config/validate: add new config validator
This validator is still experimental and is going to need new rules in the future. This lays out the general framework.
This commit is contained in:
Alex Crawford
parent
51f37100a1
commit
055a3c339a
@ -1,3 +1,19 @@
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/*
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Copyright 2014 CoreOS, Inc.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package config
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import (
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@ -27,7 +27,7 @@ type Unit struct {
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Enable bool `yaml:"enable"`
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Runtime bool `yaml:"runtime"`
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Content string `yaml:"content"`
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Command string `yaml:"command"`
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Command string `yaml:"command" valid:"start,stop,restart,reload,try-restart,reload-or-restart,reload-or-try-restart"`
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// For drop-in units, a cloudinit.conf is generated.
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// This is currently unbound in YAML (and hence unsettable in cloud-config files)
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54
config/validate/context.go
Normal file
54
config/validate/context.go
Normal file
@ -0,0 +1,54 @@
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/*
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Copyright 2014 CoreOS, Inc.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package validate
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import (
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"strings"
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)
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// context represents the current position within a newline-delimited string.
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// Each line is loaded, one by one, into currentLine (newline omitted) and
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// lineNumber keeps track of its position within the original string.
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type context struct {
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currentLine string
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remainingLines string
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lineNumber int
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}
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// Increment moves the context to the next line (if available).
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func (c *context) Increment() {
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if c.currentLine == "" && c.remainingLines == "" {
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return
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}
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lines := strings.SplitN(c.remainingLines, "\n", 2)
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c.currentLine = lines[0]
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if len(lines) == 2 {
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c.remainingLines = lines[1]
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} else {
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c.remainingLines = ""
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}
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c.lineNumber++
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}
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// NewContext creates a context from the provided data. It strips out all
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// carriage returns and moves to the first line (if available).
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func NewContext(content []byte) context {
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c := context{remainingLines: strings.Replace(string(content), "\r", "", -1)}
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c.Increment()
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return c
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}
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133
config/validate/context_test.go
Normal file
133
config/validate/context_test.go
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@ -0,0 +1,133 @@
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/*
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Copyright 2014 CoreOS, Inc.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package validate
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import (
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"reflect"
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"testing"
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)
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func TestNewContext(t *testing.T) {
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tests := []struct {
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in string
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out context
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}{
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{
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out: context{
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currentLine: "",
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remainingLines: "",
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lineNumber: 0,
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},
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},
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{
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in: "this\r\nis\r\na\r\ntest",
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out: context{
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currentLine: "this",
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remainingLines: "is\na\ntest",
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lineNumber: 1,
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},
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},
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}
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for _, tt := range tests {
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if out := NewContext([]byte(tt.in)); !reflect.DeepEqual(tt.out, out) {
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t.Errorf("bad context (%q): want %#v, got %#v", tt.in, tt.out, out)
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}
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}
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}
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func TestIncrement(t *testing.T) {
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tests := []struct {
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init context
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op func(c *context)
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res context
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}{
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{
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init: context{
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currentLine: "",
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remainingLines: "",
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lineNumber: 0,
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},
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res: context{
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currentLine: "",
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remainingLines: "",
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lineNumber: 0,
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},
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op: func(c *context) {
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c.Increment()
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},
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},
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{
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init: context{
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currentLine: "test",
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remainingLines: "",
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lineNumber: 1,
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},
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res: context{
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currentLine: "",
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remainingLines: "",
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lineNumber: 2,
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},
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op: func(c *context) {
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c.Increment()
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c.Increment()
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c.Increment()
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},
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},
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{
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init: context{
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currentLine: "this",
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remainingLines: "is\na\ntest",
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lineNumber: 1,
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},
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res: context{
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currentLine: "is",
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remainingLines: "a\ntest",
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lineNumber: 2,
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},
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op: func(c *context) {
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c.Increment()
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},
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},
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{
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init: context{
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currentLine: "this",
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remainingLines: "is\na\ntest",
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lineNumber: 1,
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},
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res: context{
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currentLine: "test",
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remainingLines: "",
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lineNumber: 4,
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},
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op: func(c *context) {
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c.Increment()
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c.Increment()
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c.Increment()
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},
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},
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}
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for i, tt := range tests {
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res := tt.init
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if tt.op(&res); !reflect.DeepEqual(tt.res, res) {
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t.Errorf("bad context (%d, %#v): want %#v, got %#v", i, tt.init, tt.res, res)
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}
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}
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}
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159
config/validate/node.go
Normal file
159
config/validate/node.go
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@ -0,0 +1,159 @@
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/*
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Copyright 2014 CoreOS, Inc.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package validate
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import (
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"fmt"
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"reflect"
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"regexp"
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)
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var (
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yamlKey = regexp.MustCompile(`^ *-? ?(?P<key>.*?):`)
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yamlElem = regexp.MustCompile(`^ *-`)
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)
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type node struct {
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name string
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line int
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children []node
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field reflect.StructField
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reflect.Value
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}
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// Child attempts to find the child with the given name in the node's list of
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// children. If no such child is found, an invalid node is returned.
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func (n node) Child(name string) node {
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for _, c := range n.children {
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if c.name == name {
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return c
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}
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}
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return node{}
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}
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// HumanType returns the human-consumable string representation of the type of
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// the node.
