Splunk Query for extracting tomcat logs- group by service name

[amitru]

I have a log in tomcat as -

... [MerchantEndPoint]: saveMerchantDetails():ednpoint execution enterd

..

... [CreditEndPoint]: saveCreditDetails():ednpoint execution enterd

-.. 

I want to create a chart based on the entry logs how many times service getting called /day

i have created a regex with below query but its not giving correct result, in regex editor it works fine

index=fg_wv_li | sourcetype="fg:mylogs.txt" ":endpoint execution started" | rex field=_raw "\b(?<stype>(\[]a-zA-Z]+\][:]))" | chart count by stype

i want as servicename:method name : count / day

[MerchantEndPoint]: saveMerchantDetails():    10

[CreditEndPoint]: saveCreditDetails() : 15 

Can someone help me to fix the query above?

Thanks.

[renjith_nair]

Try

|rex field=_raw "(?<stype>\[\w+\]:\s+\w+\(.*\))"

[amitru]

Thanks. It worked.