v0.1: The first version of backup script

.flake8

@@ -0,0 +1,4 @@
+[flake8]
+max-line-length = 90
+extend-ignore = E203, W503
+exclude = */migrations/*.py

.gitignore

@@ -0,0 +1,2 @@
+/.python-version
+.idea

.pre-commit-config.yaml

@@ -0,0 +1,39 @@
+exclude: 'docs|node_modules|migrations|.git|.tox'
+default_stages: [commit]
+fail_fast: true
+
+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.0.1
+    hooks:
+      - id: trailing-whitespace
+      - id: check-ast
+      - id: end-of-file-fixer
+      - id: check-yaml
+      - id: check-toml
+
+  - repo: https://github.com/psf/black
+    rev: 21.12b0
+    hooks:
+      - id: black
+
+  - repo: https://github.com/timothycrosley/isort
+    rev: 5.10.1
+    hooks:
+      - id: isort
+
+  - repo: https://github.com/kplaube/pre-commit-dodgy
+    rev: 0.0.2
+    hooks:
+      - id: dodgy
+
+  - repo: https://gitlab.com/pycqa/flake8
+    rev: 4.0.1
+    hooks:
+      - id: flake8
+
+  - repo: https://github.com/asottile/pyupgrade
+    rev: v2.31.0
+    hooks:
+      - id: pyupgrade
+        args: [--py310-plus]

Dockerfile.pg13

@@ -0,0 +1,32 @@
+FROM python:3.10-slim-bullseye
+
+ENV HOME=/home/app \
+    APP_HOME=/home/app/docker-postgres-backup \
+    \
+    # python
+    PYTHONPATH=${PYTHONPATH}:${PWD} \
+    PYTHONUNBUFFERED=1 \
+    PYTHONDONTWRITEBYTECODE=1 \
+    \
+    # pip
+    PIP_NO_CACHE_DIR=off \
+    PIP_DISABLE_PIP_VERSION_CHECK=on \
+    PIP_DEFAULT_TIMEOUT=100 \
+    \
+    # language locales
+    LANG=en_US.UTF-8 \
+    LANGUAGE=en_US:en \
+    LC_ALL=en_US.UTF-8
+
+RUN apt-get update && apt-get install -y --no-install-recommends locales postgresql-client-13 tini && \
+    apt-get -y --purge autoremove && apt-get clean && rm -rf /var/cache/apt && \
+    sed -i '/en_US.UTF-8/s/^# //g' /etc/locale.gen && locale-gen && pip install -U pip
+
+COPY ./ $APP_HOME
+WORKDIR $APP_HOME
+
+RUN python -m pip install $APP_HOME
+
+ENTRYPOINT ["tini", "--"]
+
+CMD ["python", "start.py"]

Dockerfile.pg14

@@ -0,0 +1,35 @@
+FROM python:3.10-slim-bullseye
+
+ENV HOME=/home/app \
+    APP_HOME=/home/app/docker-postgres-backup \
+    \
+    # python
+    PYTHONPATH=${PYTHONPATH}:${PWD} \
+    PYTHONUNBUFFERED=1 \
+    PYTHONDONTWRITEBYTECODE=1 \
+    \
+    # pip
+    PIP_NO_CACHE_DIR=off \
+    PIP_DISABLE_PIP_VERSION_CHECK=on \
+    PIP_DEFAULT_TIMEOUT=100 \
+    \
+    # language locales
+    LANG=en_US.UTF-8 \
+    LANGUAGE=en_US:en \
+    LC_ALL=en_US.UTF-8
+
+RUN apt-get update && apt-get install -y --no-install-recommends locales curl ca-certificates gnupg tini && \
+    curl https://www.postgresql.org/media/keys/ACCC4CF8.asc | gpg --dearmor | tee /etc/apt/trusted.gpg.d/apt.postgresql.org.gpg >/dev/null && \
+    sh -c 'echo "deb http://apt.postgresql.org/pub/repos/apt bullseye-pgdg main" > /etc/apt/sources.list.d/pgdg.list' && \
+    apt-get update && apt-get -y --no-install-recommends install postgresql-client-14 && \
+    apt-get -y --purge autoremove && apt-get clean && rm -rf /var/cache/apt && \
+    sed -i '/en_US.UTF-8/s/^# //g' /etc/locale.gen && locale-gen && pip install -U pip
+
+COPY ./ $APP_HOME
+WORKDIR $APP_HOME
+
+RUN python -m pip install $APP_HOME
+
+ENTRYPOINT ["tini", "--"]
+
+CMD ["python", "start.py"]

