netmaker/controllers/dns.go

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package controller
import (
"encoding/json"
"fmt"
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"net/http"
"github.com/gorilla/mux"
"github.com/gravitl/netmaker/database"
"github.com/gravitl/netmaker/logger"
"github.com/gravitl/netmaker/logic"
"github.com/gravitl/netmaker/models"
"github.com/gravitl/netmaker/mq"
"github.com/gravitl/netmaker/servercfg"
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)
func dnsHandlers(r *mux.Router) {
r.HandleFunc("/api/dns", securityCheck(true, http.HandlerFunc(getAllDNS))).Methods("GET")
r.HandleFunc("/api/dns/adm/{network}/nodes", securityCheck(false, http.HandlerFunc(getNodeDNS))).Methods("GET")
r.HandleFunc("/api/dns/adm/{network}/custom", securityCheck(false, http.HandlerFunc(getCustomDNS))).Methods("GET")
r.HandleFunc("/api/dns/adm/{network}", securityCheck(false, http.HandlerFunc(getDNS))).Methods("GET")
r.HandleFunc("/api/dns/{network}", securityCheck(false, http.HandlerFunc(createDNS))).Methods("POST")
r.HandleFunc("/api/dns/adm/pushdns", securityCheck(false, http.HandlerFunc(pushDNS))).Methods("POST")
r.HandleFunc("/api/dns/{network}/{domain}", securityCheck(false, http.HandlerFunc(deleteDNS))).Methods("DELETE")
}
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// swagger:route GET /api/dns/adm/{network}/nodes dns getNodeDNS
//
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// Gets node DNS entries associated with a network.
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//
// Schemes: https
//
// Security:
// oauth
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func getNodeDNS(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/json")
var dns []models.DNSEntry
var params = mux.Vars(r)
network := params["network"]
dns, err := logic.GetNodeDNS(network)
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if err != nil {
logger.Log(0, r.Header.Get("user"),
fmt.Sprintf("failed to get node DNS entries for network [%s]: %v", network, err))
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returnErrorResponse(w, r, formatError(err, "internal"))
return
}
w.WriteHeader(http.StatusOK)
json.NewEncoder(w).Encode(dns)
}
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// swagger:route GET /api/dns dns getAllDNS
//
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// Gets all DNS entries.
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//
// Schemes: https
//
// Security:
// oauth
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//
// Responses:
// 200: dnsResponse
//
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func getAllDNS(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/json")
dns, err := logic.GetAllDNS()
if err != nil {
logger.Log(0, r.Header.Get("user"), "failed to get all DNS entries: ", err.Error())
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returnErrorResponse(w, r, formatError(err, "internal"))
return
}
w.WriteHeader(http.StatusOK)
json.NewEncoder(w).Encode(dns)
}
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// swagger:route GET /api/dns/adm/{network}/custom dns getCustomDNS
//
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// Gets custom DNS entries associated with a network.
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//
// Schemes: https
//
// Security:
// oauth
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//
// Responses:
// 200: dnsResponse
//
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func getCustomDNS(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/json")
var dns []models.DNSEntry
var params = mux.Vars(r)
network := params["network"]
dns, err := logic.GetCustomDNS(network)
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if err != nil {
logger.Log(0, r.Header.Get("user"),
fmt.Sprintf("failed to get custom DNS entries for network [%s]: %v", network, err.Error()))
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returnErrorResponse(w, r, formatError(err, "internal"))
return
}
w.WriteHeader(http.StatusOK)
json.NewEncoder(w).Encode(dns)
}
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// swagger:route GET /api/dns/adm/{network} dns getDNS
//
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// Gets all DNS entries associated with the network.
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//
// Schemes: https
//
// Security:
// oauth
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//
// Responses:
// 200: dnsResponse
//
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func getDNS(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/json")
var dns []models.DNSEntry
var params = mux.Vars(r)
network := params["network"]
dns, err := logic.GetDNS(network)
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if err != nil {
logger.Log(0, r.Header.Get("user"),
fmt.Sprintf("failed to get all DNS entries for network [%s]: %v", network, err.Error()))
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returnErrorResponse(w, r, formatError(err, "internal"))
return
}
w.WriteHeader(http.StatusOK)
json.NewEncoder(w).Encode(dns)
}
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// swagger:route POST /api/dns/{network} dns createDNS
//
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// Create a DNS entry.
