CentOS 7 安裝 Sbt 小記

OS: CentOS 7 in Chameleon Cloud

要開發 scala 與 spark 好像要裝 sbt 或是另外一個軟體

所以我就先選擇 sbt 來進行開發環境

sbt 入門資訊 http://www.scala-sbt.org/release/tutorial/zh-cn/index.html

可以參考 在Linux上安裝 sbt 這段

首先先來觀察 官方的 repo 設定

$ curl    https://bintray.com/sbt/rpm/rpm

#bintray--sbt-rpm - packages by  from Bintray

[bintray--sbt-rpm]

name=bintray--sbt-rpm

baseurl=http://dl.bintray.com/sbt/rpm

gpgcheck=0

enabled=1

接下來將他導成文字檔

$ curl   https://bintray.com/sbt/rpm/rpm  >   bintray-sbt-rpm.repo

 % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current

                                Dload  Upload   Total   Spent    Left  Speed

100   146    0   146    0     0    454      0 --:--:-- --:--:-- --:--:--   456

觀察資訊

$ ls

bintray-sbt-rpm.repo  scala-2.10.1.tgz           spark-1.4.0-bin-hadoop2.6.tgz

Install.sh            spark-1.4.0-bin-hadoop2.6

透過 sudo 來把 repo設定檔案放到 系統 yum.repos.d 目錄下

$ sudo  mv  bintray-sbt-rpm.repo   /etc/yum.repos.d/

這個時候就搜尋的到 sbt 套件了

$ sudo  yum  search   sbt

base                                                                        | 3.6 kB  00:00:00     

bintray--sbt-rpm                                                            | 1.2 kB  00:00:00     

epel/x86_64/metalink                                                        |  12 kB  00:00:00     

extras                                                                      | 3.4 kB  00:00:00     

openstack-juno                                                              | 2.9 kB  00:00:00     

updates                                                                     | 3.4 kB  00:00:00     

bintray--sbt-rpm/primary                                                    | 1.6 kB  00:00:00     

bintray--sbt-rpm                                                                               9/9

======================================== N/S matched: sbt =========================================

libreport-plugin-mantisbt.x86_64 : libreport's mantisbt plugin

sbt.noarch : Simple Build Tool for Scala-driven builds

 Name and summary matches only, use "search all" for everything.

安裝 sbt

$ sudo  yum  install   sbt   -y

Resolving Dependencies

--> Running transaction check

---> Package sbt.noarch 0:0.13.8-1 will be installed

--> Finished Dependency Resolution

Dependencies Resolved

=========================================================================================

Package          Arch                Version                  Repository                     Size

=========================================================================================

Installing:

sbt              noarch              0.13.8-1                 bintray--sbt-rpm              1.0 M

Transaction Summary

=========================================================================================

Install  1 Package

Total download size: 1.0 M

Installed size: 1.2 M

Downloading packages:

sbt-0.13.8.rpm                                                              | 1.0 MB  00:00:01     

Running transaction check

Running transaction test

Transaction test succeeded

Running transaction

 Installing : sbt-0.13.8-1.noarch                                                             1/1

 Verifying  : sbt-0.13.8-1.noarch                                                             1/1

Installed:

 sbt.noarch 0:0.13.8-1                                                                            

Complete!

Hello, world 測試

參考 http://www.scala-sbt.org/release/tutorial/zh-cn/Hello.html

$ mkdir hello

$ ls

hello  Install.sh  scala-2.10.1.tgz  spark-1.4.0-bin-hadoop2.6  spark-1.4.0-bin-hadoop2.6.tgz

$ cd  hello/

$ echo 'object Hi { def main(args: Array[String]) = println("Hi!") }' > hw.scala

$ cat hw.scala

object Hi { def main(args: Array[String]) = println("Hi!") }

$ sbt

Getting org.scala-sbt sbt 0.13.8 ...

downloading https://repo.typesafe.com/typesafe/ivy-releases/org.scala-sbt/compiler-interface/0.13.8/jars/compiler-interface-src.jar ...

Getting Scala 2.10.4 (for sbt)...

downloading https://repo1.maven.org/maven2/org/scala-lang/jline/2.10.4/jline-2.10.4.jar ...

[SUCCESSFUL ] org.scala-lang#jline;2.10.4!jline.jar (194ms)

downloading https://repo1.maven.org/maven2/org/fusesource/jansi/jansi/1.4/jansi-1.4.jar ...

[SUCCESSFUL ] org.fusesource.jansi#jansi;1.4!jansi.jar (159ms)

:: retrieving :: org.scala-sbt#boot-scala

confs: [default]

5 artifacts copied, 0 already retrieved (24459kB/42ms)

[info] Set current project to hello (in build file:/home/cc/hello/)

在界面下 執行

> run

[info] Updating {file:/home/cc/hello/}hello...

[info] Resolving org.fusesource.jansi#jansi;1.4 ...

[info] Done updating.

[info] Compiling 1 Scala source to /home/cc/hello/target/scala-2.10/classes...

[info] Running Hi

Hi!

[success] Total time: 3 s, completed 2015/7/13 下午 07:02:59

離開

> exit

按照上面的訊息,  產出到 target/scala-2.10/classes 目錄下

觀察資訊, 看到兩個  .class 檔案

$ ls   target/scala-2.10/classes/

Hi.class  Hi$.class

批次模式( 非互動 )

• $sbt  compile
• 這邊有注意到, 因為之前  build.sbt 設定的關係
• 所以編出來的 scala 版本會依照 build.sbt 內的設定     

常用命令

• clean
• 刪除所有在 target 目錄下產生的文件
• compile
• 編譯 source code ( src/main/scala 與 src/main/java 目錄下 )
• test
• 編譯與執行所有測試
• console
• 進到 scala 互動界面
• 打 :quit離開
• run <參數>*
• 執行 main class
• package
• 建立 jar 檔案
• 根據 src/main/resources與 src/main/scala 及 src/main/java
• help <命令>
• reload
• reload build.sbt, project/*.scala, project/*.sbt  

下次應該可以考慮 寫成  shell script 自動安裝
^^

~ enjoy it