chore: add lint configuration and fix lint issue

.golangci.yaml

@@ -0,0 +1,106 @@
+version: "2"
+run:
+  issues-exit-code: 1
+output:
+  formats:
+    text:
+      path: stdout
+      print-linter-name: true
+      print-issued-lines: true
+linters:
+  default: none
+  enable:
+    - depguard
+    - exhaustive
+    - goconst
+    - gocyclo
+    - gosec
+    - govet
+    - ineffassign
+    - lll
+    - paralleltest
+    - promlinter
+    - revive
+    - staticcheck
+    - thelper
+    - tparallel
+    - unparam
+    - unused
+  settings:
+    depguard:
+      rules:
+        prevent_unmaintained_packages:
+          list-mode: lax
+          files:
+            - $all
+            - '!$test'
+          deny:
+            - pkg: io/ioutil
+              desc: this is deprecated
+    gocyclo:
+      min-complexity: 15
+    gosec:
+      excludes:
+        - G601
+    lll:
+      line-length: 130
+    revive:
+      severity: warning
+      rules:
+        - name: blank-imports
+          severity: warning
+        - name: context-as-argument
+        - name: context-keys-type
+        - name: duplicated-imports
+        - name: error-naming
+        - name: error-return
+        - name: exported
+          severity: error
+        - name: if-return
+        - name: identical-branches
+        - name: indent-error-flow
+        - name: import-shadowing
+        - name: package-comments
+        - name: redefines-builtin-id
+        - name: struct-tag
+        - name: unconditional-recursion
+        - name: unnecessary-stmt
+        - name: unreachable-code
+        - name: unused-parameter
+        - name: unused-receiver
+        - name: unhandled-error
+          disabled: true
+  exclusions:
+    generated: lax
+    rules:
+      - linters:
+          - lll
+          - gocyclo
+          - errcheck
+          - dupl
+          - gosec
+          - paralleltest
+        path: (.+)_test\.go
+      - linters:
+          - lll
+        path: .golangci.yml
+    paths:
+      - third_party$
+      - builtin$
+      - examples$
+formatters:
+  enable:
+    - gci
+    - gofmt
+  settings:
+    gci:
+      sections:
+        - standard
+        - default
+        - prefix(github.com/StacklokLabs/osv-mcp)
+  exclusions:
+    generated: lax
+    paths:
+      - third_party$
+      - builtin$
+      - examples$

cmd/server/main.go

@@ -1,3 +1,4 @@
+// Package main provides the entry point for the OSV MCP Server.
 package main
 
 import (
@@ -45,4 +46,4 @@ func main() {
 	}
 
 	log.Println("Shutting down server")
-}
+}

cmd/server/main_test.go

@@ -24,4 +24,4 @@ func TestCreateServer(t *testing.T) {
 	// Verify server properties
 	assert.Equal(t, mcp.ServerName, "osv-mcp")
 	assert.Equal(t, mcp.ServerVersion, "0.1.0")
-}
+}

pkg/mcp/server.go

@@ -1,3 +1,4 @@
+// Package mcp provides MCP server tools for OSV.
 package mcp
 
 import (
@@ -15,7 +16,7 @@ import (
 const (
 	// ServerName is the name of the MCP server
 	ServerName = "osv-mcp"
-	
+
 	// ServerVersion is the version of the MCP server
 	ServerVersion = "0.1.0"
 )
@@ -235,7 +236,9 @@ func (s *Server) handleQueryVulnerabilitiesBatch(ctx context.Context, request mc
 		}
 
 		if purl != "" && (packageName != "" || ecosystem != "") {
-			return mcp.NewToolResultError(fmt.Sprintf("If purl is specified, package_name and ecosystem should not be specified in query %d", i)), nil
+			return mcp.NewToolResultError(
+				fmt.Sprintf("If purl is specified, package_name and ecosystem should not be specified in query %d", i),
+			), nil
 		}
 
 		// Create query request
@@ -293,4 +296,4 @@ func (s *Server) handleGetVulnerability(ctx context.Context, request mcp.CallToo
 	}
 
 	return mcp.NewToolResultText(string(result)), nil
-}
+}