{
  "cells": [
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "view-in-github",
        "colab_type": "text"
      },
      "source": [
        "<a href=\"https://colab.research.google.com/gist/vrtmrz/37c3efd7842e49947aaaa7f665e5020a/deploy_couchdb_to_flyio_v2_with_swap.ipynb\" target=\"_parent\"><img src=\"https://colab.research.google.com/assets/colab-badge.svg\" alt=\"Open In Colab\"/></a>"
      ]
    },
    {
      "cell_type": "markdown",
      "source": [
        "History:\n",
        "- 18, May, 2023: Initial.\n",
        "- 19, Jun., 2023: Patched for enabling swap.\n",
        "- 22, Aug., 2023: Generating Setup-URI implemented."
      ],
      "metadata": {
        "id": "HiRV7G8Gk1Rs"
      }
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {
        "id": "2Vh0mEQEZuAK"
      },
      "outputs": [],
      "source": [
        "# Configurations\n",
        "import os\n",
        "os.environ['region']=\"nrt\"\n",
        "os.environ['couchUser']=\"alkcsa93\"\n",
        "os.environ['couchPwd']=\"c349usdfnv48fsasd\""
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {
        "id": "SPmbB0jZauQ1"
      },
      "outputs": [],
      "source": [
        "# Delete once\n",
        "!rm ./fly.toml"
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {
        "id": "Nze7QoxLZ7Yx"
      },
      "outputs": [],
      "source": [
        "# Installation\n",
        "# You have to set up your account in here.\n",
        "!curl -L https://fly.io/install.sh | sh\n",
        "!/root/.fly/bin/flyctl auth signup"
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {
        "id": "MVJwsIYrbgtx"
      },
      "outputs": [],
      "source": [
        "# Generate server\n",
        "!/root/.fly/bin/flyctl launch  --auto-confirm --generate-name --detach --no-deploy --region ${region}\n",
        "!/root/.fly/bin/fly volumes create --region ${region} couchdata --size 2 --yes"
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "# Check the toml once.\n",
        "!cat fly.toml"
      ],
      "metadata": {
        "id": "2RSoO9o-i2TT"
      },
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {
        "id": "zUtPZLVnbvdQ"
      },
      "outputs": [],
      "source": [
        "# Modify fly.toml\n",
        "## Port modification\n",
        "!sed -i 's/8080/5984/g'  fly.toml\n",
        "## Add user into.\n",
        "!echo -e \"\\n[env]\\n  COUCHDB_USER = \\\"${couchUser}\\\"\" >> ./fly.toml\n",
        "## Set the location of an ini file which to save configurations persistently via erlang flags.\n",
        "!echo -e \"\\nERL_FLAGS=\\\"-couch_ini /opt/couchdb/etc/default.ini /opt/couchdb/etc/default.d/ /opt/couchdb/etc/local.d /opt/couchdb/etc/local.ini /opt/couchdb/data/persistence.ini\\\"\" >> ./fly.toml\n",
        "## Mounting volumes to store data and ini file.\n",
        "!echo -e \"\\n[mounts]\\n  source=\\\"couchdata\\\"\\n  destination=\\\"/opt/couchdb/data\\\"\" >> ./fly.toml\n",
        "!cat fly.toml"
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "# Make the Dockerfile to modify the permission of the ini file. If you want to use a specific version,  you should change `latest` here.\n",
        "!echo -e \"\\n[build]\\n  dockerfile = \\\"./Dockerfile\\\"\" >> ./fly.toml"
      ],
      "metadata": {
        "id": "LQPsZ_dYxkTu"
      },
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "code",
      "source": [
        "!echo -e \"FROM couchdb:latest\\nRUN sed -i '2itouch /opt/couchdb/data/persistence.ini && chmod +w /opt/couchdb/data/persistence.ini && fallocate -l 512M /swapfile && chmod 0600 /swapfile && mkswap /swapfile && echo 10 > /proc/sys/vm/swappiness && swapon /swapfile && echo 1 > /proc/sys/vm/overcommit_memory' /docker-entrypoint.sh\" > ./Dockerfile"
