[docker-platform-monitor]: Add LED control daemon and plugin for x86_64-arista_7050_qx32 platform (#691)

* Add files for building ledd package; add ledd to docker-platform-monitor; Control platform monitor docker using supervisord

* Add sonic-platform-daemons submodule

* Rename ledd.mk -> sonic-ledd.mk

* Add led_control.py plugin for x86_64-arista_7050_qx32 platform

* Rename Dockerfile -> Dockerfile.j2

* Fix build

* Remove blank line

.gitignore

@@ -34,6 +34,7 @@ dockers/docker-fpm-gobgp/Dockerfile
 dockers/docker-fpm-quagga/Dockerfile
 dockers/docker-lldp-sv2/Dockerfile
 dockers/docker-orchagent/Dockerfile
+dockers/docker-platform-monitor/Dockerfile
 dockers/docker-snmp-sv2/Dockerfile
 dockers/docker-teamd/Dockerfile
 platform/*/docker-syncd-*/Dockerfile

.gitmodules

@@ -60,3 +60,6 @@
 	path = src/SAI
 	url = https://github.com/opencomputeproject/SAI
 	branch = v0.9.4
+[submodule "src/sonic-platform-daemons"]
+	path = src/sonic-platform-daemons
+	url = https://github.com/Azure/sonic-platform-daemons

device/arista/x86_64-arista_7050_qx32/plugins/led_control.py

@@ -0,0 +1,80 @@
+#!/usr/bin/env python
+#
+# led_control.py
+# 
+# Platform-specific LED control functionality for SONiC
+#
+
+try:
+    from sonic_led.led_control_base import LedControlBase
+except ImportError, e:
+    raise ImportError (str(e) + " - required module not found")
+
+
+class LedControl(LedControlBase):
+    """Platform specific LED control class"""
+
+    SONIC_PORT_NAME_PREFIX = "Ethernet"
+
+    LED_SYSFS_PATH_BREAKOUT_CAPABLE = "/sys/class/leds/qsfp{0}_{1}/brightness"
+    LED_SYSFS_PATH_NO_BREAKOUT = "/sys/class/leds/qsfp{0}/brightness"
+
+    QSFP_BREAKOUT_START_IDX = 1
+    QSFP_BREAKOUT_END_IDX = 24
+    QSFP_NO_BREAKOUT_START_IDX = 25
+    QSFP_NO_BREAKOUT_END_IDX = 32
+
+    LED_COLOR_OFF = 0
+    LED_COLOR_GREEN = 1
+    LED_COLOR_YELLOW = 2
+
+    # Helper method to map SONiC port name to Arista QSFP index
+    def _port_name_to_qsfp_index(self, port_name):
+        # Strip "Ethernet" off port name
+        if not port_name.startswith(self.SONIC_PORT_NAME_PREFIX):
+            return -1
+
+        sonic_port_num = int(port_name[len(self.SONIC_PORT_NAME_PREFIX):])
+
+        # SONiC port nums are 0-based and increment by 4
+        # Arista QSFP indices are 1-based and increment by 1
+        return ((sonic_port_num/4) + 1)
+
+    # Concrete implementation of port_link_state_change() method
+    def port_link_state_change(self, port, state):
+        qsfp_index = self._port_name_to_qsfp_index(port)
+        
+        # Ignore invalid QSFP indices
+        if qsfp_index <= 0:
+            return
+
+        # QSFP indices 1-24 are breakout-capable and have four LEDs,
+        # whereas indices 25-32 are not breakout-capable, and only have one
+        if qsfp_index <= self.QSFP_BREAKOUT_END_IDX:
+            led_sysfs_path = self.LED_SYSFS_PATH_BREAKOUT_CAPABLE.format(qsfp_index, 1)
+        else:
+            led_sysfs_path = self.LED_SYSFS_PATH_NO_BREAKOUT.format(qsfp_index)
+
+        led_file = open(led_sysfs_path, "w")
+
+        if state == "up":
+            led_file.write("%d" % self.LED_COLOR_GREEN)
+        else:
+            led_file.write("%d" % self.LED_COLOR_OFF)
+
+        led_file.close()
+
+    # Constructor
+    def __init__(self):
+        # Initialize: Turn all front panel QSFP LEDs off
+        for qsfp_index in range(self.QSFP_BREAKOUT_START_IDX, self.QSFP_BREAKOUT_END_IDX + 1):
+            for lane in range(1, 5):
+                led_sysfs_path = self.LED_SYSFS_PATH_BREAKOUT_CAPABLE.format(qsfp_index, lane)
+                with open(led_sysfs_path, 'w') as led_file:
+                    led_file.write("%d" % self.LED_COLOR_OFF)
+
+        for qsfp_index in range(self.QSFP_NO_BREAKOUT_START_IDX, self.QSFP_NO_BREAKOUT_END_IDX + 1):
+            led_sysfs_path = self.LED_SYSFS_PATH_NO_BREAKOUT.format(qsfp_index)
+            with open(led_sysfs_path, 'w') as led_file:
+                led_file.write("%d" % self.LED_COLOR_OFF)
+

