enable users to prepare the flutter engine within docker image without building first.

Dockerfile

@@ -121,4 +121,7 @@ RUN go install -v ./... 2>&1
 
 COPY docker/hover-safe.sh /usr/local/bin/hover-safe.sh
 
+# Prepare engines
+ENV CGO_LDFLAGS="-L~/.cache/hover/engine/linux-release -L~/.cache/hover/engine/linux-debug_unopt -L~/.cache/hover/engine/windows-release -L~/.cache/hover/engine/windows-debug_unopt -L~/.cache/hover/engine/darwin-debug_unopt"
+
 WORKDIR /app

cmd/prepare-engine.go

@@ -0,0 +1,99 @@
+package cmd
+
+import (
+ "os"
+ "runtime"
+
+ "github.com/go-flutter-desktop/hover/internal/build"
+ "github.com/go-flutter-desktop/hover/internal/config"
+ "github.com/go-flutter-desktop/hover/internal/enginecache"
+ "github.com/go-flutter-desktop/hover/internal/log"
+ "github.com/spf13/cobra"
+)
+
+var (
+ prepareCachePath string
+ prepareEngineVersion string
+ prepareReleaseMode bool
+ prepareDebugMode bool
+ prepareProfileMode bool
+ prepareBuildModes []build.Mode
+)
+
+func init() {
+ prepareEngineCmd.PersistentFlags().StringVar(&prepareCachePath, "cache-path", enginecache.DefaultCachePath(), "The path that hover uses to cache dependencies such as the Flutter engine .so/.dll")
+ prepareEngineCmd.PersistentFlags().StringVar(&prepareEngineVersion, "engine-version", config.BuildEngineDefault, "The flutter engine version to use.")
+ prepareEngineCmd.PersistentFlags().BoolVar(&prepareDebugMode, "debug", false, "Prepare the flutter engine for debug mode")
+ prepareEngineCmd.PersistentFlags().BoolVar(&prepareReleaseMode, "release", false, "Prepare the flutter engine for release mode.")
+ prepareEngineCmd.PersistentFlags().BoolVar(&prepareProfileMode, "profile", false, "Prepare the flutter engine for profile mode.")
+ prepareEngineCmd.AddCommand(prepareEngineLinuxCmd)
+ prepareEngineCmd.AddCommand(prepareEngineDarwinCmd)
+ prepareEngineCmd.AddCommand(prepareEngineWindowsCmd)
+ rootCmd.AddCommand(prepareEngineCmd)
+}
+
+var prepareEngineCmd = &cobra.Command{
+ Use: "prepare-engine",
+ Short: "Validates or updates the flutter engine on this machine for a given platform",
+}
+
+var prepareEngineLinuxCmd = &cobra.Command{
+ Use: "linux",
+ Short: "Validates or updates the flutter engine on this machine for a given platform",
+ Run: func(cmd *cobra.Command, args []string) {
+ initPrepareEngineParameters("linux")
+ subcommandPrepare("linux")
+ },
+}
+
+var prepareEngineDarwinCmd = &cobra.Command{
+ Use: "darwin",
+ Short: "Validates or updates the flutter engine on this machine for a given platform",
+ Run: func(cmd *cobra.Command, args []string) {
+ initPrepareEngineParameters("darwin")
+ subcommandPrepare("darwin")
+ },
+}
+
+var prepareEngineWindowsCmd = &cobra.Command{
+ Use: "windows",
+ Short: "Validates or updates the flutter engine on this machine for a given platform",
+ Run: func(cmd *cobra.Command, args []string) {
+ initPrepareEngineParameters("windows")
+ subcommandPrepare("windows")
+ },
+}
+
+func initPrepareEngineParameters(targetOS string) {
+ validatePrepareEngineParameters(targetOS)
+ if prepareDebugMode {
+ prepareBuildModes = append(prepareBuildModes, build.DebugMode)
+ }
+ if prepareReleaseMode {
+ prepareBuildModes = append(prepareBuildModes, build.ReleaseMode)
+ }
+ if prepareProfileMode {
+ prepareBuildModes = append(prepareBuildModes, build.ProfileMode)
+ }
+}
+
+func validatePrepareEngineParameters(targetOS string) {
+ if !prepareDebugMode && !prepareReleaseMode && !prepareProfileMode {
+ log.Errorf("No target mode set. Please select exactly one from: debug, profile, release.")
+ os.Exit(1)
+ }
+ if (prepareDebugMode && prepareReleaseMode) || (prepareDebugMode && prepareProfileMode) || (prepareReleaseMode && prepareProfileMode) {
+ log.Errorf("Multiple target modes set. Please select exactly one from: debug, profile, release.")
+ os.Exit(1)
+ }
+ if targetOS == "darwin" && runtime.GOOS != targetOS && prepareReleaseMode {
+ log.Errorf("It is not possible to prepare the flutter engine in release mode for darwin using docker")
+ os.Exit(1)
+ }
+}
+
+func subcommandPrepare(targetOS string) {
+ for _, mode := range prepareBuildModes {
+ enginecache.ValidateOrUpdateEngine(targetOS, prepareCachePath, prepareEngineVersion, mode)
+ }
+}

