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Add operation-owned legacy IndeeHub maintenance controller draft

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archipelago
2026-10-07 02:24:50 -04:00
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scripts/indeehub-maintenance-controller.py
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#!/usr/bin/env python3
"""Operation-owned legacy IndeeHub maintenance. Called only by supervised updater.
No live execution is part of source qualification. Original writable-layer images
must already be durable. Never unlock ARCHY_UPDATE_LOCK_FD or release another hold.
"""
import datetime, hashlib, json, os, pathlib, re, shutil, subprocess, sys, time, uuid
NAMES = ('indeedhub','indeedhub-api','indeedhub-ffmpeg','indeedhub-minio','indeedhub-postgres','indeedhub-redis','indeedhub-relay')
DATA = pathlib.Path('/var/lib/archipelago')
QUEUE_SCRIPT = r'''const {Queue}=require('bullmq');
(async()=>{const q=new Queue('transcode',{connection:{host:process.env.QUEUE_HOST,port:Number(process.env.QUEUE_PORT||6379),password:process.env.QUEUE_PASSWORD,maxRetriesPerRequest:1}});
try{const action=process.argv[1];if(action==='pause')await q.pause();else if(action==='resume')await q.resume();else if(action!=='status')throw Error('action');
console.log(JSON.stringify({paused:await q.isPaused(),counts:await q.getJobCounts('active','waiting','paused','delayed','failed','completed')}));}
finally{await q.close()}})().catch(()=>process.exit(1));'''
def require(condition, message):
if not condition: raise RuntimeError(message)
def atomic(path, value):
path.parent.mkdir(mode=0o700, parents=True, exist_ok=True)
require(not path.is_symlink(), 'Refuse symbolic journal path')
temporary=path.with_name('.'+path.name+'.'+str(uuid.uuid4()))
with temporary.open('x') as stream:
json.dump(value,stream,separators=(',',':'));stream.flush();os.fsync(stream.fileno())
os.chmod(temporary,0o600);os.replace(temporary,path)
descriptor=os.open(path.parent,os.O_RDONLY);os.fsync(descriptor);os.close(descriptor)
def sha(path):
with path.open('rb') as stream:return hashlib.file_digest(stream,'sha256').hexdigest()
def validate_members(members):
require(isinstance(members,list) and len(members)==7,'Seven exact original members required')
require({m.get('name') for m in members}==set(NAMES),'IndeeHub member scope changed')
for m in members:
require(set(m)=={'name','container_id','image_id','unit_sha256','config_sha256','running'},'Unexpected member fields')
for key in ('container_id','image_id','unit_sha256','config_sha256'):
require(bool(re.fullmatch('[0-9a-f]{64}',m[key])),'Invalid original identity/hash')
require(m['running'] is True,'Legacy barrier currently supports an originally running complete stack only')
return sorted(members,key=lambda m:m['name'])
def validate_nginx_guards(config):
guard='if (-f /var/lib/archipelago/app-maintenance/indeedhub) { return 503; }'
lines=config.splitlines();matched=0;index=0
while index<len(lines):
header=lines[index]
if not re.match(r'^\s*location\b.*\{\s*$',header):index+=1;continue
block=[];depth=0
while index<len(lines):
line=lines[index];block.append(line)
unquoted=re.sub(r"(['\"])(?:\\.|(?!\1).)*\1",'',line).split('#',1)[0]
depth+=unquoted.count('{')-unquoted.count('}');index+=1
if depth==0:break
body='\n'.join(block)
if '/app/indeedhub' in header or re.search(r'proxy_pass\s+https?://127[.]0[.]0[.]1:7778(?:/|;)',body):
require(bool(re.match(r'^\s*location\s+(?:\^~\s+|=\s+)?/app/indeedhub(?:/[^\s{]*)?\s*\{\s*$',header)),'Unrecognized direct IndeeHub proxy exposure')
require(guard in body,'An IndeeHub proxy route is missing its maintenance guard')
matched+=1
require(matched>=3,'Expected complete legacy IndeeHub route guards')
return matched
class Controller:
def __init__(self, data, operation, lock_fd, runner=None):
self.data=pathlib.Path(data);self.operation=operation;self.lock_fd=lock_fd;self.runner=runner
require(str(uuid.UUID(operation))==operation,'Invalid operation UUID')
self.root=self.data/'update-transactions'/'indeehub-maintenance'/operation
self.path=self.root/'journal.json';self.fence=self.data/'app-maintenance'/'indeedhub'
self.record=json.loads(self.path.read_text()) if self.path.exists() else None
if self.record:require(self.record['operation_id']==operation,'Maintenance journal changed')
def save(self): atomic(self.path,self.record)
def run(self, argv, timeout=30, output=None):
if self.runner:return self.runner(argv,timeout,output)
self.root.mkdir(mode=0o700,parents=True,exist_ok=True)
with (self.root/'commands.private.log').open('ab') as errors:
result=subprocess.run(argv,stdout=output or subprocess.PIPE,stderr=errors,timeout=timeout,check=True,pass_fds=(self.lock_fd,))
if output:return b''
require(len(result.stdout)<=2*1024*1024,'Command response exceeds bound')
return result.stdout
def inspect(self, name):
rows=json.loads(self.run(['podman','inspect',name]));require(len(rows)==1,'Unexpected container inspection');return rows[0]
def holds(self):
for name in NAMES:
path=self.data/'update-transactions'/'holds'/name
require(path.is_file() and not path.is_symlink() and path.read_text()==self.operation,'Matching durable lifecycle hold required')
def fence_matches(self):
require(self.fence.is_file() and not self.fence.is_symlink() and self.fence.read_text()==self.operation,'Admission fence ownership changed')
def close_ingress(self):