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func (n node) HumanType() string {
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switch k := n.Kind(); k {
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case reflect.Slice:
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c := n.Type().Elem()
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return "[]" + node{Value: reflect.New(c).Elem()}.HumanType()
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default:
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return k.String()
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}
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}
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// NewNode returns the node representation of the given value. The context
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// will be used in an attempt to determine line numbers for the given value.
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func NewNode(value interface{}, context context) node {
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var n node
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toNode(value, context, &n)
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return n
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}
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// toNode converts the given value into a node and then recursively processes
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// each of the nodes components (e.g. fields, array elements, keys).
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func toNode(v interface{}, c context, n *node) {
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vv := reflect.ValueOf(v)
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if !vv.IsValid() {
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return
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}
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n.Value = vv
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switch vv.Kind() {
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case reflect.Struct:
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// Walk over each field in the structure, skipping unexported fields,
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// and create a node for it.
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for i := 0; i < vv.Type().NumField(); i++ {
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ft := vv.Type().Field(i)
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k := ft.Tag.Get("yaml")
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if k == "-" || k == "" {
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continue
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}
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cn := node{name: k, field: ft}
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c, ok := findKey(cn.name, c)
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if ok {
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cn.line = c.lineNumber
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}
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toNode(vv.Field(i).Interface(), c, &cn)
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n.children = append(n.children, cn)
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}
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case reflect.Map:
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// Walk over each key in the map and create a node for it.
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v := v.(map[interface{}]interface{})
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for k, cv := range v {
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cn := node{name: fmt.Sprintf("%s", k)}
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c, ok := findKey(cn.name, c)
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if ok {
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cn.line = c.lineNumber
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}
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toNode(cv, c, &cn)
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n.children = append(n.children, cn)
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}
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case reflect.Slice:
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// Walk over each element in the slice and create a node for it.
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// While iterating over the slice, preserve the context after it
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// is modified. This allows the line numbers to reflect the current
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// element instead of the first.
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for i := 0; i < vv.Len(); i++ {
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cn := node{
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name: fmt.Sprintf("%s[%d]", n.name, i),
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field: n.field,
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}
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var ok bool
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c, ok = findElem(c)
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if ok {
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cn.line = c.lineNumber
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}
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toNode(vv.Index(i).Interface(), c, &cn)
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n.children = append(n.children, cn)
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c.Increment()
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}
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case reflect.String, reflect.Int, reflect.Bool:
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default:
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panic(fmt.Sprintf("toNode(): unhandled kind %s", vv.Kind()))
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}
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}
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// findKey attempts to find the requested key within the provided context.
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// A modified copy of the context is returned with every line up to the key
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// incremented past. A boolean, true if the key was found, is also returned.
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func findKey(key string, context context) (context, bool) {
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return find(yamlKey, key, context)
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}
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// findElem attempts to find an array element within the provided context.
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// A modified copy of the context is returned with every line up to the array
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// element incremented past. A boolean, true if the key was found, is also
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// returned.
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func findElem(context context) (context, bool) {
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return find(yamlElem, "", context)
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}
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func find(exp *regexp.Regexp, key string, context context) (context, bool) {
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for len(context.currentLine) > 0 || len(context.remainingLines) > 0 {
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matches := exp.FindStringSubmatch(context.currentLine)
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if len(matches) > 0 && (key == "" || matches[1] == key) {
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return context, true
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}
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context.Increment()
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}
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return context, false
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}
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286
config/validate/node_test.go
Normal file
286
config/validate/node_test.go
Normal file
@ -0,0 +1,286 @@
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/*
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Copyright 2014 CoreOS, Inc.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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|
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
|
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
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See the License for the specific language governing permissions and
|
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limitations under the License.
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*/
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package validate
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import (
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"reflect"
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"testing"
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)
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func TestChild(t *testing.T) {
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tests := []struct {
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parent node
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name string
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child node
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}{
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{},
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{
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name: "c1",
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},
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{
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parent: node{
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children: []node{
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node{name: "c1"},
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node{name: "c2"},
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node{name: "c3"},
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},
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},
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},
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{
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parent: node{
