feat(Logging): Use telemere lib for logging and observability

README.md

@@ -81,7 +81,7 @@ formatting standardized.
 
 ## Copyright
 
-Copyright © 2019-2024, SixSq SA
+Copyright © 2019-2025, SixSq SA
 
 ## License
 

code/README.md

@@ -57,10 +57,8 @@ See the documentation in the `rpm-container` module.
 Logging
 -------
 
-The service assumes that `clojure.tools.logging` will be used with the
-SLF4J and log4j implementation.  These are included in the
-dependencies.  The test `log4j.properties` file will ignore all
-logging.  Modify this if you want to see the logging while testing.
+The service assumes that `clojure.tools.logging` or  `com.taoensso/telemere`
+will be used.
 
-The containerized server will provide a `log4j.properties` file that
-logs everything to the console (as is typical for containers).
+The containerized server will provide env variables that
+logs info level and above to the console (as is typical for containers).

code/dev-resources/clojure.tools.logging.to-telemere.edn

@@ -0,0 +1 @@
+true

code/dev-resources/taoensso.telemere.rt-min-level.edn

@@ -0,0 +1,4 @@
+{:default :info
+ ;:slf4j   [["*" :debug]
+ ;          ["org.apache.zookeeper.*" :error]]
+ }

code/project.clj

@@ -1,6 +1,6 @@
 (def parent-version "6.8.0")
 (def slf4j-version "2.0.12")
-(def logback-version "1.5.3")
+(def telemere-version "1.0.0-RC2")
 
 (defproject com.sixsq.nuvla/ring
   ; x-release-please-start-version
@@ -43,8 +43,8 @@
    [org.slf4j/log4j-over-slf4j ~slf4j-version]
    [org.slf4j/jul-to-slf4j ~slf4j-version]
    [org.slf4j/jcl-over-slf4j ~slf4j-version]
-   [ch.qos.logback/logback-classic ~logback-version]
-   [ch.qos.logback/logback-core ~logback-version]]
+   [com.taoensso/telemere ~telemere-version]
+   [com.taoensso/telemere-slf4j ~telemere-version]]
 
   :profiles
   {:test    {:source-paths          ["test"]

container/Dockerfile

@@ -15,7 +15,6 @@ LABEL ci.build.number=${CI_BUILD_NUMBER}
 LABEL ci.build.web.url=${CI_BUILD_WEB_URL}
 
 COPY target/dependency/lib /opt/nuvla/server/lib
-COPY src/scripts/log4j.properties /opt/nuvla/server/resources/
 COPY src/scripts/start.sh /opt/nuvla/server/bin/
 RUN chmod 0755 /opt/nuvla/server/bin/start.sh \
     && mkdir -p /opt/nuvla/server/lib.d/
@@ -26,6 +25,8 @@ RUN apk upgrade --update-cache --available && \
     rm -rf /var/cache/apk/*
 
 ENV NUVLA_SERVER_INIT=com.sixsq.nuvla.server.example/init
+ENV CLOJURE_TOOLS_LOGGING_TO_TELEMERE=true
+ENV TAOENSSO_TELEMERE_RT_MIN_LEVEL='{:default :info #_:slf4j   #_[["*" :debug] ["org.apache.zookeeper.*" :error]]}'
 
 EXPOSE 8200