#!/bin/bash
source install_lang
####### garbage here #############
function mainFunction ( )
{
echo "$Good"
}
function braBraBra ( )
{
echo "$Bra_Bra_Bra"
}
####### garbage end ###############



####### fafa code here ###########

# 參數假設
# /home/nutchuser/NutchEZ_source下有3個檔案
# install.sh, nutch-1.0.tar.gz, apache-tomcat-6.0.18.tar.gz
# 安裝路徑為/opt/NutchEZ

Install_source=/home/nutchuser/NutchEZ_source
NutchEZ_HOME=/opt/NutchEZ
MasterIP_Address=`/sbin/ifconfig eth0 | grep 'inet addr' |  sed 's/^.*addr://g' | sed 's/Bcast.*$//g' | sed 's/ .*// '`


set_install_information () {
  read -p "Please enter administrator's e-mail address:  " Admin_email
  read -p "Please enter the Master DNS:  " MasterDNS
}

show_info () {
  echo "Administrator's e-mail address is $Admin_email."
  echo "The master DNS is: $MasterDNS"
}

confirm_install_information () {
  read -p "Please confirm your install infomation: 1.Yes 2.No  " confirm
}

# set $NutchEZ_HOME/conf/hadoop-env.sh
set_hadoop-env () {
  echo "set $NutchEZ_HOME/conf/hadoop-env.sh"
  cd $NutchEZ_HOME/conf/
  cat >> hadoop-env.sh << EOF
export JAVA_HOME=/usr/lib/jvm/java-6-sun
export HADOOP_HOME=$NutchEZ_HOME
export HADOOP_LOG_DIR=/tmp/NutchEZ/logs
export HADOOP_SLAVES=$NutchEZ_HOME/conf/slaves
export HADOOP_CONF_DIR=$NutchEZ_HOME/conf
export HADOOP_PID_DIR=/tmp/hadoop/pid
export NUTCH_HOME=$NutchEZ_HOME
export NUTCH_CONF_DIR=$NutchEZ_HOME/conf
EOF
}

# set $NutchEZ_HOME/conf/hadoop-site.xml
set_haoop-site () {
  echo "set $NutchEZ_HOME/conf/hadoop-site.xml"
  cd $NutchEZ_HOME/conf/
  cat > hadoop-site.xml << EOF
<configuration>
<property>
    <name>fs.default.name</name>
    <value>$MasterDNS:9000</value>
    <description> The name of the default file system. Either the literal string "local" or a host:port for NDFS. </description>
</property>
<property>
    <name>mapred.job.tracker</name>
    <value>$MasterDNS:9001</value>
    <description> The host and port that the MapReduce job tracker runs at. If "local", then jobs are run in-process as a single map and reduce task. </description>
</property>
</configuration>
EOF
}

set_nutch-site () {
  echo "set $NutchEZ_HOME/conf/nutch-site.xml"
  cd $NutchEZ_HOME/conf/
  cat > nutch-site.xml << EOF
<configuration>
<property>
  <name>http.agent.name</name>
  <value>nutchuser</value>
  <description>HTTP 'User-Agent' request header. </description>
</property>
<property>
  <name>http.agent.description</name>
  <value>MyTest</value>
  <description>Further description</description>
</property>
<property>
  <name>http.agent.url</name>
  <value>$MasterDNS</value>
  <description>A URL to advertise in the User-Agent header. </description>
</property>
<property>
  <name>$MasterDNS</name>
  <value>$Admin_email</value>
  <description>An email address
  </description>
</property>
</configuration>
EOF
}


set_crawl-urlfilter () {
  echo "set $NutchEZ_HOME/conf/set_crawl-urlfilter.txt"
  Line_NO=`cat $NutchEZ_HOME'/conf/crawl-urlfilter.txt' | grep -n 'skip file:, ftp:, & mailto: urls' | sed 's/:.*//g'`
  sed -i ''$((Line_NO+1))'d' $NutchEZ_HOME/conf/crawl-urlfilter.txt
  sed -i ''$Line_NO'a -^(ftp|mailto):' $NutchEZ_HOME/conf/crawl-urlfilter.txt


  Line_NO=`cat $NutchEZ_HOME'/conf/crawl-urlfilter.txt' | grep -n 'skip image and other suffixes we can' | sed 's/:.*//g'`
  sed -i ''$((Line_NO+1))'d' $NutchEZ_HOME/conf/crawl-urlfilter.txt
  sed -i ''$Line_NO'a -\\.(gif|GIF|jpg|JPG|png|PNG|ico|ICO|css|sit|eps|wmf|mpg|xls|gz|rpm|tgz|mov|MOV|exe|jpeg|JPEG|bmp|BMP)$' $NutchEZ_HOME/conf/crawl-urlfilter.txt


  Line_NO=`cat $NutchEZ_HOME'/conf/crawl-urlfilter.txt' | grep -n 'skip URLs containing certain characters as probable queries, etc.' | sed 's/:.*//g'`
  sed -i ''$((Line_NO+1))'d' $NutchEZ_HOME/conf/crawl-urlfilter.txt
  sed -i ''$Line_NO'a -[*!@]' $NutchEZ_HOME/conf/crawl-urlfilter.txt