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children: []node{
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node{name: "c1"},
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node{name: "c2"},
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node{name: "c3"},
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},
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},
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name: "c2",
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child: node{name: "c2"},
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},
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}
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for _, tt := range tests {
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if child := tt.parent.Child(tt.name); !reflect.DeepEqual(tt.child, child) {
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t.Errorf("bad child (%q): want %#v, got %#v", tt.name, tt.child, child)
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}
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}
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}
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func TestHumanType(t *testing.T) {
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tests := []struct {
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node node
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humanType string
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}{
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{
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humanType: "invalid",
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},
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{
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node: node{Value: reflect.ValueOf("hello")},
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humanType: "string",
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},
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{
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node: node{
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Value: reflect.ValueOf([]int{1, 2}),
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children: []node{
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node{Value: reflect.ValueOf(1)},
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node{Value: reflect.ValueOf(2)},
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}},
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humanType: "[]int",
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},
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}
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for _, tt := range tests {
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if humanType := tt.node.HumanType(); tt.humanType != humanType {
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t.Errorf("bad type (%q): want %q, got %q", tt.node, tt.humanType, humanType)
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}
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}
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}
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func TestToNode(t *testing.T) {
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tests := []struct {
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value interface{}
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context context
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node node
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}{
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{},
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{
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value: struct{}{},
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node: node{Value: reflect.ValueOf(struct{}{})},
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},
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{
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value: struct {
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A int `yaml:"a"`
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}{},
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node: node{
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children: []node{
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node{
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name: "a",
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field: reflect.TypeOf(struct {
|
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A int `yaml:"a"`
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}{}).Field(0),
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},
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},
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},
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},
|
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{
|
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value: struct {
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A []int `yaml:"a"`
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}{},
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node: node{
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children: []node{
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node{
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name: "a",
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field: reflect.TypeOf(struct {
|
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A []int `yaml:"a"`
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}{}).Field(0),
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},
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},
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},
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},
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{
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value: map[interface{}]interface{}{
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"a": map[interface{}]interface{}{
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"b": 2,
|
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},
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},
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context: NewContext([]byte("a:\n b: 2")),
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node: node{
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children: []node{
|
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node{
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line: 1,
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name: "a",
|
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children: []node{
|
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node{name: "b", line: 2},
|
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},
|
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},
|
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},
|
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},
|
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},
|
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{
|
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value: struct {
|
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A struct {
|
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Jon bool `yaml:"b"`
|
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} `yaml:"a"`
|
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}{},
|
||||
node: node{
|
||||
children: []node{
|
||||
node{
|
||||
name: "a",
|
||||
children: []node{
|
||||
node{
|
||||
name: "b",
|
||||
field: reflect.TypeOf(struct {
|
||||
Jon bool `yaml:"b"`
|
||||
}{}).Field(0),
|
||||
Value: reflect.ValueOf(false),
|
||||
},
|
||||
},
|
||||
field: reflect.TypeOf(struct {
|
||||
A struct {
|
||||
Jon bool `yaml:"b"`
|
||||
} `yaml:"a"`
|
||||
}{}).Field(0),
|
||||
Value: reflect.ValueOf(struct {
|
||||
Jon bool `yaml:"b"`
|
||||
}{}),
|
||||
},
|
||||
},
|
||||
Value: reflect.ValueOf(struct {
|
||||
A struct {
|
||||
Jon bool `yaml:"b"`
|
||||
} `yaml:"a"`
|
||||
}{}),
|
||||
},
|
||||
},
|
||||
}
|
||||
|
||||
for _, tt := range tests {
|
||||
var node node
|
||||
toNode(tt.value, tt.context, &node)
|
||||
if !nodesEqual(tt.node, node) {
|
||||
t.Errorf("bad node (%#v): want %#v, got %#v", tt.value, tt.node, node)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestFindKey(t *testing.T) {
|
||||
tests := []struct {
|
||||
key string
|
||||
context context
|
||||
|
||||
found bool
|
||||
}{
|
||||
{},
|
||||
{
|
||||
key: "key1",
|
||||
context: NewContext([]byte("key1: hi")),
|
||||
found: true,
|
||||
},
|
||||
{
|
||||
key: "key2",
|
||||
context: NewContext([]byte("key1: hi")),
|
||||
found: false,
|
||||
},
|
||||
{
|
||||
key: "key3",
|
||||
context: NewContext([]byte("key1:\n key2:\n key3: hi")),
|
||||
found: true,
|
||||
},
|
||||
{
|
||||
key: "key4",
|
||||
context: NewContext([]byte("key1:\n - key4: hi")),
|
||||
found: true,
|
||||
},
|
||||
{
|
||||
key: "key5",
|
||||
context: NewContext([]byte("#key5")),
|
||||
found: false,
|
||||
},
|
||||
}
|
||||
|
||||
for _, tt := range tests {
|
||||
if _, found := findKey(tt.key, tt.context); tt.found != found {
|
||||
t.Errorf("bad find (%q): want %t, got %t", tt.key, tt.found, found)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestFindElem(t *testing.T) {
|
||||
tests := []struct {
|
||||
context context
|
||||
|
||||
found bool
|
||||
}{
|
||||
{},
|
||||
{
|
||||
context: NewContext([]byte("test: hi")),
|
||||
found: false,
|
||||
},
|
||||
{
|
||||
context: NewContext([]byte("test:\n - a\n -b")),
|
||||
found: true,
|
||||
},
|
||||
{
|
||||
context: NewContext([]byte("test:\n -\n a")),
|
||||
found: true,
|
||||
},
|
||||
}
|
||||
|
||||
for _, tt := range tests {
|
||||
if _, found := findElem(tt.context); tt.found != found {
|
||||
t.Errorf("bad find (%q): want %t, got %t", tt.context, tt.found, found)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func nodesEqual(a, b node) bool {
|
||||
if a.name != b.name ||
|
||||
a.line != b.line ||
|
||||
!reflect.DeepEqual(a.field, b.field) ||
|
||||
len(a.children) != len(b.children) {
|
||||
return false
|
||||
}
|
||||
for i := 0; i < len(a.children); i++ {
|
||||
if !nodesEqual(a.children[i], b.children[i]) {
|
||||
return false
|
||||
}
|
||||
}
|
||||
return true
|
||||
}
|
||||
90
config/validate/report.go
Normal file
90
config/validate/report.go
Normal file
@ -0,0 +1,90 @@
|
||||
/*
|
||||
Copyright 2014 CoreOS, Inc.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
|
||||
package validate
|
||||
|
||||
import (
|
||||
"encoding/json"
|
||||
"fmt"
|
||||
)
|
||||
|
||||
// Report represents the list of entries resulting from validation.
|
||||
type Report struct {
|
||||
entries []Entry
|
||||
}
|
||||
|
||||
// Error adds an error entry to the report.
