使用shell进行日志分析(r2第14天)

最近做数据批量加载的时候，是通过pl/sql嵌在shell脚本里执行的。脚本运行后生成的日志类似如下的格式


Get Dump file for APP_TMP.TESTRESS_NAME_LINK...
Elapsed: 00:00:00.64
.
DB details is accessible from source schema ...
.
DB details is accessible from target schema ...
.
Directory  ext_datapump_dir has read,write permission ,proceed...
.
SYNONYM TESTEEMENT exists in CONNECT account,proceed...
.


Get Dump file for APP_TMP.TESTEEMENT...
Elapsed: 00:00:00.49
.
DB details is accessible from source schema ...
.
DB details is accessible from target schema ...
.
Directory  ext_datapump_dir has read,write permission ,proceed...
.
SYNONYM TESTEEMENT_RESOURCE exists in CONNECT account,proceed...
.

因为表比较多，所以日志看起来不是很清晰，想生成类似报表的格式来查看每个表耗费了多长时间，就一目了然了。

期望的结果类似下面的样子。

#########################################################################
Table_name                                          Elapsed        time  
#########################################################################
APP_TMP.TESTRESS_DATA...                            Elapsed: 00:00:01.13  
APP_TMP.TESTRESS_NAME_LINK...                       Elapsed: 00:00:00.64  
APP_TMP.TESTEEMENT...                               Elapsed: 00:00:00.49  
APP_TMP.TESTEEMENT_RESOURCE...                      Elapsed: 00:00:00.74  
APP_TMP.TEST_RES_HISTORY...                         Elapsed: 00:00:00.82  
APP_TMP.TEST_ACCOUNT...                             Elapsed: 00:00:01.03  
APP_TMP.TEST_ADDRESS_NAME...                        Elapsed: 00:00:00.78  
APP_TMP.TEST_AGED_TRIAL_BALANCE...                  Elapsed: 00:00:01.16  
APP_TMP.TEST_BILLING_ARRANGEMENT...                 Elapsed: 00:00:00.61  
APP_TMP.TEST_CHARGE_GROUP...                        Elapsed: 00:00:01.66  
APP_TMP.TEST_CHARGES...                             Elapsed: 00:00:06.73  
APP_TMP.TEST_CREDIT_DEBIT_LINK...                   Elapsed: 00:00:01.67  
APP_TMP.TEST_CUSTOMER_CREDIT...                     Elapsed: 00:00:00.40  
APP_TMP.TEST_DEPOSIT_REQUEST...                     Elapsed: 00:00:00.10  
APP_TMP.TEST_DIRECT_DEBIT_REQUEST...                Elapsed: 00:00:00.67  
APP_TMP.TEST_INVOICE...                             Elapsed: 00:00:01.98  
APP_TMP.TEST_PAY_CHANNEL...                         Elapsed: 00:00:00.53  
APP_TMP.TEST_PAYMENT...                             Elapsed: 00:00:01.28  
APP_TMP.TEST_PAYMENT_ACTIVITY...                    Elapsed: 00:00:00.19  


首先是根据关键字找到对应的行，下一行就是耗费的时间。想通过命令简单的实现。最后grep帮了大忙。
grep   -A1  --color=auto  "Get Dump file for "  extract.log
输出类似下面的样子。
--
Get Dump file for APP_TMP.TESTTOMER...
Elapsed: 00:00:00.91
--
Get Dump file for APP_TMP.TESTNT_DISTRIBUTE...
Elapsed: 00:00:00.84
--
Get Dump file for APP_TMP.TEST_MEMO...
Elapsed: 00:00:22.27
--
Get Dump file for APP_TMP.TESTE_DATA...
Elapsed: 00:00:01.55
--

达到了初步效果。就需要把冗余的信息去除“Get Dump file for "，然后能让对应的执行时间横向显示。
可以使用sed来做。
sed 's/Get Dump file for //' |sed 'N;N;s/n/  /g'

APP_TMP.TESTRESS_DATA...  Elapsed: 00:00:01.13  --
APP_TMP.TESTRESS_NAME_LINK...  Elapsed: 00:00:00.64  --
APP_TMP.TESTEEMENT...  Elapsed: 00:00:00.49  --
APP_TMP.TESTEEMENT_RESOURCE...  Elapsed: 00:00:00.74  --

效果基本达到了，但是显示比较粗糙，不规整，这个时候awk能帮上大忙了。
使用如下的脚本来格式化输出
awk '
BEGIN{
print "#########################################################################"
printf "%-50s %8s %11s  n", "Table_name","Elapsed","time"
print "#########################################################################"
}
{printf "%-50s %8s %11s  n", $1,$2,$3,$4
}'


这样环环相扣，就可以输出基本完整的报告了。完整命令如下：
grep   -A1  --color=auto  "Get Dump file for "  extract.log |sed 's/Get Dump file for //' |sed 'N;N;s/n/  /g' |awk '
BEGIN{
print "#########################################################################"
printf "%-50s %8s %11s  n", "Table_name","Elapsed","time"
print "#########################################################################"
}
{printf "%-50s %8s %11s  n", $1,$2,$3,$4
}'

输出：
#########################################################################
Table_name                                          Elapsed        time  
#########################################################################
APP_TMP.TESTRESS_DATA...                            Elapsed: 00:00:01.13  
APP_TMP.TESTRESS_NAME_LINK...                       Elapsed: 00:00:00.64  
APP_TMP.TESTEEMENT...                               Elapsed: 00:00:00.49