fix: allow 10 seconds to shutdown, fixing shutdown error (#204)

* Allow 15 seconds to shut down

v2.0.0 and above crashes with message "Error during shutdowncontext deadline exceeded" and exit code 1
upon SIGINT being received.

v1.2.1 seems to be unaffected.

* Add bats test

* Reduce to 10 seconds, define directly

Co-Authored-By: andytson-inviqa <andytson-inviqa@users.noreply.github.com>

* style: gofmt -s

* chore: bump golang to 1.17 and fix golangci

Co-authored-by: andytson-inviqa <andytson-inviqa@users.noreply.github.com>
Co-authored-by: Enrico Stahn <enrico.stahn@gmail.com>

Makefile

@@ -20,7 +20,7 @@ test-coverage-html: ## Create a code coverage report in HTML
 	go tool cover -html .cover/cover.out
 
 test-e2e:
-	bats tests/e2e.bats
+	bats test/e2e.bats
 
 lint: ## Run linters
 	golangci-lint run

README.md

@@ -200,7 +200,7 @@ brew install docker-compose bats-core kaos/shell/bats-assert kaos/shell/bats-sup
 After the components are installed run the E2E tests:
 
 ```bash
-make tests-e2e
+make test-e2e
 ```
 
 ## Contributing

cmd/server.go

@@ -102,7 +102,7 @@ to quickly create a Cobra application.`,
 		<-c
 
 		// Create a deadline to wait for.
-		var wait time.Duration
+		wait := time.Second * 10
 		ctx, cancel := context.WithTimeout(context.Background(), wait)
 		defer cancel()
 		// Doesn't block if no connections, but will otherwise wait

test/e2e.bats

@@ -32,3 +32,8 @@ teardown() {
     assert_output --partial 'phpfpm_up{pool="www",scrape_uri="tcp://phpfpm2:9000/status"} 1'
     assert_output --partial 'phpfpm_up{pool="www",scrape_uri="tcp://phpfpm3:9000/status"} 1'
 }
+
+@test "Should exit cleanly" {
+    run docker-compose -f ./test/docker-compose-e2e.yml stop exporter
+    docker-compose -f ./test/docker-compose-e2e.yml ps exporter | grep -q "Exit 0"
+}