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Łukasz Korecki lukaszkorecki

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lukaszkorecki / intro.md
Created October 20, 2023 20:33
next.jdbc query debugging with Portal
View intro.md

Intro

Portal has a ton of useful formatters and because it leverages Hiccup, it's really easy to build on top of it. I wrote a tiny toolkit for debugging:

  • queries generated by HoneySQL
  • dealing with invalid query exceptions thrown by Postgres

For small queries it's easy to figure out where the error is, but with multiple CTEs, conditionally building parts of the query, things get messy.

@lukaszkorecki
lukaszkorecki / Dockerfile
Created February 17, 2021 17:04
AWS Lambda + babashka + minimal container image
View Dockerfile
FROM alpine:3.11.3
RUN apk update && apk add curl ca-certificates unzip && rm -rf /var/cache/apk/*
RUN curl -L 'https://github.com/babashka/babashka/releases/download/v0.2.10/babashka-0.2.10-linux-static-amd64.zip' -o /tmp/bb.zip && \
unzip /tmp/bb.zip && \
mv bb /usr/bin/bb && \
chmod +x /usr/bin/bb
RUN mkdir -p /app
View start-jar
#!/usr/bin/env bash
set -oe pipefail
jarPath=$1
# inspired by metabase
# Disable limit to amount of time spent in GC. Better slow than not working at all
JAVA_OPTS="$JAVA_OPTS -XX:-UseGCOverheadLimit"
JAVA_OPTS="$JAVA_OPTS -XX:+UseConcMarkSweepGC"
View graleph error.txt
# - ubuntu : cd tmp/graleph/
# master - graleph : make run
docker run --net host --rm -it graleph:latest
date=2020-06-12 00:22:16,451 level=INFO thread=main ns=graleph.core message=starting
date=2020-06-12 00:22:16,523 level=INFO thread=clojure-agent-send-off-pool-0 ns=graleph.core message=[]
Exception in thread "main" java.lang.IllegalArgumentException: Class NioDatagramChannel does not have a public non-arg constructor
at io.netty.channel.ReflectiveChannelFactory.<init>(ReflectiveChannelFactory.java:36)
at io.netty.bootstrap.AbstractBootstrap.channel(AbstractBootstrap.java:110)
at aleph.udp$socket.invokeStatic(udp.clj:51)
at graleph.core$start.invokeStatic(core.clj:21)
View Makefile
.ONESHELL:
test: .SHELLFLAGS := -i
test: SHELL := bb
test:
(println :wow)
(require '[clojure.string :as s])
(s/reverse (slurp "./Makefile"))
View ex.tf
variable "env_map" {
default = {
PG_HOST = "some.host.internal"
SOME_SECRET = "pineapples are 1337"
}
}
variable "port" {
default = 1234
View service.tf
module "something" {
source = "./modules/service_v1"
name = "bananas"
image = "repo/image:tag"
network_mode = "host"
environment = {
PORT = 3032,
PG_HOST = module.pg.fqdn,
SOME_SECRET = module.secrets["some_sekrit"].value,
}
View container.yml
- name: Something
docker_container:
name: bananas
image: repo/image:tag
network_mode: host
environment:
PORT: 3032
PG_HOST: pg.internal
SOME_SECRET: "{{ sekrit_var }}"
View iffff.clj
(if thing
thing-if-true
(when otherwise-thing
one-more-thing-if-true))
View rec.clj
user=> (defrecord Foo [foo bar])
user.Foo
user=> (def f (->Foo :foo :bar))
#'user/f
user=> (defrecord Qux [foo bar baz])
user.Qux
user=> (def q (map->Qux (select-keys f [:foo :bar])))
#'user/q
user=> (clojure.pprint/pprint q)
{:foo :foo, :bar :bar, :baz nil}