  Line_NO=`cat $NutchEZ_HOME'/conf/crawl-urlfilter.txt' | grep -n 'skip everything else' | sed 's/:.*//g'`
  sed -i ''$((Line_NO+1))'d' $NutchEZ_HOME/conf/crawl-urlfilter.txt
  sed -i ''$Line_NO'a +.*' $NutchEZ_HOME/conf/crawl-urlfilter.txt
  sed -i ''$Line_NO'a # accecpt anything else' $NutchEZ_HOME/conf/crawl-urlfilter.txt
}

format_HDFS () {
  echo "format HDFS..."
  $NutchEZ_HOME/bin/hadoop namenode -format
}

start_up_NutchEZ (){
  echo "start up NutchEZ..."
  $NutchEZ_HOME/bin/start-all.sh
}

set_server () {
  echo "$NutchEZ_HOME/tomcat/conf/server.xml"
  Line_NO=`cat $NutchEZ_HOME'/tomcat/conf/server.xml' | grep -n '<!-- A "Connector" using the shared thread pool-->' | sed 's/:.*//g'`

  sed -i ''$((Line_NO+1))','$((Line_NO+6))'d' $NutchEZ_HOME/tomcat/conf/server.xml
  sed -i ''$Line_NO'a    <Connector port="8080" protocol="HTTP/1.1"\
               connectionTimeout="20000"\
               redirectPort="8443" URIEncoding="UTF-8"\
               useBodyEncodingForURI="true" />\
' $NutchEZ_HOME/tomcat/conf/server.xml
}


set_nutch-site2 () {
  echo "$NutchEZ_HOME/tomcat/webapps/ROOT/WEB-INF/classes/nutch-site.xml"
  
  # 搜尋加入設定的行號位址
  line_NO=`cat $NutchEZ_HOME'/tomcat/webapps/ROOT/WEB-INF/classes/nutch-site.xml' | grep -n '<'configuration'>' | sed 's/:.*//g'`
  
  # 加入設定檔
  sed -i ''$line_NO'a  <property>\
  <name>http.agent.name</name>\
  <value>nutch</value>\
  <description>HTTP 'User-Agent' request header. </description> \
</property>\
<property>\
  <name>http.agent.description</name>\
  <value>MyTest</value>\
  <description>Further description</description> \
</property>\
<property>\
  <name>http.agent.url</name> \
  <value>localhost</value> \
  <description>A URL to advertise in the User-Agent header. </description> \
</property>\
<property>\
  <name>http.agent.email</name>\
  <value>'$Admin_email'</value> \
  <description>An email address \
  </description> \
</property>\
<property>\
  <name>plugin.folders</name>\
  <value>'$NutchEZ_HOME'/plugins</value>\
  <description>Directories where nutch plugins are located. </description>\
</property>\
<property>\
  <name>plugin.includes</name>\
  <value>protocol-(http|httpclient)|urlfilter-regex|parse-(text|html|js|ext|msexcel|mspowerpoint|msword|oo|pdf|rss|swf|zip)|index-(more|basic|anchor)|query-(more|basic|site|url)|response-(json|xml)|summary-basic|scoring-opic|urlnormalizer-(pass|regex|basic)</value>\
  <description> Regular expression naming plugin directory names</description>\
 </property>\
 <property>\
  <name>parse.plugin.file</name>\
  <value>parse-plugins.xml</value>\
  <description>The name of the file that defines the associations between\
  content-types and parsers.</description>\
 </property>\
 <property>\
   <name>db.max.outlinks.per.page</name>\
   <value>-1</value>\
   <description> </description>\
 </property> \
 <property>\
   <name>http.content.limit</name> \
   <value>-1</value>\
 </property>\
<property>\
  <name>indexer.mergeFactor</name>\
  <value>500</value>\
  <description>The factor that determines the frequency of Lucene segment\
  merges. This must not be less than 2, higher values increase indexing\
  speed but lead to increased RAM usage, and increase the number of\
  open file handles (which may lead to "Too many open files" errors).\
  NOTE: the "segments" here have nothing to do with Nutch segments, they\
  are a low-level data unit used by Lucene.\
  </description>\
</property>\

<property>\
  <name>indexer.minMergeDocs</name>\
  <value>500</value>\
  <description>This number determines the minimum number of Lucene\
  Documents buffered in memory between Lucene segment merges. Larger\
  values increase indexing speed and increase RAM usage.\
  </description>\
</property>\

' $NutchEZ_HOME/tomcat/webapps/ROOT/WEB-INF/classes/nutch-site.xml
}


set_Nutch_conf () {
  set_hadoop-env
  set_haoop-site
  set_nutch-site
  set_crawl-urlfilter
}


Install_Nutch () {
  cd /opt
  tar zxf /opt/nutch-1.0.tar.gz
#  tar zxvf /opt/nutch-1.0.tar.gz
  mv /opt/nutch-1.0  NutchEZ
  chown -R nutchuser:nutchuser $NutchEZ_HOME
  set_Nutch_conf
}

# install tomcat
Install_Tomcat () {
  cd /opt/
#  tar zxvf apache-tomcat-6.0.18.tar.gz
  tar zxf apache-tomcat-6.0.18.tar.gz
  mv apache-tomcat-6.0.18 $NutchEZ_HOME
  cd $NutchEZ_HOME
  mv  apache-tomcat-6.0.18 tomcat
  mkdir web
  # mkdir $NutchEZ_HOME/search
  chown -R nutchuser:nutchuser $NutchEZ_HOME
  jar -xvf nutch-1.0.war web
  mv $NutchEZ_HOME/tomcat/webapps/ROOT $NutchEZ_HOME/tomcat/webapps/ROOT-ori
  mv $NutchEZ_HOME/web $NutchEZ_HOME/tomcat/webapps/ROOT
  set_server
  #set_nutch-site2
}

start_up_tomcat () {
  echo "start up tomcat..."
  $NutchEZ_HOME/tomcat/bin/startup.sh
}