      ],
      "metadata": {
        "id": "44cBeGJ9on5i"
      },
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "code",
      "source": [
        "# Check dockerfile\n",
        "!cat ./Dockerfile"
      ],
      "metadata": {
        "id": "ai2R3BbpxRSe"
      },
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {
        "id": "xWdsTCI6bzk2"
      },
      "outputs": [],
      "source": [
        "# Configure password\n",
        "!/root/.fly/bin/flyctl secrets set COUCHDB_PASSWORD=${couchPwd}"
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {
        "id": "k0WIQlShcXGa"
      },
      "outputs": [],
      "source": [
        "# Deploy server\n",
        "# Be sure to shutdown after the test.\n",
        "!/root/.fly/bin/flyctl deploy --detach --remote-only\n",
        "!/root/.fly/bin/flyctl status"
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {
        "id": "0ySggkdlfq7M"
      },
      "outputs": [],
      "source": [
        "import subprocess, json\n",
        "result = subprocess.run([\"/root/.fly/bin/flyctl\",\"status\",\"-j\"], capture_output=True, text=True)\n",
        "if result.returncode==0:\n",
        "    hostname = json.loads(result.stdout)[\"Hostname\"]\n",
        "    os.environ['couchHost']=\"https://%s\" % (hostname)\n",
        "    print(\"Your couchDB server is https://%s/\" % (hostname))\n",
        "else:\n",
        "    print(\"Something occured.\")\n"
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "# Finish setting up the CouchDB\n",
        "# Please repeat until the request is  completed without error messages\n",
        "# i.e., You have to redo this block while \"curl: (35) OpenSSL SSL_connect: Connection reset by peer in connection to xxxx\" is showing.\n",
        "!curl -X POST \"${couchHost}/_cluster_setup\" -H \"Content-Type: application/json\" -d \"{\\\"action\\\":\\\"enable_single_node\\\",\\\"username\\\":\\\"${couchUser}\\\",\\\"password\\\":\\\"${couchPwd}\\\",\\\"bind_address\\\":\\\"0.0.0.0\\\",\\\"port\\\":5984,\\\"singlenode\\\":true}\"  --user \"${couchUser}:${couchPwd}\""
      ],
      "metadata": {
        "id": "cGlSzVqlQG_z"
      },
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "code",
      "source": [
        "# Please repeat until all lines are completed without error messages\n",
        "!curl -X PUT \"${couchHost}/_node/nonode@nohost/_config/chttpd/require_valid_user\" -H \"Content-Type: application/json\" -d '\"true\"' --user \"${couchUser}:${couchPwd}\"\n",
        "!curl -X PUT \"${couchHost}/_node/nonode@nohost/_config/chttpd_auth/require_valid_user\" -H \"Content-Type: application/json\" -d '\"true\"' --user \"${couchUser}:${couchPwd}\"\n",
        "!curl -X PUT \"${couchHost}/_node/nonode@nohost/_config/httpd/WWW-Authenticate\" -H \"Content-Type: application/json\" -d '\"Basic realm=\\\"couchdb\\\"\"' --user \"${couchUser}:${couchPwd}\"\n",
        "!curl -X PUT \"${couchHost}/_node/nonode@nohost/_config/httpd/enable_cors\" -H \"Content-Type: application/json\" -d '\"true\"' --user \"${couchUser}:${couchPwd}\"\n",
        "!curl -X PUT \"${couchHost}/_node/nonode@nohost/_config/chttpd/enable_cors\" -H \"Content-Type: application/json\" -d '\"true\"' --user \"${couchUser}:${couchPwd}\"\n",
        "!curl -X PUT \"${couchHost}/_node/nonode@nohost/_config/chttpd/max_http_request_size\" -H \"Content-Type: application/json\" -d '\"4294967296\"' --user \"${couchUser}:${couchPwd}\"\n",
