Class: Kamal::Commands::Proxy

Inherits:
Base
  • Object
show all
Defined in:
lib/kamal/commands/proxy.rb

Constant Summary collapse

CONFIG_DIGEST_LABEL = 
"org.kamal.proxy-config-digest"

Constants inherited from Base

Base::DOCKER_HEALTH_STATUS_FORMAT, Base::NO_HEALTHCHECK

Instance Attribute Summary collapse

Attributes inherited from Base

#config

Instance Method Summary collapse

Methods inherited from Base

#container_id_for, #ensure_docker_installed, #make_directory, #make_directory_for, #read_file, #remove_directory, #remove_file, #run_over_ssh

Constructor Details

#initialize(config, host:) ⇒ Proxy

Returns a new instance of Proxy.



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# File 'lib/kamal/commands/proxy.rb', line 7

def initialize(config, host:)
  super(config)
  @proxy_run_config = config.proxy_run(host)
end

Instance Attribute Details

#proxy_run_config ⇒ Object (readonly)

Returns the value of attribute proxy_run_config.



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# File 'lib/kamal/commands/proxy.rb', line 3

def proxy_run_config
  @proxy_run_config
end

Instance Method Details

#boot_config ⇒ Object 



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# File 'lib/kamal/commands/proxy.rb', line 190

def boot_config
  [ :echo, "#{substitute(read_boot_options)} #{substitute(read_image)}:#{substitute(read_image_version)} #{substitute(read_run_command)}" ]
end

#cache_purge(service, path_prefix: nil) ⇒ Object 



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# File 'lib/kamal/commands/proxy.rb', line 76

def cache_purge(service, path_prefix: nil)
  docker :exec, container_name, "kamal-proxy", :cache, :purge, service, *optionize({ "path-prefix": path_prefix }.compact)
end

#cache_stats(count: false, json: false) ⇒ Object 



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# File 'lib/kamal/commands/proxy.rb', line 72

def cache_stats(count: false, json: false)
  docker :exec, container_name, "kamal-proxy", :cache, :stats, *optionize({ count: count || nil, json: json || nil }.compact)
end

#cleanup_traefik ⇒ Object 



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# File 'lib/kamal/commands/proxy.rb', line 163

def cleanup_traefik
  chain \
    docker(:container, :stop, "traefik"),
    combine(
      docker(:container, :prune, "--force", "--filter", "label=org.opencontainers.image.title=Traefik"),
      docker(:image, :prune, "--all", "--force", "--filter", "label=org.opencontainers.image.title=Traefik")
    )
end

#config_digest ⇒ Object 



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# File 'lib/kamal/commands/proxy.rb', line 52

def config_digest
  docker :inspect, container_name, "--format", "'{{ index .Config.Labels \"#{CONFIG_DIGEST_LABEL}\" }}'"
end

#container_id(only_running: false) ⇒ Object 



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# File 'lib/kamal/commands/proxy.rb', line 56

def container_id(only_running: false)
  container_id_for(container_name: container_name, only_running: only_running)
end

#disable_restart ⇒ Object

Cancel the restart policy before draining: drain makes the proxy exit on its own, which - unlike docker stop - an active restart policy would undo.



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# File 'lib/kamal/commands/proxy.rb', line 118

def disable_restart
  docker :update, "--restart=no", container_name
end

#domains(subcommand) ⇒ Object 



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# File 'lib/kamal/commands/proxy.rb', line 151

def domains(subcommand)
  docker :exec, container_name, "kamal-proxy", "domains", subcommand
end

#drain(timeout: nil) ⇒ Object 



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# File 'lib/kamal/commands/proxy.rb', line 122

def drain(timeout: nil)
  docker :exec, container_name, "kamal-proxy", :drain, *("--drain-timeout=#{timeout}s" if timeout)
end

#ensure_apps_config_directory ⇒ Object 



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# File 'lib/kamal/commands/proxy.rb', line 180

def ensure_apps_config_directory
  make_directory config.proxy_boot.apps_directory
end

