github.com/ryanslade/nomad@v0.2.4-0.20160128061903-fc95782f2089/client/getter/getter.go (about)

     1  package getter
     2  
     3  import (
     4  	"fmt"
     5  	"log"
     6  	"net/url"
     7  	"path"
     8  	"path/filepath"
     9  	"runtime"
    10  	"strings"
    11  	"syscall"
    12  
    13  	gg "github.com/hashicorp/go-getter"
    14  )
    15  
    16  func GetArtifact(destDir, source, checksum string, logger *log.Logger) (string, error) {
    17  	if source == "" {
    18  		return "", fmt.Errorf("Source url is empty in Artifact Getter")
    19  	}
    20  	u, err := url.Parse(source)
    21  	if err != nil {
    22  		return "", err
    23  	}
    24  
    25  	// if checksum is seperate, apply to source
    26  	if checksum != "" {
    27  		source = strings.Join([]string{source, fmt.Sprintf("checksum=%s", checksum)}, "?")
    28  		logger.Printf("[DEBUG] client.getter: Applying checksum to Artifact Source URL, new url: %s", source)
    29  	}
    30  
    31  	artifactFile := filepath.Join(destDir, path.Base(u.Path))
    32  	if err := gg.GetFile(artifactFile, source); err != nil {
    33  		return "", fmt.Errorf("Error downloading artifact: %s", err)
    34  	}
    35  
    36  	// Add execution permissions to the newly downloaded artifact
    37  	if runtime.GOOS != "windows" {
    38  		if err := syscall.Chmod(artifactFile, 0755); err != nil {
    39  			logger.Printf("[ERR] driver.raw_exec: Error making artifact executable: %s", err)
    40  		}
    41  	}
    42  	return artifactFile, nil
    43  }