README.md

@@ -1,92 +1,31 @@
 # docker-postgres-backup
 
+This docker image provides functionality:
 
+1. Backup your PostgresSQL database to sql file using pg_dump
+2. Compress sql file using LZMA2
+3. Upload compressed file to S3 storage
+4. Scheduled to run every hour
 
-## Getting started
+# Versions
+You can use two versions:
+- PostgreSQL 13: `registry.gitlab.com/technocloud/docker-postgres-backup/docker-postgres-backup:pg13`
+- PostgreSQL 14: `registry.gitlab.com/technocloud/docker-postgres-backup/docker-postgres-backup:pg14`
 
-To make it easy for you to get started with GitLab, here's a list of recommended next steps.
+# SETTINGS
+You can set some envs vars:
+- DEBUG - run every 1 minute if 1, default is 0
+- DB_USER - user to connect DB, default is postgres
+- DB_PASSWORD - password to connect DB, default is postgres
+- DB_HOST - host to connect DB, default is localhost
+- DB_PORT - port to connect DB, default is 5432
+- DB_NAME - database to back up, default is postgres
+- TIME_ZONE - timezone for datetime using in filenames, default is Europe/Tallinn
+- COMPRESSION_LEVEL - level of LZMA compression, default is 7
 
-Already a pro? Just edit this README.md and make it your own. Want to make it easy? [Use the template at the bottom](#editing-this-readme)!
+Also, please define settings for S3 storage:
-
+- AWS_S3_REGION_NAME - default nl-ams
-## Add your files
+- AWS_S3_ENDPOINT_URL - default `https://s3.nl-ams.scw.cloud`
-
+- AWS_ACCESS_KEY_ID
-- [ ] [Create](https://docs.gitlab.com/ee/user/project/repository/web_editor.html#create-a-file) or [upload](https://docs.gitlab.com/ee/user/project/repository/web_editor.html#upload-a-file) files
+- AWS_SECRET_ACCESS_KEY
-- [ ] [Add files using the command line](https://docs.gitlab.com/ee/gitlab-basics/add-file.html#add-a-file-using-the-command-line) or push an existing Git repository with the following command:
+- AWS_BUCKET_NAME
-
-```
-cd existing_repo
-git remote add origin https://gitlab.com/technocloud/docker-postgres-backup.git
-git branch -M main
-git push -uf origin main
-```
-
-## Integrate with your tools
-
-- [ ] [Set up project integrations](https://gitlab.com/technocloud/docker-postgres-backup/-/settings/integrations)
-
-## Collaborate with your team
-
-- [ ] [Invite team members and collaborators](https://docs.gitlab.com/ee/user/project/members/)
-- [ ] [Create a new merge request](https://docs.gitlab.com/ee/user/project/merge_requests/creating_merge_requests.html)
-- [ ] [Automatically close issues from merge requests](https://docs.gitlab.com/ee/user/project/issues/managing_issues.html#closing-issues-automatically)
-- [ ] [Enable merge request approvals](https://docs.gitlab.com/ee/user/project/merge_requests/approvals/)
-- [ ] [Automatically merge when pipeline succeeds](https://docs.gitlab.com/ee/user/project/merge_requests/merge_when_pipeline_succeeds.html)
-
-## Test and Deploy
-
-Use the built-in continuous integration in GitLab.
-
-- [ ] [Get started with GitLab CI/CD](https://docs.gitlab.com/ee/ci/quick_start/index.html)
-- [ ] [Analyze your code for known vulnerabilities with Static Application Security Testing(SAST)](https://docs.gitlab.com/ee/user/application_security/sast/)
-- [ ] [Deploy to Kubernetes, Amazon EC2, or Amazon ECS using Auto Deploy](https://docs.gitlab.com/ee/topics/autodevops/requirements.html)
-- [ ] [Use pull-based deployments for improved Kubernetes management](https://docs.gitlab.com/ee/user/clusters/agent/)
-- [ ] [Set up protected environments](https://docs.gitlab.com/ee/ci/environments/protected_environments.html)
-
-***
-
-# Editing this README
-
-When you're ready to make this README your own, just edit this file and use the handy template below (or feel free to structure it however you want - this is just a starting point!).  Thank you to [makeareadme.com](https://www.makeareadme.com/) for this template.
