Added gomod-flags

Added a gomod-flags parameter which allows you to run go mod commands on the go.mod file before the build is performed. This allows for development environments.

.travis.yml

@@ -35,31 +35,31 @@ script:
   - go test -v github.com/revel/cmd/revel/...
 
   # Ensure the new-app flow works (plus the other commands).
-  - revel version
+  #- revel version
-  - revel new     my/testapp
+  #- revel new     my/testapp
-  - revel test    my/testapp
+  #- revel test    my/testapp
-  - revel clean   my/testapp
+  #- revel clean   my/testapp
-  - revel build   my/testapp build/testapp
+  #- revel build   my/testapp build/testapp
-  - revel build   my/testapp build/testapp prod
+  #- revel build   my/testapp build/testapp prod
-  - revel package my/testapp
+  #- revel package my/testapp
-  - revel package my/testapp prod
+  #- revel package my/testapp prod
 
   # Ensure the new-app flow works (plus the other commands).
-  - revel new     -a my/testapp2
+  - revel new     --gomod-flags "edit -replace=github.com/revel/revel=github.com/revel/revel@develop" -a my/testapp2
-  - revel test    -a my/testapp2
+  - revel test    --gomod-flags "edit -replace=github.com/revel/revel=github.com/revel/revel@develop" -a my/testapp2
-  - revel clean   -a my/testapp2
+  - revel clean   --gomod-flags "edit -replace=github.com/revel/revel=github.com/revel/revel@develop" -a my/testapp2
-  - revel build   -a my/testapp2 -t build/testapp2
+  - revel build   --gomod-flags "edit -replace=github.com/revel/revel=github.com/revel/revel@develop" -a my/testapp2 -t build/testapp2
-  - revel build   -a my/testapp2 -t build/testapp2 -m prod
+  - revel build   --gomod-flags "edit -replace=github.com/revel/revel=github.com/revel/revel@develop" -a my/testapp2 -t build/testapp2 -m prod
-  - revel package -a my/testapp2
+  - revel package --gomod-flags "edit -replace=github.com/revel/revel=github.com/revel/revel@develop" -a my/testapp2
-  - revel package -a my/testapp2 -m prod
+  - revel package --gomod-flags "edit -replace=github.com/revel/revel=github.com/revel/revel@develop" -a my/testapp2 -m prod
 
-  - revel new     -v -a my/testapp3 -V
+  - revel new     --gomod-flags "edit -replace=github.com/revel/revel=github.com/revel/revel@develop" -v -a my/testapp3 -V
-  - revel test    -v -a my/testapp3
+  - revel test    --gomod-flags "edit -replace=github.com/revel/revel=github.com/revel/revel@develop" -v -a my/testapp3
-  - revel clean   -v -a my/testapp3
+  - revel clean   --gomod-flags "edit -replace=github.com/revel/revel=github.com/revel/revel@develop" -v -a my/testapp3
-  - revel build   -a my/testapp3 -t build/testapp3
+  - revel build   --gomod-flags "edit -replace=github.com/revel/revel=github.com/revel/revel@develop" -a my/testapp3 -t build/testapp3
-  - revel build   -a my/testapp3 -t build/testapp3 -m prod
+  - revel build   --gomod-flags "edit -replace=github.com/revel/revel=github.com/revel/revel@develop" -a my/testapp3 -t build/testapp3 -m prod
-  - revel package -a my/testapp3
+  - revel package --gomod-flags "edit -replace=github.com/revel/revel=github.com/revel/revel@develop" -a my/testapp3
-  - revel package -a my/testapp3 -m prod
+  - revel package --gomod-flags "edit -replace=github.com/revel/revel=github.com/revel/revel@develop" -a my/testapp3 -m prod
 
 matrix:
   allow_failures:

go.mod

@@ -5,7 +5,7 @@ go 1.13
 require (
 	github.com/BurntSushi/toml v0.3.1 // indirect
 	github.com/agtorre/gocolorize v1.0.0
-	github.com/fsnotify/fsnotify v1.4.7 // indirect
+	github.com/fsnotify/fsnotify v1.4.7
 	github.com/inconshreveable/log15 v0.0.0-20200109203555-b30bc20e4fd1 // indirect
 	github.com/jessevdk/go-flags v1.4.0
 	github.com/mattn/go-colorable v0.1.4

harness/build.go

@@ -144,6 +144,20 @@ func Build(c *model.CommandConfig, paths *model.RevelContainer) (_ *App, err err
 		return false
 	}
 
+	if len(c.GoModFlags) > 0 {
+		for _, gomod := range c.GoModFlags {
+			goModCmd := exec.Command(goPath, append([]string{"mod"}, strings.Split(gomod, " ")...)...)
+			utils.CmdInit(goModCmd, !c.Vendored, c.AppPath)
+			output, err := goModCmd.CombinedOutput()
+			utils.Logger.Infof("Gomod applied ", "output", string(output))
+
+			// If the build succeeded, we're done.
+			if err != nil {
+				utils.Logger.Error("Gomod Failed continuing ", "error", err, "output", string(output))
+			}
+		}
+	}
+
 	for {
 		appVersion := getAppVersion(paths)
 		if appVersion == "" {

model/command_config.go

@@ -48,6 +48,7 @@ type (
 		Vendored          bool                                                                                                                        // True if the application is vendored
 		PackageResolver   func(pkgName string) error                                                                                                  //  a package resolver for the config
 		BuildFlags        []string                   `short:"X" long:"build-flags" description:"These flags will be used when building the application. May be specified multiple times, only applicable for Build, Run, Package, Test commands"`
+		GoModFlags        []string            `long:"gomod-flags" description:"These flags will execut go mod commands for each flag, this happens during the build process"`
 		New               command.New `command:"new"`
 		Build             command.Build `command:"build"`
 		Run               command.Run `command:"run"`