seutil time out fix

Summary:
Endpoint seutil which call weutil sup sometimes time out due to
the fact that it takes quite some time for flashrom to read the content
of the flash. Therefore, we are caching this content and changing the
rest-api logic to read from it which would solve that issue

Test Plan: See this paste P144881106

Reviewed By: mikechoifb

fbshipit-source-id: de1f6b40b4

meta-facebook/meta-yamp/recipes-utils/openbmc-utils/files/sup_eeprom.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+#
+# Copyright 2020-present Facebook. All Rights Reserved.
+#
+# This program file is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the
+# Free Software Foundation; version 2 of the License.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+# for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program in a file named COPYING; if not, write to the
+# Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor,
+# Boston, MA 02110-1301 USA
+#
+
+weutil SUP > /tmp/sup_weutil.txt

meta-facebook/meta-yamp/recipes-utils/openbmc-utils/openbmc-utils_%.bbappend

@@ -38,6 +38,7 @@ SRC_URI += "file://bios_util.sh \
             file://scdinfo \
             file://psu_show_tech.py \
             file://show_tech.py \
+            file://sup_eeprom.sh \
            "
 
 OPENBMC_UTILS_FILES += " \
@@ -85,13 +86,16 @@ do_install_board() {
     # derivied from the correct MAC address.
     install -m 755 eth0_mac_fixup.sh ${D}${sysconfdir}/init.d/eth0_mac_fixup.sh
     update-rc.d -r ${D} eth0_mac_fixup.sh start 2 2 3 4 5 .
-
+    
     install -m 755 setup_board.sh ${D}${sysconfdir}/init.d/setup_board.sh
     update-rc.d -r ${D} setup_board.sh start 80 S .
 
     install -m 755 power-on.sh ${D}${sysconfdir}/init.d/power-on.sh
     update-rc.d -r ${D} power-on.sh start 85 S .
 
+    install -m 755 sup_eeprom.sh ${D}${sysconfdir}/init.d/sup_eeprom.sh
+    update-rc.d -r ${D} sup_eeprom.sh start 90 2 3 4 5 .
+
     install -m 0755 ${WORKDIR}/rc.local ${D}${sysconfdir}/init.d/rc.local
     update-rc.d -r ${D} rc.local start 99 2 3 4 5 .
 

meta-facebook/meta-yamp/recipes-utils/rest-api/files/rest_seutil.py

@@ -18,32 +18,31 @@
 # Boston, MA 02110-1301 USA
 #
 
-import subprocess
+import os
 from typing import Dict
 
-from rest_utils import DEFAULT_TIMEOUT_SEC
+
+PATH = "/tmp/sup_weutil.txt"
 
 
 # Handler for seutil resource endpoint
 def get_seutil() -> Dict:
     return {"Information": get_seutil_data(), "Actions": [], "Resources": []}
 
 
-def _parse_seutil_data(data) -> Dict:
-    result = {}
-    # need to remove the first info line from seutil
-    adata = data.split("\n", 1)
-    for sdata in adata[1].split("\n"):
-        tdata = sdata.split(":", 1)
-        if len(tdata) < 2:
-            continue
-        result[tdata[0].strip()] = tdata[1].strip()
-    return result
-
-
 def get_seutil_data() -> Dict:
-    cmd = ["/usr/local/bin/seutil"]
-    proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
-    data, _ = proc.communicate(timeout=DEFAULT_TIMEOUT_SEC)
-    data = data.decode(errors="ignore")
-    return _parse_seutil_data(data)
+    result = {}
+    if not os.path.exists(PATH):
+        raise Exception("Path for sup_weutil doesn't exist")
+    with open(PATH, "r") as fp:
+        # start reading after lines 8
+        lines = fp.readlines()[8:]
+        if lines:
+            for line in lines:
+                tdata = line.split(":", 1)
+                if len(tdata) < 2:
+                    continue
+                result[tdata[0].strip()] = tdata[1].strip()
+        else:
+            raise Exception("sup_weutil file is empty")
+        return result