|
||||
func (r *Report) Error(line int, message string) {
|
||||
r.entries = append(r.entries, Entry{entryError, message, line})
|
||||
}
|
||||
|
||||
// Warning adds a warning entry to the report.
|
||||
func (r *Report) Warning(line int, message string) {
|
||||
r.entries = append(r.entries, Entry{entryWarning, message, line})
|
||||
}
|
||||
|
||||
// Info adds an info entry to the report.
|
||||
func (r *Report) Info(line int, message string) {
|
||||
r.entries = append(r.entries, Entry{entryInfo, message, line})
|
||||
}
|
||||
|
||||
// Entries returns the list of entries in the report.
|
||||
func (r *Report) Entries() []Entry {
|
||||
return r.entries
|
||||
}
|
||||
|
||||
// Entry represents a single generic item in the report.
|
||||
type Entry struct {
|
||||
kind entryKind
|
||||
message string
|
||||
line int
|
||||
}
|
||||
|
||||
// String returns a human-readable representation of the entry.
|
||||
func (e Entry) String() string {
|
||||
return fmt.Sprintf("line %d: %s: %s", e.line, e.kind, e.message)
|
||||
}
|
||||
|
||||
// MarshalJSON satisfies the json.Marshaler interface, returning the entry
|
||||
// encoded as a JSON object.
|
||||
func (e Entry) MarshalJSON() ([]byte, error) {
|
||||
return json.Marshal(map[string]interface{}{
|
||||
"kind": e.kind.String(),
|
||||
"message": e.message,
|
||||
"line": e.line,
|
||||
})
|
||||
}
|
||||
|
||||
type entryKind int
|
||||
|
||||
const (
|
||||
entryError entryKind = iota
|
||||
entryWarning
|
||||
entryInfo
|
||||
)
|
||||
|
||||
func (k entryKind) String() string {
|
||||
switch k {
|
||||
case entryError:
|
||||
return "error"
|
||||
case entryWarning:
|
||||
return "warning"
|
||||
case entryInfo:
|
||||
return "info"
|
||||
default:
|
||||
panic(fmt.Sprintf("invalid kind %d", k))
|
||||
}
|
||||
}
|
||||
98
config/validate/report_test.go
Normal file
98
config/validate/report_test.go
Normal file
@ -0,0 +1,98 @@
|
||||
/*
|
||||
Copyright 2014 CoreOS, Inc.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
|
||||
package validate
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"reflect"
|
||||
"testing"
|
||||
)
|
||||
|
||||
func TestEntry(t *testing.T) {
|
||||
tests := []struct {
|
||||
entry Entry
|
||||
|
||||
str string
|
||||
json []byte
|
||||
}{
|
||||
{
|
||||
Entry{entryInfo, "test info", 1},
|
||||
"line 1: info: test info",
|
||||
[]byte(`{"kind":"info","line":1,"message":"test info"}`),
|
||||
},
|
||||
{
|
||||
Entry{entryWarning, "test warning", 1},
|
||||
"line 1: warning: test warning",
|
||||
[]byte(`{"kind":"warning","line":1,"message":"test warning"}`),
|
||||
},
|
||||
{
|
||||
Entry{entryError, "test error", 2},
|
||||
"line 2: error: test error",
|
||||
[]byte(`{"kind":"error","line":2,"message":"test error"}`),
|
||||
},
|
||||
}
|
||||
|
||||
for _, tt := range tests {
|
||||
if str := tt.entry.String(); tt.str != str {
|
||||
t.Errorf("bad string (%q): want %q, got %q", tt.entry, tt.str, str)
|
||||
}
|
||||
json, err := tt.entry.MarshalJSON()
|
||||
if err != nil {
|
||||
t.Errorf("bad error (%q): want %v, got %q", tt.entry, nil, err)
|
||||
}
|
||||
if !bytes.Equal(tt.json, json) {
|
||||
t.Errorf("bad JSON (%q): want %q, got %q", tt.entry, tt.json, json)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestReport(t *testing.T) {
|
||||
type reportFunc struct {
|
||||
fn func(*Report, int, string)
|
||||
line int
|
||||
message string
|
||||
}
|
||||
|
||||
tests := []struct {
|
||||
fs []reportFunc
|
||||
|
||||
es []Entry
|
||||
}{
|
||||
{
|
||||
[]reportFunc{
|
||||
{(*Report).Warning, 1, "test warning 1"},
|
||||
{(*Report).Error, 2, "test error 2"},
|
||||
{(*Report).Info, 10, "test info 10"},
|
||||
},
|
||||
[]Entry{
|
||||
Entry{entryWarning, "test warning 1", 1},
|
||||
Entry{entryError, "test error 2", 2},
|
||||
Entry{entryInfo, "test info 10", 10},
|
||||
},
|
||||
},
|
||||
}
|
||||
|
||||
for _, tt := range tests {
|
||||
r := Report{}
|
||||
for _, f := range tt.fs {
|
||||
f.fn(&r, f.line, f.message)
|
||||
}
|
||||
if es := r.Entries(); !reflect.DeepEqual(tt.es, es) {
|
||||
t.Errorf("bad entries (%v): want %#v, got %#v", tt.fs, tt.es, es)
|
||||
}
|
||||
}
|
||||
}
|
||||
115
config/validate/rules.go
Normal file
115
config/validate/rules.go
Normal file
@ -0,0 +1,115 @@
|
||||
/*
|
||||
Copyright 2014 CoreOS, Inc.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
|
||||
package validate
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"reflect"
|
||||
|
||||
"github.com/coreos/coreos-cloudinit/config"
|
||||
)
|
||||
|
||||
type rule func(config node, report *Report)
|
||||
|
||||
// Rules contains all of the validation rules.
