Verifying if package is installed before downloading it in PUPPET - puppet

Question

That is my manifest code which download, install and remove installer on a host.
class googlechrome_2 {
package { 'GoogleChrome':
ensure => installed,
source => 'C:\Soft\ChromeSetup.msi',
install_options => ['/qn'],
require => File['GoogleChromeMsi'],
}
file { 'GoogleChromeMsi':
ensure => file,
path => 'C:\Soft\ChromeSetup.msi',
source => 'puppet:///files/production/ChromeSetup.msi',
}
exec { 'msi_removing':
command => 'C:\Windows\System32\cmd.exe /c del C:\Soft\ChromeSetup.msi',
}
}
In this case my windows host always download chromesetup.msi regardless if google chrome already installed or not. How can I realize kind of "if condition" here to avoid downloading msi package each time in case if this package already installed?

Answer 1

In this case my windows host always download chromesetup.msi regardless if google chrome already installed or not.
Yes. Having the File resource in the node's catalog specifies that the file should be managed. Therefore, if it is not initially in the target state then Puppet will attempt to fix that.
By managing the file present but also including an Exec that removes the file, you ensure that the target node cannot achieve a stable state.
How can I realize kind of "if condition" here to avoid downloading msi package each time in case if this package already installed?
Simplest option: don't remove the installer.
Variation: Put the installer in an accessible network folder, so that you not only don't remove it, but you also don't install it.
If you really want a conditional: then it should be based on a custom fact that reports on the installation status of the package in question. You then use a Puppet if statement to control the contents of the node's catalog appropriately. Something along these lines, for example:
package { 'GoogleChrome':
ensure => 'installed',
source => 'C:\Soft\ChromeSetup.msi',
install_options => ['/qn'],
# relationhip with File['GoogleChromeMsi'] now declared on the other end
}
if $facts['chrome_is_installed'] {
file { 'GoogleChromeMsi':
ensure => 'absent',
path => 'C:\Soft\ChromeSetup.msi',
}
} else {
file { 'GoogleChromeMsi':
ensure => 'file',
path => 'C:\Soft\ChromeSetup.msi',
source => 'puppet:///files/production/ChromeSetup.msi',
before => Package['GoogleChrome'],
}
exec { 'msi_removing':
command => 'C:\Windows\System32\cmd.exe /c del C:\Soft\ChromeSetup.msi',
require => Package['GoogleChrome'],
}
}

Answer 2

I've solved this by using network shared folder in the package source:
class googlechrome_smb {
package { 'Google Chrome':
ensure => installed,
source => '\\\xxx.xxx.xxx.xxx\winfiles\ChromeSetup.msi',
install_options => ['/qn'],
}
}