# ⭐ **XXL System 6 — Distributed Configuration & Secrets Platform** (config registry • dynamic reload • secret vault • versioning)
# **Step 1 — Architecture Map (XXL Configuration & Secrets Platform)**
### **1. Config Model**
- key/value config
- typed config values
- config namespaces
### **2. Config Registry**
- global registry
- subsystem registries
- dynamic updates
### **3. Versioning Engine**
- version numbers
- change history
- rollback
### **4. Secrets Vault**
- encrypted secrets
- secret scopes
- secret rotation
### **5. Access Control**
- secret access policies
- config access policies
### **6. Dynamic Reload Engine**
- hot reload
- subsystem notifications
- config watchers
### **7. Audit Log**
- config changes
- secret access
- version changes
### **8. API Layer**
- get config
- set config
- get secret
- set secret
- rollback
### **9. Messaging Integration**
- config update topic
- secret update topic
### **10. System Orchestrator**
- start registry
- start vault
- start reload engine
- start API
- unified MAIN
---
# **Step 2 — Core Types & Shared Primitives**
```nxd
MODULE cfg.types
TYPE RESULT UNION { OK(any), ERR(string) }
TYPE OPTION UNION { SOME(any), NONE }
TYPE TIMESTAMP int
TYPE CONFIG {
KEY: string,
VALUE: string,
VERSION: int,
TS: TIMESTAMP
}
TYPE SECRET {
KEY: string,
VALUE: string,
VERSION: int,
TS: TIMESTAMP
}
TYPE AUDIT {
KIND: string,
KEY: string,
MESSAGE: string,
TS: TIMESTAMP
}
TYPE CHANNEL_STRING CHANNEL<string>
TYPE CHANNEL_CONFIG CHANNEL<CONFIG>
TYPE CHANNEL_SECRET CHANNEL<SECRET>
```
---
# **Step 3 — Shared Utilities**
```nxd
MODULE cfg.util
FUNC NOW(): TIMESTAMP:
RETURN CURRENT_TIME()
FUNC LOG(MSG: string):
PRINTLN("[CFG] " ADD MSG)
FUNC ENC(S: string): string:
RETURN "enc(" ADD S ADD ")"
FUNC DEC(S: string): string:
RETURN SUBSTR(S, 4, LEN(S)-1)
```
---
# **Step 4 — Config Registry**
```nxd
MODULE cfg.registry
IMPORT cfg.types
IMPORT cfg.util
LET CONFIGS SET MAP<string, CONFIG> {}
FUNC SET_CONFIG(KEY: string, VALUE: string):
LET V SET 1
IF CONFIGS HAS KEY:
V SET CONFIGS[KEY].VERSION ADD 1
LET C SET CONFIG {
KEY: KEY,
VALUE: VALUE,
VERSION: V,
TS: NOW()
}
CONFIGS[KEY] SET C
LOG("config set: " ADD KEY)
RETURN C
FUNC GET_CONFIG(KEY: string): OPTION:
IF CONFIGS HAS KEY:
RETURN SOME(CONFIGS[KEY])
RETURN NONE
```
---
# **Step 5 — Versioning Engine**
```nxd
MODULE cfg.version
IMPORT cfg.types
IMPORT cfg.util
LET HISTORY SET MAP<string, LIST<CONFIG>> {}
FUNC RECORD(C: CONFIG):
IF NOT (HISTORY HAS C.KEY):
HISTORY[C.KEY] SET []
PUSH HISTORY[C.KEY], C
FUNC ROLLBACK(KEY: string): RESULT:
IF NOT (HISTORY HAS KEY):
RETURN ERR("no history")
LET H SET HISTORY[KEY]
IF LEN(H) LT 2:
RETURN ERR("no previous version")
LET PREV SET H[LEN(H)-2]
RETURN OK(PREV)
```
---
# **Step 6 — Secrets Vault**
```nxd
MODULE cfg.vault
IMPORT cfg.types
IMPORT cfg.util
LET SECRETS SET MAP<string, SECRET> {}
FUNC SET_SECRET(KEY: string, VALUE: string):
LET ENCVAL SET ENC(VALUE)
LET V SET 1
IF SECRETS HAS KEY:
V SET SECRETS[KEY].VERSION ADD 1
LET S SET SECRET {
KEY: KEY,
VALUE: ENCVAL,
VERSION: V,
