download binary

cmd/main.go

@@ -0,0 +1,66 @@
+package main
+
+import (
+	"context"
+	"encoding/json"
+	"io"
+	"log"
+	"net/http"
+	"os"
+	"os/exec"
+)
+
+func main() {
+	req, err := http.NewRequestWithContext(context.Background(), http.MethodGet, "https://git.mthie.com/api/v1/repos/mthie/vault-action/releases", nil)
+	if err != nil {
+		log.Panicf("error creating download request: %s", err)
+	}
+
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		log.Panicf("error getting download information: %s", err)
+	}
+
+	type releaseInfo []struct {
+		Assets []struct {
+			URL string `json:"browser_download_url"`
+		} `json:"assets"`
+	}
+
+	downloadData := releaseInfo{}
+	if err := json.NewDecoder(resp.Body).Decode(&downloadData); err != nil {
+		log.Panicf("error decoding release information: %s", err)
+	}
+
+	resp.Body.Close()
+
+	if len(downloadData) == 0 || len(downloadData[0].Assets) == 0 {
+		log.Panic("no binary found")
+	}
+
+	req, err = http.NewRequestWithContext(context.Background(), http.MethodGet, downloadData[0].Assets[0].URL, nil)
+	if err != nil {
+		log.Panicf("error creating download request: %s", err)
+	}
+
+	resp, err = http.DefaultClient.Do(req)
+	if err != nil {
+		log.Panicf("error downloading binary: %s", err)
+	}
+	out, err := os.OpenFile("vault", os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0755)
+	if err != nil {
+		log.Panicf("error creating file: %s", err)
+	}
+
+	if _, err = io.Copy(out, resp.Body); err != nil {
+		log.Panicf("error writing download data: %s", err)
+	}
+
+	out.Close()
+	resp.Body.Close()
+
+	cmd := exec.Command("vault")
+	if err := cmd.Run(); err != nil {
+		log.Panicf("error executing: %s", err)
+	}
+}