(xml, client)
    super(xml,client)

    @client = client
end

Class Method Details

.build_xml(pe_id = nil) ⇒ Object

Creates a Template description with just its identifier this method should be used to create plain Template objects. id the id of the user

Example:

template = Template.new(Template.build_xml(3),rpc_client)



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# File 'lib/opennebula/template.rb', line 46

def Template.build_xml(pe_id=nil)
    if pe_id
        obj_xml = "<VMTEMPLATE><ID>#{pe_id}</ID></VMTEMPLATE>"
    else
        obj_xml = "<VMTEMPLATE></VMTEMPLATE>"
    end

    XMLElement.build_xml(obj_xml,'VMTEMPLATE')
end

Instance Method Details

#allocate(description) ⇒ nil, OpenNebula::Error

Allocates a new Template in OpenNebula

Parameters:

  • description (String) —

    The contents of the Template.

Returns:



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# File 'lib/opennebula/template.rb', line 94

def allocate(description)
    super(TEMPLATE_METHODS[:allocate], description)
end

#chmod(owner_u, owner_m, owner_a, group_u, group_m, group_a, other_u, other_m, other_a, recursive = false) ⇒ nil, OpenNebula::Error

Changes the Template permissions. Each [Integer] argument must be 1 to allow, 0 deny, -1 do not change

any image defined in DISK.

Parameters:

  • recursive (true, false) (defaults to: false) —

    optional, chmods the template plus

Returns:



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# File 'lib/opennebula/template.rb', line 198

def chmod(owner_u, owner_m, owner_a, group_u, group_m, group_a, other_u,
        other_m, other_a, recursive=false)
    return call(TEMPLATE_METHODS[:chmod], @pe_id, owner_u, owner_m, owner_a, group_u,
        group_m, group_a, other_u, other_m, other_a, recursive)
end

#chmod_octet(octet, recursive = false) ⇒ nil, OpenNebula::Error

Changes the Template permissions.

any image defined in DISK.

Parameters:

  • octet (String) —

    Permissions octed , e.g. 640

  • recursive (true, false) (defaults to: false) —

    optional, chmods the template plus

Returns:



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# File 'lib/opennebula/template.rb', line 175

def chmod_octet(octet, recursive=false)
    owner_u = octet[0..0].to_i & 4 != 0 ? 1 : 0
    owner_m = octet[0..0].to_i & 2 != 0 ? 1 : 0
    owner_a = octet[0..0].to_i & 1 != 0 ? 1 : 0
    group_u = octet[1..1].to_i & 4 != 0 ? 1 : 0
    group_m = octet[1..1].to_i & 2 != 0 ? 1 : 0
    group_a = octet[1..1].to_i & 1 != 0 ? 1 : 0
    other_u = octet[2..2].to_i & 4 != 0 ? 1 : 0
    other_m = octet[2..2].to_i & 2 != 0 ? 1 : 0
    other_a = octet[2..2].to_i & 1 != 0 ? 1 : 0

    chmod(owner_u, owner_m, owner_a, group_u, group_m, group_a, other_u,
        other_m, other_a, recursive)
end

#chown(uid, gid) ⇒ Object

Changes the owner/group

uid

Integer the new owner id. Set to -1 to leave the current one

gid

Integer the new group id. Set to -1 to leave the current one

return

nil in case of success or an Error object



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# File 'lib/opennebula/template.rb', line 163

def chown(uid, gid)
    super(TEMPLATE_METHODS[:chown], uid, gid)
end

#clone(name, recursive = false) ⇒ Integer, OpenNebula::Error

Clones this Template into a new one

any image defined in DISK. The new IMAGE_ID is set into each DISK.

Parameters:

  • name (String) —

    for the new Template.

