kenjij

# Generate private key with passphrase
openssl genrsa -des3 -out server.key 2048

# Private key without passpharase; UNDERSTAND THE RISK!
openssl rsa -in server.key -out server.key-nopass

# Generate CSR to submit to CA
openssl req -new -sha256 -key server.key -out server.csr

# Check/view CSR

kenjij

Slack Message Formatting Reference

Text Formatting

Basic Styles

Making a *bold statement.*
Emphasis with _italic text._
Let's ~strike out~ post this message.

kenjij

1.0.0 / Unreleased

Added

• Version followed by release date.
• Maintain "Unreleased" version in draft in preparation for release.
• "Added" section for new features added.
• MAJOR increment in semantic versioning would mean incompatible changes.

Changed

kenjij

redis-cli KEYS "Sidekiq:*:stat:processed:*" | xargs -n 100 redis-cli DEL

kenjij

# See: https://rvm.io/rvm/install

# Install public key
gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3

# Single-user install
\curl -sSL https://get.rvm.io | bash -s stable --ruby

# Multi-user install; after install, add users to "rvm" group
\curl -sSL https://get.rvm.io | sudo bash -s stable

jeshan

function getLambdaEventSource(event) {
    if (event.Records && event.Records[0].cf) return 'isCloudfront';

    if (event.configRuleId && event.configRuleName && event.configRuleArn) return 'isAwsConfig';

    if (event.Records && (event.Records[0].eventSource === 'aws:codecommit')) return 'isCodeCommit';

    if (event.authorizationToken === "incoming-client-token") return 'isApiGatewayAuthorizer';

    if (event.StackId && event.RequestType && event.ResourceType) return 'isCloudFormation';

kenjij

Google OAuth for Service Accounts/Firebase REST How-to

Firebase REST queries require access_token parameter for full access. This is Google’s OAuth 2.0 for service accounts.

• https://firebase.google.com/docs/reference/rest/database/user-auth
• https://developers.google.com/identity/protocols/OAuth2ServiceAccount

Get credentials of the service account

• Firebase Console > Settings > Project settings > Service accounts tab

kenjij

Slack OAuth for Bot App

1. Autorization

Open in a web browser: https://slack.com/oauth/authorize?scope=bot&client_id=12345.67890

• Use Client ID from App Credentials.
• Use bot for scope.

2. Authorization Code

kenjij

#
# Build and Package RubyGems for AWS Lambda Layer Use
#
all: build package

build:
	gem i firebase-ruby -Ni ruby/gems/2.5.0
	gem i darksky-ruby -Ni ruby/gems/2.5.0
	ls -m ruby/gems/2.5.0/gems

kenjij

{
  "version":2,
  "path":"/event",
  "httpMethod":"GET",
  "headers":{
    "Content-Length":"0",
    "Host":"abcde12345.execute-api.us-west-2.amazonaws.com",
    "User-Agent":"curl/7.54.0",
    "X-Amzn-Trace-Id":"Root=1-67891233-abcdef012345678912345678",
    "X-Forwarded-For":"192.168.1.23",