feat(gatsby-source-sql): add new plugin to handle sql as a source

examples/using-gatsby-source-sql/.env.development

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+PATH_PREFIX=/
+
+DATAFILE1=./data/sqlite_markdown.sqlite3
+DATAFILE2=./data/Chinook_Sqlite.sqlite
+
+PG_HOST=
+PG_USERNAME=
+PG_PASSWORD=
+PG_DATABAS=

examples/using-gatsby-source-sql/.env.production

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+PATH_PREFIX=/using-gatsby-source-sql
+
+DATAFILE1=./data/sqlite_markdown.sqlite3
+DATAFILE2=./data/Chinook_Sqlite.sqlite
+
+PG_HOST=
+PG_USERNAME=
+PG_PASSWORD=
+PG_DATABAS=

examples/using-gatsby-source-sql/.gitignore

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+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (http://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# Typescript v1 declaration files
+typings/
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# dotenv environment variables file
+.env
+
+# gatsby files
+.cache/
+public
+
+# Mac files
+.DS_Store
+
+# Yarn
+yarn-error.log
+.pnp/
+.pnp.js
+# Yarn Integrity file
+.yarn-integrity
+
+# Local plugins
+plugins/
+
+# Python Virtual Env
+venv/

examples/using-gatsby-source-sql/.prettierrc

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+{
+  "semi": false,
+  "singleQuote": true,
+  "trailingComma": "es5"
+}

examples/using-gatsby-source-sql/LICENSE

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+The MIT License (MIT)
+
+Copyright (c) 2015 gatsbyjs
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+

examples/using-gatsby-source-sql/README.md

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+<p align="center">
+  <a href="https://www.gatsbyjs.org">
+    <img alt="Gatsby" src="https://www.gatsbyjs.org/monogram.svg" width="60" />
+  </a>
+</p>
+<h1 align="center">
+  Gatsby's SQL Source Example
+</h1>
+
+This is an example site built with an SQLite source.

examples/using-gatsby-source-sql/gatsby-browser.js

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+/**
+ * Implement Gatsby's Browser APIs in this file.
+ *
+ * See: https://www.gatsbyjs.org/docs/browser-apis/
+ */
+
+// You can delete this file if you're not using it

examples/using-gatsby-source-sql/gatsby-config.js

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+require(`dotenv`).config({
+  path: `.env.${process.env.NODE_ENV}`,
+})
+
+module.exports = {
+  pathPrefix: process.env.PATH_PREFIX,
+  siteMetadata: {
+    title: `Gatsby with a SQL source`,
+  },
+  plugins: [
+    `gatsby-plugin-react-helmet`,
+    {
+      resolve: `gatsby-source-sql`,
+      options: {
+        typeName: `Article`,
+        fieldName: `articles`,
+        dbEngine: {
+          client: `sqlite3`,
+          connection: {
+            filename: process.env.DATAFILE1,
+          },
+          useNullAsDefault: true,
+        },
+        queryChain: function(x) {
+          return x
+            .select(`id as article_id`, `title`, `slug`, `body`, `date`)
+            .from(`articles`)
+        },
+      },
+    },
+    {
+      resolve: `gatsby-source-sql`,
+      options: {
+        typeName: `Classical`,
+        fieldName: `chinook`,
+        dbEngine: {
+          client: `sqlite3`,
+          connection: {
+            filename: process.env.DATAFILE2,
+          },
+          useNullAsDefault: true,
+        },
+        queryChain: function(x) {
+          return x
+            .select(
+              `Track.TrackId as TrackId`,
+              `Track.Name as Track`,
+              `Album.Title as Album`,
+              `Genre.Name as Genre`,
+              `Artist.Name as Artist`
+            )
+            .from(`Track`)
+            .innerJoin(`Album`, `Album.AlbumId`, `Track.AlbumId`)
+            .innerJoin(`Artist`, `Artist.ArtistId`, `Album.ArtistId`)
+            .innerJoin(`Genre`, `Genre.GenreId`, `Track.GenreId`)
+            .where(`Genre.Name`, `=`, `Classical`)
+        },
+      },
+    },
+    {
+      resolve: `gatsby-source-filesystem`,
+      options: {
+        name: `images`,
+        path: `${__dirname}/src/images`,
+      },
+    },
+    `gatsby-transformer-sharp`,
+    `gatsby-transformer-remark`,
+    `gatsby-plugin-sharp`,
+    {
+      resolve: `gatsby-plugin-manifest`,
+      options: {
+        name: `gatsby-starter-default`,
+        short_name: `starter`,
+        start_url: `/`,
+        background_color: `#663399`,
+        theme_color: `#663399`,
+        display: `minimal-ui`,
+        icon: `src/images/gatsby-icon.png`, // This path is relative to the root of the site.
+      },
+    },
+    // this (optional) plugin enables Progressive Web App + Offline functionality
+    // To learn more, visit: https://gatsby.app/offline
+    // 'gatsby-plugin-offline',
+  ],
+}