go.sum

@@ -67,7 +67,6 @@ github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5y
 github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/google/btree v0.0.0-20180813153112-4030bb1f1f0c/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
 github.com/google/btree v1.0.0/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
-github.com/google/go-cmp v0.2.0 h1:+dTQ8DZQJz0Mb/HjFlkptS1FeQ4cWSnN941F8aEG4SQ=
 github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
 github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
 github.com/google/go-cmp v0.5.2/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
@@ -151,8 +150,6 @@ github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646 h1:zYyBkD/k9seD2A7fsi6
 github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646/go.mod h1:jpp1/29i3P1S/RLdc7JQKbRpFeM1dOBd8T9ki5s+AY8=
 github.com/nkovacs/streamquote v1.0.0/go.mod h1:BN+NaZ2CmdKqUuTUXUEm9j95B2TRbpOWpxbJYzzgUsc=
 github.com/oklog/ulid v1.3.1/go.mod h1:CirwcVhetQ6Lv90oh/F+FBtV6XMibvdAFo93nm5qn4U=
-github.com/otiai10/copy v1.5.1 h1:a/cs2E1/1V0az8K5nblbl+ymEa4E11AfaOLMar8V34w=
-github.com/otiai10/copy v1.5.1/go.mod h1:XWfuS3CrI0R6IE0FbgHsEazaXO8G0LpMp9o8tos0x4E=
 github.com/otiai10/copy v1.6.0 h1:IinKAryFFuPONZ7cm6T6E2QX/vcJwSnlaA5lfoaXIiQ=
 github.com/otiai10/copy v1.6.0/go.mod h1:XWfuS3CrI0R6IE0FbgHsEazaXO8G0LpMp9o8tos0x4E=
 github.com/otiai10/curr v0.0.0-20150429015615-9b4961190c95/go.mod h1:9qAhocn7zKJG+0mI8eUu6xqkFDYS2kb2saOteoSB3cE=
@@ -201,7 +198,6 @@ github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An
 github.com/spf13/viper v1.7.0/go.mod h1:8WkrPz2fc9jxqZNCJI/76HCieCp4Q8HaLFoCha5qpdg=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/testify v1.2.2 h1:bSDNvY7ZPG5RlJ8otE/7V6gMiyenm9RtJ7IUVIAoJ1w=
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
@@ -319,7 +315,6 @@ golang.org/x/tools v0.0.0-20191012152004-8de300cfc20a/go.mod h1:b+2E5dAYhXwXZwtn
 golang.org/x/tools v0.0.0-20191112195655-aa38f8e97acc/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898 h1:/atklqdjdhuosWIl6AIbOeHJjicWYPqR9bpxqxYG2pA=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=