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node.go
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node.go
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/* Node object/class/whatever it is that Go calls them. */
/*
* Copyright (c) 2013-2014, Jeremy Bingham (<jbingham@gmail.com>)
*
* 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 node implements nodes. They do chef-client runs.
package node
import (
"github.com/ctdk/goiardi/config"
"github.com/ctdk/goiardi/data_store"
"github.com/ctdk/goiardi/util"
"github.com/ctdk/goiardi/indexer"
"fmt"
"net/http"
"database/sql"
)
type Node struct {
Name string `json:"name"`
ChefEnvironment string `json:"chef_environment"`
RunList []string `json:"run_list"`
JsonClass string `json:"json_class"`
ChefType string `json:"chef_type"`
Automatic map[string]interface{} `json:"automatic"`
Normal map[string]interface{} `json:"normal"`
Default map[string]interface{} `json:"default"`
Override map[string]interface{} `json:"override"`
}
func New(name string) (*Node, util.Gerror) {
/* check for an existing node with this name */
var found bool
if config.Config.UseMySQL {
// will need redone if orgs ever get implemented
var err error
found, err = checkForNodeMySQL(data_store.Dbh, name)
if err != nil {
gerr := util.Errorf(err.Error())
gerr.SetStatus(http.StatusInternalServerError)
return nil, gerr
}
} else {
ds := data_store.New()
_, found = ds.Get("node", name)
}
if found {
err := util.Errorf("Node %s already exists", name)
err.SetStatus(http.StatusConflict)
return nil, err
}
if !util.ValidateDBagName(name){
err := util.Errorf("Field 'name' invalid")
return nil, err
}
/* No node, we make a new one */
node := &Node{
Name: name,
ChefEnvironment: "_default",
ChefType: "node",
JsonClass: "Chef::Node",
RunList: []string{},
Automatic: map[string]interface{}{},
Normal: map[string]interface{}{},
Default: map[string]interface{}{},
Override: map[string]interface{}{},
}
return node, nil
}
// Create a new node from the uploaded JSON.
func NewFromJson(json_node map[string]interface{}) (*Node, util.Gerror){
node_name, nerr := util.ValidateAsString(json_node["name"])
if nerr != nil {
return nil, nerr
}
node, err := New(node_name)
if err != nil {
return nil, err
}
err = node.UpdateFromJson(json_node)
if err != nil {
return nil, err
}
return node, nil
}
func Get(node_name string) (*Node, error) {
var node *Node
var found bool
if config.Config.UseMySQL {
var err error
node, err = getMySQL(node_name)
if err != nil {
if err == sql.ErrNoRows {
found = false
} else {
return nil, err
}
} else {
found = true
}
} else {
ds := data_store.New()
var n interface{}
n, found = ds.Get("node", node_name)
if n != nil {
node = n.(*Node)
}
}
if !found {
err := fmt.Errorf("node '%s' not found", node_name)
return nil, err
}
return node, nil
}
// Update an existing node with the uploaded JSON.
func (n *Node) UpdateFromJson(json_node map[string]interface{}) util.Gerror {
/* It's actually totally legitimate to save a node with a different
* name than you started with, but we need to get/create a new node for
* it is all. */
node_name, nerr := util.ValidateAsString(json_node["name"])
if nerr != nil {
return nerr
}
if n.Name != node_name {
err := util.Errorf("Node name %s and %s from JSON do not match.", n.Name, node_name)
return err
}
/* Validations */
/* Look for invalid top level elements. *We* don't have to worry about
* them, but chef-pedant cares (probably because Chef <=10 stores
* json objects directly, dunno about Chef 11). */
valid_elements := []string{ "name", "json_class", "chef_type", "chef_environment", "run_list", "override", "normal", "default", "automatic" }
ValidElem:
for k, _ := range json_node {
for _, i := range valid_elements {
if k == i {
continue ValidElem
}
}
err := util.Errorf("Invalid key %s in request body", k)
return err
}
var verr util.Gerror
json_node["run_list"], verr = util.ValidateRunList(json_node["run_list"])
if verr != nil {
return verr
}
attrs := []string{ "normal", "automatic", "default", "override" }
for _, a := range attrs {
json_node[a], verr = util.ValidateAttributes(a, json_node[a])
if verr != nil {
return verr
}
}
json_node["chef_environment"], verr = util.ValidateAsFieldString(json_node["chef_environment"])
if verr != nil {
if verr.Error() == "Field 'name' nil" {
json_node["chef_environment"] = n.ChefEnvironment
} else {
return verr
}
} else {
if !util.ValidateEnvName(json_node["chef_environment"].(string)) {
verr = util.Errorf("Field 'chef_environment' invalid")
return verr
}
}
json_node["json_class"], verr = util.ValidateAsFieldString(json_node["json_class"])
if verr != nil {
if verr.Error() == "Field 'name' nil" {
json_node["json_class"] = n.JsonClass
} else {
return verr
}
} else {
if json_node["json_class"].(string) != "Chef::Node" {
verr = util.Errorf("Field 'json_class' invalid")
return verr
}
}
json_node["chef_type"], verr = util.ValidateAsFieldString(json_node["chef_type"])
if verr != nil {
if verr.Error() == "Field 'name' nil" {
json_node["chef_type"] = n.ChefType
} else {
return verr
}
} else {
if json_node["chef_type"].(string) != "node" {
verr = util.Errorf("Field 'chef_type' invalid")
return verr
}
}
/* and setting */
n.ChefEnvironment = json_node["chef_environment"].(string)
n.ChefType = json_node["chef_type"].(string)
n.JsonClass = json_node["json_class"].(string)
n.RunList = json_node["run_list"].([]string)
n.Normal = json_node["normal"].(map[string]interface{})
n.Automatic = json_node["automatic"].(map[string]interface{})
n.Default = json_node["default"].(map[string]interface{})
n.Override = json_node["override"].(map[string]interface{})
return nil
}
func (n *Node) Save() error {
if config.Config.UseMySQL {
if err := n.saveMySQL(); err != nil {
return err
}
} else {
ds := data_store.New()
ds.Set("node", n.Name, n)
}
/* TODO Later: excellent candidate for a goroutine */
indexer.IndexObj(n)
return nil
}
func (n *Node) Delete() error {
if config.Config.UseMySQL {
if err := n.deleteMySQL(); err != nil {
return err
}
} else {
ds := data_store.New()
ds.Delete("node", n.Name)
}
indexer.DeleteItemFromCollection("node", n.Name)
return nil
}
// Get a list of the nodes on this server.
func GetList() []string {
var node_list []string
if config.Config.UseMySQL {
node_list = getListMySQL()
} else {
ds := data_store.New()
node_list = ds.GetList("node")
}
return node_list
}
func GetFromEnv(env_name string) ([]*Node, error) {
if config.Config.UseMySQL {
return getNodesInEnvMySQL(env_name)
}
env_nodes := make([]*Node, 0)
node_list := GetList()
for _, n := range node_list {
chef_node, _ := Get(n)
if chef_node == nil {
continue
}
if chef_node.ChefEnvironment == env_name {
env_nodes = append(env_nodes, chef_node)
}
}
return env_nodes, nil
}
func (n *Node) GetName() string {
return n.Name
}
func (n *Node) URLType() string {
return "nodes"
}
/* Functions to support indexing */
func (n *Node) DocId() string {
return n.Name
}
func (n *Node) Index() string {
return "node"
}
func (n *Node) Flatten() []string {
flatten := util.FlattenObj(n)
indexified := util.Indexify(flatten)
return indexified
}