  • recursive (true, false) (defaults to: false) —

    optional, clones the template plus

Returns:

  • (Integer, OpenNebula::Error) —

    The new Template ID in case of success, Error otherwise



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# File 'lib/opennebula/template.rb', line 212

def clone(name, recursive=false)
    return Error.new('ID not defined') if !@pe_id

    rc = @client.call(TEMPLATE_METHODS[:clone], @pe_id, name, recursive)

    return rc
end

#delete(recursive = false) ⇒ nil, OpenNebula::Error

Deletes the Template

any image defined in DISK.

Parameters:

  • recursive (true, false) (defaults to: false) —

    optional, deletes the template plus

Returns:



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# File 'lib/opennebula/template.rb', line 105

def delete(recursive=false)
    return call(TEMPLATE_METHODS[:delete], @pe_id, recursive)
end

#gid ⇒ Object

Returns the group identifier

return

Integer the element’s group ID



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# File 'lib/opennebula/template.rb', line 236

def gid
    self['GID'].to_i
end

#info(extended = false) ⇒ Object Also known as: info!

Retrieves the information of the given Template. include extended information, such as the SIZE for each DISK

Parameters:

  • extended (true, false) (defaults to: false) —

    optional flag to process the template and



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# File 'lib/opennebula/template.rb', line 70

def info(extended=false)
    return Error.new('ID not defined') if !@pe_id

    rc = @client.call(TEMPLATE_METHODS[:info], @pe_id, extended)

    if !OpenNebula.is_error?(rc)
        initialize_xml(rc, 'VMTEMPLATE')
        rc   = nil

        @pe_id = self['ID'].to_i if self['ID']
        @name  = self['NAME'] if self['NAME']
    end

    return rc
end

#instantiate(name = "", hold = false, template = "", persistent = false) ⇒ Integer, OpenNebula::Error

Creates a VM instance from a Template

Parameters:

  • name (String) (defaults to: "") —

    Name for the VM instance. If it is an empty string OpenNebula will set a default name

  • hold (true, false) (defaults to: false) —

    false to create the VM in pending state, true to create it on hold

  • template (String) (defaults to: "") —

    User provided Template to merge with the one being instantiated

  • persistent (true, false) (defaults to: false) —

    true to create a private persistent copy of the template plus any image defined in DISK, and instantiate that copy

Returns:



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# File 'lib/opennebula/template.rb', line 123

def instantiate(name="", hold=false, template="", persistent=false)
    return Error.new('ID not defined') if !@pe_id

    name ||= ""
    hold = false if hold.nil?
    template ||= ""
    persistent = false if persistent.nil?

    rc = @client.call(TEMPLATE_METHODS[:instantiate], @pe_id,
        name, hold, template, persistent)

    return rc
end

#owner_id ⇒ Object 



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# File 'lib/opennebula/template.rb', line 240

def owner_id
    self['UID'].to_i
end

#public? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/opennebula/template.rb', line 244

def public?
    if self['PERMISSIONS/GROUP_U'] == "1" || self['PERMISSIONS/OTHER_U'] == "1"
        true
    else
        false
    end
end

#publish ⇒ Object

Publishes the Template, to be used by other users



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# File 'lib/opennebula/template.rb', line 150

def publish
    set_publish(true)
end

#rename(name) ⇒ nil, OpenNebula::Error

Renames this Template

Parameters:

  • name (String) —

    New name for the Template.

Returns:



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# File 'lib/opennebula/template.rb', line 226

def rename(name)
    return call(TEMPLATE_METHODS[:rename], @pe_id, name)
end

#unpublish ⇒ Object

Unplubishes the Image



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# File 'lib/opennebula/template.rb', line 155

def unpublish
    set_publish(false)
end

#update(new_template, append = false) ⇒ nil, OpenNebula::Error

Replaces the template contents

Parameters:

  • new_template (String) —

    New template contents

  • append (true, false) (defaults to: false) —

    True to append new attributes instead of replace the whole template

Returns:



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# File 'lib/opennebula/template.rb', line 145

def update(new_template, append=false)
    super(TEMPLATE_METHODS[:update], new_template, append ? 1 : 0)
end