|
||||
var Rules []rule = []rule{
|
||||
checkStructure,
|
||||
checkValidity,
|
||||
}
|
||||
|
||||
// checkStructure compares the provided config to the empty config.CloudConfig
|
||||
// structure. Each node is checked to make sure that it exists in the known
|
||||
// structure and that its type is compatible.
|
||||
func checkStructure(cfg node, report *Report) {
|
||||
g := NewNode(config.CloudConfig{}, NewContext([]byte{}))
|
||||
checkNodeStructure(cfg, g, report)
|
||||
}
|
||||
|
||||
func checkNodeStructure(n, g node, r *Report) {
|
||||
if !isCompatible(n.Kind(), g.Kind()) {
|
||||
r.Warning(n.line, fmt.Sprintf("incorrect type for %q (want %s)", n.name, g.HumanType()))
|
||||
return
|
||||
}
|
||||
|
||||
switch g.Kind() {
|
||||
case reflect.Struct:
|
||||
for _, cn := range n.children {
|
||||
if cg := g.Child(cn.name); cg.IsValid() {
|
||||
checkNodeStructure(cn, cg, r)
|
||||
} else {
|
||||
r.Warning(cn.line, fmt.Sprintf("unrecognized key %q", cn.name))
|
||||
}
|
||||
}
|
||||
case reflect.Slice:
|
||||
for _, cn := range n.children {
|
||||
var cg node
|
||||
c := g.Type().Elem()
|
||||
toNode(reflect.New(c).Elem().Interface(), context{}, &cg)
|
||||
checkNodeStructure(cn, cg, r)
|
||||
}
|
||||
case reflect.String, reflect.Int, reflect.Bool:
|
||||
default:
|
||||
panic(fmt.Sprintf("checkNodeStructure(): unhandled kind %s", g.Kind()))
|
||||
}
|
||||
}
|
||||
|
||||
// checkValidity checks the value of every node in the provided config by
|
||||
// running config.AssertValid() on it.
|
||||
func checkValidity(cfg node, report *Report) {
|
||||
g := NewNode(config.CloudConfig{}, NewContext([]byte{}))
|
||||
checkNodeValidity(cfg, g, report)
|
||||
}
|
||||
|
||||
func checkNodeValidity(n, g node, r *Report) {
|
||||
if err := config.AssertValid(n.Value, g.field.Tag.Get("valid")); err != nil {
|
||||
r.Warning(n.line, fmt.Sprintf("invalid value %v", n.Value))
|
||||
}
|
||||
switch g.Kind() {
|
||||
case reflect.Struct:
|
||||
for _, cn := range n.children {
|
||||
if cg := g.Child(cn.name); cg.IsValid() {
|
||||
checkNodeValidity(cn, cg, r)
|
||||
}
|
||||
}
|
||||
case reflect.Slice:
|
||||
for _, cn := range n.children {
|
||||
var cg node
|
||||
c := g.Type().Elem()
|
||||
toNode(reflect.New(c).Elem().Interface(), context{}, &cg)
|
||||
checkNodeValidity(cn, cg, r)
|
||||
}
|
||||
case reflect.String, reflect.Int, reflect.Bool:
|
||||
default:
|
||||
panic(fmt.Sprintf("checkNodeValidity(): unhandled kind %s", g.Kind()))
|
||||
}
|
||||
}
|
||||
|
||||
// isCompatible determines if the type of kind n can be converted to the type
|
||||
// of kind g in the context of YAML. This is not an exhaustive list, but its
|
||||
// enough for the purposes of cloud-config validation.
