SBOM improvements

internal/pipe/sbom/sbom.go

@@ -72,7 +72,7 @@ func setConfigDefaults(cfg *config.SBOM) error {
 	}
 	if cfg.Cmd == "syft" {
 		if len(cfg.Args) == 0 {
-			cfg.Args = []string{"$artifact", "--file", "$document", "--output", "spdx-json"}
+			cfg.Args = []string{"$artifact", "--output", "spdx-json=$document"}
 		}
 		if len(cfg.Env) == 0 && (cfg.Artifacts == "source" || cfg.Artifacts == "archive") {
 			cfg.Env = []string{
@@ -131,6 +131,9 @@ func catalogTask(ctx *context.Context, cfg config.SBOM) func() error {
 			filters = append(filters, artifact.ByIDs(cfg.IDs...))
 		}
 		artifacts := ctx.Artifacts.Filter(artifact.And(filters...)).List()
+		if len(artifacts) == 0 {
+			log.Warn("no artifacts matching current filters")
+		}
 		return catalog(ctx, cfg, artifacts)
 	}
 }
@@ -240,6 +243,10 @@ func catalogArtifact(ctx *context.Context, cfg config.SBOM, a *artifact.Artifact
 
 	}
 
+	if len(artifacts) == 0 {
+		return nil, fmt.Errorf("cataloging artifacts: command did not write any files, check your configuration")
+	}
+
 	return artifacts, nil
 }
 

internal/pipe/sbom/sbom_test.go

@@ -24,7 +24,7 @@ func TestDescription(t *testing.T) {
 }
 
 func TestSBOMCatalogDefault(t *testing.T) {
-	defaultArgs := []string{"$artifact", "--file", "$document", "--output", "spdx-json"}
+	defaultArgs := []string{"$artifact", "--output", "spdx-json=$document"}
 	defaultSboms := []string{
 		"{{ .ArtifactName }}.sbom",
 	}
@@ -307,10 +307,8 @@ func TestSBOMCatalogArtifacts(t *testing.T) {
 					{
 						Artifacts: "any",
 						Args: []string{
-							"--file",
-							"$document0",
 							"--output",
-							"spdx-json",
+							"spdx-json=$document0",
 							"artifact5.tar.gz",
 						},
 						Documents: []string{
@@ -377,10 +375,8 @@ func TestSBOMCatalogArtifacts(t *testing.T) {
 					{
 						Artifacts: "binary",
 						Args: []string{
-							"--file",
-							"$document",
 							"--output",
-							"spdx-json",
+							"spdx-json=$document",
 							"$artifact",
 						},
 						Documents: []string{
@@ -413,6 +409,23 @@ func TestSBOMCatalogArtifacts(t *testing.T) {
 			}),
 			expectedErrMsg: "cataloging artifacts: false failed: exit status 1: ",
 		},
+		{
+			desc: "catalog wrong command",
+			ctx: testctx.NewWithCfg(config.Project{
+				SBOMs: []config.SBOM{
+					{Args: []string{"$artifact", "--file", "$sbom", "--output", "spdx-json"}},
+				},
+			}),
+			expectedErrMsg: "cataloging artifacts: command did not write any files, check your configuration",
+		},
+		{
+			desc: "no matches",
+			ctx: testctx.NewWithCfg(config.Project{
+				SBOMs: []config.SBOM{
+					{IDs: []string{"nopenopenope"}},
+				},
+			}),
+		},
 	}
 
 	for _, test := range tests {

www/docs/customization/sbom.md

@@ -63,9 +63,9 @@ sboms:
 
     # Command line arguments for the command
     #
-    # Default: ["$artifact", "--file", "$document", "--output", "spdx-json"]
+    # Default: ["$artifact", "--output", "spdx-json=$document"]
     # Templates: allowed
-    args: ["$artifact", "--file", "$sbom", "--output", "spdx-json"]
+    args: ["$artifact", "--output", "cyclonedx-json:$document"]
 
     # List of environment variables that will be passed to the SBOM command as
     # well as the templates.