# The deployed native AppGate and legacy nginx guards consume this exact
# sentinel. This code never edits arbitrary nginx configuration.
config=self.run(['sudo','-n','nginx','-T']).decode()
validate_nginx_guards(config)
self.fence.parent.mkdir(mode=0o755,exist_ok=True)
self.fence.parent.chmod(0o755)
require(not self.fence.parent.is_symlink(),'Admission directory is a symlink')
if self.fence.exists():self.fence_matches()
else:
with self.fence.open('x') as stream:stream.write(self.operation);stream.flush();os.fsync(stream.fileno())
self.fence.chmod(0o644)
fd=os.open(self.fence.parent,os.O_RDONLY);os.fsync(fd);os.close(fd)
# A local legacy probe must be rejected without entering the old app.
import urllib.request,urllib.error
try:
urllib.request.urlopen('http://127.0.0.1/app/indeedhub/__maintenance_probe',timeout=5)
raise RuntimeError('Legacy ingress was not fenced')
except urllib.error.HTTPError as error:
require(error.code==503,'Legacy ingress guard did not return maintenance status')
self.record['ingress_closed']=True;self.save()
def queue(self, action):
result=json.loads(self.run(['podman','exec','indeedhub-api','node','-e',QUEUE_SCRIPT,action]))
require(type(result.get('paused')) is bool and isinstance(result.get('counts'),dict),'Invalid queue observation')
for value in result['counts'].values():require(type(value) is int and value>=0,'Invalid job count')
return result
def pause_queue(self):
if 'queue_was_paused' not in self.record:
original=self.queue('status');self.record['queue_was_paused']=original['paused'];self.record['queue_original_counts']=original['counts'];self.save()
state=self.queue('pause');require(state['paused'],'Worker admission did not close')
self.record['queue_pause_confirmed']=True;self.save()
def graceful_stop(self, name):
# Save the obligation before systemd can remove an AutoRemove container.
stopped=self.record.setdefault('stopped',{})
if stopped.get(name,{}).get('confirmed'):return
member=next(m for m in self.record['original_members'] if m['name']==name)
if name not in stopped:
actual=self.inspect(name);require(actual['Id']==member['container_id'] and actual['Image']==member['image_id'],'Original container changed before stop')
stopped[name]={'intent_at':time.time(),'container_id':actual['Id']};self.save()
self.run(['systemctl','--user','stop',name+'.service'],timeout=180)
properties=self.run(['systemctl','--user','show',name+'.service','--property=ActiveState,SubState,Result,ExecMainStatus']).decode()
require('ActiveState=inactive' in properties and 'Result=success' in properties,'Service did not stop successfully')