|
||||
func isCompatible(n, g reflect.Kind) bool {
|
||||
switch g {
|
||||
case reflect.String:
|
||||
return n == reflect.String || n == reflect.Int || n == reflect.Bool
|
||||
case reflect.Struct:
|
||||
return n == reflect.Struct || n == reflect.Map
|
||||
case reflect.Bool, reflect.Slice:
|
||||
return n == g
|
||||
default:
|
||||
panic(fmt.Sprintf("isCompatible(): unhandled kind %s", g))
|
||||
}
|
||||
}
|
||||
251
config/validate/rules_test.go
Normal file
251
config/validate/rules_test.go
Normal file
@ -0,0 +1,251 @@
|
||||
/*
|
||||
Copyright 2014 CoreOS, Inc.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
|
||||
package validate
|
||||
|
||||
import (
|
||||
"reflect"
|
||||
"testing"
|
||||
)
|
||||
|
||||
func TestCheckStructure(t *testing.T) {
|
||||
tests := []struct {
|
||||
config string
|
||||
|
||||
entries []Entry
|
||||
}{
|
||||
{},
|
||||
|
||||
// Test for unrecognized keys
|
||||
{
|
||||
config: "test:",
|
||||
entries: []Entry{{entryWarning, "unrecognized key \"test\"", 1}},
|
||||
},
|
||||
{
|
||||
config: "coreos:\n etcd:\n bad:",
|
||||
entries: []Entry{{entryWarning, "unrecognized key \"bad\"", 3}},
|
||||
},
|
||||
{
|
||||
config: "coreos:\n etcd:\n discovery: good",
|
||||
},
|
||||
|
||||
// Test for error on list of nodes
|
||||
{
|
||||
config: "coreos:\n units:\n - hello\n - goodbye",
|
||||
entries: []Entry{
|
||||
{entryWarning, "incorrect type for \"units[0]\" (want struct)", 3},
|
||||
{entryWarning, "incorrect type for \"units[1]\" (want struct)", 4},
|
||||
},
|
||||
},
|
||||
|
||||
// Test for incorrect types
|
||||
// Want boolean
|
||||
{
|
||||
config: "coreos:\n units:\n - enable: true",
|
||||
},
|
||||
{
|
||||
config: "coreos:\n units:\n - enable: 4",
|
||||
entries: []Entry{{entryWarning, "incorrect type for \"enable\" (want bool)", 3}},
|
||||
},
|
||||
{
|
||||
config: "coreos:\n units:\n - enable: bad",
|
||||
entries: []Entry{{entryWarning, "incorrect type for \"enable\" (want bool)", 3}},
|
||||
},
|
||||
{
|
||||
config: "coreos:\n units:\n - enable:\n bad:",
|
||||
entries: []Entry{{entryWarning, "incorrect type for \"enable\" (want bool)", 3}},
|
||||
},
|
||||
{
|
||||
config: "coreos:\n units:\n - enable:\n - bad",
|
||||
entries: []Entry{{entryWarning, "incorrect type for \"enable\" (want bool)", 3}},
|
||||
},
|
||||
// Want string
|
||||
{
|
||||
config: "hostname: true",
|
||||
},
|
||||
{
|
||||
config: "hostname: 4",
|
||||
},
|
||||
{
|
||||
config: "hostname: host",
|
||||
},
|
||||
{
|
||||
config: "hostname:\n name:",
|
||||
entries: []Entry{{entryWarning, "incorrect type for \"hostname\" (want string)", 1}},
|
||||
},
|
||||
{
|
||||
config: "hostname:\n - name",
|
||||
entries: []Entry{{entryWarning, "incorrect type for \"hostname\" (want string)", 1}},
|
||||
},
|
||||
// Want struct
|
||||
{
|
||||
config: "coreos: true",
|
||||
entries: []Entry{{entryWarning, "incorrect type for \"coreos\" (want struct)", 1}},
|
||||
},
|
||||
{
|
||||
config: "coreos: 4",
|
||||
entries: []Entry{{entryWarning, "incorrect type for \"coreos\" (want struct)", 1}},
|
||||
},
|
||||
{
|
||||
config: "coreos: hello",
|
||||
entries: []Entry{{entryWarning, "incorrect type for \"coreos\" (want struct)", 1}},
|
||||
},
|
||||
{
|
||||
config: "coreos:\n etcd:\n discovery: fire in the disco",
|
||||
},
|
||||
{
|
||||
config: "coreos:\n - hello",
|
||||
entries: []Entry{{entryWarning, "incorrect type for \"coreos\" (want struct)", 1}},
|
||||
},
|
||||
// Want []string
|
||||
{
|
||||
config: "ssh_authorized_keys: true",
|
||||
entries: []Entry{{entryWarning, "incorrect type for \"ssh_authorized_keys\" (want []string)", 1}},
|
||||
},
|
||||
{
|
||||
config: "ssh_authorized_keys: 4",
|
||||
entries: []Entry{{entryWarning, "incorrect type for \"ssh_authorized_keys\" (want []string)", 1}},
|
||||
},
|
||||
{
|
||||
config: "ssh_authorized_keys: key",
|
||||
entries: []Entry{{entryWarning, "incorrect type for \"ssh_authorized_keys\" (want []string)", 1}},
|
||||
},
|
||||
{
|
||||
config: "ssh_authorized_keys:\n key: value",
|
||||
entries: []Entry{{entryWarning, "incorrect type for \"ssh_authorized_keys\" (want []string)", 1}},
|
||||
},
|
||||
{
|
||||
config: "ssh_authorized_keys:\n - key",
|
||||
},
|
||||
{
|
||||
config: "ssh_authorized_keys:\n - key: value",
|
||||
entries: []Entry{{entryWarning, "incorrect type for \"ssh_authorized_keys[0]\" (want string)", 2}},
|
||||
},
|
||||
// Want []struct
|
||||
{
|
||||
config: "users:\n true",
|
||||
entries: []Entry{{entryWarning, "incorrect type for \"users\" (want []struct)", 1}},
|
||||
},
|
||||
{
|
||||
config: "users:\n 4",
|
||||
entries: []Entry{{entryWarning, "incorrect type for \"users\" (want []struct)", 1}},
|
||||
},
|
||||
{
|
||||
config: "users:\n bad",
|
||||
entries: []Entry{{entryWarning, "incorrect type for \"users\" (want []struct)", 1}},
|
||||
},
|
