|
| 1 | +"""Add compliance scheduler tables for adaptive compliance scanning |
| 2 | +
|
| 3 | +Revision ID: 026_compliance_scheduler |
| 4 | +Revises: 025_host_monitoring_history |
| 5 | +Create Date: 2026-02-09 |
| 6 | +
|
| 7 | +Creates tables for the Adaptive Compliance Scheduler: |
| 8 | +- host_compliance_schedule: Per-host scheduling state and next scan time |
| 9 | +- compliance_scheduler_config: Global scheduler configuration (intervals, priorities) |
| 10 | +
|
| 11 | +This enables automatic compliance scanning with state-based intervals (max 48 hours). |
| 12 | +""" |
| 13 | + |
| 14 | +import sqlalchemy as sa |
| 15 | +from sqlalchemy.dialects import postgresql |
| 16 | + |
| 17 | +from alembic import op |
| 18 | + |
| 19 | +# Revision identifiers |
| 20 | +revision = "026_compliance_scheduler" |
| 21 | +down_revision = "025_host_monitoring_history" |
| 22 | +branch_labels = None |
| 23 | +depends_on = None |
| 24 | + |
| 25 | + |
| 26 | +def upgrade() -> None: |
| 27 | + """Create compliance scheduler tables.""" |
| 28 | + conn = op.get_bind() |
| 29 | + |
| 30 | + # 1. Create host_compliance_schedule table |
| 31 | + result = conn.execute( |
| 32 | + sa.text( |
| 33 | + "SELECT EXISTS (SELECT FROM information_schema.tables " "WHERE table_name = 'host_compliance_schedule')" |
| 34 | + ) |
| 35 | + ) |
| 36 | + if not result.scalar(): |
| 37 | + op.create_table( |
| 38 | + "host_compliance_schedule", |
| 39 | + sa.Column( |
| 40 | + "id", |
| 41 | + postgresql.UUID(as_uuid=True), |
| 42 | + primary_key=True, |
| 43 | + server_default=sa.text("gen_random_uuid()"), |
| 44 | + ), |
| 45 | + sa.Column( |
| 46 | + "host_id", |
| 47 | + postgresql.UUID(as_uuid=True), |
| 48 | + sa.ForeignKey("hosts.id", ondelete="CASCADE"), |
| 49 | + nullable=False, |
| 50 | + unique=True, |
| 51 | + ), |
| 52 | + # Current compliance state |
| 53 | + sa.Column( |
| 54 | + "compliance_score", |
| 55 | + sa.Float, |
| 56 | + nullable=True, |
| 57 | + ), |
| 58 | + sa.Column( |
| 59 | + "compliance_state", |
| 60 | + sa.String(20), |
| 61 | + nullable=False, |
| 62 | + server_default="unknown", |
| 63 | + ), |
| 64 | + sa.Column( |
| 65 | + "has_critical_findings", |
| 66 | + sa.Boolean, |
| 67 | + nullable=False, |
| 68 | + server_default="false", |
| 69 | + ), |
| 70 | + sa.Column( |
| 71 | + "pass_count", |
| 72 | + sa.Integer, |
| 73 | + nullable=True, |
| 74 | + ), |
| 75 | + sa.Column( |
| 76 | + "fail_count", |
| 77 | + sa.Integer, |
| 78 | + nullable=True, |
| 79 | + ), |
| 80 | + # Scheduling |
| 81 | + sa.Column( |
| 82 | + "current_interval_minutes", |
| 83 | + sa.Integer, |
| 84 | + nullable=False, |
| 85 | + server_default="1440", # 24 hours default |
| 86 | + ), |
| 87 | + sa.Column( |
| 88 | + "next_scheduled_scan", |
| 89 | + sa.DateTime(timezone=True), |
| 90 | + nullable=True, |
| 91 | + ), |
| 92 | + sa.Column( |
| 93 | + "last_scan_completed", |
| 94 | + sa.DateTime(timezone=True), |
| 95 | + nullable=True, |
| 96 | + ), |
| 97 | + sa.Column( |
| 98 | + "last_scan_id", |
| 99 | + postgresql.UUID(as_uuid=True), |
| 100 | + nullable=True, |
| 101 | + ), |
| 102 | + # Maintenance mode |
| 103 | + sa.Column( |
| 104 | + "maintenance_mode", |
| 105 | + sa.Boolean, |
| 106 | + nullable=False, |
| 107 | + server_default="false", |
