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client.go
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client.go
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package adapter
import (
"bytes"
"encoding/json"
"fmt"
"io"
"io/ioutil"
"log"
"net/http"
"net/http/httputil"
"strings"
"github.com/cf-platform-eng/mongodb-on-demand-release/src/mongodb-service-adapter/digest"
"github.com/tidwall/gjson"
)
type OMClient struct {
Url string
Username string
ApiKey string
}
type Automation struct {
MongoDbVersions []MongoDbVersionsType
}
type MongoDbVersionsType struct {
Name string
}
type Group struct {
ID string `json:"id"`
Name string `json:"name"`
AgentAPIKey string `json:"agentApiKey"`
HostCounts map[string]int `json:"hostCounts"`
AuthAgentPassword string `json:"autoPwd"`
}
type GroupCreateRequest struct {
Name string `json:"name"`
OrgId string `json:"orgId,omitempty"`
Tags []string `json:"tags"`
}
type GroupUpdateRequest struct {
Tags []string `json:"tags"`
}
type GroupHosts struct {
TotalCount int `json:"totalCount"`
}
type DocContext struct {
ID string
Key string
AdminPassword string
AutomationAgentPassword string
Version string
CompatibilityVersion string
Nodes []string
Cluster *Cluster
Password string
RequireSSL bool
}
type Cluster struct {
Routers []string
ConfigServers []string
Shards [][]string
}
const versionsManifest = "/var/vcap/packages/versions/versions.json"
func (oc *OMClient) LoadDoc(p string, ctx *DocContext) (string, error) {
t, ok := plans[p]
if !ok {
return "", fmt.Errorf("plan %q not found", p)
}
if ctx.Password == "" {
var err error
ctx.Password, err = GenerateString(32)
if err != nil {
panic(err)
}
}
if strings.HasPrefix(ctx.Version, "3.4") {
ctx.CompatibilityVersion = "3.4"
} else if strings.HasPrefix(ctx.Version, "3.6") {
ctx.CompatibilityVersion = "3.6"
} else if strings.HasPrefix(ctx.Version, "4.0") {
ctx.CompatibilityVersion = "4.0"
}
b := bytes.Buffer{}
if err := t.Execute(&b, ctx); err != nil {
return "", err
}
return b.String(), nil
}
//GetGroupByName returns group if found.
func (oc *OMClient) GetGroupByName(name string) (Group, error) {
var group Group
b, err := oc.doRequest("GET", fmt.Sprintf("/api/public/v1.0/groups/byName/%s", name), nil)
if err != nil {
return group, err
}
if err = json.Unmarshal(b, &group); err != nil {
return group, err
}
return group, nil
}
func (oc *OMClient) CreateGroup(id string, request GroupCreateRequest) (Group, error) {
var group Group
if request.Name == "" {
request.Name = fmt.Sprintf("PCF_%s", strings.ToUpper(id))
}
req, err := json.Marshal(request)
if err != nil {
return group, err
}
group, err = oc.GetGroupByName(request.Name)
if err != nil {
return group, err
}
if group.Name == request.Name {
log.Printf("Continue with existing group %q", group.ID)
apiKey, err := oc.CreateGroupAPIKey(group.ID)
if err != nil {
return group, err
}
group.AgentAPIKey = apiKey
b, err := oc.doRequest("GET", fmt.Sprintf("/api/public/v1.0/groups/%s/automationConfig", group.ID), nil)
if err != nil {
return group, err
}
authPwd := gjson.GetBytes(b, "auth.autoPwd")
group.AuthAgentPassword = authPwd.String()
return group, nil
}
b, err := oc.doRequest("POST", "/api/public/v1.0/groups", bytes.NewReader(req))
if err != nil {
return group, err
}
if err = json.Unmarshal(b, &group); err != nil {
return group, err
}
return group, nil
}
func (oc *OMClient) CreateGroupAPIKey(groupID string) (string, error) {