-
-## Suggestions for a good README
-Every project is different, so consider which of these sections apply to yours. The sections used in the template are suggestions for most open source projects. Also keep in mind that while a README can be too long and detailed, too long is better than too short. If you think your README is too long, consider utilizing another form of documentation rather than cutting out information.
-
-## Name
-Choose a self-explaining name for your project.
-
-## Description
-Let people know what your project can do specifically. Provide context and add a link to any reference visitors might be unfamiliar with. A list of Features or a Background subsection can also be added here. If there are alternatives to your project, this is a good place to list differentiating factors.
-
-## Badges
-On some READMEs, you may see small images that convey metadata, such as whether or not all the tests are passing for the project. You can use Shields to add some to your README. Many services also have instructions for adding a badge.
-
-## Visuals
-Depending on what you are making, it can be a good idea to include screenshots or even a video (you'll frequently see GIFs rather than actual videos). Tools like ttygif can help, but check out Asciinema for a more sophisticated method.
-
-## Installation
-Within a particular ecosystem, there may be a common way of installing things, such as using Yarn, NuGet, or Homebrew. However, consider the possibility that whoever is reading your README is a novice and would like more guidance. Listing specific steps helps remove ambiguity and gets people to using your project as quickly as possible. If it only runs in a specific context like a particular programming language version or operating system or has dependencies that have to be installed manually, also add a Requirements subsection.
-
-## Usage
-Use examples liberally, and show the expected output if you can. It's helpful to have inline the smallest example of usage that you can demonstrate, while providing links to more sophisticated examples if they are too long to reasonably include in the README.
-
-## Support
-Tell people where they can go to for help. It can be any combination of an issue tracker, a chat room, an email address, etc.
-
-## Roadmap
-If you have ideas for releases in the future, it is a good idea to list them in the README.
-
-## Contributing
-State if you are open to contributions and what your requirements are for accepting them.
-
-For people who want to make changes to your project, it's helpful to have some documentation on how to get started. Perhaps there is a script that they should run or some environment variables that they need to set. Make these steps explicit. These instructions could also be useful to your future self.
-
-You can also document commands to lint the code or run tests. These steps help to ensure high code quality and reduce the likelihood that the changes inadvertently break something. Having instructions for running tests is especially helpful if it requires external setup, such as starting a Selenium server for testing in a browser.
-
-## Authors and acknowledgment
-Show your appreciation to those who have contributed to the project.
-
-## License
-For open source projects, say how it is licensed.
-
-## Project status
-If you have run out of energy or time for your project, put a note at the top of the README saying that development has slowed down or stopped completely. Someone may choose to fork your project or volunteer to step in as a maintainer or owner, allowing your project to keep going. You can also make an explicit request for maintainers.

