Copy directory instead of cloning an entire repository (#135)

* Copy directory instead of cloning an entire repository

* Improve haddock of types

* Rename new ADT to Source

* Add tests for new configuration

* Update changelog and readme

* Addres PR comments

* Updated changelog and hapistrano's version

Co-authored-by: Juan Paucar <jpaucar@stackbuilders.com>

CHANGELOG.md

@@ -1,4 +1,7 @@
-## master
+## 0.4.0.0
+### Added
+* Copy a directory's contents with `local_directory` instead of using _git_ with `repo` and `revision`.
+
 ### Changed
 * Update upper bounds for `path` and `path-io` packages.
 

README.md

@@ -32,15 +32,18 @@ filesystem and deletes previous releases to avoid filling up the disk.
 
 ## Usage
 
-Hapistrano 0.3.0.0 looks for a configuration file called `hap.yaml` that
+Hapistrano 0.4.0.0 looks for a configuration file called `hap.yaml` that
 typically looks like this:
 
 ```yaml
 deploy_path: '/var/projects/my-project'
 host: myserver.com
 port: 2222
+# To perform version control operations
 repo: 'https://github.com/stackbuilders/hapistrano.git'
 revision: origin/master
+# To copy the contents of the directory
+local_directory: '/tmp/my-project'
 build_script:
   - stack setup
   - stack build
@@ -50,10 +53,16 @@ restart_command: systemd restart my-app-service
 The following parameters are required:
 
 * `deploy_path` — the root of the deploy target on the remote host.
+* Related to the `source` of the repository, you have the following options:
+  - _Git repository_ **default** — consists of two parameters. When these are set,
+    hapistrano will perform version control related operations.
+    **Note:** Only GitHub is supported.
     * `repo` — the origin repository.
     * `revision` — the SHA1 or branch to deploy. If a branch, you will need to
       specify it as `origin/branch_name` due to the way that the cache repo is
       configured.
+  * `local_directory` — when this parameter is set, hapistrano will copy the
+    contents of the directory.
 
 The following parameters are *optional*:
 

app/Main.hs

@@ -4,7 +4,6 @@
 
 module Main (main) where
 
-import qualified Config                     as C
 import           Control.Concurrent.Async
 import           Control.Concurrent.STM
 import           Control.Monad
@@ -21,6 +20,7 @@ import           Paths_hapistrano           (version)
 import           System.Exit
 import qualified System.Hapistrano          as Hap
 import qualified System.Hapistrano.Commands as Hap
+import qualified System.Hapistrano.Config   as C
 import qualified System.Hapistrano.Core     as Hap
 import           System.Hapistrano.Types
 import           System.IO
@@ -125,8 +125,7 @@ main = do
   C.Config{..} <- Yaml.loadYamlSettings [optsConfigFile] [] Yaml.useEnv
   chan <- newTChanIO
   let task rf = Task { taskDeployPath    = configDeployPath
-                     , taskRepository    = configRepo
-                     , taskRevision      = configRevision
+                     , taskSource        = configSource
                      , taskReleaseFormat = rf }
   let printFnc dest str = atomically $
         writeTChan chan (PrintMsg dest str)
@@ -141,6 +140,8 @@ main = do
                           then Hap.pushRelease (task releaseFormat)
                           else Hap.pushReleaseWithoutVc (task releaseFormat)
               rpath <- Hap.releasePath configDeployPath release
+              forM_ (toMaybePath configSource) $ \src ->
+                Hap.scpDir src rpath
               forM_ configCopyFiles $ \(C.CopyThing src dest) -> do
                 srcPath  <- resolveFile' src
                 destPath <- parseRelFile dest

fixtures/git_repository_config.yaml

@@ -0,0 +1,4 @@
+deploy_path: '/'
+host: www.example.com
+repo: 'my-repo'
+revision: 'my-revision'

fixtures/local_directory_config.yaml

@@ -0,0 +1,3 @@
+deploy_path: '/'
+host: www.example.com
+local_directory: '/'

hapistrano.cabal

@@ -1,5 +1,5 @@
 name:                hapistrano
-version:             0.3.10.1
+version:             0.4.0.0
 synopsis:            A deployment library for Haskell applications
 description:
   .
@@ -48,6 +48,7 @@ library
   hs-source-dirs:      src
   exposed-modules:     System.Hapistrano
                      , System.Hapistrano.Commands
+                     , System.Hapistrano.Config
                      , System.Hapistrano.Core
                      , System.Hapistrano.Types
                      , System.Hapistrano.Commands.Internal
@@ -64,6 +65,7 @@ library
                      , typed-process      >= 0.2 && < 0.3
