Merge pull request #1099 from mrbongiolo/feat-secrets-add-doppler-adapter

feat(secrets): add Doppler adapter

lib/kamal/cli/secrets.rb

@@ -1,11 +1,17 @@
 class Kamal::Cli::Secrets < Kamal::Cli::Base
   desc "fetch [SECRETS...]", "Fetch secrets from a vault"
   option :adapter, type: :string, aliases: "-a", required: true, desc: "Which vault adapter to use"
-  option :account, type: :string, required: true, desc: "The account identifier or username"
+  option :account, type: :string, required: false, desc: "The account identifier or username"
   option :from, type: :string, required: false, desc: "A vault or folder to fetch the secrets from"
   option :inline, type: :boolean, required: false, hidden: true
   def fetch(*secrets)
-    results = adapter(options[:adapter]).fetch(secrets, **options.slice(:account, :from).symbolize_keys)
+    adapter = initialize_adapter(options[:adapter])
+
+    if adapter.requires_account? && options[:account].blank?
+      return puts "No value provided for required options '--account'"
+    end
+
+    results = adapter.fetch(secrets, **options.slice(:account, :from).symbolize_keys)
 
     return_or_puts JSON.dump(results).shellescape, inline: options[:inline]
   end
@@ -29,7 +35,7 @@ class Kamal::Cli::Secrets < Kamal::Cli::Base
   end
 
   private
-    def adapter(adapter)
+    def initialize_adapter(adapter)
       Kamal::Secrets::Adapters.lookup(adapter)
     end
 

lib/kamal/secrets/adapters/base.rb

@@ -1,13 +1,20 @@
 class Kamal::Secrets::Adapters::Base
   delegate :optionize, to: Kamal::Utils
 
-  def fetch(secrets, account:, from: nil)
+  def fetch(secrets, account: nil, from: nil)
+    raise RuntimeError, "Missing required option '--account'" if requires_account? && account.blank?
+
     check_dependencies!
+
     session = login(account)
     full_secrets = secrets.map { |secret| [ from, secret ].compact.join("/") }
     fetch_secrets(full_secrets, account: account, session: session)
   end
 
+  def requires_account?
+    true
+  end
+
   private
     def login(...)
       raise NotImplementedError

lib/kamal/secrets/adapters/doppler.rb

@@ -0,0 +1,53 @@
+class Kamal::Secrets::Adapters::Doppler < Kamal::Secrets::Adapters::Base
+  def requires_account?
+    false
+  end
+
+  private
+    def login(*)
+      unless loggedin?
+        `doppler login -y`
+        raise RuntimeError, "Failed to login to Doppler" unless $?.success?
+      end
+    end
+
+    def loggedin?
+      `doppler me --json 2> /dev/null`
+      $?.success?
+    end
+
+    def fetch_secrets(secrets, **)
+      project_and_config_flags = ""
+      unless service_token_set?
+        project, config, _ = secrets.first.split("/")
+
+        unless project && config
+          raise RuntimeError, "Missing project or config from '--from=project/config' option"
+        end
+
+        project_and_config_flags = "-p #{project.shellescape} -c #{config.shellescape}"
+      end
+
+      secret_names = secrets.collect { |s| s.split("/").last }
+
+      items = `doppler secrets get #{secret_names.map(&:shellescape).join(" ")} --json #{project_and_config_flags}`
+      raise RuntimeError, "Could not read #{secrets} from Doppler" unless $?.success?
+
+      items = JSON.parse(items)
+
+      items.transform_values { |value| value["computed"] }
+    end
+
+    def service_token_set?
+      ENV["DOPPLER_TOKEN"] && ENV["DOPPLER_TOKEN"][0, 5] == "dp.st"
+    end
+
+    def check_dependencies!
+      raise RuntimeError, "Doppler CLI is not installed" unless cli_installed?
+    end
+
+    def cli_installed?
+      `doppler --version 2> /dev/null`
+      $?.success?
+    end
+end

lib/kamal/secrets/adapters/test_optional_account.rb

@@ -0,0 +1,5 @@
+class Kamal::Secrets::Adapters::TestOptionalAccount < Kamal::Secrets::Adapters::Test
+  def requires_account?
+    false
+  end
+end