#ensure_proxy_directory ⇒ Object 



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# File 'lib/kamal/commands/proxy.rb', line 172

def ensure_proxy_directory
  make_directory config.proxy_boot.host_directory
end

#follow_logs(host:, timestamps: true, grep: nil, grep_options: nil) ⇒ Object 



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# File 'lib/kamal/commands/proxy.rb', line 144

def follow_logs(host:, timestamps: true, grep: nil, grep_options: nil)
  run_over_ssh pipe(
    docker(:logs, container_name, ("--timestamps" if timestamps), "--tail", "10", "--follow", "2>&1"),
    (%(grep "#{grep}"#{" #{grep_options}" if grep_options}) if grep)
  ).join(" "), host: host
end

#holder_container_id ⇒ Object 



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# File 'lib/kamal/commands/proxy.rb', line 112

def holder_container_id
  container_id_for(container_name: proxy_run_config.holder_container_name, only_running: true)
end

#info ⇒ Object 



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# File 'lib/kamal/commands/proxy.rb', line 42

def info
  docker :ps, "--filter", "'name=^#{container_name}$'"
end

#list(name: container_name, json: false) ⇒ Object 



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# File 'lib/kamal/commands/proxy.rb', line 68

def list(name: container_name, json: false)
  docker :exec, name, "kamal-proxy", :list, *("--json" if json)
end

#loadbalancer ⇒ Object 



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# File 'lib/kamal/commands/proxy.rb', line 226

def loadbalancer
  @loadbalancer ||= Kamal::Commands::Loadbalancer.new(config, loadbalancer_config: KAMAL.loadbalancer_config)
end

#logs(timestamps: true, since: nil, lines: nil, grep: nil, grep_options: nil) ⇒ Object 



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# File 'lib/kamal/commands/proxy.rb', line 138

def logs(timestamps: true, since: nil, lines: nil, grep: nil, grep_options: nil)
  pipe \
    docker(:logs, container_name, ("--since #{since}" if since), ("--tail #{lines}" if lines), ("--timestamps" if timestamps), "2>&1"),
    ("grep '#{grep}'#{" #{grep_options}" if grep_options}" if grep)
end

#mount_destinations ⇒ Object

One mount destination per line - what the running container was actually booted with, as opposed to what the current configuration would mount.



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# File 'lib/kamal/commands/proxy.rb', line 82

def mount_destinations
  docker :inspect, container_name, "--format", "'{{range .Mounts}}{{println .Destination}}{{end}}'"
end

#next_container_name ⇒ Object 



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# File 'lib/kamal/commands/proxy.rb', line 92

def next_container_name
  "#{container_name}-next"
end

#port_holder? ⇒ Boolean

Zero-downtime handoff commands (proxy/run port_holder mode)

Returns:

  • (Boolean) 


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# File 'lib/kamal/commands/proxy.rb', line 88

def port_holder?
  proxy_run_config&.port_holder? || false
end

#promote_next_container ⇒ Object 



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# File 'lib/kamal/commands/proxy.rb', line 134

def promote_next_container
  docker :container, :rename, next_container_name, container_name
end

#pull ⇒ Object 



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# File 'lib/kamal/commands/proxy.rb', line 60

def pull
  if proxy_run_config
    docker :pull, proxy_run_config.image
  else
    docker :pull, "#{substitute(read_image)}:#{substitute(read_image_version)}"
  end
end

#read_boot_options ⇒ Object 



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# File 'lib/kamal/commands/proxy.rb', line 194

def read_boot_options
  read_file(config.proxy_boot.options_file, default: config.proxy_boot.default_boot_options.join(" "))
end

#read_image ⇒ Object 



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# File 'lib/kamal/commands/proxy.rb', line 198

def read_image
  read_file(config.proxy_boot.image_file, default: config.proxy_boot.image_default)
end

#read_image_version ⇒ Object 



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# File 'lib/kamal/commands/proxy.rb', line 202

def read_image_version
  read_file(config.proxy_boot.image_version_file, default: Kamal::Configuration::Proxy::Run::MINIMUM_VERSION)
end

#read_run_command ⇒ Object 



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# File 'lib/kamal/commands/proxy.rb', line 206

def read_run_command
  read_file(config.proxy_boot.run_command_file)
end

#remove_container ⇒ Object 



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# File 'lib/kamal/commands/proxy.rb', line 155

def remove_container
  docker :container, :prune, "--force", "--filter", "label=org.opencontainers.image.title=kamal-proxy"
end