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//
// Schemes: https
//
// Security:
// oauth
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//
// Responses:
// 200: dnsResponse
//
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func createDNS(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/json")
var entry models.DNSEntry
var params = mux.Vars(r)
_ = json.NewDecoder(r.Body).Decode(&entry)
entry.Network = params["network"]
err := logic.ValidateDNSCreate(entry)
if err != nil {
logger.Log(0, r.Header.Get("user"),
fmt.Sprintf("invalid DNS entry %+v: %v", entry, err))
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returnErrorResponse(w, r, formatError(err, "badrequest"))
return
}
entry, err = CreateDNS(entry)
if err != nil {
logger.Log(0, r.Header.Get("user"),
fmt.Sprintf("Failed to create DNS entry %+v: %v", entry, err))
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returnErrorResponse(w, r, formatError(err, "internal"))
return
}
err = logic.SetDNS()
if err != nil {
logger.Log(0, r.Header.Get("user"),
fmt.Sprintf("Failed to set DNS entries on file: %v", err))
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returnErrorResponse(w, r, formatError(err, "internal"))
return
}
logger.Log(1, "new DNS record added:", entry.Name)
if servercfg.IsMessageQueueBackend() {
serverNode, err := logic.GetNetworkServerLocal(entry.Network)
if err != nil {
logger.Log(1, "failed to find server node after DNS update on", entry.Network)
} else {
if err = logic.ServerUpdate(&serverNode, false); err != nil {
logger.Log(1, "failed to update server node after DNS update on", entry.Network)
}
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if err = mq.PublishPeerUpdate(&serverNode, false); err != nil {
logger.Log(0, "failed to publish peer update after ACL update on", entry.Network)
}
}
}
logger.Log(2, r.Header.Get("user"),
fmt.Sprintf("DNS entry is set: %+v", entry))
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w.WriteHeader(http.StatusOK)
json.NewEncoder(w).Encode(entry)
}
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// swagger:route DELETE /api/dns/{network}/{domain} dns deleteDNS
//
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// Delete a DNS entry.
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//
// Schemes: https
//
// Security:
// oauth
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//
// Responses:
// 200: stringJSONResponse
// *: stringJSONResponse
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func deleteDNS(w http.ResponseWriter, r *http.Request) {
// Set header
w.Header().Set("Content-Type", "application/json")
// get params
var params = mux.Vars(r)
entrytext := params["domain"] + "." + params["network"]
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err := logic.DeleteDNS(params["domain"], params["network"])
if err != nil {
logger.Log(0, "failed to delete dns entry: ", entrytext)
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returnErrorResponse(w, r, formatError(err, "internal"))
return
}
logger.Log(1, "deleted dns entry: ", entrytext)
err = logic.SetDNS()
if err != nil {
logger.Log(0, r.Header.Get("user"),
fmt.Sprintf("Failed to set DNS entries on file: %v", err))
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returnErrorResponse(w, r, formatError(err, "internal"))
return
}
json.NewEncoder(w).Encode(entrytext + " deleted.")
}
// CreateDNS - creates a DNS entry
func CreateDNS(entry models.DNSEntry) (models.DNSEntry, error) {
data, err := json.Marshal(&entry)
if err != nil {
return models.DNSEntry{}, err
}
key, err := logic.GetRecordKey(entry.Name, entry.Network)
if err != nil {
return models.DNSEntry{}, err
}
err = database.Insert(key, string(data), database.DNS_TABLE_NAME)
return entry, err
}
// GetDNSEntry - gets a DNS entry
func GetDNSEntry(domain string, network string) (models.DNSEntry, error) {
var entry models.DNSEntry
key, err := logic.GetRecordKey(domain, network)
if err != nil {
return entry, err
}
record, err := database.FetchRecord(database.DNS_TABLE_NAME, key)
if err != nil {
return entry, err
}
err = json.Unmarshal([]byte(record), &entry)
return entry, err
}
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// swagger:route POST /api/dns/adm/pushdns dns pushDNS
//
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// Push DNS entries to nameserver.
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//
// Schemes: https
//
// Security:
// oauth
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//
// Responses:
// 200: dnsStringJSONResponse
// *: dnsStringJSONResponse
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func pushDNS(w http.ResponseWriter, r *http.Request) {
// Set header
w.Header().Set("Content-Type", "application/json")
err := logic.SetDNS()
if err != nil {
logger.Log(0, r.Header.Get("user"),
fmt.Sprintf("Failed to set DNS entries on file: %v", err))
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returnErrorResponse(w, r, formatError(err, "internal"))
return
}
logger.Log(1, r.Header.Get("user"), "pushed DNS updates to nameserver")
json.NewEncoder(w).Encode("DNS Pushed to CoreDNS")
}