||||
{
|
||||
config: "users:\n bad:",
|
||||
entries: []Entry{{entryWarning, "incorrect type for \"users\" (want []struct)", 1}},
|
||||
},
|
||||
{
|
||||
config: "users:\n - name: good",
|
||||
},
|
||||
// Want struct within array
|
||||
{
|
||||
config: "users:\n - true",
|
||||
entries: []Entry{{entryWarning, "incorrect type for \"users[0]\" (want struct)", 2}},
|
||||
},
|
||||
{
|
||||
config: "users:\n - name: hi\n - true",
|
||||
entries: []Entry{{entryWarning, "incorrect type for \"users[1]\" (want struct)", 3}},
|
||||
},
|
||||
{
|
||||
config: "users:\n - 4",
|
||||
entries: []Entry{{entryWarning, "incorrect type for \"users[0]\" (want struct)", 2}},
|
||||
},
|
||||
{
|
||||
config: "users:\n - bad",
|
||||
entries: []Entry{{entryWarning, "incorrect type for \"users[0]\" (want struct)", 2}},
|
||||
},
|
||||
{
|
||||
config: "users:\n - - bad",
|
||||
entries: []Entry{{entryWarning, "incorrect type for \"users[0]\" (want struct)", 2}},
|
||||
},
|
||||
}
|
||||
|
||||
for i, tt := range tests {
|
||||
r := Report{}
|
||||
n, err := parseCloudConfig([]byte(tt.config), &r)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
checkStructure(n, &r)
|
||||
|
||||
if e := r.Entries(); !reflect.DeepEqual(tt.entries, e) {
|
||||
t.Errorf("bad report (%d, %q): want %#v, got %#v", i, tt.config, tt.entries, e)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestCheckValidity(t *testing.T) {
|
||||
tests := []struct {
|
||||
config string
|
||||
|
||||
entries []Entry
|
||||
}{
|
||||
// string
|
||||
{
|
||||
config: "hostname: test",
|
||||
},
|
||||
|
||||
// int
|
||||
{
|
||||
config: "coreos:\n fleet:\n verbosity: 2",
|
||||
},
|
||||
|
||||
// bool
|
||||
{
|
||||
config: "coreos:\n units:\n - enable: true",
|
||||
},
|
||||
|
||||
// slice
|
||||
{
|
||||
config: "coreos:\n units:\n - command: start\n - name: stop",
|
||||
},
|
||||
{
|
||||
config: "coreos:\n units:\n - command: lol",
|
||||
entries: []Entry{{entryWarning, "invalid value lol", 3}},
|
||||
},
|
||||
|
||||
// struct
|
||||
{
|
||||
config: "coreos:\n update:\n reboot_strategy: off",
|
||||
},
|
||||
{
|
||||
config: "coreos:\n update:\n reboot_strategy: always",
|
||||
entries: []Entry{{entryWarning, "invalid value always", 3}},
|
||||
},
|
||||
|
||||
// unknown
|
||||
{
|
||||
config: "unknown: hi",
|
||||
},
|
||||
}
|
||||
|
||||
for i, tt := range tests {
|
||||
r := Report{}
|
||||
n, err := parseCloudConfig([]byte(tt.config), &r)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
checkValidity(n, &r)
|
||||
|
||||
if e := r.Entries(); !reflect.DeepEqual(tt.entries, e) {
|
||||
t.Errorf("bad report (%d, %q): want %#v, got %#v", i, tt.config, tt.entries, e)
|
||||
}
|
||||
}
|
||||
}
|
||||
113
config/validate/validate.go
Normal file
113
config/validate/validate.go
Normal file
@ -0,0 +1,113 @@
|
||||
/*
|
||||
Copyright 2014 CoreOS, Inc.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
|
||||
package validate
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
"regexp"
|
||||
"strconv"
|
||||
"strings"
|
||||
|
||||
"github.com/coreos/coreos-cloudinit/config"
|
||||
|
||||
"github.com/coreos/coreos-cloudinit/Godeps/_workspace/src/gopkg.in/yaml.v1"
|
||||
)
|
||||
|
||||
var (
|
||||
yamlLineError = regexp.MustCompile(`^YAML error: line (?P<line>[[:digit:]]+): (?P<msg>.*)$`)
|
||||
yamlError = regexp.MustCompile(`^YAML error: (?P<msg>.*)$`)
|
||||
)
|
||||
|
||||
// Validate runs a series of validation tests against the given userdata and
|
||||
// returns a report detailing all of the issues. Presently, only cloud-configs
|
||||
// can be validated.
|
||||
func Validate(userdataBytes []byte) (Report, error) {
|
||||
switch {
|
||||
case config.IsScript(string(userdataBytes)):
|
||||
return Report{}, nil
|
||||
case config.IsCloudConfig(string(userdataBytes)):
|
||||
return validateCloudConfig(userdataBytes, Rules)
|
||||
default:
|
||||
return Report{entries: []Entry{
|
||||
Entry{kind: entryError, message: `must be "#cloud-config" or begin with "#!"`},
|
||||
}}, nil
|
||||
}
|
||||
}
|
||||
|
||||
// validateCloudConfig runs all of the validation rules in Rules and returns
|
||||
// the resulting report and any errors encountered.
|
||||
func validateCloudConfig(config []byte, rules []rule) (report Report, err error) {
|
||||
defer func() {
|
||||
if r := recover(); r != nil {
|
||||
err = fmt.Errorf("%v", r)
|
||||
}
|
||||
}()
|
||||
|
||||
c, err := parseCloudConfig(config, &report)
|
||||
if err != nil {
|
||||
return report, err
|
||||
}
|
||||
|
||||
c = normalizeNodeNames(c, &report)
|
||||
for _, r := range rules {
|
||||
r(c, &report)
|
||||
}
|
||||
return report, nil
|
||||
}
|
||||
|
||||
// parseCloudConfig parses the provided config into a node structure and logs
|
||||
// any parsing issues into the provided report. Unrecoverable errors are
|
||||
// returned as an error.
