fix: requested changes

Signed-off-by: Soumil Paranjpay <soumil.paranjpay@gmail.com>

Makefile

@@ -165,7 +165,7 @@ $(GOX):
 
 .PHONY: build-cross
 build-cross: $(GOX) clean $(SRC) $(ASSETS) $(WEB_ASSETS)
-	CGO_ENABLED=0 $(GOX) -parallel=3 -output="$(DISTDIR)/{{.OS}}-{{.Arch}}/$(BINNAME)" -osarch='$(TARGETS)' -ldflags '$(LDFLAGS)' .
+	CGO_ENABLED=1 $(GOX) -parallel=3 -output="$(DISTDIR)/{{.OS}}-{{.Arch}}/$(BINNAME)" -osarch='$(TARGETS)' -ldflags '$(LDFLAGS)' .
 
 .PHONY: dist
 dist: clean build-cross ## Build distribution

go.mod

@@ -34,6 +34,7 @@ require (
 	github.com/phayes/freeport v0.0.0-20180830031419-95f893ade6f2
 	github.com/pkg/errors v0.9.1
 	github.com/qri-io/starlib v0.5.0
+	github.com/second-state/WasmEdge-go v0.13.0
 	github.com/sirupsen/logrus v1.9.0
 	github.com/spf13/cast v1.4.1
 	github.com/spf13/cobra v1.6.1
@@ -185,7 +186,6 @@ require (
 	github.com/robfig/cron v1.2.0 // indirect
 	github.com/russross/blackfriday v1.6.0 // indirect
 	github.com/russross/blackfriday/v2 v2.1.0 // indirect
-	github.com/second-state/WasmEdge-go v0.13.0 // indirect
 	github.com/sergi/go-diff v1.2.0 // indirect
 	github.com/spf13/afero v1.8.0 // indirect
 	github.com/spf13/jwalterweatherman v1.1.0 // indirect

transformer/external/wasmtransformer.go

@@ -20,6 +20,7 @@ import (
 	"encoding/binary"
 	"encoding/json"
 	"fmt"
+	"path/filepath"
 	"sort"
 	"strings"
 
@@ -58,7 +59,7 @@ func (t *WASM) Init(tc transformertypes.Transformer, env *environment.Environmen
 	t.Env = env
 	t.WASMConfig = &WASMYamlConfig{}
 	if err := common.GetObjFromInterface(t.Config.Spec.Config, t.WASMConfig); err != nil {
-		return fmt.Errorf("unable to load config for Transformer %+v into %T . Error: %q", t.Config.Spec.Config, t.WASMConfig, err)
+		return fmt.Errorf("unable to load config for Transformer %+v into %T . Error: %w", t.Config.Spec.Config, t.WASMConfig, err)
 	}
 
 	return nil
@@ -99,7 +100,7 @@ func (t *WASM) DirectoryDetect(dir string) (map[string][]transformertypes.Artifa
 	memData[len(dir)] = 0
 	directoryDetectOutput, dderr := vm.Execute("directoryDetect", dirPointer)
 	if dderr != nil {
-		err = fmt.Errorf("failed to execute directoryDetect in the wasm module. Error : %s", dderr.Error())
+		err = fmt.Errorf("failed to execute directoryDetect in the wasm module. Error : %w", dderr)
 		return nil, err
 	}
 	directoryDetectOutputPointer := directoryDetectOutput[0].(int32)
@@ -203,7 +204,10 @@ func (t *WASM) Transform(newArtifacts []transformertypes.Artifact, alreadySeenAr
 	}
 	logrus.Debug(string(memData))
 	var output transformertypes.TransformOutput
-	json.Unmarshal(memData, &output)
+	err = json.Unmarshal(memData, &output)
+	if err != nil {
+		return nil, nil, fmt.Errorf("failed to unmarshal transformer output: %w", err)
+	}
 	pathMappings = append(pathMappings, output.PathMappings...)
 	createdArtifacts = append(createdArtifacts, output.CreatedArtifacts...)
 	return pathMappings, createdArtifacts, err
@@ -221,7 +225,7 @@ func (t *WASM) initVm(preopens []string) (*wasmedge.VM, error) {
 		preopens,
 	)
 
-	err := vm.LoadWasmFile(t.WASMConfig.WASMModule)
+	err := vm.LoadWasmFile(filepath.Join(t.Env.GetEnvironmentContext(), t.WASMConfig.WASMModule))
 	if err != nil {
 		return nil, err
 	}