fix(graphite): fixed minor graphite lexer issue when nodes begin with octal syntax and end with dash identifier, fixes #6049#

public/app/features/dashboard/submenu/submenu.html

@@ -2,7 +2,7 @@
   <div ng-repeat="variable in ctrl.variables" ng-hide="variable.hide === 2" class="submenu-item gf-form-inline">
     <div class="gf-form">
       <label class="gf-form-label template-variable" ng-hide="variable.hide === 1">
-        {{variable.label || variable.name}}:
+        {{variable.label || variable.name}}
       </label>
       <value-select-dropdown ng-if="variable.type !== 'adhoc'" variable="variable" on-updated="ctrl.variableUpdated(variable)" get-values-for-tag="ctrl.getValuesForTag(variable, tagKey)"></value-select-dropdown>
     </div>

public/app/plugins/datasource/graphite/lexer.ts

@@ -134,13 +134,7 @@ for (var i = 0; i < 128; i++) {
     i >= 97 && i <= 122;  // a-z
 }
 
-var identifierPartTable = [];
+var identifierPartTable = identifierStartTable;
-
-for (var i2 = 0; i2 < 128; i2++) {
-  identifierPartTable[i2] =
-    identifierStartTable[i2] || // $, _, A-Z, a-z
-    i2 >= 48 && i2 <= 57;        // 0-9
-}
 
 export function Lexer(expression) {
   this.input = expression;
@@ -490,7 +484,11 @@ Lexer.prototype = {
 
             if (isDecimalDigit(char)) {
               bad = true;
-              } else if (!isOctalDigit(char)) {
+            } if (!isOctalDigit(char)) {
+              // if the char is a non punctuator then its not a valid number
+              if (!this.isPunctuator(char)) {
+                return null;
+              }
               break;
             }
             value += char;
@@ -508,7 +506,7 @@ Lexer.prototype = {
             type: 'number',
             value: value,
             base: 8,
-              isMalformed: false
+            isMalformed: bad
           };
         }
 

public/app/plugins/datasource/graphite/parser.ts

@@ -100,10 +100,7 @@ Parser.prototype = {
   },
 
   metricExpression: function() {
-    if (!this.match('templateStart') &&
+    if (!this.match('templateStart') && !this.match('identifier') && !this.match('number') && !this.match('{')) {
-        !this.match('identifier') &&
-          !this.match('number') &&
-            !this.match('{')) {
       return null;
     }
 

public/app/plugins/datasource/graphite/specs/lexer_specs.ts

@@ -62,6 +62,14 @@ describe('when lexing graphite expression', function() {
     expect(tokens[4].type).to.be('identifier');
   });
 
+  it('should tokenize metric expression with segment that start with number', function() {
+    var lexer = new Lexer("metric.001-server");
+    var tokens = lexer.tokenize();
+    expect(tokens[0].type).to.be('identifier');
+    expect(tokens[2].type).to.be('identifier');
+    expect(tokens.length).to.be(3);
+  });
+
   it('should tokenize func call with numbered metric and number arg', function() {
     var lexer = new Lexer("scale(metric.10, 15)");
     var tokens = lexer.tokenize();