Class: Indocker::Rsync

Inherits:
Object
  • Object
show all
Defined in:
lib/indocker/rsync.rb

Class Method Summary collapse

Class Method Details

.local_sync(from, to, create_path: nil, raise_on_error: false, exclude: nil) ⇒ Object 



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# File 'lib/indocker/rsync.rb', line 4

def self.local_sync(from, to, create_path: nil, raise_on_error: false, exclude: nil)
  @session ||= Indocker::SshSession.new(
    host: 'localhost',
    user: nil,
    port: nil,
    logger: Indocker.logger
  )

  sync(@session, from, to, create_path: create_path, raise_on_error: raise_on_error, exclude: exclude)
end

.sync(session, from, to, create_path: nil, raise_on_error: false, exclude: nil) ⇒ Object 



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# File 'lib/indocker/rsync.rb', line 15

def self.sync(session, from, to, create_path: nil, raise_on_error: false, exclude: nil)
  if create_path
    session.exec!("mkdir -p #{create_path}")
  end

  if session.local?
    return if File.expand_path(to) == File.expand_path(from)

    Indocker::Shell.command("rm -rf #{to}", Indocker.logger, raise_on_error: raise_on_error)

    if Indocker::Shell.command_exist?("rsync")
      sync_local_rsync(from, to, raise_on_error: raise_on_error, exclude: exclude)
    else
      Indocker.logger.debug("WARNING: exclude option skipped due to fallback to CP command")
      sync_local_cp(from, to, raise_on_error: raise_on_error)
    end
  else
    # BatchMode/ConnectTimeout: an unreachable server must fail in seconds with
    # a clear rsync error instead of hanging silently (or prompting for a password)
    # until the deployment-wide remote operation timeout kills the whole deploy.
    # ServerAlive*: a path that accepts the connection and then stops delivering
    # packets (seen when a cloud NAT address half-works) would otherwise hang
    # just as long — keepalives tear such a session down in ~30s.
    ssh_command = [
      "ssh -p #{session.port}",
      "-o BatchMode=yes",
      "-o ConnectTimeout=#{Indocker.ssh_connect_timeout}",
      "-o ServerAliveInterval=10",
      "-o ServerAliveCountMax=3",
    ]

    # Tunnel through the jump host the server is defined with, so that a server
    # reachable only over its internal address syncs like any other one.
    ssh_command << "-J #{session.jump_host}" if session.jump_host

    ssh_command = ssh_command.join(' ')
    command = "rsync --delete-after -a -e '#{ssh_command}' #{from} #{session.user}@#{session.host}:#{to}"
    Indocker.logger.debug("sync #{from} #{session.user}@#{session.host}:#{to}")
    Indocker::Shell.command(command, Indocker.logger, raise_on_error: raise_on_error)
  end
end

.sync_local_cp(from, to, raise_on_error:) ⇒ Object 



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# File 'lib/indocker/rsync.rb', line 58

def self.sync_local_cp(from, to, raise_on_error:)
  Indocker::Shell.command("cp -r #{from} #{to}", Indocker.logger, raise_on_error: raise_on_error)
end

.sync_local_rsync(from, to, raise_on_error:, exclude: nil) ⇒ Object 



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# File 'lib/indocker/rsync.rb', line 62

def self.sync_local_rsync(from, to, raise_on_error:, exclude: nil)
  options = []
  options << " --exclude=#{exclude}" if exclude
  # Add a trailing slash to directory to have behavior similar to CP command
  if File.directory?(from) && !from.end_with?("/")
    from = "#{from}/"
  end
  Indocker::Shell.command("rsync -a #{options.join(' ')} #{from} #{to}", Indocker.logger, raise_on_error: raise_on_error)
end