Pull Shelf info upon serial connect

es24n_conf.py

@@ -300,7 +300,7 @@ class SerialPort:
 
 # ── Step 1: Detect serial device ──────────────────────────────────────────────
 def detect_serial_device() -> Optional[str]:
-    rule("Step 1 of 6 -- Serial Cable & Device Detection")
+    rule("Step 1 of 5 -- Serial Cable & Device Detection")
 
     print("  Connect the serial cable from the ES24N IOM1 port")
     print("  to the active F-Series controller USB port.")
@@ -376,7 +376,7 @@ def _fix_permissions(device: str):
 
 # ── Step 2: Open serial connection & wake IOM console ─────────────────────────
 def open_serial_connection(device: str) -> Optional[SerialPort]:
-    rule("Step 2 of 6 -- Opening Serial Connection")
+    rule("Step 2 of 5 -- Opening Serial Connection")
 
     info(f"Opening {device} at 115200 baud (8N1)...")
     ser = SerialPort(device, baudrate=115200, timeout=5.0)
@@ -416,13 +416,127 @@ def open_serial_connection(device: str) -> Optional[SerialPort]:
     return ser
 
 
-# ── Step 3: Collect network configuration ─────────────────────────────────────
+# ── Redfish helpers (GET and PATCH) ──────────────────────────────────────────
-def collect_network_config(cfg: ShelfConfig):
+def _redfish_request(password: str, method: str, path: str,
-    rule("Step 3 of 6 -- IOM Network Configuration")
+                     payload: Optional[dict] = None) -> tuple:
+    """
+    Issue a Redfish HTTP request over the loopback (127.0.0.1).
+    Returns (success: bool, data: dict|str).
+    """
+    url         = f"https://127.0.0.1{path}"
+    credentials = b64encode(f"Admin:{password}".encode()).decode()
+    ctx         = ssl.create_default_context()
+    ctx.check_hostname = False
+    ctx.verify_mode    = ssl.CERT_NONE
 
