Files
kamal/lib/mrsk/cli/app.rb
David Heinemeier Hansson 3a9c8455ec Style / presentatino
2023-01-22 11:27:39 +01:00

124 lines
4.3 KiB
Ruby

require "mrsk/cli/base"
class Mrsk::Cli::App < Mrsk::Cli::Base
desc "boot", "Boot app on servers (or start them if they've already been booted)"
def boot
MRSK.config.roles.each do |role|
on(role.hosts) do |host|
begin
execute *MRSK.app.run(role: role.name)
rescue SSHKit::Command::Failed => e
if e.message =~ /already in use/
error "Container with same version already deployed on #{host}, starting that instead"
execute *MRSK.app.start, host: host
else
raise
end
end
end
end
end
desc "start", "Start existing app on servers (use --version=<git-hash> to designate specific version)"
option :version, desc: "Defaults to the most recent git-hash in local repository"
def start
if (version = options[:version]).present?
on(MRSK.hosts) { execute *MRSK.app.start(version: version) }
else
on(MRSK.hosts) { execute *MRSK.app.start, raise_on_non_zero_exit: false }
end
end
desc "stop", "Stop app on servers"
def stop
on(MRSK.hosts) { execute *MRSK.app.stop, raise_on_non_zero_exit: false }
end
desc "details", "Display details about app containers"
def details
on(MRSK.hosts) { |host| puts_by_host host, capture_with_info(*MRSK.app.info) }
end
desc "exec [CMD]", "Execute a custom command on servers"
option :run, type: :boolean, default: false, desc: "Start a new container to run the command rather than reusing existing"
def exec(cmd)
runner = options[:run] ? :run_exec : :exec
on(MRSK.hosts) { |host| puts_by_host host, capture_with_info(*MRSK.app.send(runner, cmd)) }
end
desc "console", "Start Rails Console on primary host (or specific host set by --hosts)"
def console
run_locally do
info "Launching Rails console on #{MRSK.primary_host}"
exec MRSK.app.console(host: MRSK.primary_host)
end
end
desc "bash", "Start a bash session on primary host (or specific host set by --hosts)"
def bash
run_locally do
info "Launching bash session on #{MRSK.primary_host}"
exec MRSK.app.bash(host: MRSK.primary_host)
end
end
desc "runner [EXPRESSION]", "Execute Rails runner with given expression"
def runner(expression)
on(MRSK.hosts) { |host| puts_by_host host, capture_with_info(*MRSK.app.exec("bin/rails", "runner", "'#{expression}'")) }
end
desc "containers", "List all the app containers currently on servers"
def containers
on(MRSK.hosts) { |host| puts_by_host host, capture_with_info(*MRSK.app.list_containers) }
end
desc "current", "Return the current running container ID"
def current
on(MRSK.hosts) { |host| puts_by_host host, capture_with_info(*MRSK.app.current_container_id) }
end
desc "logs", "Show lines from app on servers"
option :since, aliases: "-s", desc: "Show logs since timestamp (e.g. 2013-01-02T13:23:37Z) or relative (e.g. 42m for 42 minutes)"
option :lines, type: :numeric, aliases: "-n", desc: "Number of log lines to pull from each server"
option :grep, aliases: "-g", desc: "Show lines with grep match only (use this to fetch specific requests by id)"
option :follow, aliases: "-f", desc: "Follow logs on primary server (or specific host set by --hosts)"
def logs
# FIXME: Catch when app containers aren't running
grep = options[:grep]
if options[:follow]
run_locally do
info "Following logs on #{MRSK.primary_host}..."
info MRSK.app.follow_logs(host: MRSK.primary_host, grep: grep)
exec MRSK.app.follow_logs(host: MRSK.primary_host, grep: grep)
end
else
since = options[:since]
lines = options[:lines]
on(MRSK.hosts) do |host|
begin
puts_by_host host, capture_with_info(*MRSK.app.logs(since: since, lines: lines, grep: grep))
rescue SSHKit::Command::Failed
puts_by_host host, "Nothing found"
end
end
end
end
desc "remove", "Remove app containers and images from servers"
option :only, default: "", desc: "Use 'containers' or 'images'"
def remove
case options[:only]
when "containers"
on(MRSK.hosts) { execute *MRSK.app.remove_containers }
when "images"
on(MRSK.hosts) { execute *MRSK.app.remove_images }
else
on(MRSK.hosts) { execute *MRSK.app.remove_containers }
on(MRSK.hosts) { execute *MRSK.app.remove_images }
end
end
end