feat: add vector integration

This currently is missing a few features:

- global sinks
- logrotation

But works fairly well otherwise.

plugins/common/docker.go

@@ -20,6 +20,31 @@ func ContainerIsRunning(containerID string) bool {
 	return strings.TrimSpace(string(b[:])) == "true"
 }
 
+// ContainerStart runs 'docker container start' against an existing container
+// whether that container is running or not
+func ContainerStart(containerID string) bool {
+	cmd := sh.Command(DockerBin(), "container", "start", containerID)
+	cmd.Stdout = nil
+	cmd.Stderr = nil
+	if err := cmd.Run(); err != nil {
+		return false
+	}
+
+	return true
+}
+
+// ContainerExists checks to see if a container exists
+func ContainerExists(containerID string) bool {
+	cmd := sh.Command(DockerBin(), "container", "inspect", containerID)
+	cmd.Stdout = nil
+	cmd.Stderr = nil
+	if err := cmd.Run(); err != nil {
+		return false
+	}
+
+	return true
+}
+
 // CopyFromImage copies a file from named image to destination
 func CopyFromImage(appName string, image string, source string, destination string) error {
 	if !VerifyImage(image) {
@@ -219,6 +244,11 @@ func DockerInspect(containerOrImageID, format string) (output string, err error)
 	return
 }
 
+// DockerInspect runs an inspect command with a given format against a container ID
+func DockerSignal(containerID, signal string) (err error) {
+	return sh.Command(DockerBin(), "kill", fmt.Sprintf("--signal=%s", signal), containerID).Run()
+}
+
 // IsImageHerokuishBased returns true if app image is based on herokuish
 func IsImageHerokuishBased(image string, appName string) bool {
 	output, err := DockerInspect(image, "{{range .Config.Env}}{{if eq . \"USER=herokuishuser\" }}{{println .}}{{end}}{{end}}")

plugins/common/log.go

@@ -1,6 +1,7 @@
 package common
 
 import (
+	"bufio"
 	"fmt"
 	"os"
 	"strings"
@@ -93,6 +94,21 @@ func LogVerboseQuietContainerLogs(containerID string) {
 	}
 }
 
+// LogVerboseQuietContainerLogs is the verbose log formatter for container logs
+func LogVerboseQuietContainerLogsTail(containerID string) {
+	sc := NewShellCmdWithArgs(DockerBin(), "container", "logs", containerID, "--follow", "--tail", "10")
+	stdout, _ := sc.Command.StdoutPipe()
+	sc.Command.Start()
+
+	scanner := bufio.NewScanner(stdout)
+	scanner.Split(bufio.ScanLines)
+	for scanner.Scan() {
+		m := scanner.Text()
+		fmt.Println(m)
+	}
+	sc.Command.Wait()
+}
+
 // LogWarn is the warning log formatter
 func LogWarn(text string) {
 	fmt.Fprintln(os.Stderr, fmt.Sprintf(" !     %s", text))