Author Archives: bullgare

How to install multiple versions of go on mac m1

For instance, I want to try a new beta, go1.18beta2 (I check if it’s available on the download page). And I already have a regular go1.17, that I want to use as a default one. To do so, I need to do this:

go install golang.org/dl/go1.18beta2@latest
go1.18beta2 download

1 2	go install golang.org/dl/go1.18beta2@latest go1.18beta2 download

Then I can check if it’s okay — go1.18beta2 version #go …

Create SQS queues on localstack container start

Put this file to your filesystem as ←anyname.sh→:

#!/usr/bin/env bash

set -euo pipefail

# enable debug
# set -x


echo "configuring sqs"
echo "==================="
LOCALSTACK_HOST=localhost
AWS_REGION=eu-central-1


# https://docs.aws.amazon.com/cli/latest/reference/sqs/create-queue.html
create_queue() {
	local QUEUE_NAME_TO_CREATE=$1
	awslocal --endpoint-url=http://${LOCALSTACK_HOST}:4566 sqs create-queue --queue-name ${QUEUE_NAME_TO_CREATE} --region ${AWS_REGION} --attributes VisibilityTimeout=30
}

create_queue "queue2"
create_queue "queue1"

#!/usr/bin/env bash

set -euo pipefail

# enable debug

# set -x

echo "configuring sqs"

echo "==================="

LOCALSTACK_HOST=localhost

AWS_REGION=eu-central-1

# https://docs.aws.amazon.com/cli/latest/reference/sqs/create-queue.html

create_queue() {

local QUEUE_NAME_TO_CREATE=$1

awslocal --endpoint-url=http://${LOCALSTACK_HOST}:4566 sqs create-queue --queue-name ${QUEUE_NAME_TO_CREATE} --region ${AWS_REGION} --attributes VisibilityTimeout=30

}

create_queue "queue2"

create_queue "queue1"

For instance, ./localstack_bootstrap/sqs_bootstrap.sh. Don’t forget to run chmod +x ./localstack_bootstrap/sqs_bootstrap.sh. Add this line to your docker-compose.yml: — ./localstack_bootstrap:/docker-entrypoint-initaws.d/. So it could look like this:

services:
  localstack:
    container_name: aws_sqs
    hostname: sqs
    image: localstack/localstack:latest
    environment:
      - AWS_DEFAULT_REGION=ap-southeast-1
      - EDGE_PORT=4566
      - SERVICES=sqs
    ports:
      - '4566:4566'
    volumes:
      - "${TMPDIR:-/tmp/localstack}:/tmp/localstack"
      - "/var/run/docker.sock:/var/run/docker.sock"
      - ./localstack_bootstrap:/docker-entrypoint-initaws.d/

services:

localstack:

container_name: aws_sqs

hostname: sqs

image: localstack/localstack:latest

environment:

- AWS_DEFAULT_REGION=ap-southeast-1

- EDGE_PORT=4566

- SERVICES=sqs

ports:

- '4566:4566'

volumes:

- "${TMPDIR:-/tmp/localstack}:/tmp/localstack"

- "/var/run/docker.sock:/var/run/docker.sock"

- ./localstack_bootstrap:/docker-entrypoint-initaws.d/

Then your queues can be reached by URLs http://localhost:4566/000000000000/queue1 and http://localhost:4566/000000000000/queue2. Further reading: https://docs.aws.amazon.com/cli/latest/reference/sqs/create-queue.html https://joerg-pfruender.github.io/software/docker/microservices/testing/2020/01/25/Localstack_in_Docker.html

Postgresql index naming convention

Use the table name as the prefix. Use the following suffixes: _pkey for a Primary Key constraint _key for a Unique constraint _excl for an Exclusion constraint _idx for any other kind of index _fkey for a Foreign key _check for a Check constraint https://stackoverflow.com/a/4108266/801426 Also implicitly mentioned here — https://www.postgresql.org/docs/current/sql-altertable.html

Heroes 3 on MacOS with M1 Apple Silicon

Initial installation 1. You need Parallels Desktop with M1 support — https://www.parallels.com/ru/products/desktop/trial/ 2. Also you need an insider account on Microsoft web site to download win 11 for arm — https://insider.windows.com/ru-ru/ 3. Then you need to download Win 11 for arm — https://www.microsoft.com/en-us/software-download/windowsinsiderpreviewARM64 4. Download Heroes 3 Hota on the internet (many links are there). …

