replace gometalinter with golangci

gometalinter is being deprecated in favor of golangci.
switching to golangci in ci and make test

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>

.travis.yml

@@ -18,7 +18,7 @@ go: 1.11.x
 
 env:
   global:
-    - GO_METALINTER_VERSION="v3.0.0"
+    - GOLANGCI_VERSION="v1.15.0"
     - TEST_COVERAGE=stdout
     - GO_METALINTER_THREADS=1
     - GO_COVER_DIR=_output
@@ -30,10 +30,10 @@ jobs:
         - gem install mdl
         - pip install --user --upgrade pip
         - pip install --user yamllint
-        # install gometalinter
-        - curl -L
-         "https://raw.githubusercontent.com/alecthomas/gometalinter/"${GO_METALINTER_VERSION}"/scripts/install.sh"
-         | bash -s -- -b $GOPATH/bin "${GO_METALINTER_VERSION}"
+        # install golangci-lint
+        - curl -sf
+          "https://install.goreleaser.com/github.com/golangci/golangci-lint.sh"
+          | bash -s -- -b $GOPATH/bin "${GOLANGCI_VERSION}"
       script:
         - scripts/lint-text.sh --require-all
         - scripts/lint-go.sh
@@ -49,6 +49,6 @@ jobs:
 
 deploy:
   - provider: script
-    on:  # yamllint disable-line rule:truthy
+    on: # yamllint disable-line rule:truthy
       all_branches: true
     script: ./deploy.sh

scripts/golangci.yml

@@ -0,0 +1,142 @@
+---
+# https://github.com/golangci/golangci-lint/blob/master/.golangci.example.yml
+# This file contains all available configuration options
+# with their default values.
+
+# options for analysis running
+run:
+  # default concurrency is a available CPU number
+  concurrency: 4
+
+  # timeout for analysis, e.g. 30s, 5m, default is 1m
+  deadline: 10m
+
+  # exit code when at least one issue was found, default is 1
+  issues-exit-code: 1
+
+  # include test files or not, default is true
+  tests: true
+
+  # which dirs to skip: they won't be analyzed;
+  # can use regexp here: generated.*, regexp is applied on full path;
+  # default value is empty list, but next dirs are always skipped independently
+  # from this option's value:
+  #   	vendor$, third_party$, testdata$, examples$, Godeps$, builtin$
+  skip-dirs:
+    - vendor$
+
+  # which files to skip: they will be analyzed, but issues from them
+  # won't be reported. Default value is empty list, but there is
+  # no need to include all autogenerated files, we confidently recognize
+  # autogenerated files. If it's not please let us know.
+  skip-files:
+
+# output configuration options
+output:
+  # colored-line-number|line-number|json|tab|checkstyle|code-climate, default is "colored-line-number"
+  format: colored-line-number
+
+  # print lines of code with issue, default is true
+  print-issued-lines: true
+
+  # print linter name in the end of issue text, default is true
+  print-linter-name: true
+
+# all available settings of specific linters
+linters-settings:
+  errcheck:
+    # report about not checking of errors in type assetions: `a := b.(MyStruct)`;
+    # default is false: such cases aren't reported by default.
+    check-type-assertions: true
+
+    # report about assignment of errors to blank identifier: `num, _ := strconv.Atoi(numStr)`;
+    # default is false: such cases aren't reported by default.
+    check-blank: true
+
+    # path to a file containing a list of functions to exclude from checking
+    # see https://github.com/kisielk/errcheck#excluding-functions for details
+    #exclude: /path/to/file.txt
+  govet:
+    # report about shadowed variables
+    check-shadowing: true
+  golint:
+    # minimal confidence for issues, default is 0.8
+    min-confidence: 0
+  gofmt:
+    # simplify code: gofmt with `-s` option, true by default
+    simplify: true
+  goimports:
+    # put imports beginning with prefix after 3rd-party packages;
+    # it's a comma-separated list of prefixes
+    local-prefixes: github.com/ceph/csph-csi
+  gocyclo:
+    # minimal code complexity to report, 30 by default (but we recommend 10-20)
+    min-complexity: 20
+  maligned:
+    # print struct with more effective memory layout or not, false by default
+    suggest-new: true
+  dupl:
+    # tokens count to trigger issue, 150 by default
+    threshold: 100
+  goconst:
+    # minimal length of string constant, 3 by default
+    min-len: 3
+    # minimal occurrences count to trigger, 3 by default
+    min-occurrences: 3
+  depguard:
+    list-type: blacklist
+    include-go-root: false
+    packages:
+      - github.com/davecgh/go-spew/spew
+  misspell:
+    # Correct spellings using locale preferences for US or UK.
+    # Default is to use a neutral variety of English.
+    # Setting locale to US will correct the British spelling of 'colour' to 'color'.
+    locale: US
+    ignore-words:
+      - someword
+  lll:
+    # max line length, lines longer will be reported. Default is 120.
+    # '\t' is counted as 1 character by default, and can be changed with the
+    # tab-width option
+    # TODO make line length to 120 char
+    line-length: 180
+    # tab width in spaces. Default to 1.
+    tab-width: 1
+  unused:
+    # treat code as a program (not a library) and report unused exported identifiers; default is false.
+    # XXX: if you enable this setting, unused will report a lot of false-positives in text editors:
+    # if it's called for subdir of a project it can't find funcs usages. All text editor integrations
+    # with golangci-lint call it on a directory with the changed file.
+    check-exported: false
+  unparam:
+    # Inspect exported functions, default is false. Set to true if no external program/library imports your code.
+    # XXX: if you enable this setting, unparam will report a lot of false-positives in text editors:
+    # if it's called for subdir of a project it can't find external interfaces. All text editor integrations
+    # with golangci-lint call it on a directory with the changed file.
+    check-exported: false
+  nakedret:
+    # make an issue if func has more lines of code than this setting and it has naked returns; default is 30
+    max-func-lines: 30
+
+linters:
+  enable:
+    - megacheck
+    - govet
+    - golint
+    - stylecheck
+    - interfacer
+    - unconvert
+    - gofmt
+    - gocyclo
+    - maligned
+    - lll
+    - nakedret
+  enable-all: false
+  disable:
+    - prealloc
+  disable-all: false
+  presets:
+    - bugs
+    - unused
+  fast: false

scripts/lint-go.sh

@@ -2,11 +2,8 @@
 
 set -o pipefail
 
-if [[ -x "$(command -v gometalinter)" ]]; then
-  gometalinter -j "${GO_METALINTER_THREADS:-1}" \
-    --sort path --sort line --sort column --deadline=10m \
-    --enable=misspell --enable=staticcheck \
-    --vendor "${@-./...}"
+if [[ -x "$(command -v golangci-lint)" ]]; then
+  golangci-lint --config=scripts/golangci.yml run ./... -v
 else
-  echo "WARNING: gometalinter not found, skipping lint tests" >&2
+  echo "WARNING: golangci-lint not found, skipping lint tests" >&2
 fi