SergeyAxenov

#!/usr/bin/env bash

string='/this is my string'
[[ $string =~ ^/(.*) ]] && string=${BASH_REMATCH[1]}
[[ $string =~ (.*)/$ ]] && string=${BASH_REMATCH[1]}
echo $string

SergeyAxenov

<!--
  ~ Configures additional virtual folder in Zeppelin web server 
  ~ to keep web assets for Zeppelin angular apps outside of 
  ~ Zeppelin installation folder (i.e. when it is in a container)
  ~ The main purpose is to take client side angular UI code out of 
  ~ zeppelin notebook and store it in normal html, js, css files
  -->

<?xml version="1.0" encoding="ISO-8859-1"?>
<!--

SergeyAxenov

Zeppelin 0.6.2. On angular watch initialization steps in client-first scenarious.

Zeppelin angular client-first

Zeppelin angular client-first is defined as an %angular paragraph with generated HTML output which is activated by an auto-run script:

<script>
changeValue($scope, value) {
	$scope.myValue=value
}
(function() {
	... 

SergeyAxenov

// Demonstrates usual z Angular bind/watch/change scenario (watch is working)
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
val logger: Logger = LoggerFactory.getLogger("MyZeppelinLogger");

logger.debug("START");
z.angularUnwatch("ax4_var")
z.angularUnbind("ax4_var")

logger.debug("Setting ax4_var=Init before watch");

SergeyAxenov

// Shows how to persist paragraph data between spark interpreter restarts using Zeppelin GUI params storage
// Run it once, then restart interpreter and run again. Parameter "ax4_gui_param" shuld be restored
val ctx = z.getInterpreterContext
val param = ctx.getGui.getParams().get("ax4_gui_param")
if (param == null) {
    s"Parameter is not persisted. Setting initial value"
    ctx.getGui.getParams().put("ax4_gui_param","hello_gui_param")
} else {
    s"Parameter is restored from Zeppelin GUI params collection: $param"
}

SergeyAxenov

// 1. Zeppelin InterpreterContext
// 2. How to get all angular objects registered in the note

z.angularBind("ax4_var","value")
val ctx = z.getInterpreterContext
ctx.getAngularObjectRegistry().getAllWithGlobal(ctx.getNoteId())
z.angularUnbind("ax4_var")
ctx.getAngularObjectRegistry().getAllWithGlobal(ctx.getNoteId())

// OUTPUT:

SergeyAxenov

// 1. Sequence of binding events on angular watch
// 2. nulls are accepted as both initial and new value
// 3. using the same value (even null) twice triggers the watch 
// 4. Multiple watchers on the same variable
// 5. Bug in watch (before, after) 
// 6. Use watch (before, after, context) - it is working as expected
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
val logger: Logger = LoggerFactory.getLogger("MyZeppelinLogger");

SergeyAxenov

// ================================================================
// Gist 
// Zeppelin Version 0.6.2
// Logging from zeppelin into a separate log file  
// ================================================================

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

val logger: Logger = LoggerFactory.getLogger("MyZeppelinLogger");

SergeyAxenov

# #powershell #ps #sql #smo #status #isOnline
Import-Module “sqlps” -DisableNameChecking

function SMO-IsServerOnline {
[CmdletBinding()]
[OutputType([boolean])]
Param(
	[string]$serverName
)
	$srv = new-object Microsoft.SqlServer.Management.Smo.Server($serverName)

SergeyAxenov

# #powershell #ps #msdeploy #runCommand
function MsDeploy-RunCmd(
	[string]$msdeployExe,
	[string]$svr,
	[string]$site,
	[string]$command) {

	$source="runcommand='$command'"
	$dest="auto,computername=`"https://$($svr):8172/msdeploy.axd?site=$site`",authtype=`"NTLM`""
	$cmd = $(" `"$msdeployExe`" -verb=sync -source={0} -dest={1} -allowuntrusted" -f  $source, $dest)