-    print("  How should the IOMs be configured?")
+    body = json.dumps(payload).encode("utf-8") if payload else None
-    print(f"    {_c(C.BOLD, '1')}  Static IP addresses")
+    headers = {"Authorization": f"Basic {credentials}"}
-    print(f"    {_c(C.BOLD, '2')}  DHCP")
+    if body:
+        headers["Content-Type"] = "application/json"
+
+    req = urllib.request.Request(url, data=body, method=method, headers=headers)
+
+    try:
+        with urllib.request.urlopen(req, context=ctx, timeout=10) as resp:
+            raw = resp.read().decode("utf-8", errors="replace")
+            try:
+                return True, json.loads(raw) if raw.strip() else {}
+            except json.JSONDecodeError:
+                return True, {}
+
+    except urllib.error.HTTPError as e:
+        raw = e.read().decode("utf-8", errors="replace")
+        try:
+            msg = json.loads(raw).get("error", {}).get("message", raw)
+        except json.JSONDecodeError:
+            msg = raw
+        return False, f"HTTP {e.code}: {msg[:120]}"
+
+    except OSError as e:
+        return False, f"Connection error: {e}"
+
+
+# ── Step 3: Fetch & display current IOM network settings ─────────────────────
+def fetch_current_config(cfg: ShelfConfig) -> bool:
+    """
+    Query Redfish for the current network config of both IOMs.
+    Populates cfg.iom1 / cfg.iom2 with live data.
+    Returns True if at least one IOM responded.
+    """
+    rule("Step 3 of 5 -- Current IOM Network Settings")
+    info("Querying Redfish API for current network configuration...")
+    print()
+
+    any_ok = False
+    rows   = []
+
+    for iom in ("IOM1", "IOM2"):
+        path = f"/redfish/v1/Managers/{iom}/EthernetInterfaces/1"
+        ok_flag, data = _redfish_request(cfg.password, "GET", path)
+
+        if ok_flag and isinstance(data, dict):
+            any_ok = True
+
+            # Determine mode
+            dhcp_enabled = (
+                data.get("DHCPv4", {}).get("DHCPEnabled", False) or
+                data.get("DHCPv6", {}).get("DHCPEnabled", False)
+            )
+
+            # Pull address info — prefer StaticAddresses, fall back to IPv4Addresses
+            addrs = data.get("IPv4StaticAddresses") or data.get("IPv4Addresses", [])
+            if addrs:
+                addr_rec = addrs[0]
+                ip      = addr_rec.get("Address",    "--")
+                gateway = addr_rec.get("Gateway",    "--")
+                netmask = addr_rec.get("SubnetMask", "--")
+            else:
+                ip = gateway = netmask = "--"
+
+            origin = data.get("IPv4Addresses", [{}])[0].get("AddressOrigin", "Unknown") \
+                     if data.get("IPv4Addresses") else ("DHCP" if dhcp_enabled else "Static")
+
+            iom_cfg = IOMConfig(
+                iom     = iom,
+                dhcp    = dhcp_enabled,
+                ip      = ip      if ip      != "--" else "",
+                gateway = gateway if gateway != "--" else "",
+                netmask = netmask if netmask != "--" else "",
+            )
+            if iom == "IOM1":
+                cfg.iom1 = iom_cfg
+            else:
+                cfg.iom2 = iom_cfg
+
+            mode_str = f"{_c(C.CYN, 'DHCP')}" if dhcp_enabled else f"{_c(C.GRN, 'Static')}"
+            rows.append([iom, mode_str, origin, ip, gateway, netmask])
+        else:
+            rows.append([iom, _c(C.RED, "No response"), "--", "--", "--", "--"])
+
+    draw_table(
+        ["IOM", "Mode", "Origin", "IP Address", "Gateway", "Subnet Mask"],
+        rows,
+        [5, 10, 8, 16, 16, 16],
+    )
+    print()
+
+    if not any_ok:
+        error("Neither IOM responded to the Redfish query.")
+        error("Check that the serial cable is connected and the IOM is booted.")
+
+    return any_ok
+
+
+# ── Step 4: Prompt user — change config or exit ───────────────────────────────
+def collect_network_config(cfg: ShelfConfig) -> bool:
+    """
+    Show current settings, ask user what to do.
+    Returns True to proceed with applying changes, False to skip.
+    """
+    rule("Step 4 of 5 -- Change Configuration?")
+
+    print(f"    {_c(C.BOLD, '1')}  Change network configuration")
+    print(f"    {_c(C.BOLD, '2')}  Leave settings as-is and disconnect")
     print()
 
     while True:
@@ -431,20 +545,33 @@ def collect_network_config(cfg: ShelfConfig):
             break
         warn("Please enter 1 or 2.")
 
-    use_dhcp = (choice == "2")
+    if choice == "2":
+        info("No changes requested.")
+        return False
+
+    # ── User wants to change settings ─────────────────────────────────────────
+    print()
+    print("  How should the IOMs be configured?")
+    print(f"    {_c(C.BOLD, '1')}  Static IP addresses")
+    print(f"    {_c(C.BOLD, '2')}  DHCP")
     print()
 
-    cfg.password = prompt_password()
+    while True:
+        mode = prompt("Select mode [1/2]")
+        if mode in ("1", "2"):
+            break
+        warn("Please enter 1 or 2.")
+
+    use_dhcp = (mode == "2")
+    print()
 
     if use_dhcp:
         cfg.iom1 = IOMConfig("IOM1", dhcp=True)
         cfg.iom2 = IOMConfig("IOM2", dhcp=True)
-        print()
         ok("Both IOMs will be set to DHCP.")
-        return
+        return True
 
     # Static — IOM1
-    print()
     info(f"Static network details for {_c(C.BOLD, 'IOM1')}:")
     iom1_ip = prompt_ip("  IOM1 IP address ")
     iom1_gw = prompt_ip("  IOM1 Gateway    ")
@@ -464,84 +591,49 @@ def collect_network_config(cfg: ShelfConfig):
         iom2_nm = prompt_ip("  IOM2 Subnet Mask")
 
     cfg.iom2 = IOMConfig("IOM2", dhcp=False, ip=iom2_ip, gateway=iom2_gw, netmask=iom2_nm)
+    return True
 