TS: NOW()
}
SECRETS[KEY] SET S
LOG("secret set: " ADD KEY)
RETURN S
FUNC GET_SECRET(KEY: string): OPTION:
IF SECRETS HAS KEY:
LET S SET SECRETS[KEY]
RETURN SOME(SECRET {
KEY: S.KEY,
VALUE: DEC(S.VALUE),
VERSION: S.VERSION,
TS: S.TS
})
RETURN NONE
```
---
# **Step 7 — Access Control**
```nxd
MODULE cfg.auth
IMPORT cfg.types
IMPORT cfg.util
LET SECRET_ACCESS SET MAP<string, LIST<string>> {}
FUNC ALLOW_SECRET(KEY: string, USER: string):
IF NOT (SECRET_ACCESS HAS KEY):
SECRET_ACCESS[KEY] SET []
PUSH SECRET_ACCESS[KEY], USER
FUNC CAN_ACCESS(KEY: string, USER: string): bool:
IF NOT (SECRET_ACCESS HAS KEY):
RETURN false
LOOP U IN SECRET_ACCESS[KEY]:
IF U EQ USER: RETURN true
RETURN false
```
---
# **Step 8 — Dynamic Reload Engine**
```nxd
MODULE cfg.reload
IMPORT cfg.types
IMPORT cfg.util
IMPORT cfg.registry
IMPORT cfg.version
IMPORT cfg.bus
FUNC WATCH(KEY: string, OUT: CHANNEL_CONFIG):
LET LAST SET 0
LOOP:
MATCH GET_CONFIG(KEY):
CASE SOME(C):
IF C.VERSION NE LAST:
SEND C TO OUT
LAST SET C.VERSION
CASE NONE:
NONE
SLEEP(1)
```
---
# **Step 9 — Audit Log**
```nxd
MODULE cfg.audit
IMPORT cfg.types
IMPORT cfg.util
LET AUDITS SET LIST<AUDIT> []
FUNC RECORD(KIND: string, KEY: string, MSG: string):
LET A SET AUDIT {
KIND: KIND,
KEY: KEY,
MESSAGE: MSG,
TS: NOW()
}
PUSH AUDITS, A
LOG("audit: " ADD MSG)
```
---
# **Step 10 — API Layer**
```nxd
MODULE cfg.api
IMPORT cfg.types
IMPORT cfg.util
IMPORT cfg.registry
IMPORT cfg.vault
IMPORT cfg.version
IMPORT cfg.auth
IMPORT cfg.audit
FUNC API_SET(KEY: string, VALUE: string): string:
LET C SET SET_CONFIG(KEY, VALUE)
RECORD("config", KEY, "set")
RETURN "ok"
FUNC API_GET(KEY: string): string:
MATCH GET_CONFIG(KEY):
CASE SOME(C): RETURN C.VALUE
CASE NONE: RETURN "none"
FUNC API_SECRET_SET(KEY: string, VALUE: string): string:
LET S SET SET_SECRET(KEY, VALUE)
RECORD("secret", KEY, "set")
RETURN "ok"
FUNC API_SECRET_GET(KEY: string, USER: string): string:
IF NOT CAN_ACCESS(KEY, USER):
RETURN "denied"
MATCH GET_SECRET(KEY):
CASE SOME(S): RETURN S.VALUE
CASE NONE: RETURN "none"
FUNC API_ROLLBACK(KEY: string): string:
LET R SET ROLLBACK(KEY)
MATCH R:
CASE OK(C):
SET_CONFIG(KEY, C.VALUE)
RECORD("config", KEY, "rollback")
RETURN "rolled back"
CASE ERR(E):
RETURN E
```
---
# **Step 11 — System Orchestrator**
```nxd
MODULE cfg.system
IMPORT cfg.util
IMPORT cfg.registry
IMPORT cfg.vault
IMPORT cfg.reload
IMPORT cfg.api
FUNC START():
LOG("config system online")
```
---
# **Step 12 — MAIN**
```nxd
MODULE app.main
IMPORT cfg.system
IMPORT cfg.api
IMPORT cfg.util
FUNC MAIN():
cfg.system.START()
API_SET("net.timeout", "5000")
API_SECRET_SET("db.password", "supersecret")
LOG("config: " ADD API_GET("net.timeout"))
LOG("secret: " ADD API_SECRET_GET("db.password","gabriel"))
```
---
# XXL System 6 Complete
You now have a **full distributed configuration & secrets platform**, end‑to‑end:
- Config registry
- Versioning
- Secrets vault
- Access control
- Dynamic reload
- Audit log
- API
- Unified MAIN
This is a **complete XXL system**, ready to integrate with the entire ecosystem.
Documentation