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REST API Docs: Add Golang client code example

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(cherry picked from commit 4296622f526dfe17ffe9155430f38f39616288a4)
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Michael Friedrich 2019-03-26 09:46:36 +01:00
parent b188fa715c
commit cf9fe940d1
2 changed files with 77 additions and 4 deletions
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2
doc/02-getting-started.md
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@ -329,7 +329,7 @@ yum install nagios-plugins-all
``` ```
The packages for RHEL/CentOS depend on other packages which are distributed The packages for RHEL/CentOS depend on other packages which are distributed
as part of the [EPEL repository](#package-repositories-rhel-epel). as part of the [EPEL repository](02-getting-started.md#package-repositories-rhel-epel).
Fedora: Fedora:

79
doc/12-icinga2-api.md
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@ -2048,9 +2048,13 @@ Add the `--connect` parameter to debug and evaluate expressions via the API.
### API Clients Programmatic Examples <a id="icinga2-api-clients-programmatic-examples"></a> ### API Clients Programmatic Examples <a id="icinga2-api-clients-programmatic-examples"></a>
The programmatic examples use HTTP basic authentication and SSL certificate The following languages are covered:
verification. The CA file is expected in `pki/icinga2-ca.crt`
but you may adjust the examples for your likings. * [Python](12-icinga2-api.md#icinga2-api-clients-programmatic-examples-python)
* [Ruby](12-icinga2-api.md#icinga2-api-clients-programmatic-examples-ruby)
* [PHP](12-icinga2-api.md#icinga2-api-clients-programmatic-examples-php)
* [Perl](12-icinga2-api.md#icinga2-api-clients-programmatic-examples-perl)
* [Golang](12-icinga2-api.md#icinga2-api-clients-programmatic-examples-golang)
The [request method](icinga2-api-requests) is `POST` using The [request method](icinga2-api-requests) is `POST` using
[X-HTTP-Method-Override: GET](12-icinga2-api.md#icinga2-api-requests-method-override) [X-HTTP-Method-Override: GET](12-icinga2-api.md#icinga2-api-requests-method-override)
@ -2260,3 +2264,72 @@ if ($status == 200) {
$ perl icinga2-api-example.pl $ perl icinga2-api-example.pl
``` ```
#### Example API Client in Golang <a id="icinga2-api-clients-programmatic-examples-golang"></a>
Requires the Golang build chain.
```
$ vim icinga2-api-example.go
package main
import (
"bytes"
"crypto/tls"
"log"
"io/ioutil"
"net/http"
)
func main() {
var urlBase= "https://localhost:5665"
var apiUser= "root"
var apiPass= "icinga"
urlEndpoint := urlBase + "/v1/objects/services"
tr := &http.Transport{
TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
}
httpClient := &http.Client{Transport: tr}
var requestBody = []byte(`{
"attrs": [ "name", "state", "last_check_result" ],
"joins": [ "host.name", "host.state", "host.last_check_result" ],
"filter": "match(\"ping*\", service.name)"
}`)
req, err := http.NewRequest("POST", urlEndpoint, bytes.NewBuffer(requestBody))
req.Header.Set("Accept", "application/json")
req.Header.Set("X-HTTP-Method-Override", "GET")
req.SetBasicAuth(apiUser, apiPass)
resp, err := httpClient.Do(req)
if err != nil {
log.Fatal("Server error:", err)
return
}
defer resp.Body.Close()
log.Print("Response status:", resp.Status)
bodyBytes, _ := ioutil.ReadAll(resp.Body)
bodyString := string(bodyBytes)
if resp.StatusCode == http.StatusOK {
log.Print("Result: " + bodyString)
} else {
log.Fatal(bodyString)
}
}
```
Build the binary:
```
go build icinga2-api-example.go
./icinga2-api-example
```