Show the maximum available CPU/Memory on TiFlash Grafana panel

.clang-format

@@ -1,73 +1,63 @@
 ---
-BasedOnStyle:  WebKit
+BasedOnStyle:  Google
 Language:        Cpp
-AlignAfterOpenBracket: false
+AlignAfterOpenBracket: Align
+AlignEscapedNewlines: Left
+AlignTrailingComments: false
+AllowAllArgumentsOnNextLine: false
+AllowAllParametersOfDeclarationOnNextLine: false
+AllowShortBlocksOnASingleLine: Always
+AllowShortEnumsOnASingleLine: false
+AllowShortFunctionsOnASingleLine: Inline
+AllowShortLambdasOnASingleLine: Inline
+AlwaysBreakAfterReturnType: None
+AlwaysBreakTemplateDeclarations: true
+BinPackArguments: false
+BinPackParameters: false
 BreakBeforeBraces: Custom
-BraceWrapping: {
-    AfterClass: 'true'
-    AfterControlStatement: 'true'
-    AfterEnum : 'true'
-    AfterFunction : 'true'
-    AfterNamespace : 'true'
-    AfterStruct : 'true'
-    AfterUnion : 'true'
-    BeforeCatch : 'true'
-    BeforeElse : 'true'
-    IndentBraces : 'false'
-}
-
-BreakConstructorInitializersBeforeComma: false
+BraceWrapping: 
+    AfterCaseLabel: true
+    AfterClass: true
+    AfterControlStatement: true
+    AfterEnum : true
+    AfterFunction : true
+    AfterNamespace : true
+    AfterStruct : true
+    AfterUnion : true
+    BeforeCatch : true
+    BeforeElse : true
+    IndentBraces : false
+    SplitEmptyFunction: false
+BreakConstructorInitializers: BeforeComma
+BreakInheritanceList : BeforeComma
+ColumnLimit: 0
+ConstructorInitializerAllOnOneLineOrOnePerLine: false
 Cpp11BracedListStyle: true
-ColumnLimit:     140
-ConstructorInitializerAllOnOneLineOrOnePerLine: true
+EmptyLineBeforeAccessModifier: LogicalBlock
 ExperimentalAutoDetectBinPacking: true
-UseTab: Never
-TabWidth: 4
+FixNamespaceComments: true
+IndentCaseLabels: false
 IndentWidth: 4
-Standard: Cpp11
-PointerAlignment: Middle
-MaxEmptyLinesToKeep: 2
 KeepEmptyLinesAtTheStartOfBlocks: false
-#AllowShortFunctionsOnASingleLine: Inline
-AllowShortFunctionsOnASingleLine: Empty
-AlwaysBreakTemplateDeclarations: true
-IndentCaseLabels: true
-#SpaceAfterTemplateKeyword: true
-SortIncludes: true
-IncludeCategories:
-  - Regex:           '^<[a-z_]+>'
-    Priority:        1
-  - Regex:           '^<[a-z_]+.h>'
-    Priority:        2
-  - Regex:           '^["<](common|ext|mysqlxx|daemon|zkutil)/'
-    Priority:        90
-  - Regex:           '^["<](DB)/'
-    Priority:        100
-  - Regex:           '^["<](Poco)/'
-    Priority:        50
-  - Regex:           '^"'
-    Priority:        110
-  - Regex:           '/'
-    Priority:        30
-  - Regex:           '.*'
-    Priority:        40
+MaxEmptyLinesToKeep: 2
+#PPIndentWidth: 2  # clang-format version 12.0.0 doesn't support yet
+PointerAlignment: Middle
 ReflowComments: false
-AlignEscapedNewlinesLeft: true
+SortIncludes: true
+SpaceAfterTemplateKeyword: true
+Standard: Cpp11
+TabWidth: 4
+UseTab: Never
 
 # Not changed:
 AccessModifierOffset: -4
 AlignConsecutiveAssignments: false
+AlignConsecutiveDeclarations: false
 AlignOperands:   false
-AlignTrailingComments: false
-AllowAllParametersOfDeclarationOnNextLine: true
-AllowShortBlocksOnASingleLine: false
 AllowShortCaseLabelsOnASingleLine: false
 AllowShortIfStatementsOnASingleLine: false
 AllowShortLoopsOnASingleLine: false
-AlwaysBreakAfterDefinitionReturnType: None
 AlwaysBreakBeforeMultilineStrings: false
-BinPackArguments: false
-BinPackParameters: false
 BreakBeforeBinaryOperators: All
 BreakBeforeTernaryOperators: true
 CommentPragmas:  '^ IWYU pragma:'
@@ -80,7 +70,7 @@ IndentWidth:     4
 IndentWrappedFunctionNames: false
 MacroBlockBegin: ''
 MacroBlockEnd:   ''
-NamespaceIndentation: Inner
+NamespaceIndentation: None
 ObjCBlockIndentWidth: 4
 ObjCSpaceAfterProperty: true
 ObjCSpaceBeforeProtocolList: true
@@ -100,4 +90,3 @@ SpacesInCStyleCastParentheses: false
 SpacesInParentheses: false
 SpacesInSquareBrackets: false
 ...
-

