[ssm] Prevent exceptions from breaking the scheduler

grammarly · Mar 29, 2021 · 588e9e9 · 588e9e9
1 parent eaa3cc9
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+### 0.4.4-SNAPSHOT (unreleased)
+
+### 0.4.3 (2021-03-29)
+
+- Prevent exceptions raised in `populate-from-ssm` from breaking the periodic
+  scheduler.
+
 ### 0.4.2 (2020-08-07)
 
 - `:default` field for an option can now be a nullary function that is invoked

diff --git a/build.boot b/build.boot
@@ -1,6 +1,6 @@
 (task-options!
  pom  {:project     'com.grammarly/omniconf
-       :version     "0.4.2"
+       :version     "0.4.3"
        :description "Configuration library for Clojure that favors explicitness"
        :license     {"Apache License, Version 2.0"
                      "http://www.apache.org/licenses/LICENSE-2.0"}

diff --git a/src/omniconf/ssm.clj b/src/omniconf/ssm.clj
@@ -117,7 +117,9 @@
   (populate-from-ssm path)
   (let [poller (or @ssm-poller (reset! ssm-poller (make-scheduled-executor)))]
     (.scheduleAtFixedRate ^ScheduledExecutorService poller
-                          #(populate-from-ssm path true)
+                          #(try (populate-from-ssm path true)
+                                ;; Prevent exceptions from breaking the scheduler.
+                                (catch Exception _))
                           interval-in-seconds interval-in-seconds TimeUnit/SECONDS)))
 
 (defn stop-ssm-poller