desc := `{"desc": "MongoDB On-Demand broker generated Agent API Key"}`
b, err := oc.doRequest("POST", fmt.Sprintf("/api/public/v1.0/groups/%s/agentapikeys", groupID), strings.NewReader(desc))
if err != nil {
return "", fmt.Errorf("unable to create agent api key for group %q", groupID)
}
key := gjson.GetBytes(b, "key")
if key.String() == "" {
log.Fatalf("failed to create agent api key for group %s", groupID)
}
return key.String(), nil
}
func (oc *OMClient) UpdateGroup(id string, request GroupUpdateRequest) (Group, error) {
var group Group
req, err := json.Marshal(request)
if err != nil {
return group, err
}
b, err := oc.doRequest("PATCH", fmt.Sprintf("/api/public/v1.0/groups/%s", id), bytes.NewReader(req))
if err != nil {
return group, err
}
if err = json.Unmarshal(b, &group); err != nil {
return group, err
}
return group, nil
}
func (oc *OMClient) GetGroup(groupID string) (Group, error) {
var group Group
b, err := oc.doRequest("GET", fmt.Sprintf("/api/public/v1.0/groups/%s", groupID), nil)
if err != nil {
return group, err
}
if err = json.Unmarshal(b, &group); err != nil {
return group, err
}
return group, nil
}
func (oc *OMClient) DeleteGroup(groupID string) error {
_, err := oc.doRequest("DELETE", fmt.Sprintf("/api/public/v1.0/groups/%s", groupID), nil)
return err
}
func (oc *OMClient) GetGroupHosts(groupID string) (GroupHosts, error) {
var groupHosts GroupHosts
b, err := oc.doRequest("GET", fmt.Sprintf("/api/public/v1.0/groups/%s/hosts", groupID), nil)
if err != nil {
return groupHosts, err
}
if err = json.Unmarshal(b, &groupHosts); err != nil {
return groupHosts, err
}
return groupHosts, nil
}
func (oc *OMClient) GetGroupHostnames(groupID string, planID string) ([]string, error) {
b, err := oc.doRequest("GET", fmt.Sprintf("/api/public/v1.0/groups/%s/hosts", groupID), nil)
if err != nil {
return nil, err
}
groupHostnames := gjson.GetBytes(b, fmt.Sprintf(`results.#.hostname`))
if planID == "sharded_cluster" {
groupHostnames = gjson.GetBytes(b, fmt.Sprintf(`results.#[typeName="SHARD_MONGOS"]#.hostname`))
}
servers := make([]string, len(groupHostnames.Array()))
for i, node := range groupHostnames.Array() {
servers[i] = fmt.Sprintf("%s:28000", node)
}
return servers, nil
}
func (oc *OMClient) ConfigureGroup(configurationDoc string, groupID string) error {
u := fmt.Sprintf("/api/public/v1.0/groups/%s/automationConfig", groupID)
b, err := oc.doRequest("PUT", u, strings.NewReader(configurationDoc))
if err != nil {
return err
}
log.Println(string(b))
return nil
}
func (oc *OMClient) ConfigureMonitoringAgent(configurationDoc string, groupID string) error {
u := fmt.Sprintf("/api/public/v1.0/groups/%s/automationConfig/monitoringAgentConfig", groupID)
b, err := oc.doRequest("PUT", u, strings.NewReader(configurationDoc))
if err != nil {
return err
}
log.Println(string(b))
return nil
}
func (oc *OMClient) ConfigureBackupAgent(configurationDoc string, groupID string) error {
u := fmt.Sprintf("/api/public/v1.0/groups/%s/automationConfig/backupAgentConfig", groupID)
b, err := oc.doRequest("PUT", u, strings.NewReader(configurationDoc))
if err != nil {
return err
}
log.Println(string(b))
return nil
}
func (oc *OMClient) GetAvailableVersions(groupID string) (Automation, error) {
var versions Automation
b, err := oc.doRequest("GET", fmt.Sprintf("/api/public/v1.0/groups/%s/automationConfig", groupID), nil)
if err != nil {
return versions, err
}
if err = json.Unmarshal(b, &versions); err != nil {