#remove_image ⇒ Object 



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# File 'lib/kamal/commands/proxy.rb', line 159

def remove_image
  docker :image, :prune, "--all", "--force", "--filter", "label=org.opencontainers.image.title=kamal-proxy"
end

#remove_proxy_directory ⇒ Object 



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# File 'lib/kamal/commands/proxy.rb', line 176

def remove_proxy_directory
  remove_directory config.proxy_boot.host_directory
end

#remove_proxy_secrets_file ⇒ Object

Static path rather than proxy_run_config.secrets_path: the file must be removable precisely when the run config (or its secrets) is gone.



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# File 'lib/kamal/commands/proxy.rb', line 186

def remove_proxy_secrets_file
  remove_file File.join(config.proxy_boot.host_directory, Kamal::Configuration::Proxy::Run::SECRETS_FILENAME)
end

#remove_stopped_container(name: container_name) ⇒ Object 



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# File 'lib/kamal/commands/proxy.rb', line 130

def remove_stopped_container(name: container_name)
  docker :container, :rm, name
end

#reset_boot_options ⇒ Object 



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# File 'lib/kamal/commands/proxy.rb', line 210

def reset_boot_options
  remove_file config.proxy_boot.options_file
end

#reset_image ⇒ Object 



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# File 'lib/kamal/commands/proxy.rb', line 214

def reset_image
  remove_file config.proxy_boot.image_file
end

#reset_image_version ⇒ Object 



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# File 'lib/kamal/commands/proxy.rb', line 218

def reset_image_version
  remove_file config.proxy_boot.image_version_file
end

#reset_run_command ⇒ Object 



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# File 'lib/kamal/commands/proxy.rb', line 222

def reset_run_command
  remove_file config.proxy_boot.run_command_file
end

#run(digest: nil, name: nil) ⇒ Object 



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# File 'lib/kamal/commands/proxy.rb', line 12

def run(digest: nil, name: nil)
  if proxy_run_config
    docker \
      :run,
      "--name", name || container_name,
      *proxy_run_config.network_args,
      "--detach",
      "--restart", "unless-stopped",
      "--volume", "kamal-proxy-config:/home/kamal-proxy/.config/kamal-proxy",
      *config_digest_label_args(digest),
      *proxy_run_config.docker_options_args,
      *proxy_run_config.image,
      *proxy_run_config.run_command
  else
    pipe boot_config, xargs(docker_run(digest: digest))
  end
end

#run_holder ⇒ Object 



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# File 'lib/kamal/commands/proxy.rb', line 96

def run_holder
  docker \
    :run,
    "--name", proxy_run_config.holder_container_name,
    "--network", "kamal",
    "--detach",
    "--restart", "unless-stopped",
    *proxy_run_config.holder_docker_args,
    *proxy_run_config.image,
    "kamal-proxy", "hold"
end

#start ⇒ Object 



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# File 'lib/kamal/commands/proxy.rb', line 30

def start
  docker :container, :start, container_name
end

#start_holder_or_run ⇒ Object 



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# File 'lib/kamal/commands/proxy.rb', line 108

def start_holder_or_run
  combine docker(:container, :start, proxy_run_config.holder_container_name), run_holder, by: "||"
end

#start_or_run(digest: nil) ⇒ Object 



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# File 'lib/kamal/commands/proxy.rb', line 38

def start_or_run(digest: nil)
  combine start, run(digest: digest), by: "||"
end

#stop(name: container_name, timeout: nil) ⇒ Object 



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# File 'lib/kamal/commands/proxy.rb', line 34

def stop(name: container_name, timeout: nil)
  docker :container, :stop, *("--time #{timeout}" if timeout), name
end

#version ⇒ Object 



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# File 'lib/kamal/commands/proxy.rb', line 46

def version
  pipe \
    docker(:inspect, container_name, "--format '{{.Config.Image}}'"),
    [ :awk, "-F:", "'{print \$NF}'" ]
end

#wait_for_exit(name: container_name) ⇒ Object 



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# File 'lib/kamal/commands/proxy.rb', line 126

def wait_for_exit(name: container_name)
  docker :wait, name
end