fix: Remove implicit trailing whitespace from the agents.architecture column

changes/559.fix

@@ -0,0 +1 @@
+Alter type of model `agents.architecture` column from CHAR to String

src/ai/backend/manager/models/agent.py

@@ -78,7 +78,7 @@ class AgentStatus(enum.Enum):
     sa.Column('lost_at', sa.DateTime(timezone=True), nullable=True),
 
     sa.Column('version', sa.String(length=64), nullable=False),
-    sa.Column('architecture', sa.CHAR(length=32), nullable=False),
+    sa.Column('architecture', sa.String(length=32), nullable=False),
     sa.Column('compute_plugins', pgsql.JSONB(), nullable=False, default={}),
 )
 

src/ai/backend/manager/models/alembic/versions/11146ba02235_change_char_col_to_str.py

@@ -0,0 +1,29 @@
+"""change char col to str
+
+Revision ID: 11146ba02235
+Revises: 0f7a4b643940
+Create Date: 2022-03-25 12:32:05.637628
+
+"""
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.sql.expression import bindparam
+
+# revision identifiers, used by Alembic.
+revision = '11146ba02235'
+down_revision = '0f7a4b643940'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    conn = op.get_bind()
+    op.alter_column('agents', column_name='architecture', type_=sa.String(length=32))
+    query = '''
+    UPDATE agents
+    SET architecture = TRIM (architecture);
+    '''
+    conn.execute(query)
+
+def downgrade():
+    op.alter_column('agents', column_name='architecture', type_=sa.CHAR(length=32))