Add sqlalchemy migrations

MANIFEST.in

@@ -1 +1 @@
-include requirements.txt LICENSE.txt
+include requirements.txt LICENSE.txt sql/**/*

chainsyncer/db/migrations/sqlalchemy.py

@@ -0,0 +1,36 @@
+from alembic import op
+import sqlalchemy as sa
+
+def chainsyncer_upgrade(major, minor, patch):
+    r0_0_1_u()
+
+def chainsyncer_downgrade(major, minor, patch):
+    r0_0_1_d()
+
+def r0_0_1_u():
+    op.create_table(
+            'chain_sync',
+            sa.Column('id', sa.Integer, primary_key=True),
+            sa.Column('blockchain', sa.String, nullable=False, unique=True),
+            sa.Column('block_start', sa.Integer, nullable=False, default=0),
+            sa.Column('tx_start', sa.Integer, nullable=False, default=0),
+            sa.Column('block_cursor', sa.Integer, nullable=False, default=0),
+            sa.Column('tx_cursor', sa.Integer, nullable=False, default=0),
+            sa.Column('block_target', sa.Integer, nullable=True),
+            sa.Column('date_created', sa.DateTime, nullable=False),
+            sa.Column('date_updated', sa.DateTime),
+            )
+
+    op.create_table(
+            'chain_sync_filter',
+            sa.Column('id', sa.Integer, primary_key=True),
+            sa.Column('chain_sync_id', sa.Integer, sa.ForeignKey('chain_sync.id'), nullable=True),
+            sa.Column('flags', sa.BLOB, nullable=True),
+            sa.Column('flags_start', sa.BLOB, nullable=True),
+            sa.Column('count', sa.Integer, nullable=False, default=0),
+            sa.Column('digest', sa.BLOB, nullable=False),
+            )
+
+def r0_0_1_d():
+    op.drop_table('chain_sync_filter')
+    op.drop_table('chain_sync')

setup.cfg

@@ -21,13 +21,19 @@ licence_files =
 	LICENSE.txt
 
 [options]
+include_package_data = True
 python_requires = >= 3.6
 packages =
 	chainsyncer
 	chainsyncer.db
+	chainsyncer.db.migrations
 	chainsyncer.db.models
 	chainsyncer.runnable
 
+[options.package_data]
+* =
+	sql/*
+
 #[options.entry_points]
 #console_scripts =
 #	blocksync-celery = chainsyncer.runnable.tracker:main