# --rm removes inspect state. Require a persisted Podman died event for
# this exact original ID; a forced SIGKILL is never called completed work.
events=self.run(['podman','events','--stream=false','--since',str(int(stopped[name]['intent_at'])-1),'--filter','container='+member['container_id'],'--filter','event=died','--format','json']).decode().splitlines()
matching=[json.loads(line) for line in events if line.strip()]
matching=[event for event in matching if event.get('ID',event.get('id'))==member['container_id']]
require(matching,'Original process exit evidence unavailable; hold retained')
code=matching[-1].get('ContainerExitCode',matching[-1].get('containerExitCode'))
require(str(code)=='0','Original process did not exit cleanly; active work is not claimed completed')
stopped[name].update(confirmed=True,exit_code=0,confirmed_at=time.time());self.save()
def volume_sources(self):
expected=['indeedhub-minio-data','indeedhub-postgres-data','indeedhub-redis-data','indeedhub-relay-data']
rows=json.loads(self.run(['podman','volume','inspect',*expected]))
require({row['Name'] for row in rows}==set(expected),'Persistent volume scope changed')
return {row['Name']:row['Mountpoint'] for row in rows}
def backup(self):
if self.record.get('backup_complete'):return
sources=self.volume_sources();self.record['volume_sources']=sources;self.save()
backup=self.root/'backup';backup.mkdir(mode=0o700,exist_ok=True)
if 'database.dump' not in self.record.setdefault('artifacts',{}):
path=backup/'database.dump.partial'
with path.open('wb') as output:self.run(['podman','exec','indeedhub-postgres','pg_dump','-U','indeedhub','-d','indeedhub','--format=custom','--no-owner','--no-acl'],timeout=300,output=output);output.flush();os.fsync(output.fileno())
final=backup/'database.dump';os.replace(path,final);self.record['artifacts']['database.dump']={'bytes':final.stat().st_size,'sha256':sha(final)};self.save()
# Redis stop flushes persisted queue state; its clean process exit is
# checked exactly as every other service. SQLite WAL is archived with DB.
for name in ('indeedhub-minio','indeedhub-redis','indeedhub-relay','indeedhub-postgres'):self.graceful_stop(name)
for volume,source in sources.items():
name=volume+'.tar'
if name in self.record['artifacts']:continue
require(pathlib.Path(source).is_absolute() and source.endswith('/_data'),'Invalid volume mountpoint')
available=shutil.disk_usage(backup).free
measured=int(self.run(['podman','unshare','du','-sb',source]).decode().split()[0])
require(available>measured+512*1024*1024,'Insufficient durable backup space')
partial=backup/(name+'.partial')
with partial.open('wb') as output:self.run(['podman','unshare','tar','--xattrs','--acls','--numeric-owner','-C',source,'-cpf','-','.'],timeout=1800,output=output);output.flush();os.fsync(output.fileno())
final=backup/name;os.replace(partial,final);self.record['artifacts'][name]={'bytes':final.stat().st_size,'sha256':sha(final)};self.save()
self.record['backup_complete']=True;self.record['phase']='Drained';self.save()
def acquire(self, members, recovery=False):
members=validate_members(members);self.holds()
if self.record:require(self.record['original_members']==members,'Original operation terms changed')
else:
self.record={'operation_id':self.operation,'original_members':members,'phase':'Prepared','created_at':time.time()};self.save()
require(self.record['phase']!='Released','Completed maintenance must not be reacquired')
if not recovery and not self.record.get('originals_validated'):
for member in members:
actual=self.inspect(member['name']);require(actual['Id']==member['container_id'] and actual['Image']==member['image_id'],'Original member changed')
bindings=actual['HostConfig'].get('PortBindings') or {}
if member['name']=='indeedhub':require(bindings=={'7777/tcp':[{'HostIp':'127.0.0.1','HostPort':'7778'}]},'Unsupported direct frontend exposure')
else:require(not bindings,'Unsupported direct writer exposure')
source=pathlib.Path(self.run(['systemctl','--user','show',member['name']+'.service','--property=SourcePath','--value']).decode().strip())
require(source.is_file() and not source.is_symlink() and source.suffix=='.container','Original unit source missing')
require(source.stat().st_uid==os.getuid() and sha(source)==member['unit_sha256'],'Original unit source changed')
self.record['originals_validated']=True;self.save()
self.close_ingress()
if recovery:
runtime=json.loads((self.data/'update-transactions'/'supervised'/(self.operation+'.json')).read_text())
require(runtime.get('phase')=='Restoring' and type(runtime.get('target_startup_began')) is bool,'Durable explicit restoring obligation required')
self.record['phase']='Recovering';self.record['target_startup_began']=runtime['target_startup_began'];self.save()
return {'operation_id':self.operation,'state':'recovering'}
if not self.record.get('stopped',{}).get('indeedhub-api',{}).get('confirmed'):
self.pause_queue()
self.graceful_stop('indeedhub')
deadline=time.monotonic()+300
while True:
state=self.queue('status');require(state['paused'],'Worker admission reopened')
self.record['last_queue_counts']=state['counts'];self.save()
if state['counts'].get('active',0)==0:break
require(time.monotonic()<deadline,'Transcodes still active; retained job state, no forced completion')
time.sleep(1)
self.graceful_stop('indeedhub-ffmpeg');self.graceful_stop('indeedhub-api')
self.backup();self.verify();return {'operation_id':self.operation,'state':'drained'}
def verify(self):
self.holds();self.fence_matches()
if self.record and self.record.get('phase')=='Recovering':
runtime=json.loads((self.data/'update-transactions'/'supervised'/(self.operation+'.json')).read_text())
require(runtime.get('phase')=='Restoring','Recovery ownership changed')
return {'operation_id':self.operation,'state':'held'}
require(self.record and self.record.get('backup_complete'),'Drain not complete')
require(self.record['phase'] in ('Drained','Released'),'Invalid maintenance phase')