 
-# ── Step 4: Apply configuration via Redfish ───────────────────────────────────
+# ── Step 5a: Apply configuration via Redfish ──────────────────────────────────
 def apply_configuration(cfg: ShelfConfig) -> bool:
-    rule("Step 4 of 6 -- Applying Configuration via Redfish API")
+    rule("Step 5 of 5 -- Applying Configuration via Redfish API")
 
     info("Sending Redfish PATCH requests over serial loopback (127.0.0.1)...")
     print()
 
-    results  = []
+    results = []
-    all_ok   = True
+    all_ok  = True
     for iom_cfg in [cfg.iom1, cfg.iom2]:
-        success, message = _patch_iom(cfg.password, iom_cfg)
+        if iom_cfg.dhcp:
-        results.append([iom_cfg.iom,
+            payload = {"DHCPv4": {"DHCPEnabled": True}}
-                         f"{_c(C.GRN, 'OK')}" if success else f"{_c(C.RED, 'FAIL')}",
+        else:
-                         message])
+            payload = {
-        if not success:
+                "DHCPv4": {"DHCPEnabled": False},
+                "IPv4StaticAddresses": [{
+                    "Address":    iom_cfg.ip,
+                    "Gateway":    iom_cfg.gateway,
+                    "SubnetMask": iom_cfg.netmask,
+                }],
+            }
+
+        path = f"/redfish/v1/Managers/{iom_cfg.iom}/EthernetInterfaces/1"
+        success, data = _redfish_request(cfg.password, "PATCH", path, payload)
+
+        if success:
+            mode = "DHCP" if iom_cfg.dhcp else f"Static {iom_cfg.ip}"
+            results.append([iom_cfg.iom, _c(C.GRN, "OK"), f"Configured: {mode}"])
+        else:
+            results.append([iom_cfg.iom, _c(C.RED, "FAIL"), str(data)[:60]])
             all_ok = False
 
-    draw_table(["IOM", "Result", "Detail"], results, [6, 8, 44])
+    draw_table(["IOM", "Result", "Detail"], results, [6, 8, 50])
     print()
     return all_ok
 
 
-def _patch_iom(password: str, iom: IOMConfig) -> tuple:
+# ── Step 5b: Print applied-settings summary ───────────────────────────────────
-    url = f"https://127.0.0.1/redfish/v1/Managers/{iom.iom}/EthernetInterfaces/1"
+def print_summary(cfg: ShelfConfig, changed: bool):
-
+    rule("Summary")
-    if iom.dhcp:
-        payload = {"DHCPv4": {"DHCPEnabled": True}}
-    else:
-        payload = {
-            "DHCPv4": {"DHCPEnabled": False},
-            "IPv4StaticAddresses": [{
-                "Address":    iom.ip,
-                "Gateway":    iom.gateway,
-                "SubnetMask": iom.netmask,
-            }],
-        }
-
-    data        = json.dumps(payload).encode("utf-8")
-    credentials = b64encode(f"Admin:{password}".encode()).decode()
-    ctx         = ssl.create_default_context()
-    ctx.check_hostname = False
-    ctx.verify_mode    = ssl.CERT_NONE
-
-    req = urllib.request.Request(
-        url,
-        data=data,
-        method="PATCH",
-        headers={
-            "Content-Type":  "application/json",
-            "Authorization": f"Basic {credentials}",
-        },
-    )
-
-    try:
-        with urllib.request.urlopen(req, context=ctx, timeout=10) as resp:
-            if resp.status in (200, 204):
-                mode = "DHCP" if iom.dhcp else f"static {iom.ip}"
-                return True, f"Configured: {mode}"
-            body = resp.read().decode("utf-8", errors="replace")
-            return False, f"HTTP {resp.status}: {body[:80]}"
-
-    except urllib.error.HTTPError as e:
-        body = e.read().decode("utf-8", errors="replace")
-        try:
-            msg = json.loads(body).get("error", {}).get("message", body)
-        except json.JSONDecodeError:
-            msg = body
-        return False, f"HTTP {e.code}: {msg[:80]}"
-
-    except OSError as e:
-        return False, f"Connection error: {e}"
-
-
-# ── Step 5: Print configuration summary ───────────────────────────────────────
-def print_summary(cfg: ShelfConfig):
-    rule("Step 5 of 6 -- Configuration Summary")
 
     def val(iom: IOMConfig, field: str) -> str:
         dhcp_map = {"mode": "DHCP", "ip": "-- (DHCP)", "gateway": "-- (DHCP)", "netmask": "-- (DHCP)"}
@@ -556,39 +648,39 @@ def print_summary(cfg: ShelfConfig):
             ["Gateway",     val(cfg.iom1, "gateway"), val(cfg.iom2, "gateway")],
             ["Subnet Mask", val(cfg.iom1, "netmask"), val(cfg.iom2, "netmask")],
             ["Serial Port", cfg.device,               cfg.device],
+            ["Changes",     "Yes" if changed else "None", ""],
         ],
         [12, 22, 22],
     )
 
