Files
kamal/lib/kamal/secrets/dotenv/inline_command_substitution.rb
Donal McBreen 06f4caa866 Make the secrets commands inline aware
Rather than redirecting the global $stdout, which is not never clever in
a threaded program, we'll make the secrets commands aware they are
being inlined, so they return the value instead of printing it.

Additionally we no longer need to interrupt the parent process on error
as we've inlined the command - exit 1 is enough.
2024-09-10 10:39:44 +01:00

33 lines
1.0 KiB
Ruby

class Kamal::Secrets::Dotenv::InlineCommandSubstitution
class << self
def install!
::Dotenv::Parser.substitutions.map! { |sub| sub == ::Dotenv::Substitutions::Command ? self : sub }
end
def call(value, _env, overwrite: false)
# Process interpolated shell commands
value.gsub(Dotenv::Substitutions::Command.singleton_class::INTERPOLATED_SHELL_COMMAND) do |*|
# Eliminate opening and closing parentheses
command = $LAST_MATCH_INFO[:cmd][1..-2]
if $LAST_MATCH_INFO[:backslash]
# Command is escaped, don't replace it.
$LAST_MATCH_INFO[0][1..]
else
if command =~ /\A\s*kamal\s*secrets\s+/
# Inline the command
inline_secrets_command(command)
else
# Execute the command and return the value
`#{command}`.chomp
end
end
end
end
def inline_secrets_command(command)
Kamal::Cli::Main.start(command.shellsplit[1..] + [ "--inline" ]).chomp
end
end
end