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https://github.com/taigrr/go-selfupdate
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Merge pull request #22 from deinspanjer/feature/example
Example demonstrating how go-selfupdate works
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4
.gitignore
vendored
4
.gitignore
vendored
@ -12,3 +12,7 @@ syntax: glob
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*.log
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public/*
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go-selfupdate
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example/example-server
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example/hello-updater
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example/public/*
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example/deployment/*
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example/public/index.html
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example/public/index.html
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<!DOCTYPE html>
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<title>Hello Updater Example Server</title>
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I serve updates of the hello-updater program!
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69
example/run-example.sh
Executable file
69
example/run-example.sh
Executable file
@ -0,0 +1,69 @@
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#!/bin/bash
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echo "This example will compile the hello-updater application a few times with different version strings and demonstrate go-selfupdate's functionality."
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echo "If the version is 'dev', no update checking will be performed."
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echo "I'm not sure why go-selfupdate doesn't put the files under the <appname> folder since that seems to be required for checking"
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echo
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rm -rf deployment/update deployment/hello* public/hello-updater
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echo "Building example-server"; echo
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go build -o example-server src/example-server/main.go
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echo "Running example server"; echo
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killall example-server
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./example-server &
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read -n 1 -p "Press any key to start." ignored; echo
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echo "Building dev version of hello-updater"; echo
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go build -ldflags="-X main.version=dev" -o hello-updater src/hello-updater/main.go
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echo "Copying it to deployment folder"; echo
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cp hello-updater deployment/
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echo "Running deployment/hello-updater"
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deployment/hello-updater
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read -n 1 -p "Press any key to continue." ignored; echo
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echo; echo "=========="; echo
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for (( minor=0; minor<=2; minor++ )); do
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echo "Building hello-updater with version set to 1.$minor"
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go build -ldflags="-X main.version=1.$minor" -o hello-updater src/hello-updater/main.go
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echo "Running go-update to make update available via example-server"; echo
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go-selfupdate -o public/hello-updater/ hello-updater 1.$minor
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if (( $minor == 0 )); then
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echo "Copying version 1.0 to deployment so it can self-update"; echo
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cp hello-updater deployment/
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cp hello-updater deployment/hello-updater-1.0
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fi
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echo "Running deployment/hello-updater"
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deployment/hello-updater
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read -n 1 -p "Press any key to continue." ignored; echo
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echo; echo "=========="; echo
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done
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echo "Running deployment/hello-updater-1.0 backup copy"
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deployment/hello-updater-1.0
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read -n 1 -p "Press any key to continue." ignored; echo
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echo; echo "=========="; echo
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echo "Building unknown version of hello-updater"; echo
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go build -ldflags="-X main.version=unknown" -o hello-updater src/hello-updater/main.go
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echo "Copying unknown version to deployment so it can self-update"; echo
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cp hello-updater deployment/
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echo "Running deployment/hello-updater"
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deployment/hello-updater
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sleep 5
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echo; echo "Re-running deployment/hello-updater"
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deployment/hello-updater
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sleep 5
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echo; echo
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echo "Shutting down example-server"
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killall example-server
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20
example/src/example-server/main.go
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example/src/example-server/main.go
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package main
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import (
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"log"
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"net/http"
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)
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type logHandler struct {
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handler http.Handler
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}
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func (lh *logHandler) ServeHTTP(rw http.ResponseWriter, r *http.Request) {
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log.Printf("\n\texample-server received request %s\n", r.URL.RequestURI())
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lh.handler.ServeHTTP(rw,r)
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}
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func main() {
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// Simple static webserver with logging:
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log.Fatal(http.ListenAndServe(":8080", &logHandler{handler:http.FileServer(http.Dir("./public"))}))
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}
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24
example/src/hello-updater/main.go
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example/src/hello-updater/main.go
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package main
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import (
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"log"
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"github.com/sanbornm/go-selfupdate/selfupdate"
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)
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var version string
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var updater = &selfupdate.Updater{
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CurrentVersion: version, // Manually update the const, or set it using `go build -ldflags="-X main.VERSION=<newver>" -o hello-updater src/hello-updater/main.go`
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ApiURL: "http://localhost:8080/", // The server hosting `$CmdName/$GOOS-$ARCH.json` which contains the checksum for the binary
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BinURL: "http://localhost:8080/", // The server hosting the zip file containing the binary application which is a fallback for the patch method
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DiffURL: "http://localhost:8080/", // The server hosting the binary patch diff for incremental updates
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Dir: "update/", // The directory created by the app when run which stores the cktime file
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CmdName: "hello-updater", // The app name which is appended to the ApiURL to look for an update
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ForceCheck: true, // For this example, always check for an update unless the version is "dev"
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}
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func main() {
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log.Printf("Hello world I am currently version %v", updater.CurrentVersion)
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updater.BackgroundRun()
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log.Printf("Next run, I should be %v", updater.Info.Version)
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}
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