add function to check if file/dir exists

Makefile

@@ -54,8 +54,8 @@ generate_mocks:
 
 install_local:
 	go build -ldflags "-X main.version=${git_commit}" -gcflags=all="-N -l" -o bin/jumppad main.go
-	sudo mv /usr/bin/jumppad /usr/bin/jumppad-old || true
-	sudo cp bin/jumppad /usr/bin/jumppad
+	sudo mv /usr/bin/jumppad /usr/local/bin/jumppad-old || true
+	sudo cp bin/jumppad /usr/local/bin/jumppad
 
 remove_local:
-	sudo mv /usr/bin/jumppad-old /usr/bin/jumppad || true
+	sudo mv /usr/local/bin/jumppad-old /usr/local/bin/jumppad || true

examples/functions/container.hcl

@@ -23,21 +23,17 @@ resource "container" "consul" {
   }
 
   environment = {
-    file_dir          = dir()
-    env               = env("HOME")
-    k8s_config        = k8s_config("dc1")
-    k8s_config_docker = k8s_config_docker("dc1")
-    home              = home()
-    shipyard          = shipyard()
-    file              = file("./default.vars")
-    data              = data("mine")
-    docker_ip         = docker_ip()
-    docker_host       = docker_host()
-    shipyard_ip       = shipyard_ip()
-    cluster_api       = cluster_api("nomad_cluster.dc1")
-    cluster_port      = cluster_port("nomad_cluster.dc1")
-    var_len           = len(variable.test_var)
-    os                = system("os")
-    arch              = system("arch")   
+    file_dir              = dir()
+    env                   = env("HOME")
+    home                  = home()
+    file                  = file("./default.vars")
+    data                  = data("mine")
+    data_with_permissions = data_with_permissions("mine", 755)
+    docker_ip             = docker_ip()
+    docker_host           = docker_host()
+    var_len               = len(variable.test_var)
+    os                    = system("os")
+    arch                  = system("arch")
+    exists                = exists("file")
   }
 }

go.mod

@@ -36,7 +36,7 @@ require (
 	github.com/infinytum/raymond/v2 v2.0.5
 	github.com/jumppad-labs/connector v0.4.0
 	github.com/jumppad-labs/gohup v0.4.0
-	github.com/jumppad-labs/hclconfig v0.25.0
+	github.com/jumppad-labs/hclconfig v0.25.1-0.20241021153408-472adc840789
 	github.com/jumppad-labs/plugin-sdk v0.1.1-0.20240306185853-c09f71f81b8a
 	github.com/kennygrant/sanitize v1.2.4
 	github.com/mattn/go-isatty v0.0.20
@@ -265,6 +265,6 @@ replace github.com/charmbracelet/log => github.com/jumppad-labs/log v0.0.0-20240
 
 replace github.com/zclconf/go-cty => github.com/jumppad-labs/go-cty v0.0.0-20230804061424-9e985cb751f6
 
-//replace github.com/jumppad-labs/hclconfig => ../hclconfig/
+// replace github.com/jumppad-labs/hclconfig => ../hclconfig/
 
 //replace github.com/jumppad-labs/gohup => ../gohup/

go.sum

@@ -690,10 +690,8 @@ github.com/jumppad-labs/go-cty v0.0.0-20230804061424-9e985cb751f6 h1:1ADItCWr5pr
 github.com/jumppad-labs/go-cty v0.0.0-20230804061424-9e985cb751f6/go.mod h1:YKQzy/7pZ7iq2jNFzy5go57xdxdWoLLpaEp4u238AE0=
 github.com/jumppad-labs/gohup v0.4.0 h1:0OplHvnKnOLkqWm417sRHLSiJ4xGeb8LiSSAJ51QrYg=
 github.com/jumppad-labs/gohup v0.4.0/go.mod h1:JYvZnemxJlWDyx8RbDNcCBLZSvIrYlYLnkQqR1BKFW4=
-github.com/jumppad-labs/hclconfig v0.24.0 h1:SyMCl2rwLC5o32CCp50fsVbJxyFFCiYoMejvfh9RJKM=
-github.com/jumppad-labs/hclconfig v0.24.0/go.mod h1:AOzW0btnKiqUKYVi3ioGzSPNCWsTzsJxKcqzVORccvk=
-github.com/jumppad-labs/hclconfig v0.25.0 h1:CRIprG+i+Ol9s2izb6PRrt23kyGYZ1OC/XGFqdI1o/M=
-github.com/jumppad-labs/hclconfig v0.25.0/go.mod h1:AOzW0btnKiqUKYVi3ioGzSPNCWsTzsJxKcqzVORccvk=
+github.com/jumppad-labs/hclconfig v0.25.1-0.20241021153408-472adc840789 h1:iRef4QLFCuOEI/YsfZIw4tuKMytOrtg4/vSPIIdBGZQ=
+github.com/jumppad-labs/hclconfig v0.25.1-0.20241021153408-472adc840789/go.mod h1:AOzW0btnKiqUKYVi3ioGzSPNCWsTzsJxKcqzVORccvk=
 github.com/jumppad-labs/log v0.0.0-20240827082827-4404884e31a7 h1:tuoFYWXAqT5BheDlQNumY1DxvkW8bjG9JOzoxpFneZs=
 github.com/jumppad-labs/log v0.0.0-20240827082827-4404884e31a7/go.mod h1:S9jhxE2C1+jv2PlLTAow3h+ZILzvXRhd6eBjFAUcfgI=
 github.com/jumppad-labs/plugin-sdk v0.1.1-0.20240306185853-c09f71f81b8a h1:fqPvAO1o/6bUIm0fwEbXcUzUCng+GDlLmSMT/5oUJUE=

pkg/config/functions.go

@@ -23,7 +23,7 @@ func customHCLFuncDockerHost() (string, error) {
 }
 
 func customHCLFuncDataFolderWithPermissions(name string, permissions int) (string, error) {
-	if permissions > 0 && permissions < 778 {
+	if permissions < 0 || permissions > 777 {
 		return "", fmt.Errorf("permissions must be a three digit number less than 777")
 	}
 
@@ -50,3 +50,11 @@ func customHCLFuncSystem(property string) (string, error) {
 		return "", fmt.Errorf("unknown system property %s", property)
 	}
 }
+
+func customHCLFuncExists(path string) (bool, error) {
+	if _, err := os.Stat(path); err != nil {
+		return false, nil
+	}
+
+	return true, nil
+}

pkg/config/functions_test.go

@@ -0,0 +1,24 @@
+package config
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestExistsFalse(t *testing.T) {
+	exists, err := customHCLFuncExists("nonexistent")
+	require.NoError(t, err)
+	require.Equal(t, false, exists)
+}
+
+func TestExistsTrue(t *testing.T) {
+	file := filepath.Join(t.TempDir(), "testdata")
+	os.WriteFile(file, []byte("test"), 0644)
+
+	exists, err := customHCLFuncExists(file)
+	require.NoError(t, err)
+	require.Equal(t, true, exists)
+}

pkg/config/zz_hclparser.go

@@ -57,6 +57,7 @@ func NewParser(callback hclconfig.WalkCallback, variables map[string]string, var
 	p.RegisterFunction("data", customHCLFuncDataFolder)
 	p.RegisterFunction("data_with_permissions", customHCLFuncDataFolderWithPermissions)
 	p.RegisterFunction("system", customHCLFuncSystem)
+	p.RegisterFunction("exists", customHCLFuncExists)
 
 	return p
 }