examples/using-gatsby-source-sql/gatsby-node.js

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+/**
+ * Implement Gatsby's Node APIs in this file.
+ *
+ * See: https://www.gatsbyjs.org/docs/node-apis/
+ */
+
+// You can delete this file if you're not using it
+
+var unified = require(`unified`)
+var markdown = require(`remark-parse`)
+var html = require(`remark-html`)
+const path = require(`path`)
+
+exports.onCreateNode = async ({ node, actions }) => {
+  const { createNodeField } = actions
+  if (node.internal.type === `Article`) {
+    console.log(node.title)
+    await unified()
+      .use(markdown)
+      .use(html)
+      .process(node.body)
+      .then(res => {
+        createNodeField({
+          node,
+          name: `html`,
+          value: res.contents,
+        })
+      })
+  }
+}
+
+exports.createPages = ({ graphql, actions }) => {
+  // **Note:** The graphql function call returns a Promise
+  // see: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise for more info
+  const { createPage } = actions
+  return graphql(`
+    {
+      allArticle {
+        edges {
+          node {
+            slug
+          }
+        }
+      }
+    }
+  `).then(result => {
+    result.data.allArticle.edges.forEach(({ node }) => {
+      createPage({
+        path: node.slug,
+        component: path.resolve(`./src/templates/article.js`),
+        context: {
+          // Data passed to context is available
+          // in page queries as GraphQL variables.
+          slug: node.slug,
+        },
+      })
+    })
+  })
+}

examples/using-gatsby-source-sql/gatsby-ssr.js

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+/**
+ * Implement Gatsby's SSR (Server Side Rendering) APIs in this file.
+ *
+ * See: https://www.gatsbyjs.org/docs/ssr-apis/
+ */
+
+// You can delete this file if you're not using it

examples/using-gatsby-source-sql/lorem_markdown.py

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+import requests
+import sqlite3
+from random import randint
+import datetime
+
+url = 'https://jaspervdj.be/lorem-markdownum/markdown.txt'
+
+with sqlite3.connect('./data/sqlite_markdown.sqlite3') as conn:
+    cur = conn.cursor()
+    cur.execute('DROP TABLE IF EXISTS articles;')
+    cur.execute('''CREATE TABLE "articles" (
+        "id"	INTEGER NOT NULL UNIQUE,
+        "title"	TEXT,
+        "slug"	TEXT,
+        "body"	TEXT,
+        "date"	TEXT,
+        PRIMARY KEY("id")
+    );''')
+
+    insert_sql = '''INSERT INTO articles (
+        title,
+        slug,
+        body,
+        date
+    ) VALUES (?,?,?,?);'''
+
+    today = datetime.datetime.now()
+    startdate = today - datetime.timedelta(3)
+
+    for i in range(10):
+
+        response = requests.get(url, params={
+            'underline-headers': 'off',
+            'no-external-links': 'on',
+            'no-code': 'on'})
+
+        lines = response.text.splitlines()
+        title = lines[0][2:]
+        slug = title.replace(' ', '-').lower()
+        date = startdate + datetime.timedelta(randint(0, 7))
+        body = ' \n'.join(lines[1:])
+
+        cur.execute(insert_sql, (
+            title,
+            slug,
+            body,
+            date.strftime('%Y-%m-%d')))

examples/using-gatsby-source-sql/package.json

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+{
+  "name": "using-gatsby-source-sql",
+  "description": "Gatsby SQLite source example site",
+  "version": "1.0.0",
+  "author": "Edgar Ramírez-Mondragón <[email protected]>",
+  "dependencies": {
+    "dotenv": "^6.1.0",
+    "gatsby": "^2.0.19",
+    "gatsby-cli": "^2.4.5",
+    "gatsby-image": "^2.0.15",
+    "gatsby-plugin-manifest": "^2.0.5",
+    "gatsby-plugin-offline": "^2.0.11",
+    "gatsby-plugin-react-helmet": "^3.0.0",
+    "gatsby-plugin-sharp": "^2.0.7",
+    "gatsby-source-filesystem": "^2.0.4",
+    "gatsby-source-sql": "git+https://github.com/mrfunnyshoes/gatsby-source-sql.git",
+    "gatsby-transformer-remark": "^2.2.0",
+    "gatsby-transformer-sharp": "^2.1.4",
+    "react": "^16.5.1",
+    "react-dom": "^16.5.1",
+    "react-helmet": "^5.2.0",
+    "remark-html": "^9.0.0",
+    "sqlite3": "^4.0.4"
+  },
+  "keywords": [
+    "gatsby"
+  ],
+  "license": "MIT",
+  "scripts": {
+    "build": "gatsby build",
+    "develop": "gatsby develop",
+    "start": "npm run develop",
+    "format": "prettier --write \"src/**/*.js\"",
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "deploy": "gatsby build --prefix-paths && gh-pages -d public"
+  },
+  "devDependencies": {
+    "gh-pages": "^2.0.1",
+    "prettier": "^1.14.2"
+  }
+}

examples/using-gatsby-source-sql/requirements.txt

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+requests