add sponge+dtm+flashSale example

_12_sponge-dtm-flashSale/README.md

@@ -0,0 +1,6 @@
+## Sponge DTM Flash Sale
+
+## Overview
+
+- [**http**](http): http Flash Sale service.
+- [**grpc+http**](grpc+http): Flash Sale service that supports both grpc and http protocols. 

__10_micro-grpc-http-protobuf/.gitignore → _12_sponge-dtm-flashSale/grpc+http/.gitignore

@@ -22,5 +22,5 @@ dist/
 *.ipr
 *.iws
 
-cmd/user/user
+cmd/flashSale/flashSale
 

_12_sponge-dtm-flashSale/grpc+http/.golangci.yml

@@ -0,0 +1,342 @@
+# This file configures flashSale.
+
+run:
+  # timeout for analysis, e.g. 30s, 5m, default is 1m
+  timeout: 10m
+  # default concurrency is available CPU number
+  concurrency: 4
+  # include test files or not, default is true
+  tests: false
+  # which dirs to skip: issues from them won't be reported;
+  # can use regexp here: generated.*, regexp is applied on full path;
+  # default value is empty list, but default dirs are skipped independently
+  # from this option's value (see skip-dirs-use-default).
+  skip-dirs:
+    - docs
+    - api
+  # 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:
+    - _test.go
+
+  # exit code when at least one issue was found, default is 1
+  issues-exit-code: 1
+
+  # list of build tags, all linters use it. Default is empty list.
+  build-tags:
+    - mytag
+
+  # default is true. Enables skipping of directories:
+  # vendor$, third_party$, testdata$, examples$, Godeps$, builtin$
+  skip-dirs-use-default: true
+
+
+linters:
+  # please, do not use `enable-all`: it's deprecated and will be removed soon.
+  # inverted configuration with `enable-all` and `disable` is not scalable during updates of golangci-lint
+  disable-all: true
+  enable:
+    - revive
+    - goimports
+    - gofmt
+    - unused
+    #- depguard
+    - dogsled
+    - errcheck
+    #- gochecknoinits
+    - goconst
+    - gocyclo
+    - gosimple
+    - govet
+    - lll
+    - misspell
+    - typecheck
+    - unconvert
+    - whitespace
+    - staticcheck
+    #- bodyclose
+    #- dupl
+    #- goprintffuncname
+    #- gosec
+    #- unparam
+    #- ineffassign
+
+
+linters-settings:
+  revive:
+    rules:
+      - name: argument-limit
+        arguments: [ 8 ]
+      - name: atomic
+      - name: bare-return
+      - name: blank-imports
+      - name: bool-literal-in-expr
+      - name: call-to-gc
+      - name: confusing-naming
+      - name: confusing-results
+      - name: constant-logical-expr
+      - name: context-as-argument
+      - name: context-keys-type
+      - name: deep-exit
+      - name: defer
+      - name: dot-imports
+      - name: duplicated-imports
+      - name: early-return
+      - name: empty-block
+      #- name: empty-lines
+      - name: error-naming
+      - name: error-return
+      - name: error-strings
+      - name: errorf
+      - name: function-result-limit
+        arguments: [ 3 ]
+      - name: identical-branches
+      - name: if-return
+      - name: import-shadowing
+      - name: increment-decrement
+      - name: indent-error-flow
+      - name: modifies-parameter
+      - name: modifies-value-receiver
+      - name: package-comments
+      - name: range
+      - name: range-val-address
+      - name: range-val-in-closure
+      - name: receiver-naming
+      - name: redefines-builtin-id
+      - name: string-of-int
+      - name: struct-tag
+      - name: superfluous-else
+      - name: time-naming
+      - name: unconditional-recursion
+      - name: unexported-naming
+      - name: unnecessary-stmt
+      - name: unreachable-code
+      - name: unused-parameter
+      - name: var-declaration
+      - name: var-naming
+      - name: waitgroup-by-value
+
+  dogsled:
+    # checks assignments with too many blank identifiers; default is 2
+    max-blank-identifiers: 2
+
+  dupl:
+    # tokens count to trigger issue, 150 by default
+    threshold: 100
+
+  errcheck:
+    # report about not checking of errors in type assertions: `a := b.(MyStruct)`;
+    # default is false: such cases aren't reported by default.
+    check-type-assertions: false
+
+    # report about assignment of errors to blank identifier: `num, _ := strconv.Atoi(numStr)`;
+    # default is false: such cases aren't reported by default.
+    check-blank: false
+
+    # [deprecated] comma-separated list of pairs of the form pkg:regex
+    # the regex is used to ignore names within pkg. (default "fmt:.*").
+    # see https://github.com/kisielk/errcheck#the-deprecated-method for details
+    ignore: fmt:.*,io/ioutil:^Read.*
+
+    # 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
+  funlen:
+    lines: 60
+    statements: 40
+
+  gocognit:
+    # minimal code complexity to report, 30 by default (but we recommend 10-20)
+    min-complexity: 10
+
+  goconst:
+    # minimal length of string constant, 3 by default
+    min-len: 4
+    # minimal occurrences count to trigger, 3 by default
+    min-occurrences: 4
+
+  gocyclo:
+    # minimal code complexity to report, 30 by default (but we recommend 10-20)
+    min-complexity: 20
+
+  godox:
+    # report any comments starting with keywords, this is useful for TODO or FIXME comments that
+    # might be left in the code accidentally and should be resolved before merging
+    keywords: # default keywords are TODO, BUG, and FIXME, these can be overwritten by this setting
+      - NOTE
+      - OPTIMIZE # marks code that should be optimized before merging
