Canary deployments for fission functions. (#892)

demos/canary-rollback-scenario/cleanup.sh

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+#!/bin/bash
+
+kubectl delete canaryconfig canary-2
+kubectl delete httptrigger route-fail

demos/canary-rollback-scenario/run.sh

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+#!/bin/bash
+
+# this script is useful to demo canary deployment when the latest function starts receiving 100% of the traffic
+
+DEMO_RUN_FAST=1
+ROOT_DIR=$(dirname $0)/..
+. $ROOT_DIR/util.sh
+
+
+desc "Function version-1"
+run "fission function get --name fn1-v6"
+
+desc "Function version-2"
+run "fission function get --name fn1-v7"
+
+desc "Create a route \(HTTP trigger\) the version-1 of the function with weight 100% and version-2 with weight 0%"
+run "fission route create --name route-fail --method GET --url /fail --function fn1-v6 --weight 100 --function fn1-v7 --weight 0"
+
+desc "Create a canary config to gradually increment the weight of version-2 by a step of 20 every 1 minute"
+run "fission canary-config create --name canary-2 --funcN fn1-v7 --funcN-1 fn1-v6 --trigger route-fail --increment-step 30 --increment-interval 30s --failure-threshold 10"
+
+desc "Fire requests to the route"
+run "ab -n 10000 -c 1 http://$FISSION_ROUTER/fail"

demos/canary-successful-scenario/cleanup.sh

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+#!/bin/bash
+
+kubectl delete canaryconfig canary-1
+kubectl delete httptrigger route-hello

demos/canary-successful-scenario/run.sh

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+#!/bin/bash
+
+# this script is useful to demo canary deployment when the latest function starts receiving 100% of the traffic
+
+DEMO_RUN_FAST=1
+ROOT_DIR=$(dirname $0)/..
+. $ROOT_DIR/util.sh
+
+desc "Kubernetes cluster"
+run "kubectl get nodes"
+
+desc "Fission installed"
+run "kubectl --namespace default get deployment"
+
+clear
+
+desc "NodeJS environment pods"
+run "kubectl --namespace fission-function get pod -l environmentName=nodejs"
+
+desc "Function version-1"
+run "fission function get --name fn1-v4"
+
+desc "Function version-2"
+run "fission function get --name fn1-v5"
+
+desc "Create a route \(HTTP trigger\) the version-1 of the function with weight 100% and version-2 with weight 0%"
+run "fission route create --name route-hello --method GET --url /hello --function fn1-v5 --weight 0 --function fn1-v4 --weight 100"
+
+desc "Create a canary config to gradually increment the weight of version-2 by a step of 20 every 1 minute"
+run "fission canary-config create --name canary-1 --funcN fn1-v5 --funcN-1 fn1-v4 --trigger route-hello --increment-step 30 --increment-interval 30s --failure-threshold 10"
+
+desc "Fire requests to the route"
+run "ab -n 10000 -c 1 http://$FISSION_ROUTER/hello"