# Verification remains possible when API/storage endpoints are stopped.
# The native adapter separately validates target/original runtime identity.
for name in NAMES:require(self.record.get('stopped',{}).get(name,{}).get('confirmed'),'Original writer stop evidence missing')
for name,record in self.record['artifacts'].items():
path=self.root/'backup'/name;require(path.is_file() and not path.is_symlink() and path.stat().st_size==record['bytes'],'Backup artifact missing or changed')
return {'operation_id':self.operation,'state':'held'}
def release(self, outcome):
require(outcome in ('committed','restored','aborted'),'Invalid release outcome')
require(self.record is not None,'Unknown maintenance operation')
if self.record['phase']=='Released':
require(self.record.get('outcome')==outcome,'Maintenance outcome changed')
if self.fence.exists():
self.fence_matches();self.fence.unlink()
return {'operation_id':self.operation,'state':'released'}
self.holds();self.fence_matches()
runtime=json.loads((self.data/'update-transactions'/'supervised'/(self.operation+'.json')).read_text());phase=runtime['phase']
require(phase=={'committed':'Committed','restored':'Restored','aborted':'Restored'}[outcome],'Runtime outcome not durably verified')
# Restoring old runtime over a changed database is not sufficient to open
# admission. Node must verify same-schema/additive migration compatibility.
if outcome!='committed':
require(type(runtime.get('target_startup_began')) is bool,'Target-start obligation unavailable')
if runtime['target_startup_began']:
require(self.record.get('recovery_data_verified') is True,'Data compatibility after rollback needs recorded verification; ingress remains closed')
else:
self.record['rollback_data_claim']='No target startup/migration began; only original runtime restored.'
if not self.record.get('queue_was_paused',True):
state=self.queue('resume');require(not state['paused'],'Could not restore queue admission')
self.record['phase']='Released';self.record['outcome']=outcome;self.save()
self.fence.unlink();fd=os.open(self.fence.parent,os.O_RDONLY);os.fsync(fd);os.close(fd)
return {'operation_id':self.operation,'state':'released'}
def main():
os.umask(0o077);require(len(sys.argv)==2 and sys.argv[1] in ('acquire','verify','release'),'Unsupported maintenance action')
raw=sys.stdin.buffer.read(65537);require(len(raw)<=65536,'Maintenance request too large');request=json.loads(raw)
allowed={'operation_id','original_members'} if sys.argv[1]=='acquire' else {'operation_id','outcome'} if sys.argv[1]=='release' else {'operation_id'}
require(set(request) in (allowed, allowed|{'recovery'}) if sys.argv[1]=='acquire' else set(request)==allowed,'Unexpected maintenance fields')
if 'recovery' in request:require(type(request['recovery']) is bool,'Invalid recovery flag')
require(os.getuid()==1000,'Expected node service user');fd=int(os.environ['ARCHY_UPDATE_LOCK_FD']);actual=os.fstat(fd);expected=(DATA/'update-transactions'/'lock').stat();require((actual.st_dev,actual.st_ino)==(expected.st_dev,expected.st_ino),'Inherited lifecycle lock is not the expected file')
controller=Controller(DATA,request['operation_id'],fd)
result=controller.acquire(request['original_members'],request.get('recovery',False)) if sys.argv[1]=='acquire' else controller.verify() if sys.argv[1]=='verify' else controller.release(request['outcome'])
encoded=json.dumps(result);require(len(encoded)<=4096,'Maintenance response exceeds bound');print(encoded)
if __name__=='__main__':
try:main()
except Exception as error:
# Command/env details remain in private journal, never RPC/UI stdout.
print(json.dumps({'error':'Maintenance remains held; inspect its private operation journal','reason':type(error).__name__}),file=sys.stderr);sys.exit(1)