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+    {file = "PyYAML-6.0-cp39-cp39-win32.whl", hash = "sha256:b5b9eccad747aabaaffbc6064800670f0c297e52c12754eb1d976c57e4f74dcb"},
+    {file = "PyYAML-6.0-cp39-cp39-win_amd64.whl", hash = "sha256:b3d267842bf12586ba6c734f89d1f5b871df0273157918b0ccefa29deb05c21c"},
+    {file = "PyYAML-6.0.tar.gz", hash = "sha256:68fb519c14306fec9720a2a5b45bc9f0c8d1b9c72adf45c37baedfcd949c35a2"},
+]
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+    {file = "s3transfer-0.5.1-py3-none-any.whl", hash = "sha256:25c140f5c66aa79e1ac60be50dcd45ddc59e83895f062a3aab263b870102911f"},
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+]
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+    {file = "schedule-1.1.0.tar.gz", hash = "sha256:e6ca13585e62c810e13a08682e0a6a8ad245372e376ba2b8679294f377dfc8e4"},
+]
+six = [
+    {file = "six-1.16.0-py2.py3-none-any.whl", hash = "sha256:8abb2f1d86890a2dfb989f9a77cfcfd3e47c2a354b01111771326f8aa26e0254"},
+    {file = "six-1.16.0.tar.gz", hash = "sha256:1e61c37477a1626458e36f7b1d82aa5c9b094fa4802892072e49de9c60c4c926"},
+]
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+    {file = "toml-0.10.2-py2.py3-none-any.whl", hash = "sha256:806143ae5bfb6a3c6e736a764057db0e6a0e05e338b5630894a5f779cabb4f9b"},
+    {file = "toml-0.10.2.tar.gz", hash = "sha256:b3bda1d108d5dd99f4a20d24d9c348e91c4db7ab1b749200bded2f839ccbe68f"},
+]
+urllib3 = [
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+    {file = "urllib3-1.26.8.tar.gz", hash = "sha256:0e7c33d9a63e7ddfcb86780aac87befc2fbddf46c58dbb487e0855f7ceec283c"},
+]
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+    {file = "virtualenv-20.13.1.tar.gz", hash = "sha256:e0621bcbf4160e4e1030f05065c8834b4e93f4fcc223255db2a823440aca9c14"},
+]

pyproject.toml

@@ -0,0 +1,28 @@
+[tool.poetry]
+name = "docker-postgres-backup"
+version = "0.1.0"
+description = ""
+authors = ["Eugene Morozov <e@morozov.ee>"]
+packages = [
+    { include = "README.md" },
+]
+
+[tool.poetry.dependencies]
+python = "^3.10"
+schedule = "^1.1.0"
+psycopg2-binary = "^2.9.3"
+boto3 = "^1.20.51"
+pytz = "^2021.3"
+
+[tool.poetry.dev-dependencies]
+pre-commit = "^2.17.0"
+
+[build-system]
+requires = ["poetry-core>=1.0.0"]
+build-backend = "poetry.core.masonry.api"
+
+[tool.black]
+line-length = 90
+
+[tool.isort]
+profile = "black"