        "!curl -X PUT \"${couchHost}/_node/nonode@nohost/_config/couchdb/max_document_size\" -H \"Content-Type: application/json\" -d '\"50000000\"' --user \"${couchUser}:${couchPwd}\"\n",
        "!curl -X PUT \"${couchHost}/_node/nonode@nohost/_config/cors/credentials\" -H \"Content-Type: application/json\" -d '\"true\"' --user \"${couchUser}:${couchPwd}\"\n",
        "!curl -X PUT \"${couchHost}/_node/nonode@nohost/_config/cors/origins\" -H \"Content-Type: application/json\" -d '\"app://obsidian.md,capacitor://localhost,http://localhost\"' --user \"${couchUser}:${couchPwd}\""
      ],
      "metadata": {
        "id": "JePzrsHypY18"
      },
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "markdown",
      "source": [
        "Now, our CouchDB has been surely installed and configured. Cheers!\n",
        "\n",
        "In the steps that follow, create a setup-URI.\n",
        "\n",
        "This URI could be imported directly into Self-hosted LiveSync, to configure the use of the CouchDB which we configured now."
      ],
      "metadata": {
        "id": "YfSOomsoXbGS"
      }
    },
    {
      "cell_type": "code",
      "source": [
        "# Database config\n",
        "import random, string\n",
        "\n",
        "def randomname(n):\n",
        "   return ''.join(random.choices(string.ascii_letters + string.digits, k=n))\n",
        "\n",
        "# The database name\n",
        "os.environ['database']=\"obsidiannote\"\n",
        "# The passphrase to E2EE\n",
        "os.environ['passphrase']=randomname(20)\n",
        "\n",
        "print(\"Your database:\"+os.environ['database'])\n",
        "print(\"Your passphrase:\"+os.environ['passphrase'])"
      ],
      "metadata": {
        "id": "416YncOqXdNn"
      },
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "code",
      "source": [
        "# Install deno for make setup uri\n",
        "!curl -fsSL https://deno.land/x/install/install.sh | sh"
      ],
      "metadata": {
        "id": "C4d7C0HAXgsr"
      },
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "code",
      "source": [
        "# Fetch module for encrypting a Setup URI\n",
        "!curl -o encrypt.ts https://gist.githubusercontent.com/vrtmrz/f9d1d95ee2ca3afa1a924a2c6759b854/raw/d7a070d864a6f61403d8dc74208238d5741aeb5a/encrypt.ts"
      ],
      "metadata": {
        "id": "hQL_Dx-PXise"
      },
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "code",
      "source": [
        "# Make buttons!\n",
        "from IPython.display import HTML\n",
        "result = subprocess.run([\"/root/.deno/bin/deno\",\"run\",\"-A\",\"encrypt.ts\"], capture_output=True, text=True)\n",
        "text=\"\"\n",
        "if result.returncode==0:\n",
        "  text = result.stdout.strip()\n",
        "  result = HTML(f\"<button onclick=navigator.clipboard.writeText('{text}')>Copy setup uri</button><br>Importing passphrase is `welcome`. <br>If you want to synchronise in live mode, please apply a preset after setup.)\")\n",
        "else:\n",
        "  result = \"Failed to encrypt the setup URI\"\n",
        "result"
      ],
      "metadata": {
        "id": "o0gX_thFXlIZ"
      },
      "execution_count": null,
      "outputs": []
    }
  ],
  "metadata": {
    "colab": {
      "provenance": [],
      "private_outputs": true,
      "include_colab_link": true
    },
    "kernelspec": {
      "display_name": "Python 3",
      "name": "python3"
    },
    "language_info": {
      "name": "python"
    },
    "gpuClass": "standard"
  },
  "nbformat": 4,
  "nbformat_minor": 0
}