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| 1 | +"""Split Build Firmware and add Build Manifest |
| 2 | +
|
| 3 | +Revision ID: 30bc0c0455f8 |
| 4 | +Revises: f95855ce9471 |
| 5 | +Create Date: 2025-11-05 20:43:32.593098 |
| 6 | +
|
| 7 | +""" |
| 8 | + |
| 9 | +import sqlalchemy as sa |
| 10 | +from alembic import op |
| 11 | + |
| 12 | +# revision identifiers, used by Alembic. |
| 13 | +revision = "30bc0c0455f8" |
| 14 | +down_revision = "f95855ce9471" |
| 15 | +branch_labels = None |
| 16 | +depends_on = None |
| 17 | + |
| 18 | + |
| 19 | +def upgrade(): |
| 20 | + bind = op.get_bind() |
| 21 | + meta = sa.MetaData() |
| 22 | + |
| 23 | + # 1) Add new columns (nullable for backfill), add FKs |
| 24 | + op.add_column("build", sa.Column("firmware_min_id", sa.Integer(), nullable=True)) |
| 25 | + op.add_column("build", sa.Column("firmware_max_id", sa.Integer(), nullable=True)) |
| 26 | + op.create_foreign_key(None, "build", "firmware", ["firmware_min_id"], ["id"]) |
| 27 | + op.create_foreign_key(None, "build", "firmware", ["firmware_max_id"], ["id"]) |
| 28 | + |
| 29 | + # 2) Backfill firmware_min_id from legacy firmware_id (still present right now) |
| 30 | + op.execute("UPDATE build SET firmware_min_id = firmware_id") |
| 31 | + |
| 32 | + # 3) Make firmware_min_id NOT NULL |
| 33 | + op.alter_column( |
| 34 | + "build", "firmware_min_id", existing_type=sa.Integer(), nullable=False |
| 35 | + ) |
| 36 | + |
| 37 | + # 4) Drop old FK and legacy column firmware_id |
| 38 | + op.drop_constraint(op.f("build_firmware_id_fkey"), "build", type_="foreignkey") |
| 39 | + op.drop_column("build", "firmware_id") |
| 40 | + |
| 41 | + # 5) Create buildmanifest table |
| 42 | + op.create_table( |
| 43 | + "buildmanifest", |
| 44 | + sa.Column("id", sa.Integer(), primary_key=True), |
| 45 | + sa.Column("build_id", sa.Integer(), nullable=False, unique=True), |
| 46 | + sa.Column("dependencies", sa.Unicode(255)), |
| 47 | + sa.Column("conf_dependencies", sa.UnicodeText()), |
| 48 | + sa.Column("conflicts", sa.Unicode(255)), |
| 49 | + sa.Column("conf_conflicts", sa.UnicodeText()), |
| 50 | + sa.Column("conf_privilege", sa.UnicodeText()), |
| 51 | + sa.Column("conf_resource", sa.UnicodeText()), |
| 52 | + sa.ForeignKeyConstraint(["build_id"], ["build.id"]), |
| 53 | + ) |
| 54 | + |
| 55 | + # 6) Reflect |
| 56 | + build = sa.Table("build", meta, autoload_with=bind) |
| 57 | + version = sa.Table("version", meta, autoload_with=bind) |
| 58 | + buildmanifest = sa.Table("buildmanifest", meta, autoload_with=bind) |
| 59 | + |
| 60 | + # 7) Backfill buildmanifest: one row per build using its version’s fields |
| 61 | + sel = sa.select( |
| 62 | + build.c.id.label("build_id"), |
| 63 | + version.c.dependencies, |
| 64 | + version.c.conf_dependencies, |
| 65 | + version.c.conflicts, |
| 66 | + version.c.conf_conflicts, |
| 67 | + version.c.conf_privilege, |
| 68 | + version.c.conf_resource, |
| 69 | + ).select_from(build.join(version, build.c.version_id == version.c.id)) |
| 70 | + |
| 71 | + rows = bind.execute(sel).fetchall() |
| 72 | + if rows: |
| 73 | + bind.execute( |
| 74 | + buildmanifest.insert(), |
| 75 | + [ |
| 76 | + { |
| 77 | + "build_id": r.build_id, |
| 78 | + "dependencies": r.dependencies, |
| 79 | + "conf_dependencies": r.conf_dependencies, |
| 80 | + "conflicts": r.conflicts, |
| 81 | + "conf_conflicts": r.conf_conflicts, |
| 82 | + "conf_privilege": r.conf_privilege, |
| 83 | + "conf_resource": r.conf_resource, |
| 84 | + } |
| 85 | + for r in rows |
| 86 | + ], |
| 87 | + ) |
| 88 | + |
| 89 | + # 8) Drop moved columns from version |
| 90 | + op.drop_column("version", "conf_resource") |
| 91 | + op.drop_column("version", "conf_dependencies") |
| 92 | + op.drop_column("version", "conf_conflicts") |