+      - HACK # marks hack-arounds that should be removed before merging
+
+  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: flashSale
+
+  gomnd:
+    settings:
+      mnd:
+        # the list of enabled checks, see https://github.com/tommy-muehle/go-mnd/#checks for description.
+        checks: argument,case,condition,operation,return,assign
+
+  govet:
+    # report about shadowed variables
+    check-shadowing: true
+
+    # settings per analyzer
+    settings:
+      printf: # analyzer name, run `go tool vet help` to see all analyzers
+        funcs: # run `go tool vet help printf` to see available settings for `printf` analyzer
+          - (github.com/golangci/golangci-lint/pkg/logutils.Log).Infof
+          - (github.com/golangci/golangci-lint/pkg/logutils.Log).Warnf
+          - (github.com/golangci/golangci-lint/pkg/logutils.Log).Errorf
+          - (github.com/golangci/golangci-lint/pkg/logutils.Log).Fatalf
+
+    # enable or disable analyzers by name
+    enable:
+      - atomicalign
+    enable-all: false
+    disable:
+      - shadow
+    disable-all: false
+
+  depguard:
+    list-type: blacklist
+    include-go-root: false
+      #packages:
+      #  - github.com/user/name
+      #packages-with-error-message:
+    # specify an error message to output when a blacklisted package is used
+    #  - github.com/user/name: "logging is allowed only by logutils.Log"
+
+  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
+    line-length: 200
+    # tab width in spaces. Default to 1.
+    tab-width: 1
+
+  maligned:
+    # print struct with more effective memory layout or not, false by default
+    suggest-new: true
+
+  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
+
+  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
+
+  prealloc:
+    # XXX: we don't recommend using this linter before doing performance profiling.
+    # For most programs usage of prealloc will be a premature optimization.
+
+    # Report preallocation suggestions only on simple loops that have no returns/breaks/continues/gotos in them.
+    # True by default.
+    simple: true
+    range-loops: true # Report preallocation suggestions on range loops, true by default
+    for-loops: false # Report preallocation suggestions on for loops, false by default
+
+  #rowserrcheck:
+  #  packages:
+  #    - github.com/user/name
+
+  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
+
+  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
+
+  whitespace:
+    multi-if: false   # Enforces newlines (or comments) after every multi-line if statement
+    multi-func: false # Enforces newlines (or comments) after every multi-line function signature
+
+  wsl:
+    # If true append is only allowed to be cuddled if appending value is
+    # matching variables, fields or types on line above. Default is true.
+    strict-append: true
+    # Allow calls and assignments to be cuddled as long as the lines have any
+    # matching variables, fields or types. Default is true.
+    allow-assign-and-call: true
+    # Allow multiline assignments to be cuddled. Default is true.
+    allow-multiline-assign: true
+    # Allow declarations (var) to be cuddled.
+    allow-cuddle-declarations: false
+    # Allow trailing comments in ending of blocks
+    allow-trailing-comment: false
+    # Force newlines in end of case at this limit (0 = never).
+    force-case-trailing-whitespace: 0
+
+issues:
+  # List of regexps of issue texts to exclude, empty list by default.
+  # But independently from this option we use default exclude patterns,
+  # it can be disabled by `exclude-use-default: false`. To list all
+  # excluded by default patterns execute `golangci-lint run --help`
+  exclude:
+    - abcdef
+
+  # Excluding configuration per-path, per-linter, per-text and per-source
+  exclude-rules:
+    # Exclude some linters from running on tests files.
+    - path: _test\.go
+      linters:
+        - gocyclo
+        - errcheck
+        - dupl
+        - gosec
+
+    # Exclude known linters from partially hard-vendored code,
+    # which is impossible to exclude via "nolint" comments.
+    - path: internal/hmac/
+      text: "weak cryptographic primitive"
+      linters:
+        - gosec
+
+    # Exclude lll issues for long lines with go:generate
+    - linters:
+        - lll
+      source: "^//go:generate "
+
+  # Independently from option `exclude` we use default exclude patterns,
+  # it can be disabled by this option. To list all
+  # excluded by default patterns execute `golangci-lint run --help`.
+  # Default value for this option is true.
+  exclude-use-default: false
+
+  # Maximum issues count per one linter. Set to 0 to disable. Default is 50.
+  max-issues-per-linter: 0
+
+  # Maximum count of issues with the same text. Set to 0 to disable. Default is 3.
+  max-same-issues: 0
+
+  # Show only new issues: if there are unstaged changes or untracked files,
+  # only those changes are analyzed, else only changes in HEAD~ are analyzed.
+  # It's a super-useful option for integration of golangci-lint into existing
+  # large codebase. It's not practical to fix all existing issues at the moment
+  # of integration: much better don't allow issues in new code.
+  # Default is false.
+  new: false
+
+  # Show only new issues created after git revision `REV`
+  new-from-rev: ""
+
+service:
+  golangci-lint-version: 1.48.0 # use the fixed version to not introduce new linters unexpectedly