eduardo aleixo eh-am

Making chained API Calls using @ngrx/Effects

Purpose

This recipe is useful for cooking up chained API calls as a result of a single action.

Description

In the below example, a single action called POST_REPO is dispatched and it's intention is to create a new repostiory on GitHub then update the README with new data after it is created.
For this to happen there are 4 API calls necessary to the GitHub API:

POST a new repostiry
GET the master branch of the new repository
GET the files on the master branch

Source : Learn to combine RxJs sequences with super intuitive interactive diagrams

Legend

Merge

Concat

Elm best practices

Style guide

Kubectl output options

Let's look at some basic kubectl output options.

Our intention is to list nodes (with their AWS InstanceId) and Pods (sorted by node).

We can start with:

kubectl get no

How to change your commit messages in Git?

At some point you’ll find yourself in a situation where you need edit a commit message. That commit might already be pushed or not, be the most recent or burried below 10 other commits, but fear not, git has your back 🙂.

Not pushed + most recent commit:

git commit --amend

This will open your $EDITOR and let you change the message. Continue with your usual git push origin master.

I have spent quite a bit of time figuring out automounts of NFS shares in OS X...

Somewhere along the line, Apple decided allowing mounts directly into /Volumes should not be possible:

/etc/auto_master (see last line):

#
# Automounter master map
#

+auto_master # Use directory service

-layer=$1
-get_regions () {
-  echo $(aws ssm get-parameters-by-path --region "us-east-1" --path /aws/service/global-infrastructure/services/lambda/regions --query 'Parameters[].Value' --output text | tr '[:blank:]' '\n' | grep -v -e ^cn- -e ^us-gov- | sort -r)
-}
-regions=$(get_regions)
-get_versions () {
-  echo $(aws lambda list-layer-versions --layer-name "$layer" --region "$region" --output text --query LayerVersions[].Version | tr '[:blank:]' '\n')
-}


	# Authorize read-write in the default namespace. Add this Role and the below RoleBinding to every namespace spinnaker deploys artifacts to
	apiVersion: rbac.authorization.k8s.io/v1
	kind: Role
	metadata:
	name: spinnaker-role
	namespace: default
	rules:
	- apiGroups: [""]
	resources: ["namespaces", "events", "replicationcontrollers", "serviceaccounts", "pods/logs"]

	node {
	echo 'Results included as an inline comment exactly how they are returned as of Jenkins 2.121, with $BUILD_NUMBER = 1'
	echo 'No quotes, pipeline command in single quotes'
	sh 'echo $BUILD_NUMBER' // 1
	echo 'Double quotes are silently dropped'
	sh 'echo "$BUILD_NUMBER"' // 1
	echo 'Even escaped with a single backslash they are dropped'
	sh 'echo \"$BUILD_NUMBER\"' // 1
	echo 'Using two backslashes, the quotes are preserved'
	sh 'echo \\"$BUILD_NUMBER\\"' // "1"

	#! /bin/bash
	# A bash script for an advanced setup of a Wacom on Linux :
	# with a grep, automatic parsing of the Wacom identifier, of the screen, of dpi and with a precision mode
	# ( drawing at 1:1 scale , the tablet / the screen ) .
	# Only the button layout remain custom to the model ( Intuos 3 in this example )
	# and can be easily adapted with other buttons ID.
	#
	# Dependencies: libwacom (xsetwacom), Bash and bc for the math, xrandr
	# optional: Gnome icon, notify-send
	# ( tested/created on Mint 17.2 Cinnamon, 11/2015 )