start.py

@@ -0,0 +1,162 @@
+"""
+The script provides functionality:
+ 1. Backup your PostgresSQL database to sql file using pg_dump
+ 2. Compress sql file using LZMA2
+ 3. Upload compressed file to S3 storage
+ 4. Scheduled to run every hour
+
+You can set some envs vars:
+- DEBUG - run every 1 minute if 1, default is 0
+- DB_USER - user to connect DB, default is postgres
+- DB_PASSWORD - password to connect DB, default is postgres
+- DB_HOST - host to connect DB, default is localhost
+- DB_PORT - port to connect DB, default is 5432
+- DB_NAME - database to back up, default is postgres
+- TIME_ZONE - timezone for datetime using in filenames, default is Europe/Tallinn
+- COMPRESSION_LEVEL - level of LZMA compression, default is 7
+
+Settings for S3 storage:
+- AWS_S3_REGION_NAME - default nl-ams
+- AWS_S3_ENDPOINT_URL - default https://s3.nl-ams.scw.cloud
+- AWS_ACCESS_KEY_ID
+- AWS_SECRET_ACCESS_KEY
+- AWS_BUCKET_NAME
+"""
+
+import lzma
+import os
+import shutil
+import subprocess
+import threading
+import time
+from datetime import datetime
+
+import boto3
+import pytz
+import schedule
+from boto3.exceptions import S3UploadFailedError
+
+DEBUG = int(os.getenv("DEBUG", 0))
+DB_USER = os.getenv("DB_USER", "postgres")
+DB_PASSWORD = os.getenv("DB_PASSWORD", "postgres")
+DB_HOST = os.getenv("DB_HOST", "localhost")
+DB_PORT = os.getenv("DB_PORT", "5432")
+DB_NAME = os.getenv("DB_NAME", "postgres")
+TIME_ZONE = pytz.timezone(os.getenv("TIME_ZONE", "Europe/Tallinn"))
+AWS_S3_REGION_NAME = os.getenv("AWS_S3_REGION_NAME", "nl-ams")
+AWS_S3_ENDPOINT_URL = os.getenv("AWS_S3_ENDPOINT_URL", "https://s3.nl-ams.scw.cloud")
+AWS_ACCESS_KEY_ID = os.getenv("AWS_ACCESS_KEY_ID")
+AWS_SECRET_ACCESS_KEY = os.getenv("AWS_SECRET_ACCESS_KEY")
+AWS_BUCKET_NAME = os.getenv("AWS_BUCKET_NAME")
+COMPRESSION_SETTINGS = [
+    {
+        "id": lzma.FILTER_LZMA2,
+        "preset": int(os.getenv("COMPRESSION_LEVEL", 7)) | lzma.PRESET_EXTREME,
+    },
+]
+
+
+def backup_db_from_postgres(file_path: str) -> bool:
+    """
+    Backup db from PostgresSQL to file using pg_dump
+    :param file:
+    :return:
+    """
+    postgres_connection_url = (
+        f"postgresql://{DB_USER}:{DB_PASSWORD}@{DB_HOST}:{DB_PORT}/{DB_NAME}"
+    )
+    try:
+        process = subprocess.Popen(
+            [
+                "pg_dump",
+                f"--dbname={postgres_connection_url}",
+                "-f",
+                file_path,
+                "-Fp",
+            ],
+            stdout=subprocess.PIPE,
+        )
+        process.communicate()
+        if process.returncode != 0:
+            print(f"Command failed. Return code : {process.returncode}")
+            return False
+        return True
+    except (subprocess.SubprocessError, OSError) as exception:
+        print(exception)
+        return False
+
+
+def compress_file_to_xz(file_path: str) -> str:
+    compressed_file_path = f"{file_path}.xz"
+    with open(file_path, "rb") as origin_file:
+        with lzma.open(
+            compressed_file_path, "wb", filters=COMPRESSION_SETTINGS
+        ) as compressed_file:
+            shutil.copyfileobj(origin_file, compressed_file)
+    os.remove(file_path)
+    return compressed_file_path
+
+
+def upload_to_s3(compressed_file_path: str, filename: str) -> bool:
+    time_string = datetime.now(tz=TIME_ZONE).strftime("%Y/%m/%d")
+    destination_folder = f"{time_string}/{filename}"
+    try:
+        s3_client = boto3.client(
+            service_name="s3",
+            region_name=AWS_S3_REGION_NAME,
+            endpoint_url=AWS_S3_ENDPOINT_URL,
+            aws_access_key_id=AWS_ACCESS_KEY_ID,
+            aws_secret_access_key=AWS_SECRET_ACCESS_KEY,
+        )
+        s3_client.upload_file(
+            Filename=compressed_file_path,
+            Bucket=AWS_BUCKET_NAME,
+            Key=destination_folder,
+        )
+        os.remove(compressed_file_path)
+        return True
+    except S3UploadFailedError as exception:
+        print(exception)
+        return False
+
+
+def run_backup_database() -> None:
+    """
+    Run backup script
+    """
+    scheduled_time = datetime.now(tz=TIME_ZONE).strftime("%y%m%d-%H%M")
+    filename = f"{DB_NAME}-{scheduled_time}.sql"
+    sql_file_path = f"/tmp/{filename}"
+    backup_success = backup_db_from_postgres(file_path=sql_file_path)
+    if not backup_success:
+        print("Backup failed")
+        return
+    compressed_file_path = compress_file_to_xz(file_path=sql_file_path)
+    upload_success = upload_to_s3(compressed_file_path, f"{filename}.xz")
+    if not upload_success:
+        print("Upload failed")
+        return
+    upload_time = datetime.now(tz=TIME_ZONE).strftime("%Y-%m-%d %H:%M")
+    print(f"Made backup at {scheduled_time} and uploaded to S3 at {upload_time}")
+
+
+def run_threaded(job_func):
+    """
+    Run the jobs in threading
+    :param job_func:
+    :return:
+    """
+    job_thread = threading.Thread(target=job_func)
+    job_thread.start()
+
+
+if not DEBUG:
+    print("Setting up task launch 'run_backup_database' every hour")
+    schedule.every().hour.at(":05").do(run_threaded, run_backup_database)
+else:
+    print("Setting up task launch 'run_backup_database' every 5 minutes")
+    schedule.every(5).minutes.do(run_threaded, run_backup_database)
+
+while True:
+    schedule.run_pending()
+    time.sleep(1)