dockers/docker-platform-monitor/Dockerfile

@@ -1,18 +0,0 @@
-FROM docker-config-engine
-
-## Make apt-get non-interactive
-ENV DEBIAN_FRONTEND=noninteractive
-
-RUN apt-get update
-
-RUN apt-get install -y sensord
-
-## Clean up
-RUN apt-get clean -y; apt-get autoclean -y; apt-get autoremove -y
-RUN rm -rf /debs
-
-COPY ["start.sh", "lm-sensors.sh", "/usr/bin/"]
-COPY ["supervisord.conf", "/etc/supervisor/conf.d/"]
-
-ENTRYPOINT ["/usr/bin/supervisord"]
-

dockers/docker-platform-monitor/Dockerfile.j2

@@ -0,0 +1,61 @@
+FROM docker-config-engine
+
+# Make apt-get non-interactive
+ENV DEBIAN_FRONTEND=noninteractive
+
+# Update apt's package index files
+RUN apt-get update
+
+RUN apt-get install -y python-pip sensord
+
+{% if docker_platform_monitor_debs.strip() %}
+# Copy built Debian packages
+COPY \
+{% for deb in docker_platform_monitor_debs.split(' ') -%}
+debs/{{ deb }}{{' '}}
+{%- endfor -%}
+debs/
+{%- endif %}
+
+{% if docker_platform_monitor_debs.strip() %}
+# Install built Debian packages
+RUN dpkg -i \
+{% for deb in docker_platform_monitor_debs.split(' ') -%}
+debs/{{ deb }}{{' '}}
+{%- endfor %}
+{%- endif %}
+
+{% if docker_platform_monitor_whls.strip() %}
+# Copy built Python wheels
+COPY \
+{% for whl in docker_platform_monitor_whls.split(' ') -%}
+python-wheels/{{ whl }}{{' '}}
+{%- endfor -%}
+python-wheels/
+{%- endif %}
+
+{% if docker_platform_monitor_whls.strip() %}
+# Install built Python wheels
+RUN pip install \
+{% for whl in docker_platform_monitor_whls.split(' ') -%}
+python-wheels/{{ whl }}{{' '}}
+{%- endfor %}
+{%- endif %}
+
+COPY python-wheels /python-wheels
+
+# Install Python SwSS SDK (dependency of sonic-ledd)
+RUN pip install /python-wheels/swsssdk-2.0.1-py2-none-any.whl
+
+# Clean up
+RUN apt-get remove -y python-pip
+RUN apt-get clean -y
+RUN apt-get autoclean -y
+RUN apt-get autoremove -y
+RUN rm -rf /debs /python-wheels ~/.cache
+
+COPY ["start.sh", "lm-sensors.sh", "/usr/bin/"]
+COPY ["supervisord.conf", "/etc/supervisor/conf.d/"]
+
+ENTRYPOINT ["/usr/bin/supervisord"]
+

dockers/docker-platform-monitor/start.sh

@@ -12,4 +12,5 @@ rm -f /var/run/rsyslogd.pid
 
 supervisorctl start rsyslogd
 supervisorctl start lm-sensors
+supervisorctl start ledd
 

dockers/docker-platform-monitor/supervisord.conf

@@ -27,3 +27,10 @@ autorestart=false
 stdout_logfile=syslog
 stderr_logfile=syslog
 
+[program:ledd]
+command=/usr/bin/ledd
+priority=6
+autostart=false
+stdout_logfile=syslog
+stderr_logfile=syslog
+

rules/docker-platform-monitor.mk

@@ -1,10 +1,11 @@
-# docker platform monitor image
+# Docker image for SONiC platform monitoring tools
 
 DOCKER_PLATFORM_MONITOR = docker-platform-monitor.gz
 $(DOCKER_PLATFORM_MONITOR)_PATH = $(DOCKERS_PATH)/docker-platform-monitor
+$(DOCKER_PLATFORM_MONITOR)_DEPENDS += $(SONIC_LEDD)
 $(DOCKER_PLATFORM_MONITOR)_LOAD_DOCKERS = $(DOCKER_CONFIG_ENGINE)
 
-SONIC_SIMPLE_DOCKER_IMAGES += $(DOCKER_PLATFORM_MONITOR)
+SONIC_DOCKER_IMAGES += $(DOCKER_PLATFORM_MONITOR)
 SONIC_INSTALL_DOCKER_IMAGES += $(DOCKER_PLATFORM_MONITOR)
 
 $(DOCKER_PLATFORM_MONITOR)_CONTAINER_NAME = pmon

rules/sonic-ledd.mk

@@ -0,0 +1,5 @@
+# sonic-ledd (SONiC Front-panel LED control daemon) Debian package
+
+SONIC_LEDD = python-sonic-ledd_1.0-1_all.deb
+$(SONIC_LEDD)_SRC_PATH = $(SRC_PATH)/sonic-platform-daemons/sonic-ledd
+SONIC_PYTHON_STDEB_DEBS += $(SONIC_LEDD)

src/sonic-platform-daemons

@@ -0,0 +1 @@
+Subproject commit bd7c310757658396ccfaaf653ede4a931b3d4154