                      , time               >= 1.5 && < 1.10
                      , transformers       >= 0.4 && < 0.6
+                     , yaml               >= 0.8.16 && < 0.12
   if flag(dev)
     ghc-options:       -Wall -Werror
   else
@@ -73,8 +75,7 @@ library
 executable hap
   hs-source-dirs:      app
   main-is:             Main.hs
-  other-modules:       Config
-                     , Paths_hapistrano
+  other-modules:       Paths_hapistrano
   build-depends:       aeson              >= 0.11 && < 1.5
                      , async              >= 2.0.1.6 && < 2.4
                      , base               >= 4.8 && < 5.0
@@ -100,6 +101,7 @@ test-suite test
   hs-source-dirs:      spec
   main-is:             Spec.hs
   other-modules:       System.HapistranoSpec
+                     , System.HapistranoConfigSpec
                      , System.HapistranoPropsSpec
   build-depends:       base               >= 4.8 && < 5.0
                      , directory          >= 1.2.5 && < 1.4
@@ -113,6 +115,7 @@ test-suite test
                      , QuickCheck         >= 2.5.1 && < 3.0
                      , silently           >= 1.2 && < 1.3
                      , temporary          >= 1.1 && < 1.4
+                     , yaml               >= 0.8.16 && < 0.12
   build-tools:        hspec-discover   >= 2.0  && < 3.0
 
   if flag(dev)

spec/System/HapistranoConfigSpec.hs

@@ -0,0 +1,59 @@
+{-# LANGUAGE TemplateHaskell #-}
+module System.HapistranoConfigSpec
+  ( spec
+  ) where
+
+import           System.Hapistrano.Config (Config (..), Target (..))
+import           System.Hapistrano.Types  (Shell (..),
+                                           Source (..), TargetSystem (..))
+
+import qualified Data.Yaml.Config         as Yaml
+import           Path                     (mkAbsDir)
+import           Test.Hspec
+
+
+spec :: Spec
+spec =
+  describe "Hapistrano's configuration file" $ do
+    context "when the key 'local-repository' is present" $
+      it "loads LocalRepository as the configuration's source" $
+        Yaml.loadYamlSettings ["fixtures/local_directory_config.yaml"] [] Yaml.useEnv
+          >>=
+            (`shouldBe`
+              (defaultConfiguration
+              { configSource = LocalDirectory { localDirectoryPath = $(mkAbsDir "/") } }
+              )
+            )
+
+    context "when the keys 'repo' and 'revision' are present" $
+      it "loads GitRepository as the configuration's source" $
+        Yaml.loadYamlSettings ["fixtures/git_repository_config.yaml"] [] Yaml.useEnv
+          >>= (`shouldBe` defaultConfiguration)
+
+
+defaultConfiguration :: Config
+defaultConfiguration =
+  Config
+    { configDeployPath = $(mkAbsDir "/")
+    , configHosts =
+      [ Target
+          { targetHost = "www.example.com"
+          , targetPort = 22
+          , targetShell = Bash
+          , targetSshArgs = []
+          }
+      ]
+
+    , configSource = GitRepository "my-repo" "my-revision"
+    , configRestartCommand = Nothing
+    , configBuildScript = Nothing
+    , configCopyFiles = []
+    , configCopyDirs = []
+    , configLinkedFiles = []
+    , configLinkedDirs = []
+    , configVcAction = True
+    , configRunLocally = Nothing
+    , configTargetSystem = GNULinux
+    , configReleaseFormat = Nothing
+    , configKeepReleases = Nothing
+    }

spec/System/HapistranoSpec.hs

@@ -361,8 +361,11 @@ mkTaskWithCustomRevision :: Path Abs Dir -> Path Abs Dir -> String -> Task
 mkTaskWithCustomRevision deployPath repoPath revision =
   Task
     { taskDeployPath = deployPath
-    , taskRepository = fromAbsDir repoPath
-    , taskRevision = revision
+    , taskSource =
+        GitRepository
+          { gitRepositoryURL = fromAbsDir repoPath
+          , gitRepositoryRevision = revision
+          }
     , taskReleaseFormat = ReleaseLong
     }
 

src/System/Hapistrano.hs

@@ -55,11 +55,18 @@ import           System.Hapistrano.Types
 pushRelease :: Task -> Hapistrano Release
 pushRelease Task {..} = do
   setupDirs taskDeployPath
-  ensureCacheInPlace taskRepository taskDeployPath
+  pushReleaseForRepository taskSource
+  where
+    -- When the configuration is set for a local directory, it will only create
+    -- the release directory without any version control operations.
+    pushReleaseForRepository GitRepository {..} = do
+      ensureCacheInPlace gitRepositoryURL taskDeployPath
       release <- newRelease taskReleaseFormat
       cloneToRelease taskDeployPath release
-  setReleaseRevision taskDeployPath release taskRevision
+      setReleaseRevision taskDeployPath release gitRepositoryRevision
