mirror of https://github.com/istio/istio.io.git
115 lines
3.5 KiB
Bash
115 lines
3.5 KiB
Bash
#!/usr/bin/env bash
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# Copyright Istio Authors
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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set -e
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set -u
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set -o pipefail
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source ${REPO_ROOT}/content/en/docs/tasks/traffic-management/traffic-shifting/snips.sh
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# setup bookinfo & sleep pods
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kubectl label namespace default istio-injection=enabled --overwrite || true
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kubectl apply -f samples/bookinfo/platform/kube/bookinfo.yaml
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kubectl apply -f samples/bookinfo/networking/bookinfo-gateway.yaml
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kubectl apply -f samples/bookinfo/networking/destination-rule-all.yaml
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kubectl apply -f samples/sleep/sleep.yaml
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for deploy in "productpage-v1" "details-v1" "ratings-v1" "reviews-v1" "reviews-v2" "reviews-v3" "sleep"; do
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if ! kubectl rollout status deployment "$deploy" --timeout 5m; then
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echo "$deploy deployment rollout status check failed"
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exit 1
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fi
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done
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# Verification utils
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SLEEP_POD=$(kubectl get pod -l app=sleep -n default -o 'jsonpath={.items..metadata.name}')
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INGRESS_URL="http://istio-ingressgateway.istio-system"
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# reviews_v3_traffic_percentage
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# gets the % of productpage requests with reviews from reviews:v3 service
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function reviews_v3_traffic_percentage() {
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set +e
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local total_request_count=100
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local v3_count=0
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local v3_search_string="glyphicon glyphicon-star" # search string present in reviews_v3 response html
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for ((i = 1; i <= total_request_count; i++)); do
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if (kubectl exec "${SLEEP_POD}" -c sleep -n "default" -- curl -s $INGRESS_URL/productpage | grep -q "$v3_search_string"); then
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v3_count=$((v3_count + 1))
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fi
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done
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function is_in_range() {
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local tol=10 #tolerance
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local lower_bound=$(($2 - tol))
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local upper_bound=$(($2 + tol))
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if ((lower_bound < $1 && $1 < upper_bound)); then
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return 0
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fi
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return 1
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}
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declare -a ranges=(0 25 50 75 100)
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for i in "${ranges[@]}"; do
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if is_in_range $v3_count "$i"; then
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return "$i"
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fi
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done
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set -e
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}
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function verify_traffic_shift() {
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reviews_v3_traffic_percentage
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local got=$?
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if ((got != $1)); then
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echo "reviews-v3 traffic split mismatch: expected $1, got $got"
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exit 1
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fi
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}
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# Step 1 configure all traffic to v1
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out=$(snip_config_all_v1 2>&1)
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expected="virtualservice.networking.istio.io/productpage created
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virtualservice.networking.istio.io/reviews created
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virtualservice.networking.istio.io/ratings created
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virtualservice.networking.istio.io/details created"
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_verify_same "$out" "$expected" "snip_config_all_v1"
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# Step 2: verify no rating stars visible, (reviews-v3 traffic=0%)
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verify_traffic_shift 0
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# Step 3: switch 50% traffic to v3
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out=$(snip_config_50_v3 2>&1)
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_verify_same "$out" "virtualservice.networking.istio.io/reviews configured" "snip_config_50_v3"
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istioctl experimental wait --for=distribution VirtualService reviews.default
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# Step 4: Confirm the rule was replaced
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out=$(snip_verify_config_50_v3 2>&1)
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_verify_contains "$out" "subset: v3" "snip_verify_config_50_v3"
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# Step 5: verify rating stars visible 50% of the time
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verify_traffic_shift 50
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# Step 6: route 100% traffic to v3
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snip_config_100_v3
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verify_traffic_shift 100
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