.clang-tidy

@@ -0,0 +1,211 @@
+Checks: '-*,
+    misc-throw-by-value-catch-by-reference,
+    misc-misplaced-const,
+    misc-unconventional-assign-operator,
+    misc-redundant-expression,
+    misc-static-assert,
+    misc-unconventional-assign-operator,
+    misc-uniqueptr-reset-release,
+    misc-unused-alias-decls,
+    misc-unused-parameters,
+    misc-unused-using-decls,
+
+    modernize-avoid-bind,
+    modernize-loop-convert,
+    modernize-make-shared,
+    modernize-make-unique,
+    modernize-raw-string-literal,
+    modernize-redundant-void-arg,
+    modernize-replace-auto-ptr,
+    modernize-replace-random-shuffle,
+    modernize-use-auto,
+    modernize-use-bool-literals,
+    modernize-use-nullptr,
+    modernize-use-using,
+    modernize-use-override,
+    modernize-use-equals-default,
+    modernize-use-equals-delete,
+
+    performance-faster-string-find,
+    performance-for-range-copy,
+    performance-implicit-conversion-in-loop,
+    performance-inefficient-algorithm,
+    performance-inefficient-vector-operation,
+    performance-move-constructor-init,
+    performance-no-automatic-move,
+    performance-trivially-destructible,
+    performance-unnecessary-copy-initialization,
+
+    readability-avoid-const-params-in-decls,
+    readability-const-return-type,
+    readability-container-size-empty,
+    readability-convert-member-functions-to-static,
+    readability-delete-null-pointer,
+    readability-deleted-default,
+    readability-make-member-function-const,
+    readability-misplaced-array-index,
+    readability-non-const-parameter,
+    readability-qualified-auto,
+    readability-redundant-control-flow,
+    readability-redundant-function-ptr-dereference,
+    readability-redundant-smartptr-get,
+    readability-redundant-string-cstr,
+    readability-redundant-string-init,
+    readability-static-definition-in-anonymous-namespace,
+    readability-string-compare,
+    readability-uniqueptr-delete-release,
+    readability-redundant-member-init,
+    readability-simplify-subscript-expr,
+    readability-simplify-boolean-expr,
+    readability-inconsistent-declaration-parameter-name,
+    readability-identifier-naming,
+
+    bugprone-undelegated-constructor,
+    bugprone-argument-comment,
+    bugprone-bad-signal-to-kill-thread,
+    bugprone-bool-pointer-implicit-conversion,
+    bugprone-copy-constructor-init,
+    bugprone-dangling-handle,
+    bugprone-forward-declaration-namespace,
+    bugprone-fold-init-type,
+    bugprone-inaccurate-erase,
+    bugprone-incorrect-roundings,
+    bugprone-infinite-loop,
+    bugprone-integer-division,
+    bugprone-macro-parentheses,
+    bugprone-macro-repeated-side-effects,
+    bugprone-misplaced-operator-in-strlen-in-alloc,
+    bugprone-misplaced-pointer-artithmetic-in-alloc,
+    bugprone-misplaced-widening-cast,
+    bugprone-move-forwarding-reference,
+    bugprone-multiple-statement-macro,
+    bugprone-parent-virtual-call,
+    bugprone-posix-return,
+    bugprone-reserved-identifier,
+    bugprone-signed-char-misuse,
+    bugprone-sizeof-container,
+    bugprone-sizeof-expression,
+    bugprone-string-constructor,
+    bugprone-string-integer-assignment,
+    bugprone-string-literal-with-embedded-nul,
+    bugprone-suspicious-enum-usage,
+    bugprone-suspicious-include,
+    bugprone-suspicious-memset-usage,
+    bugprone-suspicious-missing-comma,
+    bugprone-suspicious-string-compare,
+    bugprone-swapped-arguments,
+    bugprone-terminating-continue,
+    bugprone-throw-keyword-missing,
+    bugprone-too-small-loop-variable,
+    bugprone-undefined-memory-manipulation,
+    bugprone-unhandled-self-assignment,
+    bugprone-unused-raii,
+    bugprone-unused-return-value,
+    bugprone-use-after-move,
+    bugprone-virtual-near-miss,
+
+    cert-dcl21-cpp,
+    cert-dcl50-cpp,
+    cert-env33-c,
+    cert-err34-c,
+    cert-err52-cpp,
+    cert-flp30-c,
+    cert-mem57-cpp,
+    cert-msc50-cpp,
+    cert-oop58-cpp,
+
+    google-build-explicit-make-pair,
+    google-build-namespaces,
+    google-default-arguments,
+    google-explicit-constructor,
+    google-readability-casting,