       return release
+    pushReleaseForRepository LocalDirectory {..} =
+      newRelease taskReleaseFormat
 
 -- | Same as 'pushRelease' but doesn't perform any version control
 -- related operations.

src/System/Hapistrano/Config.hs

@@ -4,12 +4,13 @@
 
 {-# OPTIONS_GHC -fno-warn-orphans #-}
 
-module Config
+module System.Hapistrano.Config
   ( Config (..)
   , CopyThing (..)
   , Target (..))
 where
 
+import           Control.Applicative        ((<|>))
 import           Data.Aeson
 import           Data.Function              (on)
 import           Data.List                  (nubBy)
@@ -20,6 +21,7 @@ import           Path
 import           System.Hapistrano.Commands
 import           System.Hapistrano.Types    (Shell(..),
                                              ReleaseFormat (..),
+                                             Source(..),
                                              TargetSystem (..))
 
 -- | Hapistrano configuration typically loaded from @hap.yaml@ file.
@@ -29,10 +31,8 @@ data Config = Config
     -- ^ Top-level deploy directory on target machine
   , configHosts          :: ![Target]
     -- ^ Hosts\/ports\/shell\/ssh args to deploy to. If empty, localhost will be assumed.
-  , configRepo           :: !String
-    -- ^ Location of repository that contains the source code to deploy
-  , configRevision       :: !String
-    -- ^ Revision to use
+  , configSource         :: !Source
+    -- ^ Location of the 'Source' that contains the code to deploy
   , configRestartCommand :: !(Maybe GenericCommand)
     -- ^ The command to execute when switching to a different release
     -- (usually after a deploy or rollback).
@@ -97,8 +97,10 @@ instance FromJSON Config where
     let first Target{..} = host
         configHosts = nubBy ((==) `on` first)
           (maybeToList (Target <$> host <*> pure port <*> pure shell <*> pure sshArgs) ++ hs)
-    configRepo       <- o .: "repo"
-    configRevision   <- o .: "revision"
+        source m =
+              GitRepository <$> m .: "repo" <*> m .: "revision"
+          <|> LocalDirectory <$> m .: "local_directory"
+    configSource  <- source o
     configRestartCommand <- (o .:? "restart_command") >>=
       maybe (return Nothing) (fmap Just . mkCmd)
     configBuildScript <- o .:? "build_script" >>=

src/System/Hapistrano/Types.hs

@@ -15,6 +15,7 @@ module System.Hapistrano.Types
   ( Hapistrano
   , Failure(..)
   , Config(..)
+  , Source(..)
   , Task(..)
   , ReleaseFormat(..)
   , SshOptions(..)
@@ -22,12 +23,14 @@ module System.Hapistrano.Types
   , Release
   , TargetSystem(..)
   , Shell(..)
+  -- * Types helpers
   , mkRelease
   , releaseTime
   , renderRelease
   , parseRelease
   , fromMaybeReleaseFormat
   , fromMaybeKeepReleases
+  , toMaybePath
   ) where
 
 import Control.Applicative
@@ -57,15 +60,28 @@ data Config =
     -- ^ How to print messages
     }
 
+-- | The source of the repository. It can be from a version control provider
+-- like GitHub or a local directory.
+data Source
+  = GitRepository
+      { gitRepositoryURL :: String
+      -- ^ The URL of remote Git repository to deploy
+      , gitRepositoryRevision :: String
+      -- ^ The SHA1 or branch to release
+      }
+  | LocalDirectory
+      { localDirectoryPath :: Path Abs Dir
+      -- ^ The local repository to deploy
+      }
+  deriving (Eq, Ord, Show)
+
 -- | The records describes deployment task.
 data Task =
   Task
     { taskDeployPath :: Path Abs Dir
     -- ^ The root of the deploy target on the remote host
-    , taskRepository :: String
-    -- ^ The URL of remote Git repo to deploy
-    , taskRevision :: String
-    -- ^ A SHA1 or branch to release
+    , taskSource :: Source
+    -- ^ The 'Source' to deploy
     , taskReleaseFormat :: ReleaseFormat
     -- ^ The 'ReleaseFormat' to use
     }
@@ -140,6 +156,9 @@ renderRelease (Release rfmt time) = formatTime defaultTimeLocale fmt time
         ReleaseShort -> releaseFormatShort
         ReleaseLong -> releaseFormatLong
 
+----------------------------------------------------------------------------
+-- Types helpers
+
 -- | Parse 'Release' identifier from a 'String'.
 parseRelease :: String -> Maybe Release
 parseRelease s =
@@ -166,3 +185,8 @@ fromMaybeKeepReleases cliKR configKR =
 
 defaultKeepReleases :: Natural
 defaultKeepReleases = 5
+
+-- | Get the local path to copy from the 'Source' configuration value.
+toMaybePath :: Source -> Maybe (Path Abs Dir)
+toMaybePath (LocalDirectory path) = Just path
+toMaybePath _                     = Nothing