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papertrail.go
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papertrail.go
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// Copyright 2016 Documize Inc. <legal@documize.com>. All rights reserved.
//
// This software (Documize Community Edition) is licensed under
// GNU AGPL v3 http://www.gnu.org/licenses/agpl-3.0.en.html
//
// You can operate outside the AGPL restrictions by purchasing
// Documize Enterprise Edition and obtaining a commercial license
// by contacting <sales@documize.com>.
//
// https://documize.com
package papertrail
import (
"bytes"
"encoding/json"
"errors"
"fmt"
"html/template"
"io/ioutil"
"net/http"
"net/url"
"github.com/documize/community/core/log"
"github.com/documize/community/core/section/provider"
)
const me = "papertrail"
// Provider represents Gemini
type Provider struct {
}
// Meta describes us.
func (*Provider) Meta() provider.TypeMeta {
section := provider.TypeMeta{}
section.ID = "db0a3a0a-b5d4-4d00-bfac-ee28abba451d"
section.Title = "Papertrail"
section.Description = "Display log entries"
section.ContentType = "papertrail"
section.PageType = "tab"
return section
}
// Render converts Papertrail data into HTML suitable for browser rendering.
func (*Provider) Render(ctx *provider.Context, config, data string) string {
var search papertrailSearch
var events []papertrailEvent
var payload = papertrailRender{}
var c = papertrailConfig{}
json.Unmarshal([]byte(data), &search)
json.Unmarshal([]byte(config), &c)
c.APIToken = ctx.GetSecrets("APIToken")
max := len(search.Events)
if c.Max < max {
max = c.Max
}
events = search.Events[:max]
payload.Count = len(events)
payload.HasData = payload.Count > 0
payload.Events = events
payload.Config = c
payload.Authenticated = c.APIToken != ""
t := template.New("items")
t, _ = t.Parse(renderTemplate)
buffer := new(bytes.Buffer)
t.Execute(buffer, payload)
return buffer.String()
}
// Command handles authentication, workspace listing and items retrieval.
func (p *Provider) Command(ctx *provider.Context, w http.ResponseWriter, r *http.Request) {
query := r.URL.Query()
method := query.Get("method")
if len(method) == 0 {
provider.WriteMessage(w, me, "missing method name")
return
}
defer r.Body.Close()
body, err := ioutil.ReadAll(r.Body)
if err != nil {
provider.WriteMessage(w, me, "Bad payload")
return
}
var config = papertrailConfig{}
err = json.Unmarshal(body, &config)
if err != nil {
provider.WriteMessage(w, me, "Bad config")
return
}
config.Clean()
if config.APIToken == provider.SecretReplacement || config.APIToken == "" {
config.APIToken = ctx.GetSecrets("APIToken")
}
if len(config.APIToken) == 0 {
provider.WriteMessage(w, me, "Missing API token")
return
}
switch method {
case "auth":
auth(ctx, config, w, r)
case "options":
options(config, w, r)
}
}
// Refresh just sends back data as-is.
func (*Provider) Refresh(ctx *provider.Context, config, data string) (newData string) {
var c = papertrailConfig{}
err := json.Unmarshal([]byte(config), &c)
if err != nil {
log.Error("unable to read Papertrail config", err)
return
}
c.Clean()
c.APIToken = ctx.GetSecrets("APIToken")
if len(c.APIToken) == 0 {
log.Error("missing API token", err)
return
}
result, err := fetchEvents(c)
if err != nil {
log.Error("Papertrail fetchEvents failed", err)
return
}
j, err := json.Marshal(result)
if err != nil {
log.Error("unable to marshal Papaertrail events", err)
return
}
newData = string(j)
return
}
func auth(ctx *provider.Context, config papertrailConfig, w http.ResponseWriter, r *http.Request) {
result, err := fetchEvents(config)
if result == nil {
err = errors.New("nil result of papertrail query")
}
if err != nil {
log.IfErr(ctx.SaveSecrets(`{"APIToken":""}`)) // invalid token, so reset it
if err.Error() == "forbidden" {
provider.WriteForbidden(w)
} else {
provider.WriteError(w, me, err)
}
return
}
log.IfErr(ctx.SaveSecrets(`{"APIToken":"` + config.APIToken + `"}`))
provider.WriteJSON(w, result)
}
func options(config papertrailConfig, w http.ResponseWriter, r *http.Request) {
// get systems
req, err := http.NewRequest("GET", "https://papertrailapp.com/api/v1/systems.json", nil)
req.Header.Set("X-Papertrail-Token", config.APIToken)
client := &http.Client{}
res, err := client.Do(req)
if err != nil {
fmt.Println(err)
provider.WriteError(w, me, err)
return
}
if res.StatusCode != http.StatusOK {
provider.WriteForbidden(w)
return
}
defer res.Body.Close()
var systems []papertrailOption
dec := json.NewDecoder(res.Body)
err = dec.Decode(&systems)
if err != nil {
fmt.Println(err)
provider.WriteError(w, me, err)
return
}
// get groups
req, err = http.NewRequest("GET", "https://papertrailapp.com/api/v1/groups.json", nil)
req.Header.Set("X-Papertrail-Token", config.APIToken)
client = &http.Client{}
res, err = client.Do(req)
if err != nil {
fmt.Println(err)
provider.WriteError(w, me, err)
return
}
if res.StatusCode != http.StatusOK {
provider.WriteForbidden(w)
return
}
defer res.Body.Close()
var groups []papertrailOption
dec = json.NewDecoder(res.Body)
err = dec.Decode(&groups)
if err != nil {
fmt.Println(err)
provider.WriteError(w, me, err)
return
}
var options = papertrailOptions{}
options.Groups = groups
options.Systems = systems
provider.WriteJSON(w, options)
}
func fetchEvents(config papertrailConfig) (result interface{}, err error) {
var filter string
if len(config.Query) > 0 {
filter = fmt.Sprintf("q=%s", url.QueryEscape(config.Query))
}
if config.Group.ID > 0 {
prefix := ""
if len(filter) > 0 {
prefix = "&"
}
filter = fmt.Sprintf("%s%sgroup_id=%d", filter, prefix, config.Group.ID)
}
var req *http.Request
req, err = http.NewRequest("GET", "https://papertrailapp.com/api/v1/events/search.json?"+filter, nil)
if err != nil {
log.Error("new request", err)
return
}
req.Header.Set("X-Papertrail-Token", config.APIToken)
client := &http.Client{}
var res *http.Response
res, err = client.Do(req)
if err != nil {
log.Error("message", err)
return
}
if res.StatusCode != http.StatusOK {
log.Error("forbidden", err)
return
}
defer res.Body.Close()
dec := json.NewDecoder(res.Body)
err = dec.Decode(&result)
if err != nil {
log.Error("unable to read result", err)
}
return
}