base: add SNMP module.

Over time, several SNMP device support have been implemented, most (or
all) of them derived from DESY's implementation, including one from
Sheng Peng, Diamond and NSCL/FRIB. By 2013, most of community members
were willing to test NSCL/FRIB's implementation or to switch to it [1].
Advantages by then were:

- no memory leak (opposed to Sheng Peng's implementation)
- easier to work with (compared to original DESY implementation)
- supports SNMP writes (compared to Sheng's)
- depends more heavily on libsnmp (compared to Diamond's implementation)

Nowadays, Sheng Peng's implementation seems not to be developed anymore,
as well as Diamond's. From all forks, NSCL/FRIB's and SLAC's are still
around [2]. Looking through SLAC's repository history, it seems to be
also based on Sheng Peng's module [3], with several changes done
afterwards, mostly for patching bugs and supporting new record types.

Between the two, NSCL/FRIB module [4] (also forked in
slac-epics/epics-snmp [5]) has been preferred over slac-epics/snmp,
since it had more features in the past and the community seems to be
actively using, discussing and contributing to it recently [2].

Overall, record API is the same. For general SNMP-aware devices,
changing from one implementation to the other is a matter of changing
the record DTYP used, paying attention to usage of extra parsing
features in INP/OUT fields and record types used. Therefore, changing
the implementation in the future does have costs, but it should not be
very high.

Co-authored-by: Henrique F. Simoes <[email protected]>

[1]: https://epics.anl.gov/tech-talk/2013/msg00537.php
[2]: https://epics.anl.gov/tech-talk/2024/msg00889.php
[3]: slac-epics/snmp@d82df4e
[4]: https://groups.nscl.msu.edu/controls/files/devSnmp.html
[5]: https://github.com/slac-epics/epics-snmp

CHANGES.md

@@ -19,6 +19,8 @@
   https://github.com/cnpem/epics-in-docker/pull/67
   * This allows to use ZIP files in `RUNTIME_TAR_PACKAGES` and
     `BUILD_TAR_PACKAGES`.
+* base: add SNMP module. by @guirodrigueslima in
+  https://github.com/cnpem/epics-in-docker/pull/67
 
 ## v0.8.1
 

base/.env

@@ -19,6 +19,7 @@ ETHER_IP_VERSION=ether_ip-3-3
 IOCSTATS_VERSION=3.2.0
 IPMICOMM_VERSION=R4.6.0
 PYDEVSUP_VERSION=1.2
+SNMP_VERSION=1.1.0.4
 
 AREA_DETECTOR_VERSION=R3-12-1
 NDSSCPIMEGA_VERSION=1.0.0

base/Dockerfile

@@ -17,6 +17,7 @@ RUN apt update -y && \
         libtiff-dev \
         libusb-1.0-0-dev \
         libxml2-dev \
+        libsnmp-dev \
         libssl-dev \
         re2c \
         unzip \
@@ -58,6 +59,7 @@ ARG ETHER_IP_VERSION
 ARG IOCSTATS_VERSION
 ARG IPMICOMM_VERSION
 ARG PYDEVSUP_VERSION
+ARG SNMP_VERSION
 
 COPY ipmicomm.patch .
 COPY caputlog-waveform-fix.patch .

base/docker-compose.yml

@@ -28,6 +28,7 @@ services:
         IOCSTATS_VERSION: ${IOCSTATS_VERSION}
         IPMICOMM_VERSION: ${IPMICOMM_VERSION}
         PYDEVSUP_VERSION: ${PYDEVSUP_VERSION}
+        SNMP_VERSION: ${SNMP_VERSION}
         AREA_DETECTOR_VERSION: ${AREA_DETECTOR_VERSION}
         NDSSCPIMEGA_VERSION: ${NDSSCPIMEGA_VERSION}
         LIBSSCPIMEGA_VERSION: ${LIBSSCPIMEGA_VERSION}

base/install_modules.sh

@@ -81,3 +81,11 @@ echo PYTHON=python3 >> pyDevSup/configure/CONFIG_SITE
 install_module pyDevSup PYDEVSUP "
 EPICS_BASE
 "
+
+mkdir snmp
+cd snmp
+lnls-get-n-unpack -l https://groups.nscl.msu.edu/controls/files/epics-snmp-$SNMP_VERSION.zip
+cd ..
+install_module -i snmp SNMP "
+EPICS_BASE
+"

base/musl/Dockerfile

@@ -15,6 +15,7 @@ RUN apk add --no-cache \
     make \
     musl-dev \
     ncurses-terminfo \
+    net-snmp-dev \
     patch \
     perl \
     rpcsvc-proto \
@@ -57,6 +58,7 @@ ARG ETHER_IP_VERSION
 ARG IOCSTATS_VERSION
 ARG IPMICOMM_VERSION
 ARG PYDEVSUP_VERSION
+ARG SNMP_VERSION
 
 WORKDIR ${EPICS_MODULES_PATH}
 COPY ipmicomm.patch .

base/musl/docker-compose.yml

@@ -28,3 +28,4 @@ services:
         IOCSTATS_VERSION: ${IOCSTATS_VERSION}
         IPMICOMM_VERSION: ${IPMICOMM_VERSION}
         PYDEVSUP_VERSION: ${PYDEVSUP_VERSION}
+        SNMP_VERSION: ${SNMP_VERSION}