Support table prefix for sql reporter

In some environments zuul operators may have to rely on external
database providers. In this case it can be cumbersome to get extra
databases for each test environment. Adding an optional prefix to the
table names makes it possible to gracefully run several zuul
deployments against the same database and ensure they're still
isolated against each other.

Change-Id: Ib9948d6d74f4dc2453738f5d441e233e39e7f944

zuul/driver/sql/alembic/versions/1dd914d4a482_allow_score_to_be_null.py

@@ -16,8 +16,8 @@ from alembic import op
 import sqlalchemy as sa
 
 
-def upgrade():
-    op.alter_column('zuul_buildset', 'score', nullable=True,
+def upgrade(table_prefix=''):
+    op.alter_column(table_prefix + 'zuul_buildset', 'score', nullable=True,
                     existing_type=sa.Integer)
 
 

zuul/driver/sql/alembic/versions/20126015a87d_add_indexes.py

@@ -32,24 +32,28 @@ BUILDSET_TABLE = 'zuul_buildset'
 BUILD_TABLE = 'zuul_build'
 
 
-def upgrade():
+def upgrade(table_prefix=''):
+    prefixed_buildset = table_prefix + BUILDSET_TABLE
+    prefixed_build = table_prefix + BUILD_TABLE
+
     # To allow a dashboard to show a per-project view, optionally filtered
     # by pipeline.
     op.create_index(
-        'project_pipeline_idx', BUILDSET_TABLE, ['project', 'pipeline'])
+        'project_pipeline_idx', prefixed_buildset, ['project', 'pipeline'])
 
     # To allow a dashboard to show a per-project-change view
     op.create_index(
-        'project_change_idx', BUILDSET_TABLE, ['project', 'change'])
+        'project_change_idx', prefixed_buildset, ['project', 'change'])
 
     # To allow a dashboard to show a per-change view
-    op.create_index('change_idx', BUILDSET_TABLE, ['change'])
+    op.create_index('change_idx', prefixed_buildset, ['change'])
 
     # To allow a dashboard to show a job lib view. buildset_id is included
     # so that it's a covering index and can satisfy the join back to buildset
     # without an additional lookup.
     op.create_index(
-        'job_name_buildset_id_idx', BUILD_TABLE, ['job_name', 'buildset_id'])
+        'job_name_buildset_id_idx', prefixed_build,
+        ['job_name', 'buildset_id'])
 
 
 def downgrade():

zuul/driver/sql/alembic/versions/4d3ebd7f06b9_set_up_initial_reporter_tables.py

@@ -19,9 +19,9 @@ BUILDSET_TABLE = 'zuul_buildset'
 BUILD_TABLE = 'zuul_build'
 
 
-def upgrade():
+def upgrade(table_prefix=''):
     op.create_table(
-        BUILDSET_TABLE,
+        table_prefix + BUILDSET_TABLE,
         sa.Column('id', sa.Integer, primary_key=True),
         sa.Column('zuul_ref', sa.String(255)),
         sa.Column('pipeline', sa.String(255)),
@@ -34,10 +34,10 @@ def upgrade():
     )
 
     op.create_table(
-        BUILD_TABLE,
+        table_prefix + BUILD_TABLE,
         sa.Column('id', sa.Integer, primary_key=True),
         sa.Column('buildset_id', sa.Integer,
-                  sa.ForeignKey(BUILDSET_TABLE + ".id")),
+                  sa.ForeignKey(table_prefix + BUILDSET_TABLE + ".id")),
         sa.Column('uuid', sa.String(36)),
         sa.Column('job_name', sa.String(255)),
         sa.Column('result', sa.String(255)),

zuul/driver/sql/alembic/versions/5efb477fa963_add_ref_url_column.py

@@ -30,8 +30,9 @@ from alembic import op
 import sqlalchemy as sa
 
 
-def upgrade():
-    op.add_column('zuul_buildset', sa.Column('ref_url', sa.String(255)))
+def upgrade(table_prefix=''):
+    op.add_column(
+        table_prefix + 'zuul_buildset', sa.Column('ref_url', sa.String(255)))
 
 
 def downgrade():

zuul/driver/sql/alembic/versions/60c119eb1e3f_use_build_set_results.py

@@ -18,8 +18,9 @@ import sqlalchemy as sa
 BUILDSET_TABLE = 'zuul_buildset'
 
 
-def upgrade():
-    op.add_column(BUILDSET_TABLE, sa.Column('result', sa.String(255)))
+def upgrade(table_prefix=''):
+    op.add_column(
+        table_prefix + BUILDSET_TABLE, sa.Column('result', sa.String(255)))
 
     connection = op.get_bind()
     connection.execute(
@@ -29,9 +30,9 @@ def upgrade():
              SELECT CASE score
                 WHEN 1 THEN 'SUCCESS'
                 ELSE 'FAILURE' END)
-        """.format(buildset_table=BUILDSET_TABLE))
+        """.format(buildset_table=table_prefix + BUILDSET_TABLE))
 
-    op.drop_column(BUILDSET_TABLE, 'score')
+    op.drop_column(table_prefix + BUILDSET_TABLE, 'score')
 
 
 def downgrade():

zuul/driver/sql/alembic/versions/ba4cdce9b18c_add_rev_columns.py

@@ -16,9 +16,11 @@ from alembic import op
 import sqlalchemy as sa
 
 
-def upgrade():
-    op.add_column('zuul_buildset', sa.Column('oldrev', sa.String(255)))
-    op.add_column('zuul_buildset', sa.Column('newrev', sa.String(255)))
+def upgrade(table_prefix=''):
+    op.add_column(
+        table_prefix + 'zuul_buildset', sa.Column('oldrev', sa.String(255)))
+    op.add_column(
+        table_prefix + 'zuul_buildset', sa.Column('newrev', sa.String(255)))
 
 
 def downgrade():

zuul/driver/sql/alembic/versions/f86c9871ee67_add_tenant_column.py

@@ -30,8 +30,9 @@ from alembic import op
 import sqlalchemy as sa
 
 
-def upgrade():
-    op.add_column('zuul_buildset', sa.Column('tenant', sa.String(255)))
+def upgrade(table_prefix=''):
+    op.add_column(
+        table_prefix + 'zuul_buildset', sa.Column('tenant', sa.String(255)))
 
 
 def downgrade():