Merge pull request #7076 from yyforyongyu/tune-linters

golangci: fine-tune enabled linters

.golangci.yml

@@ -29,20 +29,25 @@ linters-settings:
   govet:
     # Don't report about shadowed variables
     check-shadowing: false
+
   gofmt:
     # simplify code: gofmt with `-s` option, true by default
     simplify: true
+
   tagliatelle:
     case:
       rules:
         json: snake
+
   whitespace:
     multi-func: true
     multi-if: true
+
   gosec:
     excludes:
       - G402 # Look for bad TLS connection settings.
       - G306 # Poor file permissions used when writing to a new file.
+
   staticcheck:
     go: "1.18"
     checks: ["-SA1019"]
@@ -56,11 +61,22 @@ linters-settings:
   funlen:
     # Checks the number of lines in a function.
     # If lower than 0, disable the check.
-    # Default: 60
+    lines: 200
-    lines: 60 
     # Checks the number of statements in a function.
-    # Default: 40
+    statements: 80
-    statements: 40
+
+  dupl:
+    # Tokens count to trigger issue.
+    threshold: 200
+
+  nestif:
+    # Minimal complexity of if statements to report.
+    min-complexity: 10
+
+  nlreturn:
+    # Size of the block (including return statement that is still "OK")
+    # so no return split required.
+    block-size: 3
 
 
 linters:
@@ -98,6 +114,55 @@ linters:
     - tparallel
     - unparam
     - wastedassign
+    - ifshort
+    - varcheck
+    - deadcode
+
+    # Disable gofumpt as it has weird behavior regarding formatting multiple
+    # lines for a function which is in conflict with our contribution
+    # guidelines. See https://github.com/mvdan/gofumpt/issues/235.
+    - gofumpt
+
+    # Disable whitespace linter as it has conflict rules against our
+    # contribution guidelines. See https://github.com/bombsimon/wsl/issues/109.
+    #
+    # TODO(yy): bring it back when the above issue is fixed.
+    - wsl
+
+    # Allow using default empty values.
+    - exhaustruct
+
+    # Allow exiting case select faster by putting everything in default.
+    - exhaustive
+
+    # Allow tests to be put in the same package.
+    - testpackage
+
+    # Don't run the cognitive related linters.
+    - gocognit
+    - gocyclo
+    - maintidx
+    - cyclop
+
+    # Allow customized interfaces to be returned from functions.
+    - ireturn
+
+    # Disable too many blank identifiers check. We won't be able to run this
+    # unless a large refactor has been applied to old code.
+    - dogsled
+
+    # We don't wrap errors.
+    - wrapcheck
+
+    # Allow dynamic errors.
+    - goerr113
+
+    # We use ErrXXX instead.
+    - errname
+
+    # Disable nil check to allow returning multiple nil values.
+    - nilnil
+
 
 issues:
   # Only show newly introduced problems.
@@ -110,6 +175,7 @@ issues:
       linters:
         - gosec
         - funlen
+
     - path: test*
       linters:
         - gosec
@@ -146,7 +212,6 @@ issues:
     - path: lntest/itest/.*
       linters:
         - unused
-        - deadcode
         - unparam
         - govet
         # itest case can be very long so we disable long function check.