return versions, err
}
return versions, nil
}
func (oc *OMClient) GetLatestVersion(groupID string) (string, error) {
cfg, err := oc.GetAvailableVersions(groupID)
if err != nil {
return "", fmt.Errorf("unable to find the latest MongoDB version from the MongoDB Ops Manager API. Please contact your system administrator to ensure versions are available in the Version Manager for group '%q' in MongoDB Ops Manager. If your MongoDB Ops Manager is running in Local Mode, then after validating versions are available, please indicate a specific MongoDB version using 'version’ paramater when calling 'create-service'", groupID)
}
if len(cfg.MongoDbVersions) == 0 {
return "", fmt.Errorf("unable to find the latest MongoDB version from the MongoDB Ops Manager API. Please contact your system administrator to ensure versions are available in the Version Manager for group '%q' in MongoDB Ops Manager. If your MongoDB Ops Manager is running in Local Mode, then after validating versions are available, please indicate a specific MongoDB version using 'version’ paramater when calling 'create-service'", groupID)
}
versions := make([]string, len(cfg.MongoDbVersions))
n := 0
for _, i := range cfg.MongoDbVersions {
if !strings.HasSuffix(i.Name, "ent") {
versions[n] = i.Name
n++
}
}
versions = versions[:n]
latestVersion := versions[len(versions)-1]
return latestVersion, nil
}
func (oc *OMClient) ValidateVersion(groupID string, version string) (string, error) {
b, err := oc.doRequest("GET", fmt.Sprintf("/api/public/v1.0/groups/%s/automationConfig", groupID), nil)
if err != nil {
return "", err
}
v := gjson.GetBytes(b, fmt.Sprintf(`mongoDbVersions.#[name="%s"].name`, version))
log.Printf("Using %q version of MongoDB", v.String())
if v.String() == "" {
log.Fatalf("failed to find expected version, got %s", version)
}
return v.String(), nil
}
func (oc *OMClient) ValidateVersionManifest(version string) (string, error) {
b, err := ioutil.ReadFile(versionsManifest)
if err != nil {
return "", err
}
v := gjson.GetBytes(b, fmt.Sprintf(`versions.#[name="%s"].name`, version))
log.Printf("Using %q version of MongoDB", v.String())
if v.String() == "" {
log.Printf("failed to find expected version, got %s, continue with provided versions", version)
}
return version, nil
}
func (oc *OMClient) doRequest(method string, path string, body io.Reader) ([]byte, error) {
uri := fmt.Sprintf("%s%s", oc.Url, path)
req, err := http.NewRequest(method, uri, body)
if err != nil {
return nil, err
}
req.Header.Set("Content-Type", "application/json")
if err = digest.ApplyDigestAuth(oc.Username, oc.ApiKey, uri, req); err != nil {
return nil, err
}
dump, err := httputil.DumpRequestOut(req, true)
if err != nil {
return nil, err
}
log.Printf("API Request: %q", dump)
res, err := http.DefaultClient.Do(req)
if err != nil {
log.Fatalf("%s %s error: %v", method, uri, err)
return nil, err
}
defer res.Body.Close()
dump, err = httputil.DumpResponse(res, true)
if err != nil {
return nil, err
}
log.Printf("API Response: %q", dump)
b, err := ioutil.ReadAll(res.Body)
if err != nil {
return nil, err
}
// oc.GetGroupByName return 404 if group not found
if res.StatusCode == 404 {
log.Printf("Received %d status code for %s path", res.StatusCode, path)
return b, nil
} else if res.StatusCode < 200 || res.StatusCode >= 300 {
return nil, fmt.Errorf("%s %s request error: code=%d body=%q", method, path, res.StatusCode, b)
}
return b, nil
}