+    google-readability-avoid-underscore-in-googletest-name,
+    google-runtime-int,
+    google-runtime-operator,
+
+    hicpp-exception-baseclass,
+
+    clang-analyzer-core.CallAndMessage,
+    clang-analyzer-core.DivideZero,
+    clang-analyzer-core.NonNullParamChecker,
+    clang-analyzer-core.NullDereference,
+    clang-analyzer-core.StackAddressEscape,
+    clang-analyzer-core.UndefinedBinaryOperatorResult,
+    clang-analyzer-core.VLASize,
+    clang-analyzer-core.uninitialized.ArraySubscript,
+    clang-analyzer-core.uninitialized.Assign,
+    clang-analyzer-core.uninitialized.Branch,
+    clang-analyzer-core.uninitialized.CapturedBlockVariable,
+    clang-analyzer-core.uninitialized.UndefReturn,
+    clang-analyzer-cplusplus.InnerPointer,
+    clang-analyzer-cplusplus.NewDelete,
+    clang-analyzer-cplusplus.NewDeleteLeaks,
+    clang-analyzer-cplusplus.PlacementNewChecker,
+    clang-analyzer-cplusplus.SelfAssignment,
+    clang-analyzer-deadcode.DeadStores,
+    clang-analyzer-optin.cplusplus.VirtualCall,
+    clang-analyzer-security.insecureAPI.UncheckedReturn,
+    clang-analyzer-security.insecureAPI.bcmp,
+    clang-analyzer-security.insecureAPI.bcopy,
+    clang-analyzer-security.insecureAPI.bzero,
+    clang-analyzer-security.insecureAPI.getpw,
+    clang-analyzer-security.insecureAPI.gets,
+    clang-analyzer-security.insecureAPI.mkstemp,
+    clang-analyzer-security.insecureAPI.mktemp,
+    clang-analyzer-security.insecureAPI.rand,
+    clang-analyzer-security.insecureAPI.strcpy,
+    clang-analyzer-unix.Malloc,
+    clang-analyzer-unix.MallocSizeof,
+    clang-analyzer-unix.MismatchedDeallocator,
+    clang-analyzer-unix.Vfork,
+    clang-analyzer-unix.cstring.BadSizeArg,
+    clang-analyzer-unix.cstring.NullArg,
+
+    boost-use-to-string,
+
+    cppcoreguidelines-pro-type-cstyle-cast,
+    cppcoreguidelines-pro-type-member-init,
+    cppcoreguidelines-no-malloc,
+    cppcoreguidelines-virtual-class-destructor,
+'
+WarningsAsErrors: '*'
+
+CheckOptions:
+  - key: readability-identifier-naming.ClassCase
+    value: CamelCase
+  - key: readability-identifier-naming.EnumCase
+    value: CamelCase
+  - key: readability-identifier-naming.LocalVariableCase
+    value: lower_case
+  - key: readability-identifier-naming.StaticConstantCase
+    value: aNy_CasE
+  - key: readability-identifier-naming.MemberCase
+    value: lower_case
+  - key: readability-identifier-naming.PrivateMemberPrefix
+    value: ''
+  - key: readability-identifier-naming.ProtectedMemberPrefix
+    value: ''
+  - key: readability-identifier-naming.PublicMemberCase
+    value: lower_case
+  - key: readability-identifier-naming.MethodCase
+    value: camelBack
+  - key: readability-identifier-naming.PrivateMethodPrefix
+    value: ''
+  - key: readability-identifier-naming.ProtectedMethodPrefix
+    value: ''
+  - key: readability-identifier-naming.ParameterPackCase
+    value: lower_case
+  - key: readability-identifier-naming.StructCase
+    value: CamelCase
+  - key: readability-identifier-naming.TemplateTemplateParameterCase
+    value: CamelCase
+  - key: readability-identifier-naming.TemplateUsingCase
+    value: lower_case
+  - key: readability-identifier-naming.TypeTemplateParameterCase
+    value: CamelCase
+  - key: readability-identifier-naming.TypedefCase
+    value: CamelCase
+  - key: readability-identifier-naming.UnionCase
+    value: CamelCase
+  - key: readability-identifier-naming.UsingCase
+    value: CamelCase

.github/ISSUE_TEMPLATE/bug-report.md

@@ -0,0 +1,19 @@
+---
+name: "\U0001F41B Bug Report"
+about: As a User, I want to report a Bug.
+labels: type/bug
+---
+
+## Bug Report
+
+Please answer these questions before submitting your issue. Thanks!
+
+### 1. Minimal reproduce step (Required)
+
+<!-- a step by step guide for reproducing the bug. -->
+
+### 2. What did you expect to see? (Required)
+
+### 3. What did you see instead (Required)
+
+### 4. What is your TiFlash version? (Required)

.github/ISSUE_TEMPLATE/enhancement.md

@@ -0,0 +1,7 @@
+---
+name: "\U0001F680 Enhancement"
+about: As a TiFlash developer, I want to make an enhancement.
+labels: type/enhancement
+---
+
+## Enhancement