Improve Python language detection by linked libraries (#1857)

procdiscovery/pkg/inspectors/langdetect.go

@@ -2,6 +2,7 @@ package inspectors
 
 import (
 	"fmt"
+
 	"github.com/hashicorp/go-version"
 	"github.com/odigos-io/odigos/common"
 	"github.com/odigos-io/odigos/procdiscovery/pkg/inspectors/dotnet"
@@ -33,9 +34,9 @@ type VersionInspector interface {
 var inspectorsList = []LanguageInspector{
 	&golang.GolangInspector{},
 	&java.JavaInspector{},
-	&python.PythonInspector{},
 	&dotnet.DotnetInspector{},
 	&nodejs.NodejsInspector{},
+	&python.PythonInspector{},
 	&mysql.MySQLInspector{},
 	&nginx.NginxInspector{},
 }

procdiscovery/pkg/inspectors/python/python.go

@@ -1,22 +1,33 @@
 package python
 
 import (
-	"github.com/hashicorp/go-version"
+	"debug/elf"
+	"fmt"
+	"os"
 	"strings"
 
+	"github.com/hashicorp/go-version"
+
 	"github.com/odigos-io/odigos/common"
 	"github.com/odigos-io/odigos/procdiscovery/pkg/process"
 )
 
 type PythonInspector struct{}
 
-const pythonProcessName = "python"
+const (
+	pythonProcessName = "python"
+	libPythonStr      = "libpython3"
+)
 
 func (p *PythonInspector) Inspect(proc *process.Details) (common.ProgrammingLanguage, bool) {
 	if strings.Contains(proc.ExeName, pythonProcessName) || strings.Contains(proc.CmdLine, pythonProcessName) {
 		return common.PythonProgrammingLanguage, true
 	}
 
+	if p.isLibPythonLinked(proc) {
+		return common.PythonProgrammingLanguage, true
+	}
+
 	return "", false
 }
 
@@ -27,3 +38,31 @@ func (p *PythonInspector) GetRuntimeVersion(proc *process.Details, containerURL
 
 	return nil
 }
+
+func (p *PythonInspector) isLibPythonLinked(proc *process.Details) bool {
+	f := fmt.Sprintf("/proc/%d/exe", proc.ProcessID)
+	file, err := os.Open(f)
+	if err != nil {
+		return false
+	}
+	defer file.Close()
+
+	elfFile, err := elf.NewFile(file)
+	if err != nil {
+		return false
+	}
+	defer elfFile.Close()
+
+	dynamicSection, err := elfFile.DynString(elf.DT_NEEDED)
+	if err != nil {
+		return false
+	}
+
+	for _, dep := range dynamicSection {
+		if strings.Contains(dep, libPythonStr) {
+			return true
+		}
+	}
+
+	return false
+}