This is a command line application.
This application maintains no state, every time a view is requested by the get command it rebuilds the view with the state from the file.
to run the application from a linux machine simple execute the binary, or install go on your machine and execute go run logdb.go
Example:
goudsbloem@goudsbloem-MS-7597 ~/go/src/sample $ ./logdb
welcome to logDB
> add an entry: put={"key":"<entry name>","value":<integer value>}`
> get the sum of the values: get{"key":"<entry name>", "value":"sum"}
> get the last entry value: get{"key":"<entry name>", "value":"last"}
> put={"key":"mydb","value":123}
ok {"key":"position","value":0}
> put={"key":"mydb","value":27}
ok {"key":"position","value":4}
> get={"key":"mydb","value":"sum"}
ok {"key":"sum","value":150}
> put={"key":"mydb","value":-100}
ok {"key":"position","value":7}
> get={"key":"mydb","value":"sum"}
ok {"key":"sum","value":50}
> get={"key":"mydb","value":"last"}
ok {"key":"last","value":-100}
the mydb file contains:
goudsbloem@goudsbloem-MS-7597 ~/go/src/sample $ cat mydb
123
27
-100
code is hosted on https://github.com/wgoudsbloem/logdb
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