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#
# Author:: Matt Wrock (<mwrock@chef.io>)
# Copyright:: Copyright (c) Chef Software Inc.
# License:: Apache License, Version 2.0
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
class Chef
class Pwsh < Chef::PowerShell
# Run a command under pwsh (powershell core) via FFI
# This implementation requires the managed dll, native wrapper and a
# published, self contained dotnet core directory tree to exist in the
# bindir directory.
#
# @param script [String] script to run
# @return [Object] output
def initialize(script)
@dll = Pwsh.dll
super
end
protected
def exec(script)
# Note that we need to override the location of the shared dotnet core library
# location. With most .net core applications, you can simply publish them as a
# "self-contained" application allowing consumers of the application to run them
# and use its own stand alone version of the .net core runtime. However because
# this is simply a dll and not an exe, it will look for the runtime in the shared
# .net core installation folder. By setting DOTNET_MULTILEVEL_LOOKUP to 0 we can
# override that folder's location with DOTNET_ROOT. To avoid the possibility of
# interfering with other .net core processes that might rely on the common shared
# location, we revert these variables after the script completes.
original_dml = ENV["DOTNET_MULTILEVEL_LOOKUP"]
original_dotnet_root = ENV["DOTNET_ROOT"]
original_dotnet_root_x86 = ENV["DOTNET_ROOT(x86)"]
ENV["DOTNET_MULTILEVEL_LOOKUP"] = "0"
ENV["DOTNET_ROOT"] = RbConfig::CONFIG["bindir"]
ENV["DOTNET_ROOT(x86)"] = RbConfig::CONFIG["bindir"]
super
ensure
ENV["DOTNET_MULTILEVEL_LOOKUP"] = original_dml
ENV["DOTNET_ROOT"] = original_dotnet_root
ENV["DOTNET_ROOT(x86)"] = original_dotnet_root_x86
end
def self.dll
@dll ||= Dir.glob("#{RbConfig::CONFIG["bindir"]}/**/Chef.PowerShell.Wrapper.Core.dll").last
end
end
end
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