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package netbox
import (
"context"
"encoding/json"
"fmt"
"io"
"net"
"net/http"
"net/url"
"strconv"
"code.crute.us/mcrute/golib/vault"
)
type NetboxClient interface {
GetSitePrefixesWithTag(ctx context.Context, site string, tag string) ([]*net.IPNet, error)
GetPrefixesWithTag(ctx context.Context, tag string) ([]*net.IPNet, error)
}
func NewNetboxClient(endpoint string, vault vault.VaultClient, vaultMaterial string) NetboxClient {
return &netboxClient{
endpoint: endpoint,
vault: vault,
vaultMaterial: vaultMaterial,
}
}
type netboxClient struct {
vault vault.VaultClient
endpoint string
vaultMaterial string
}
func (c *netboxClient) makeRequestRaw(ctx context.Context, method, u string, ib io.Reader, o interface{}) error {
apiKey, err := c.vault.KVApiKey(ctx, c.vaultMaterial)
if err != nil {
return err
}
req, err := http.NewRequestWithContext(ctx, method, u, ib)
if err != nil {
return err
}
req.Header.Add("Authorization", fmt.Sprintf("Token %s", apiKey.Key))
res, err := http.DefaultClient.Do(req)
if err != nil {
return err
}
defer res.Body.Close()
if err = json.NewDecoder(res.Body).Decode(o); err != nil {
return err
}
return nil
}
func (c *netboxClient) makeRequest(ctx context.Context, method, path string, q url.Values, ib io.Reader, o interface{}) error {
u, err := url.Parse(c.endpoint)
if err != nil {
return err
}
u.Path = path
u.RawQuery = q.Encode()
return c.makeRequestRaw(ctx, method, u.String(), ib, o)
}
func (c *netboxClient) GetSitePrefixesWithTag(ctx context.Context, site string, tag string) ([]*net.IPNet, error) {
s, err := c.resolveSiteNameToId(ctx, site)
if err != nil {
return nil, err
}
out := []*net.IPNet{}
q := url.Values{}
q.Add("site_id", strconv.Itoa(s))
q.Add("tag", tag)
page := &PrefixList{}
if err := c.makeRequest(ctx, http.MethodGet, "/api/ipam/prefixes/", q, nil, page); err != nil {
return nil, err
}
for _, r := range page.Results {
_, ipnet, err := net.ParseCIDR(r.Prefix)
if err != nil {
return nil, err
}
out = append(out, ipnet)
}
for page.Next != "" {
page = &PrefixList{}
if err := c.makeRequestRaw(ctx, http.MethodGet, page.Next, nil, page); err != nil {
return nil, err
}
for _, r := range page.Results {
_, ipnet, err := net.ParseCIDR(r.Prefix)
if err != nil {
return nil, err
}
out = append(out, ipnet)
}
}
return out, nil
}
func (c *netboxClient) GetPrefixesWithTag(ctx context.Context, tag string) ([]*net.IPNet, error) {
out := []*net.IPNet{}
q := url.Values{}
q.Add("tag", tag)
page := &PrefixList{}
if err := c.makeRequest(ctx, http.MethodGet, "/api/ipam/prefixes/", q, nil, page); err != nil {
return nil, err
}
for _, r := range page.Results {
_, ipnet, err := net.ParseCIDR(r.Prefix)
if err != nil {
return nil, err
}
out = append(out, ipnet)
}
for page.Next != "" {
page = &PrefixList{}
if err := c.makeRequestRaw(ctx, http.MethodGet, page.Next, nil, page); err != nil {
return nil, err
}
for _, r := range page.Results {
_, ipnet, err := net.ParseCIDR(r.Prefix)
if err != nil {
return nil, err
}
out = append(out, ipnet)
}
}
return out, nil
}
func (c *netboxClient) resolveSiteNameToId(ctx context.Context, s string) (int, error) {
q := url.Values{}
q.Add("name", s)
out := &SiteList{}
if err := c.makeRequest(ctx, http.MethodGet, "/api/dcim/sites/", q, nil, out); err != nil {
return 0, err
}
if len(out.Results) == 0 {
return 0, fmt.Errorf("resolveSiteNameToId: no results returned from netbox")
}
return out.Results[0].ID, nil
}
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