Merge pull request #635 from alebedev87/blueprint-pool-size-0-lower-bound

NE-1790: Enable setting zero pool size for blueprint routes via environment variable

Author: openshift-merge-bot[bot]

pkg/cmd/infra/router/template.go

@@ -181,7 +181,7 @@ func (o *TemplateRouter) Bind(flag *pflag.FlagSet) {
 	flag.DurationVar(&o.CommitInterval, "commit-interval", getIntervalFromEnv("COMMIT_INTERVAL", defaultCommitInterval), "Controls how often to commit (to the actual config) all the changes made using the router specific dynamic configuration manager.")
 	flag.StringVar(&o.BlueprintRouteNamespace, "blueprint-route-namespace", env("ROUTER_BLUEPRINT_ROUTE_NAMESPACE", ""), "Specifies the namespace which contains the routes that serve as blueprints for the dynamic configuration manager.")
 	flag.StringVar(&o.BlueprintRouteLabelSelector, "blueprint-route-labels", env("ROUTER_BLUEPRINT_ROUTE_LABELS", ""), "A label selector to apply to the routes in the blueprint route namespace. These selected routes will serve as blueprints for the dynamic dynamic configuration manager.")
-	flag.IntVar(&o.BlueprintRoutePoolSize, "blueprint-route-pool-size", int(envInt("ROUTER_BLUEPRINT_ROUTE_POOL_SIZE", 10, 1)), "Specifies the size of the pre-allocated pool for each route blueprint managed by the router specific dynamic configuration manager. This can be overriden by an annotation router.openshift.io/pool-size on an individual route.")
+	flag.IntVar(&o.BlueprintRoutePoolSize, "blueprint-route-pool-size", int(envInt("ROUTER_BLUEPRINT_ROUTE_POOL_SIZE", 10, 0)), "Specifies the size of the pre-allocated pool for each route blueprint managed by the router specific dynamic configuration manager. This can be overriden by an annotation router.openshift.io/pool-size on an individual route.")
 	flag.IntVar(&o.MaxDynamicServers, "max-dynamic-servers", int(envInt("ROUTER_MAX_DYNAMIC_SERVERS", 5, 1)), "Specifies the maximum number of dynamic servers added to a route for use by the router specific dynamic configuration manager.")
 	flag.StringVar(&o.CaptureHTTPRequestHeadersString, "capture-http-request-headers", env("ROUTER_CAPTURE_HTTP_REQUEST_HEADERS", ""), "A comma-delimited list of HTTP request header names and maximum header value lengths that should be captured for logging. Each item must have the following form: name:maxLength")
 	flag.StringVar(&o.CaptureHTTPResponseHeadersString, "capture-http-response-headers", env("ROUTER_CAPTURE_HTTP_RESPONSE_HEADERS", ""), "A comma-delimited list of HTTP response header names and maximum header value lengths that should be captured for logging. Each item must have the following form: name:maxLength")