GOPA, A Spider Written in Go.

Goal

• Light weight, low footprint, memory requirement should < 100MB
• Easy to deploy, no runtime or dependency required
• Easy to use, no programming or scripts ability needed, out of box features

Screenshoot

---

• How to use
  • Requirements
  • Setup
    • Download Pre Built Package
    • Compile The Package Manually
  • Required Config
  • Start
  • Stop
• Configuration
• UI
• API
• Architecture
• Contributing
• License

How to use

Requirements

• Elasticsearch v5.3+

Setup

First of all, get it, two opinions: download the pre-built package or compile it yourself.

Download Pre Built Package

Go to Release page, download the right package for your platform.

Note: Darwin is for Mac

Compile The Package Manually

Requirements

• Golang 1.9+

Supported platform

• Mac/Linux: Run make build to build the Gopa.
  
• Windows: Checkout this wiki page - How to build GOPA on windows.

For example:

#apt  install golang-go
#brew install golang
mkdir ~/go/src/github.com/infinitbyte/ -p
cd ~/go/src/github.com/infinitbyte/
git clone https://github.com/infinitbyte/gopa.git
cd gopa
make

After a few minutes, you should have:

gopa, the main program, a single binary.
gopa.yml, main configuration for gopa.

Required Config

Note: Elasticsearch version should >= v5.3

• Enable elastic module in gopa.yml, update the elasticsearch's setting:

elasticsearch:
- name: default
  enabled: true
  endpoint: http://localhost:9200
  index_prefix: gopa-
  basic_auth:
    username: elastic
    password: changeme

Start

Besides Elasticsearch, Gopa doesn't require any other dependencies, just simply run ./gopa to start the program.

Gopa can be run as daemon(Note: Only available on Linux and Mac):

Example

➜  gopa git:(master) ✗ ./bin/gopa --daemon
  ________ ________ __________  _____
 /  _____/ \_____  \\______   \/  _  \
/   \  ___  /   |   \|     ___/  /_\  \
\    \_\  \/    |    \    |  /    |    \
 \______  /\_______  /____|  \____|__  /
        \/         \/                \/
[gopa] 0.10.0_SNAPSHOT
///last commit: 99616a2, Fri Oct 20 14:04:54 2017 +0200, medcl, update version to 0.10.0 ///
[10-21 16:01:09] [INF] [instance.go:23] workspace: data/gopa/nodes/0
[gopa] started.

Also run ./gopa -h to get the full list of command line options.

Example

➜  gopa git:(master) ✗ ./bin/gopa -h
  ________ ________ __________  _____
 /  _____/ \_____  \\______   \/  _  \
/   \  ___  /   |   \|     ___/  /_\  \
\    \_\  \/    |    \    |  /    |    \
 \______  /\_______  /____|  \____|__  /
        \/         \/                \/
[gopa] 0.10.0_SNAPSHOT
///last commit: 99616a2, Fri Oct 20 14:04:54 2017 +0200, medcl, update version to 0.10.0 ///
Usage of ./bin/gopa:
-config string
the location of config file (default "gopa.yml")
-cpuprofile string
write cpu profile to this file
-daemon
run in background as daemon
-debug
run in debug mode, gopa will quit with panic error
-log string
the log level,options:trace,debug,info,warn,error (default "info")
-log_path string
the log path (default "log")
-memprofile string
write memory profile to this file
-pidfile string
pidfile path (only for daemon)
-pprof string
enable and setup pprof/expvar service, eg: localhost:6060 , the endpoint will be: http://localhost:6060/debug/pprof/ and http://localhost:6060/debug/vars

Stop

It's safety to press ctrl+c stop the current running Gopa, Gopa will handle the rest,saving the checkpoint, you may restore the job later, the world is still in your hand.

If you are running Gopa as daemon, you may stop it like this:

 kill -QUIT `pgrep gopa`

Configuration

UI

• Search Console http://127.0.0.1:9000/
• Admin Console http://127.0.0.1:9000/admin/

API

Architecture

Who uses it?

You use GOPA and you want to be listed there? Contact me.

License

Released under the Apache License, Version 2.0 .