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List of Good PartyRock Apps

1. Architecture Threat modelling: https://partyrock.aws/u/testinguser883/R4PI1UIc2/Architecture-Threat-Modeler
2. Speaker Spotlight: https://partyrock.aws/u/ChloeMcA/8_LQK-Hqq/SpeakerSpotlight/snapshot/9nkN1GQr_

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# pip install awscurl
export COLLECTION_ID=j04odjdwa8f5xxxxxxxx
export OPENSEARCHHOST=`aws opensearchserverless batch-get-collection --ids ${COLLECTION_ID} | jq '.collectionDetails[] | .dashboardEndpoint'`

# Delete all indexes that follow a specific pattern
delete_old_indexes() {
  # TARGETDATE should look like YYYY.MM.DD where date is 1 month before now.
  export TARGETDATE=`date -d "-1 month" +"%Y.%m.%d"`
  export INDEXLIST=$(awscurl --service aoss  "${OPENSEARCHHOST}/_cat/indices" | grep ocsf | grep ${TARGETDATE} | awk '{print $1}')
  echo "${INDEXLIST}" | while read index; do awscurl --service aoss  -X DELETE "${OPENSEARCHHOST}/${index}"; done

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This is a customized snippet using Vega.

The original idea is from https://github.com/aws-solutions/centralized-logging-with-opensearch, but this is customised to consume OCSF logs injected into Security Lake

Some tips:

• To debug Vega scripts, you can use VEGA_DEBUG.view.data('rawData') into your browser console to retrieve the data in rawData (look at the beginning of the file above)
• Not sure how to programatically inject this code, but if you need to create this in your own dashboard, you can add a new visualization as Vega, and copy and paste the code above.

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how to fix browsing the internal network

MacOS issues with .local

In MacOS, you can do dig whatever.local and get some results if you have the entry in a local DNS (like pi-hole) but curl, or browsing will fail. This is because Apple enforces that .local domain is only discovered by the mDNS Bonjour service (more info)

To solve this, I decided to run the avahi-daemon in my local Raspberry-pi to publish additional services.

I decided to use the avahi-aliases project to simplify publishing more than one service on the same IP as the default avahi-daemon doesn't allow this at the moment

pcolazurdo

from datetime  import datetime, timedelta

# Every day of the week (starting from tomorrow) for the past 50 weeks 
now = datetime.now() + timedelta(days=1)
for i in range (50):
  delta = timedelta(days=7*i)
  print ('"{}"'.format((now-delta).strftime("%b %-d, %Y")))


# Every first Monday of the year

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# Assumes you are capturing the output of your golang app panic into /tmp/crash

# Reason of the panic
head -3 /tmp/crash

# Register status (22 may change in different architectures)
tail  -22 /tmp/crash

# Number of goroutines
cat /tmp/crash | grep goroutine | wc -l

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Userful Libraries/modules

1. OpenAPI toolkit common string formats: github.com/go-openapi/strfmt
2. Seamless printing to the terminal (stdout) and logging to a io.Writer (file) that’s as easy to use as fmt.Println: https://github.com/spf13/jwalterweatherman
3. Go package for dealing with maps, slices, JSON and other data: https://github.com/stretchr/objx
4. Efficient JSON beautifier and compactor for Go: https://github.com/tidwall/pretty
5. bbolt is a fork of Ben Johnson's Bolt key/value store: https://pkg.go.dev/go.etcd.io/bbolt
6. Formatters for units to human friendly sizes: github.com/dustin/go-humanize
7. Package httpsnoop provides an easy way to capture http related metrics (i.e. response time, bytes written, and http status code) from your application's http.Handlers: https://github.com/felixge/httpsnoop
8. Staticcheck - The advanced Go linter: https://github.com/dominikh/go-tools

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#!/bin/bash
TEMP_DIR=$(mktemp -d)
echo Output Directory: ${TEMP_DIR}


confirm() {
#
# syntax: confirm [<prompt>]
#
# Prompts the user to enter Yes or No and returns 0/1.

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var observer = new IntersectionObserver(function (entries) {
    // isIntersecting is true when element and viewport are overlapping
    // isIntersecting is false when element and viewport don't overlap
    if (entries[0].isIntersecting === true)
        console.log(entries[0].target.id);
}, { threshold: [0] });

// Observe all H2 headings and get their id printed into the console whenever they are in focus
document.querySelectorAll("h2").forEach(function (item) {
    observer.observe(document.querySelector("#" + item.id));

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# very basic but you can see the gist of it:

aws cloudformation list-types --type RESOURCE --visibility PUBLIC | \
  jq '.TypeSummaries[].TypeName' | \
  cut -d\" -f2 | \
  while read a
  do
    aws cloudcontrol list-resources --type-name  $a 2>/dev/null| \
    jq '.ResourceDescriptions[].Identifier'
  done