-    print()
+    if changed:
-    draw_box([
+        print()
-        f"{_c(C.YEL, 'IMPORTANT -- Per the ES24N Service Guide:')}",
+        draw_box([
-        "",
+            f"{_c(C.YEL, 'IMPORTANT -- Per the ES24N Service Guide:')}",
-        "Remove the serial cable ONLY after verifying each",
+            "",
-        "expander appears in TrueNAS with matching drives.",
+            "Remove the serial cable ONLY after verifying each",
-        "",
+            "expander appears in TrueNAS with matching drives.",
-        "TrueNAS > System Settings > Enclosure >",
+            "",
-        "NVMe-oF Expansion Shelves",
+            "TrueNAS > System Settings > Enclosure >",
-    ], colour=C.YEL)
+            "NVMe-oF Expansion Shelves",
+        ], colour=C.YEL)
     print()
 
 
-# ── Step 6: Close serial connection ───────────────────────────────────────────
+# ── Disconnect ────────────────────────────────────────────────────────────────
 def close_serial_connection(ser: SerialPort, device: str):
-    rule("Step 6 of 6 -- Close Serial Connection")
-
     if ser and ser.is_open:
         ser.close()
         ok(f"Serial port {device} closed.")
 
     print()
     prompt("Disconnect the serial cable, then press Enter to continue")
-    ok("Serial cable disconnected. Shelf configuration complete.")
+    ok("Serial cable disconnected. Shelf complete.")
 
 
 # ── Full shelf configuration cycle ────────────────────────────────────────────
 def configure_shelf() -> bool:
-    """Run one complete shelf cycle. Returns True if user wants another."""
+    """Run one complete shelf cycle. Returns True if user wants another shelf."""
     banner()
     cfg = ShelfConfig()
 
@@ -600,32 +692,40 @@ def configure_shelf() -> bool:
         return True
     cfg.device = device
 
-    # 2 — Open serial port
+    # 2 — Open serial port & wake IOM console
     ser = open_serial_connection(device)
     if not ser:
         error("Could not open serial port. Returning to main menu.")
         time.sleep(2)
         return True
 
-    # 3 — Collect settings
+    # Password needed before any Redfish calls
-    collect_network_config(cfg)
-
-    # 4 — Confirm & apply
-    print()
-    rule("Ready to Apply")
-    info("Redfish PATCH requests will be sent to each IOM via 127.0.0.1")
-    info("using the active serial session as the communication path.")
     print()
+    cfg.password = prompt_password()
 
-    if prompt_yn("Apply configuration now?", default=True):
+    # 3 — Fetch & display current settings
-        apply_configuration(cfg)
+    fetch_current_config(cfg)
-    else:
-        warn("Configuration skipped — no changes were made.")
 
-    # 5 — Summary & reminder
+    # 4 — Ask user: change or leave alone?
-    print_summary(cfg)
+    apply_changes = collect_network_config(cfg)
 
-    # 6 — Close serial port
+    # 5 — Apply if requested
+    changed = False
+    if apply_changes:
+        print()
+        rule("Ready to Apply")
+        info("Redfish PATCH requests will be sent to each IOM via 127.0.0.1")
+        print()
+        if prompt_yn("Apply configuration now?", default=True):
+            apply_configuration(cfg)
+            changed = True
+        else:
+            warn("Configuration skipped — no changes were made.")
+
+    # Summary
+    print_summary(cfg, changed)
+
+    # Disconnect
     close_serial_connection(ser, device)
 
     print()
@@ -670,4 +770,4 @@ if __name__ == "__main__":
     except KeyboardInterrupt:
         print()
         warn("Interrupted. Exiting.")
-        sys.exit(0)
+        sys.exit(0)