Dave Walk davewalk

## go_projects_april17.md

      
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                davewalk
                / go_projects_april17.md
            
            
              Created
              April 11, 2017 00:12
            
              
                Interesting Go projects that perhaps you'll like (April 2017)
              
          
gods
alpaca
pet
realize
goreporter


## profiling.go
_ "net/http/pprof"

go func() {
  for _ = range time.Tick(time.Duration(10) * time.Second) {
    fmt.Printf("Number of goroutines: %d\n", runtime.NumGoroutine())
    var m runtime.MemStats
    runtime.ReadMemStats(&m)
    fmt.Printf("heap in use: %v\n", m.HeapInuse)
    fmt.Printf("heap alloc: %v\n", m.HeapAlloc)
    fmt.Printf("next GC: %v\n", m.NextGC)

## interface_slice.go
package main

import (
	"encoding/json"
	"fmt"
	"reflect"
	"strings"
)

type Product struct {

## custom_unmarshal.go
package main

import (
	"encoding/json"
	"fmt"
)

type Record struct {
	SiteId   string      `json:"site_id"`
	JsonData interface{} `json:"json_data"`

## gist:69e0bd8fd1b4e0c2db81
cat ip-ranges.json | jq '.prefixes' | jq '.[]' | jq '.service = "EC2"' | jq '.region = "us-east-1"' | jq '.ip_prefix' > ec2-us-east-1-ranges.txt

## docker bulk container delete
docker ps -a | grep "weeks ago" | awk '{print $1}' | xargs docker rm

## gist:64a6621db86adc8ebb75
geoip_country /usr/share/GeoIP/GeoIP.dat;

map $geoip_country_code $allowed_country {
    default no;
    US yes;
}

geo $inNet {
    default no;
    10.0.0.0/8 yes;

## gist:5211e7db094cee5082ca
# Get the charset of a table
SELECT CCSA.character_set_name FROM information_schema.`TABLES` T,
       information_schema.`COLLATION_CHARACTER_SET_APPLICABILITY` CCSA
WHERE CCSA.collation_name = T.table_collation
  AND T.table_schema = "schemaname"
  AND T.table_name = "tablename";

# Get a bunch of details about a table including its collation
SHOW TABLE STATUS IN dbname like 'tablename'

## gist:59a438325fca5214f3de
var util = require('util'),
  fs =require('fs');

// Print a nested object to the console for full inspection
console.log(util.inspect(data, showHidden=false, depth=16, colorize=true));

// Print a thing to a file
fs.writeFile('debug.txt', aThing, function(err) {
    if (err) console.log('Write error for some reason!');
});

## account.cfg
[login]
password = abc123
	_ "net/http/pprof"

	go func() {
	for _ = range time.Tick(time.Duration(10) * time.Second) {
	fmt.Printf("Number of goroutines: %d\n", runtime.NumGoroutine())
	var m runtime.MemStats
	runtime.ReadMemStats(&m)
	fmt.Printf("heap in use: %v\n", m.HeapInuse)
	fmt.Printf("heap alloc: %v\n", m.HeapAlloc)
	fmt.Printf("next GC: %v\n", m.NextGC)
	package main

	import (
	"encoding/json"
	"fmt"
	"reflect"
	"strings"
	)

	type Product struct {
	geoip_country /usr/share/GeoIP/GeoIP.dat;

	map $geoip_country_code $allowed_country {
	default no;
	US yes;
	}

	geo $inNet {
	default no;
	10.0.0.0/8 yes;
	# Get the charset of a table
	SELECT CCSA.character_set_name FROM information_schema.`TABLES` T,
	information_schema.`COLLATION_CHARACTER_SET_APPLICABILITY` CCSA
	WHERE CCSA.collation_name = T.table_collation
	AND T.table_schema = "schemaname"
	AND T.table_name = "tablename";

	# Get a bunch of details about a table including its collation
	SHOW TABLE STATUS IN dbname like 'tablename'
	var util = require('util'),
	fs =require('fs');

	// Print a nested object to the console for full inspection
	console.log(util.inspect(data, showHidden=false, depth=16, colorize=true));

	// Print a thing to a file
	fs.writeFile('debug.txt', aThing, function(err) {
	if (err) console.log('Write error for some reason!');
	});