From 6db200d89ed512603aa65344796127ad5d389c82 Mon Sep 17 00:00:00 2001
From: Emily McMullan <emcmulla@redhat.com>
Date: Tue, 29 Oct 2024 14:52:19 -0400
Subject: [PATCH] global settings file for java provider

Signed-off-by: Emily McMullan <emcmulla@redhat.com>
---
 .../pkg/java_external_provider/provider.go    | 40 +++++++++++++++++++
 .../java_external_provider/service_client.go  |  4 +-
 2 files changed, 43 insertions(+), 1 deletion(-)

diff --git a/external-providers/java-external-provider/pkg/java_external_provider/provider.go b/external-providers/java-external-provider/pkg/java_external_provider/provider.go
index 5c9c527e..278b3d41 100644
--- a/external-providers/java-external-provider/pkg/java_external_provider/provider.go
+++ b/external-providers/java-external-provider/pkg/java_external_provider/provider.go
@@ -41,6 +41,7 @@ const (
 	BUNDLES_INIT_OPTION           = "bundles"
 	WORKSPACE_INIT_OPTION         = "workspace"
 	MVN_SETTINGS_FILE_INIT_OPTION = "mavenSettingsFile"
+	GLOBAL_SETTINGS_INIT_OPTION   = "mavenCacheDir"
 	JVM_MAX_MEM_INIT_OPTION       = "jvmMaxMem"
 )
 
@@ -237,6 +238,17 @@ func (p *javaProvider) Init(ctx context.Context, log logr.Logger, config provide
 	if !ok {
 		mavenSettingsFile = ""
 	}
+	var globalSettingsFile string
+	var returnError error
+	globalM2, ok := config.ProviderSpecificConfig[GLOBAL_SETTINGS_INIT_OPTION].(string)
+	if !ok {
+		globalM2 = ""
+	} else {
+		globalSettingsFile, returnError = p.BuildSettingsFile(globalM2)
+		if returnError != nil {
+			return nil, additionalBuiltinConfig, returnError
+		}
+	}
 
 	lspServerPath, ok := config.ProviderSpecificConfig[provider.LspServerPathConfigKey].(string)
 	if !ok || lspServerPath == "" {
@@ -387,6 +399,7 @@ func (p *javaProvider) Init(ctx context.Context, log logr.Logger, config provide
 		depToLabels:       map[string]*depLabelItem{},
 		isLocationBinary:  isBinary,
 		mvnSettingsFile:   mavenSettingsFile,
+		globalSettings:    globalSettingsFile,
 		depsLocationCache: make(map[string]int),
 		includedPaths:     provider.GetIncludedPathsFromConfig(config, false),
 	}
@@ -884,3 +897,30 @@ func (p *javaProvider) GetDependencies(ctx context.Context) (map[uri.URI][]*prov
 func (p *javaProvider) GetDependenciesDAG(ctx context.Context) (map[uri.URI][]provider.DepDAGItem, error) {
 	return provider.FullDepDAGResponse(ctx, p.clients)
 }
+
+func (p *javaProvider) BuildSettingsFile(m2CacheDir string) (settingsFile string, err error) {
+	fileContentTemplate := `
+<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 https://maven.apache.org/xsd/settings-1.0.0.xsd">
+  <localRepository>%v</localRepository>
+</settings>
+	`
+	var settingsFilePath string
+	m2Home := os.Getenv("M2_HOME")
+	if m2Home != "" {
+		settingsFilePath = filepath.Join(m2Home, "conf", "globalSettings.xml")
+		f, err := os.Create(settingsFilePath)
+		if err != nil {
+			return "", err
+		}
+		defer func() {
+			_ = f.Close()
+		}()
+		_, err = f.Write([]byte(fmt.Sprintf(fileContentTemplate, m2CacheDir)))
+		if err != nil {
+			return "", err
+		}
+	}
+
+	return settingsFilePath, nil
+}
diff --git a/external-providers/java-external-provider/pkg/java_external_provider/service_client.go b/external-providers/java-external-provider/pkg/java_external_provider/service_client.go
index f3d8d2f8..ed2a6129 100644
--- a/external-providers/java-external-provider/pkg/java_external_provider/service_client.go
+++ b/external-providers/java-external-provider/pkg/java_external_provider/service_client.go
@@ -32,6 +32,7 @@ type javaServiceClient struct {
 	depToLabels       map[string]*depLabelItem
 	isLocationBinary  bool
 	mvnSettingsFile   string
+	globalSettings    string
 	depsMutex         sync.RWMutex
 	depsCache         map[uri.URI][]*provider.Dep
 	depsLocationCache map[string]int
@@ -241,7 +242,8 @@ func (p *javaServiceClient) initialization(ctx context.Context) {
 			"java": map[string]interface{}{
 				"configuration": map[string]interface{}{
 					"maven": map[string]interface{}{
-						"userSettings": p.mvnSettingsFile,
+						"userSettings":   p.mvnSettingsFile,
+						"globalSettings": p.globalSettings,
 					},
 				},
 				"autobuild": map[string]interface{}{