FreeCAD to generate gcode

You should switch Workbench to «Mesh Design», then select your shape in the left bar, and go to Menu→Meshes→Create Mesh from the shape. More details on parameters — https://www.xsim.info/articles/FreeCAD/en-US/HowTo/Create-surface-meshes-from-solids.html

DMDE to recover HDD disks

https://dmde.com/download.html

MGTS(GPON)+Keenetic and external access to Synology

Adding a comment to an article about using Keenetic router behind an MGTS(gpon) receiver to make Synology services like DS Audio/Video/Photo and so on to be available via Quickconnect feature by Synology. First of all, enable KeenDNS like shown below And then enable it on Synology Control Panel like this: And now on any device …

Useful links for proto generator development

https://rotemtam.com/2021/03/22/creating-a-protoc-plugin-to-gen-go-code/ https://medium.com/@tim.r.coulson/writing-a-protoc-plugin-with-google-golang-org-protobuf-cd5aa75f5777 https://github.com/nametake/protoc-gen-gohttp https://github.com/drekle/protoc-gen-goexample/blob/c60883c9711f3cfbd5191fd697651dbd067e6fdd/main.go#L135 https://github.com/grpc-ecosystem/grpc-gateway/blob/24434e22fb9734f1a62c81c4ea246125d7844645/examples/internal/proto/examplepb/echo_service_grpc.pb.go https://pkg.go.dev/google.golang.org/protobuf/compiler/protogen#Options.Run https://github.com/lyft/protoc-gen-star https://go.dev/blog/protobuf-apiv2 https://docs.buf.build/build/usage/#configuration https://github.com/grpc-ecosystem/grpc-gateway https://github.com/googleapis/googleapis/tree/master/google/api https://github.com/bufbuild/buf https://stackoverflow.com/questions/36540427/cannot-find-package-google-protobuf https://pkg.go.dev/google.golang.org/protobuf https://developers.google.com/protocol-buffers/docs/reference/go-generated#package https://stackoverflow.com/questions/61666805/correct-format-of-protoc-go-package https://grpc.io/docs/languages/go/quickstart/ https://github.com/protocolbuffers/protobuf/tree/master/src/google/protobuf https://github.com/gogo/protobuf/blob/b03c65ea87cdc3521ede29f62fe3ce239267c1bc/protobuf/google/protobuf/descriptor.proto

Go study

A list of resources for learning golang https://github.com/ardanlabs/gotraining/tree/master/reading

Set github actions for you repo

If you want to run tests/linters against you golang project, place something like the example below in .github/workflows/somename.yml to your project:

name: ci-cd

on:
  push:
    branches:
      - '**'

env:
  GONOSUMDB: "github.com/<your-organization>"
  GOPRIVATE: "github.com/<your-organization>"
jobs:
  ci-cd:
    strategy:
      matrix:
        go-version: [ 1.16.x ]
    runs-on: ubuntu-latest
    steps:
      - name: Install Go
        uses: actions/setup-go@v2
        with:
          go-version: ${{ matrix.go-version }}
      - name: Write .netrc for private go modules
        env:
          NETRC_USER: ${{ secrets.NETRC_USER }}
          NETRC_PASS: ${{ secrets.NETRC_PASS }}
        run: echo "machine github.com login ${{ secrets.NETRC_USER }} password ${{ secrets.NETRC_PASS }}" > $HOME/.netrc
      - name: Checkout the code
        uses: actions/checkout@master
        with:
          fetch-depth: 1
      - name: Run Makefile::ci-cd-check
        run: make ci-cd-check

name: ci-cd

on:

push:

branches:

- '**'

env:

GONOSUMDB: "github.com/<your-organization>"

GOPRIVATE: "github.com/<your-organization>"

jobs:

ci-cd:

strategy:

matrix:

go-version: [ 1.16.x ]

runs-on: ubuntu-latest

steps:

- name: Install Go

uses: actions/setup-go@v2

with:

go-version: ${{ matrix.go-version }}

- name: Write .netrc for private go modules

env:

NETRC_USER: ${{ secrets.NETRC_USER }}

NETRC_PASS: ${{ secrets.NETRC_PASS }}

run: echo "machine github.com login ${{ secrets.NETRC_USER }} password ${{ secrets.NETRC_PASS }}" > $HOME/.netrc

- name: Checkout the code

uses: actions/checkout@master

with:

fetch-depth: 1

- name: Run Makefile::ci-cd-check

run: make ci-cd-check

Good article on that — https://github.com/mvdan/github-actions-golang