| 108 | + ), |
| 109 | + sa.Column( |
| 110 | + "maintenance_until", |
| 111 | + sa.DateTime(timezone=True), |
| 112 | + nullable=True, |
| 113 | + ), |
| 114 | + # Scan priority (1-10, higher = more urgent) |
| 115 | + sa.Column( |
| 116 | + "scan_priority", |
| 117 | + sa.Integer, |
| 118 | + nullable=False, |
| 119 | + server_default="5", |
| 120 | + ), |
| 121 | + # Failure tracking |
| 122 | + sa.Column( |
| 123 | + "consecutive_scan_failures", |
| 124 | + sa.Integer, |
| 125 | + nullable=False, |
| 126 | + server_default="0", |
| 127 | + ), |
| 128 | + # Audit timestamps |
| 129 | + sa.Column( |
| 130 | + "created_at", |
| 131 | + sa.DateTime(timezone=True), |
| 132 | + nullable=False, |
| 133 | + server_default=sa.text("CURRENT_TIMESTAMP"), |
| 134 | + ), |
| 135 | + sa.Column( |
| 136 | + "updated_at", |
| 137 | + sa.DateTime(timezone=True), |
| 138 | + nullable=False, |
| 139 | + server_default=sa.text("CURRENT_TIMESTAMP"), |
| 140 | + ), |
| 141 | + ) |
| 142 | + |
| 143 | + # Index for finding hosts due for scanning |
| 144 | + op.create_index( |
| 145 | + "ix_compliance_schedule_next_scan", |
| 146 | + "host_compliance_schedule", |
| 147 | + ["next_scheduled_scan"], |
| 148 | + postgresql_where=sa.text("maintenance_mode = false"), |
| 149 | + ) |
| 150 | + |
| 151 | + # Index for querying by compliance state |
| 152 | + op.create_index( |
| 153 | + "ix_compliance_schedule_state", |
| 154 | + "host_compliance_schedule", |
| 155 | + ["compliance_state"], |
| 156 | + ) |
| 157 | + |
| 158 | + # Index for priority-based scanning |
| 159 | + op.create_index( |
| 160 | + "ix_compliance_schedule_priority", |
| 161 | + "host_compliance_schedule", |
| 162 | + ["scan_priority"], |
| 163 | + ) |
| 164 | + |
| 165 | + # 2. Create compliance_scheduler_config table (singleton config) |
| 166 | + result = conn.execute( |
| 167 | + sa.text( |
| 168 | + "SELECT EXISTS (SELECT FROM information_schema.tables " "WHERE table_name = 'compliance_scheduler_config')" |
| 169 | + ) |
| 170 | + ) |
| 171 | + if not result.scalar(): |
| 172 | + op.create_table( |
| 173 | + "compliance_scheduler_config", |
| 174 | + sa.Column( |
| 175 | + "id", |
| 176 | + sa.Integer, |
| 177 | + primary_key=True, |
| 178 | + ), |
| 179 | + sa.Column( |
| 180 | + "enabled", |
| 181 | + sa.Boolean, |
| 182 | + nullable=False, |
| 183 | + server_default="true", |
| 184 | + ), |
| 185 | + # Intervals in minutes for each compliance state |
| 186 | + sa.Column( |
| 187 | + "interval_compliant", |
| 188 | + sa.Integer, |
| 189 | + nullable=False, |
| 190 | + server_default="1440", # 24 hours |
| 191 | + ), |
| 192 | + sa.Column( |
| 193 | + "interval_mostly_compliant", |
| 194 | + sa.Integer, |
| 195 | + nullable=False, |
| 196 | + server_default="720", # 12 hours |
| 197 | + ), |
| 198 | + sa.Column( |
| 199 | + "interval_partial", |
| 200 | + sa.Integer, |
| 201 | + nullable=False, |
| 202 | + server_default="360", # 6 hours |
| 203 | + ), |
| 204 | + sa.Column( |
| 205 | + "interval_low", |
| 206 | + sa.Integer, |
| 207 | + nullable=False, |
| 208 | + server_default="120", # 2 hours |
| 209 | + ), |
| 210 | + sa.Column( |
| 211 | + "interval_critical", |
| 212 | + sa.Integer, |
| 213 | + nullable=False, |
| 214 | + server_default="60", # 1 hour |
