WIP: Save current state - security subsystems, migrations, logging

aggregator-server/internal/version/versions.go

@@ -0,0 +1,74 @@
+package version
+
+import (
+	"fmt"
+	"time"
+)
+
+// Version coordination for Server Authority model
+// The server is the single source of truth for all version information
+
+// CurrentVersions holds the authoritative version information
+type CurrentVersions struct {
+	AgentVersion    string `json:"agent_version"`    // e.g., "0.1.23.6"
+	ConfigVersion   string `json:"config_version"`   // e.g., "6"
+	MinAgentVersion string `json:"min_agent_version"` // e.g., "0.1.22"
+	BuildTime       time.Time `json:"build_time"`
+}
+
+// GetCurrentVersions returns the current version information
+// In production, this would come from a version file, database, or environment
+func GetCurrentVersions() CurrentVersions {
+	// TODO: For production, load this from version file or database
+	// For now, use environment variables with defaults
+	return CurrentVersions{
+		AgentVersion:    "0.1.23", // Should match current branch
+		ConfigVersion:   "3",       // Should map from agent version (0.1.23 -> "3")
+		MinAgentVersion: "0.1.22",
+		BuildTime:       time.Now(),
+	}
+}
+
+// ExtractConfigVersionFromAgent extracts config version from agent version
+// Agent version format: v0.1.23.6 where fourth octet maps to config version
+func ExtractConfigVersionFromAgent(agentVersion string) string {
+	// Strip 'v' prefix if present
+	cleanVersion := agentVersion
+	if len(cleanVersion) > 0 && cleanVersion[0] == 'v' {
+		cleanVersion = cleanVersion[1:]
+	}
+
+	// Split version parts
+	parts := fmt.Sprintf("%s", cleanVersion)
+	if len(parts) >= 1 {
+		// For now, use the last octet as config version
+		// v0.1.23 -> "3" (last digit)
+		lastChar := parts[len(parts)-1:]
+		return lastChar
+	}
+
+	// Default fallback
+	return "3"
+}
+
+// ValidateAgentVersion checks if an agent version is compatible
+func ValidateAgentVersion(agentVersion string) error {
+	current := GetCurrentVersions()
+
+	// Check minimum version
+	if agentVersion < current.MinAgentVersion {
+		return fmt.Errorf("agent version %s is below minimum %s", agentVersion, current.MinAgentVersion)
+	}
+
+	return nil
+}
+
+// GetBuildFlags returns the ldflags to inject versions into agent builds
+func GetBuildFlags() []string {
+	versions := GetCurrentVersions()
+	return []string{
+		fmt.Sprintf("-X github.com/Fimeg/RedFlag/aggregator-agent/internal/version.Version=%s", versions.AgentVersion),
+		fmt.Sprintf("-X github.com/Fimeg/RedFlag/aggregator-agent/internal/version.ConfigVersion=%s", versions.ConfigVersion),
+		fmt.Sprintf("-X github.com/Fimeg/RedFlag/aggregator-agent/internal/version.BuildTime=%s", versions.BuildTime.Format(time.RFC3339)),
+	}
+}