| 93 | + op.drop_column("version", "dependencies") |
| 94 | + op.drop_column("version", "conf_privilege") |
| 95 | + op.drop_column("version", "conflicts") |
| 96 | + |
| 97 | + |
| 98 | +def downgrade(): |
| 99 | + bind = op.get_bind() |
| 100 | + meta = sa.MetaData() |
| 101 | + |
| 102 | + # 1) Recreate columns on version |
| 103 | + op.add_column("version", sa.Column("conflicts", sa.Unicode(255))) |
| 104 | + op.add_column("version", sa.Column("conf_privilege", sa.UnicodeText())) |
| 105 | + op.add_column("version", sa.Column("dependencies", sa.Unicode(255))) |
| 106 | + op.add_column("version", sa.Column("conf_conflicts", sa.UnicodeText())) |
| 107 | + op.add_column("version", sa.Column("conf_dependencies", sa.UnicodeText())) |
| 108 | + op.add_column("version", sa.Column("conf_resource", sa.UnicodeText())) |
| 109 | + |
| 110 | + # Reflect |
| 111 | + version = sa.Table("version", meta, autoload_with=bind) |
| 112 | + build = sa.Table("build", meta, autoload_with=bind) |
| 113 | + buildmanifest = sa.Table("buildmanifest", meta, autoload_with=bind) |
| 114 | + |
| 115 | + # 2) Copy manifest back to version using the first build (lowest build.id) per version |
| 116 | + first_build_cte = ( |
| 117 | + sa.select( |
| 118 | + build.c.version_id, |
| 119 | + sa.func.min(build.c.id).label("first_build_id"), |
| 120 | + ) |
| 121 | + .group_by(build.c.version_id) |
| 122 | + .cte("first_build") |
| 123 | + ) |
| 124 | + |
| 125 | + sel = sa.select( |
| 126 | + version.c.id.label("version_id"), |
| 127 | + buildmanifest.c.dependencies, |
| 128 | + buildmanifest.c.conf_dependencies, |
| 129 | + buildmanifest.c.conflicts, |
| 130 | + buildmanifest.c.conf_conflicts, |
| 131 | + buildmanifest.c.conf_privilege, |
| 132 | + buildmanifest.c.conf_resource, |
| 133 | + ).select_from( |
| 134 | + version.join(first_build_cte, first_build_cte.c.version_id == version.c.id) |
| 135 | + .join(build, build.c.id == first_build_cte.c.first_build_id) |
| 136 | + .join(buildmanifest, buildmanifest.c.build_id == build.c.id) |
| 137 | + ) |
| 138 | + |
| 139 | + rows = bind.execute(sel).fetchall() |
| 140 | + for r in rows: |
| 141 | + bind.execute( |
| 142 | + version.update() |
| 143 | + .where(version.c.id == r.version_id) |
| 144 | + .values( |
| 145 | + dependencies=r.dependencies, |
| 146 | + conf_dependencies=r.conf_dependencies, |
| 147 | + conflicts=r.conflicts, |
| 148 | + conf_conflicts=r.conf_conflicts, |
| 149 | + conf_privilege=r.conf_privilege, |
| 150 | + conf_resource=r.conf_resource, |
| 151 | + ) |
| 152 | + ) |
| 153 | + |
| 154 | + # 3) Drop buildmanifest |
| 155 | + op.drop_table("buildmanifest") |
| 156 | + |
| 157 | + # 4) Restore legacy firmware_id and backfill from firmware_min_id |
| 158 | + op.add_column("build", sa.Column("firmware_id", sa.Integer(), nullable=True)) |
| 159 | + |
| 160 | + op.execute("UPDATE build SET firmware_id = firmware_min_id") |
| 161 | + |
| 162 | + op.alter_column("build", "firmware_id", existing_type=sa.Integer(), nullable=False) |
| 163 | + op.create_foreign_key( |
| 164 | + op.f("build_firmware_id_fkey"), "build", "firmware", ["firmware_id"], ["id"] |
| 165 | + ) |
| 166 | + |
| 167 | + # 5) Drop FKs on firmware_min_id / firmware_max_id (names may be auto-generated) |
| 168 | + bind = op.get_bind() |
| 169 | + insp = sa.inspect(bind) |
| 170 | + for fk in insp.get_foreign_keys("build"): |
| 171 | + cols = tuple(fk.get("constrained_columns") or ()) |
| 172 | + if "firmware_min_id" in cols or "firmware_max_id" in cols: |
| 173 | + op.drop_constraint(fk["name"], "build", type_="foreignkey") |
| 174 | + |
| 175 | + # 6) Drop the new columns |
| 176 | + op.drop_column("build", "firmware_max_id") |
| 177 | + op.drop_column("build", "firmware_min_id") |
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