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new c26c1ee Add a little circuit breaker example
c26c1ee is described below
commit c26c1eea12bbedad9751cc57c73ae8c2cc07fc79
Author: Claus Ibsen <claus.ib...@gmail.com>
AuthorDate: Tue Nov 1 11:52:57 2022 +0100
Add a little circuit breaker example
---
jbang/circuit-breaker/README.adoc | 68 +++++++++++++++++++++++++++++++++++++++
jbang/circuit-breaker/mycb.yaml | 26 +++++++++++++++
2 files changed, 94 insertions(+)
diff --git a/jbang/circuit-breaker/README.adoc
b/jbang/circuit-breaker/README.adoc
new file mode 100644
index 0000000..4399b67
--- /dev/null
+++ b/jbang/circuit-breaker/README.adoc
@@ -0,0 +1,68 @@
+== Circuit Breaker
+
+This example shows how Camel JBang can use ciruit breaker EIP.
+
+=== Install JBang
+
+First install JBang according to https://www.jbang.dev
+
+When JBang is installed then you should be able to run from a shell:
+
+[source,sh]
+----
+$ jbang --version
+----
+
+This will output the version of JBang.
+
+To run this example you can either install Camel on JBang via:
+
+[source,sh]
+----
+$ jbang app install camel@apache/camel
+----
+
+Which allows to run CamelJBang with `camel` as shown below.
+
+=== How to run
+
+Then you can run this example using:
+
+[source,sh]
+----
+$ camel run *
+----
+
+Or run with JBang using the longer command line (without installing camel as
app in JBang):
+
+[source,sh]
+----
+$ jbang camel@apache/camel run *
+----
+
+While the Camel integration is running, then from another terminal type:
+
+[source,sh]
+----
+$ camel get circuit-breaker
+----
+
+Which then output the state of the circuit breaker. You can run this command
with `watch` and see
+how the state of the circuit breaker changes from closed to open due to many
failures.
+
+[source,sh]
+----
+$ watch camel get circuit-breaker
+----
+
+
+
+=== Help and contributions
+
+If you hit any problem using Camel or have some feedback, then please
+https://camel.apache.org/community/support/[let us know].
+
+We also love contributors, so
+https://camel.apache.org/community/contributing/[get involved] :-)
+
+The Camel riders!
diff --git a/jbang/circuit-breaker/mycb.yaml b/jbang/circuit-breaker/mycb.yaml
new file mode 100644
index 0000000..0dc1766
--- /dev/null
+++ b/jbang/circuit-breaker/mycb.yaml
@@ -0,0 +1,26 @@
+- route:
+ from:
+ uri: timer:yaml
+ steps:
+ - setBody:
+ expression:
+ constant:
+ expression: Hello Camel from yaml
+ - circuitBreaker:
+ steps:
+ - filter:
+ expression:
+ simple:
+ expression: ${random(10)} > 2
+ steps:
+ - throwException:
+ message: Forced error
+ exceptionType: java.lang.IllegalArgumentException
+ resilience4jConfiguration:
+ minimumNumberOfCalls: 10
+ failureRateThreshold: 50
+ waitDurationInOpenState: 20
+ - log:
+ message: "${body} (CircuitBreaker is open:
${exchangeProperty.CamelCircuitBreakerResponseShortCircuited})"
+ parameters:
+ period: '1000'
