davidpelfree

#!/bin/bash

set -ex

# I am on server A
sshpass -e ssh -o PubkeyAuthentication=no -o StrictHostKeyChecking=no "${SSH_USERNAME}@${SERVER_B}" <<EOF
  # Now I am on server B
  export SSH_USERNAME=$SSH_USERNAME  # Copy env. variable from server A to server B
  export SERVER_C=$SERVER_C          # Copy env. variable from server A to server B
  export SSHPASS=$SSHPASS            # INSECURE!! copy env. variable from server A to server B

davidpelfree

package util;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public final class ActiveDirectoryUtils {

    private static final Pattern ERROR_CODE = Pattern.compile(".*LDAP: error code\\s([0-9]*).*data\\s([0-9a-f]{3,4}).*");

    public static final int USERNAME_NOT_FOUND = 0x525;

davidpelfree

package util;

import java.util.Arrays;
import java.util.function.Supplier;

public final class Util {

    /**
     * Retry to run a function a few times, retry if specific exceptions occur.
     *

davidpelfree

error() {
  local parent_lineno="$1"
  local message="$2"
  local code="${3:-1}"
  if [[ -n "$message" ]] ; then
    echo "Error on or near line ${parent_lineno}: ${message}; exiting with status ${code}"
  else
    echo "Error on or near line ${parent_lineno}; exiting with status ${code}"
  fi
  MIN_LINE=$(($parent_lineno - 5 > 0 ? $parent_lineno - 5 : 1))

davidpelfree

Interesting Links:

Web cache explained: 
  http://www.mnot.net/cache_docs/ 

RedBot - Cache control validation:
  http://redbot.org/

Dremel: Interactive Analysis of Web-Scale Datasets
  http://research.google.com/pubs/pub36632.html

davidpelfree

insert into counter_hourly(DataCenter,Env,HostName,CustomerID,Hour,TotalRequests,TotalLatency,TotalBytes) 
values 
  ('DC1','ENV2','NTC-CLFSTGAPP3','Lic_ID1','2012-8-23 10:00','11','2190','8822') 
on duplicate key update 
  `TotalRequests` = `TotalRequests` + '11' ,
  `TotalLatency` = `TotalLatency` + '2190' ,
  `TotalBytes` = `TotalBytes` + '8822'  
;

-- Here's the DDL used to create this table.

davidpelfree

List<String> values = []
int start, stop

// Quickly parse TSV line
while (true) {
    stop = line.indexOf('\t', start)
    if (stop < 0) break;
    values.push(line.substring(start, stop))
    start = stop + 1
}

davidpelfree

long contentLength = doc.getContentLength() // never mind where the long value comes from.

// Classify doc size. Notice that numbers in map's key have to be ordered (TreeMap) and last key should be Integer.MAX_VALUE:
// This is map of max length size value to a string describing this group
def docGroupMap = new TreeMap([2048:'0-2 KB', 5120:'2-5 KB', 10240:'5-10 KB', (Integer.MAX_VALUE): '10+ KB'])


// The find() method iterates the map and checks every key with the expression in its closure-parameter.
// Since TreeMap is used, the keys are ordered.
// Once the expression is true, the value is being assigned to the string.