|
||||
func parseCloudConfig(config []byte, report *Report) (n node, err error) {
|
||||
var raw map[interface{}]interface{}
|
||||
if err := yaml.Unmarshal(config, &raw); err != nil {
|
||||
matches := yamlLineError.FindStringSubmatch(err.Error())
|
||||
if len(matches) == 3 {
|
||||
line, err := strconv.Atoi(matches[1])
|
||||
if err != nil {
|
||||
return n, err
|
||||
}
|
||||
msg := matches[2]
|
||||
report.Error(line, msg)
|
||||
return n, nil
|
||||
}
|
||||
|
||||
matches = yamlError.FindStringSubmatch(err.Error())
|
||||
if len(matches) == 2 {
|
||||
report.Error(1, matches[1])
|
||||
return n, nil
|
||||
}
|
||||
|
||||
return n, errors.New("couldn't parse yaml error")
|
||||
}
|
||||
|
||||
return NewNode(raw, NewContext(config)), nil
|
||||
}
|
||||
|
||||
// normalizeNodeNames replaces all occurences of '-' with '_' within key names
|
||||
// and makes a note of each replacement in the report.
|
||||
func normalizeNodeNames(node node, report *Report) node {
|
||||
if strings.Contains(node.name, "-") {
|
||||
report.Info(node.line, fmt.Sprintf("%q uses '-' instead of '_'", node.name))
|
||||
node.name = strings.Replace(node.name, "-", "_", -1)
|
||||
}
|
||||
for i := range node.children {
|
||||
node.children[i] = normalizeNodeNames(node.children[i], report)
|
||||
}
|
||||
return node
|
||||
}
|
||||
121
config/validate/validate_test.go
Normal file
121
config/validate/validate_test.go
Normal file
@ -0,0 +1,121 @@
|
||||
/*
|
||||
Copyright 2014 CoreOS, Inc.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
|
||||
package validate
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"reflect"
|
||||
"testing"
|
||||
)
|
||||
|
||||
func TestParseCloudConfig(t *testing.T) {
|
||||
tests := []struct {
|
||||
config string
|
||||
|
||||
entries []Entry
|
||||
}{
|
||||
{},
|
||||
{
|
||||
config: " ",
|
||||
entries: []Entry{{entryError, "found character that cannot start any token", 1}},
|
||||
},
|
||||
{
|
||||
config: "a:\na",
|
||||
entries: []Entry{{entryError, "could not find expected ':'", 2}},
|
||||
},
|
||||
{
|
||||
config: "#hello\na:\na",
|
||||
entries: []Entry{{entryError, "could not find expected ':'", 3}},
|
||||
},
|
||||
}
|
||||
|
||||
for _, tt := range tests {
|
||||
r := Report{}
|
||||
parseCloudConfig([]byte(tt.config), &r)
|
||||
|
||||
if e := r.Entries(); !reflect.DeepEqual(tt.entries, e) {
|
||||
t.Errorf("bad report (%s): want %#v, got %#v", tt.config, tt.entries, e)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestValidateCloudConfig(t *testing.T) {
|
||||
tests := []struct {
|
||||
config string
|
||||
rules []rule
|
||||
|
||||
report Report
|
||||
err error
|
||||
}{
|
||||
{
|
||||
rules: []rule{func(_ node, _ *Report) { panic("something happened") }},
|
||||
err: errors.New("something happened"),
|
||||
},
|
||||
}
|
||||
|
||||
for _, tt := range tests {
|
||||
r, err := validateCloudConfig([]byte(tt.config), tt.rules)
|
||||
if !reflect.DeepEqual(tt.err, err) {
|
||||
t.Errorf("bad error (%s): want %v, got %v", tt.config, tt.err, err)
|
||||
}
|
||||
if !reflect.DeepEqual(tt.report, r) {
|
||||
t.Errorf("bad report (%s): want %+v, got %+v", tt.config, tt.report, r)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func BenchmarkValidate(b *testing.B) {
|
||||
config := `#cloud-config
|
||||
hostname: test
|
||||
|
||||
coreos:
|
||||
etcd:
|
||||
name: node001
|
||||
discovery: https://discovery.etcd.io/disco
|
||||
addr: $public_ipv4:4001
|
||||
peer-addr: $private_ipv4:7001
|
||||
fleet:
|
||||
verbosity: 2
|
||||
metadata: "hi"
|
||||
update:
|
||||
reboot-strategy: off
|
||||
units:
|
||||
- name: hi.service
|
||||
command: start
|
||||
enable: true
|
||||
- name: bye.service
|
||||
command: stop
|
||||
|
||||
ssh_authorized_keys:
|
||||
- ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC0g+ZTxC7weoIJLUafOgrm+h...
|
||||
- ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC0g+ZTxC7weoIJLUafOgrm+h...
|
||||
|
||||
users:
|
||||
- name: me
|
||||
|
||||
write_files:
|
||||
- path: /etc/yes
|
||||
content: "Hi"
|
||||
|
||||
manage_etc_hosts: localhost`
|
||||
|
||||
for i := 0; i < b.N; i++ {
|
||||
if _, err := Validate([]byte(config)); err != nil {
|
||||
panic(err)
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user