| 215 | + ), |
| 216 | + sa.Column( |
| 217 | + "interval_unknown", |
| 218 | + sa.Integer, |
| 219 | + nullable=False, |
| 220 | + server_default="0", # Immediate |
| 221 | + ), |
| 222 | + sa.Column( |
| 223 | + "interval_maintenance", |
| 224 | + sa.Integer, |
| 225 | + nullable=False, |
| 226 | + server_default="2880", # 48 hours (max) |
| 227 | + ), |
| 228 | + # Maximum interval (enforced ceiling) |
| 229 | + sa.Column( |
| 230 | + "max_interval_minutes", |
| 231 | + sa.Integer, |
| 232 | + nullable=False, |
| 233 | + server_default="2880", # 48 hours |
| 234 | + ), |
| 235 | + # Priority levels (1-10, higher = more urgent) |
| 236 | + sa.Column( |
| 237 | + "priority_compliant", |
| 238 | + sa.Integer, |
| 239 | + nullable=False, |
| 240 | + server_default="3", |
| 241 | + ), |
| 242 | + sa.Column( |
| 243 | + "priority_mostly_compliant", |
| 244 | + sa.Integer, |
| 245 | + nullable=False, |
| 246 | + server_default="4", |
| 247 | + ), |
| 248 | + sa.Column( |
| 249 | + "priority_partial", |
| 250 | + sa.Integer, |
| 251 | + nullable=False, |
| 252 | + server_default="6", |
| 253 | + ), |
| 254 | + sa.Column( |
| 255 | + "priority_low", |
| 256 | + sa.Integer, |
| 257 | + nullable=False, |
| 258 | + server_default="7", |
| 259 | + ), |
| 260 | + sa.Column( |
| 261 | + "priority_critical", |
| 262 | + sa.Integer, |
| 263 | + nullable=False, |
| 264 | + server_default="9", |
| 265 | + ), |
| 266 | + sa.Column( |
| 267 | + "priority_unknown", |
| 268 | + sa.Integer, |
| 269 | + nullable=False, |
| 270 | + server_default="10", |
| 271 | + ), |
| 272 | + sa.Column( |
| 273 | + "priority_maintenance", |
| 274 | + sa.Integer, |
| 275 | + nullable=False, |
| 276 | + server_default="1", |
| 277 | + ), |
| 278 | + # Concurrency and timeout settings |
| 279 | + sa.Column( |
| 280 | + "max_concurrent_scans", |
| 281 | + sa.Integer, |
| 282 | + nullable=False, |
| 283 | + server_default="5", |
| 284 | + ), |
| 285 | + sa.Column( |
| 286 | + "scan_timeout_seconds", |
| 287 | + sa.Integer, |
| 288 | + nullable=False, |
| 289 | + server_default="600", # 10 minutes |
| 290 | + ), |
| 291 | + # Audit |
| 292 | + sa.Column( |
| 293 | + "updated_at", |
| 294 | + sa.DateTime(timezone=True), |
| 295 | + nullable=False, |
| 296 | + server_default=sa.text("CURRENT_TIMESTAMP"), |
| 297 | + ), |
| 298 | + ) |
| 299 | + |
| 300 | + # Insert default configuration (id=1) |
| 301 | + conn.execute( |
| 302 | + sa.text( |
| 303 | + """ |
| 304 | + INSERT INTO compliance_scheduler_config (id) |
| 305 | + VALUES (1) |
| 306 | + ON CONFLICT (id) DO NOTHING |
| 307 | + """ |
| 308 | + ) |
| 309 | + ) |
| 310 | + |
| 311 | + |
| 312 | +def downgrade() -> None: |
| 313 | + """Drop compliance scheduler tables.""" |
| 314 | + # Drop indexes first |
| 315 | + op.drop_index("ix_compliance_schedule_priority", table_name="host_compliance_schedule") |
| 316 | + op.drop_index("ix_compliance_schedule_state", table_name="host_compliance_schedule") |
| 317 | + op.drop_index("ix_compliance_schedule_next_scan", table_name="host_compliance_schedule") |
| 318 | + |
| 319 | + # Drop tables |
| 320 | + op.drop_table("compliance_scheduler_config") |
| 321 | + op.drop_table("host_compliance_schedule") |
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