Started work on cli, which also meant adding setup.py

I'm using click, and click recommends using a setup.py - so I've added one of
those. I also refactored code into a new datasite package. It's not quite
deploying to now properly at the moment though - I seem to have messed up the
path handling a bit.

Also snuck in a new template for the "Row" view.

Refs #40

Dockerfile

@@ -1,7 +1,7 @@
 FROM python:3
 COPY . /app
 WORKDIR /app
-RUN pip install -r requirements.txt
+RUN pip install .
-RUN python app.py --build
+RUN datasite build
 EXPOSE 8006
-CMD ["python", "app.py"]
+CMD ["datasite", "serve", "--port", "8006"]

datasite/app.py

@@ -3,6 +3,8 @@ from sanic import response
 from sanic.exceptions import NotFound
 from sanic.views import HTTPMethodView
 from sanic_jinja2 import SanicJinja2
+from jinja2 import FileSystemLoader
+import click
 import sqlite3
 from contextlib import contextmanager
 from pathlib import Path
@@ -14,7 +16,7 @@ import hashlib
 import sys
 import time
 
-app_root = Path(__file__).parent
+app_root = Path(__file__).parent.parent
 
 BUILD_METADATA = 'build-metadata.json'
 DB_GLOBS = ('*.db', '*.sqlite', '*.sqlite3')
@@ -25,7 +27,12 @@ conns = {}
 
 
 app = Sanic(__name__)
-jinja = SanicJinja2(app)
+jinja = SanicJinja2(
+    app,
+    loader=FileSystemLoader([
+        str(app_root / 'datasite' / 'templates')
+    ])
+)
 
 
 def get_conn(name):
@@ -43,10 +50,12 @@ def get_conn(name):
 def ensure_build_metadata(regenerate=False):
     build_metadata = app_root / BUILD_METADATA
     if build_metadata.exists() and not regenerate:
-        json.loads(build_metadata.read_text())
+        return json.loads(build_metadata.read_text())
+    print('Building metadata... path={}'.format(build_metadata))
     metadata = {}
     for glob in DB_GLOBS:
         for path in app_root.glob(glob):
+            print('  globbing, path={}'.format(path))
             name = path.stem
             if name in metadata:
                 raise Exception('Multiple files with same stem %s' % name)
@@ -154,7 +163,7 @@ class BaseView(HTTPMethodView):
 @app.route('/')
 async def index(request, sql=None):
     databases = []
-    for key, info in ensure_build_metadata(True).items():
+    for key, info in ensure_build_metadata().items():
         database = {
             'name': key,
             'hash': info['hash'],
@@ -246,7 +255,7 @@ class TableView(BaseView):
 
 
 class RowView(BaseView):
-    template = 'table.html'
+    template = 'row.html'
 
     def data(self, request, name, hash, table, pk_path):
         conn = get_conn(name)
@@ -409,10 +418,3 @@ def sqlite_timelimit(conn, ms):
     conn.set_progress_handler(handler, 10000)
     yield
     conn.set_progress_handler(None, 10000)
-
-
-if __name__ == '__main__':
-    if '--build' in sys.argv:
-        ensure_build_metadata(True)
-    else:
-        app.run(host="0.0.0.0", port=8006)

datasite/cli.py

@@ -0,0 +1,24 @@
+import click
+from .app import app, ensure_build_metadata
+
+@click.group()
+def cli():
+    """
+    Datasite!
+    """
+
+
+@cli.command()
+def build():
+    ensure_build_metadata(True)
+
+
+@cli.command()
+@click.argument('files', type=click.Path(exists=True), nargs=-1)
+@click.option('-h', '--host', default='0.0.0.0')
+@click.option('-p', '--port', default=8001)
+@click.option('--debug', is_flag=True)
+def serve(files, host, port, debug):
+    '''Serve up specified database files with a web UI'''
+    click.echo('Serve! files={} on port {}'.format(files, port))
+    app.run(host=host, port=port, debug=debug)

datasite/templates/row.html

@@ -0,0 +1,35 @@
+{% extends "base.html" %}
+
+{% block title %}{{ database }}: {{ table }}{% endblock %}
+
+{% block content %}
+<h1><a href="/{{ database }}-{{ database_hash }}">{{ database }}</a></h1>
+
+<h2><a href="/{{ database }}-{{ database_hash }}/{{ table }}">{{ table }}</a></h2>
+
+<style>
+td {
+    white-space: pre;
+    vertical-align: top;
+    border-top: 1px solid #666;
+    padding: 2px 4px;
+}
+</style>
+<table>
+    <tr>
+        {% if primary_keys and row_link %}<th scope="col">Link</th>{% endif %}
+        {% for column in columns %}<th scope="col">{{ column }}</th>{% endfor %}
+    </tr>
+    {% for row in rows %}
+        <tr>
+            {% if primary_keys and row_link %}
+                <td><a href="/{{ database }}-{{ database_hash }}/{{ table }}/{{ row_link(row) }}">{{ row_link(row) }}</a></td>
+            {% endif %}
+            {% for td in row %}
+                <td>{{ td }}</td>
+            {% endfor %}
+        </tr>
+    {% endfor %}
+</table>
+{% if took_ms %}<small>Took {{ took_ms }}</small>{% endif %}
+{% endblock %}

setup.py

@@ -0,0 +1,18 @@
+from setuptools import setup, find_packages
+
+setup(
+    name='datasite',
+    version='0.1',
+    packages=find_packages(),
+    package_data={'datasite': ['templates/*.html']},
+    include_package_data=True,
+    install_requires=[
+        'click==6.7',
+        'sanic==0.6.0',
+        'sanic-jinja2==0.5.5',
+    ],
+    entry_points='''
+        [console_scripts]
+        datasite=datasite.cli:cli
+    ''',
+)