initial commit
This commit is contained in:
commit
619bb2e023
|
|
@ -0,0 +1,2 @@
|
|||
config.json
|
||||
main
|
||||
|
|
@ -0,0 +1,13 @@
|
|||
Copyright (c) 2015, Kegan Myers <kegan@keganmyers.com>
|
||||
|
||||
Permission to use, copy, modify, and/or distribute this software for any purpose
|
||||
with or without fee is hereby granted, provided that the above copyright notice
|
||||
and this permission notice appear in all copies.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
|
||||
REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
|
||||
FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
|
||||
INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
|
||||
OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
|
||||
TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
|
||||
THIS SOFTWARE.
|
||||
|
|
@ -0,0 +1,53 @@
|
|||
CFHA
|
||||
====
|
||||
CloudFlare High Availability monitor
|
||||
|
||||
CFHA is a simple daemon that will continually monitor servers you specify and
|
||||
add/remove them from a shared "A" record in cloudflare.
|
||||
|
||||
Configuration
|
||||
=============
|
||||
Configuring CFHA is done through a JSON file, which should be named config.json,
|
||||
and placed in whatever directory you will run CFHA from.
|
||||
|
||||
Example configuration file:
|
||||
|
||||
```js
|
||||
{
|
||||
"hosts": [ //an array of hosts to check
|
||||
{
|
||||
"host": "192.168.1.1", //the IP address of the host
|
||||
"type": "http", //the type of check to run, can be either http or https
|
||||
"options": {} //optional additional parameters to the check module
|
||||
},
|
||||
{
|
||||
"host": "192.168.1.2",
|
||||
"type": "https",
|
||||
"options": {
|
||||
"hostname": "lb-check-hostname" //this is the only currently supported parameter, and will be sent as the "host" header of an http(s) request
|
||||
}
|
||||
}
|
||||
],
|
||||
"cloudflare": { //cloudflare configuration
|
||||
"email": "cfemail@example.com",
|
||||
"apiKey": "CF_API_KEY", //get this from your cloudflare profile
|
||||
"domain": "example.com", //the domain in cloudflare you will be operating on
|
||||
"name": "lb.example.com", //the full dns record you wish to edit
|
||||
"ttl": "1" //1 is automatic, otherwise see the cloudflare documentation on TTL
|
||||
},
|
||||
"interval": 1 //how often (in seconds) to ping the server, note that this is a number, not a string
|
||||
}
|
||||
```
|
||||
|
||||
Limitations
|
||||
===========
|
||||
CFHA is limited in a few ways, due both to the author, and due to limitations in cloudflare's API / how DNS works.
|
||||
|
||||
1. CFHA can only operate on `A` records since it is invalid to have multiple values for CNAME records.
|
||||
2. You must specify each host by IP address because CFHA does not resolve names to IP addresses yet. (And we need to have IP addresses for A records). An interesting feature of implementing this is that you could create a pool A record and CFHA would monitor all of those via a single host entry pointing to that record, but it would require a lot more logic.
|
||||
3. CFHA does not operate on IPv6. This is something that is possible (and maybe even simple) to implement, but has not yet been worked on.
|
||||
4. CFHA is meant to operate on load balancers, and as such only checks for a 200 exit status on a host. You should add a name-based virtual host to nginx that returns 200 on each monitored server, and set the hostname in the check options.
|
||||
|
||||
License
|
||||
=======
|
||||
CFHA is made available under an ISC license. Anyone is welcome to make contributions with the understanding that they will be released under that same license.
|
||||
|
|
@ -0,0 +1,362 @@
|
|||
Mozilla Public License, version 2.0
|
||||
|
||||
1. Definitions
|
||||
|
||||
1.1. "Contributor"
|
||||
|
||||
means each individual or legal entity that creates, contributes to the
|
||||
creation of, or owns Covered Software.
|
||||
|
||||
1.2. "Contributor Version"
|
||||
|
||||
means the combination of the Contributions of others (if any) used by a
|
||||
Contributor and that particular Contributor's Contribution.
|
||||
|
||||
1.3. "Contribution"
|
||||
|
||||
means Covered Software of a particular Contributor.
|
||||
|
||||
1.4. "Covered Software"
|
||||
|
||||
means Source Code Form to which the initial Contributor has attached the
|
||||
notice in Exhibit A, the Executable Form of such Source Code Form, and
|
||||
Modifications of such Source Code Form, in each case including portions
|
||||
thereof.
|
||||
|
||||
1.5. "Incompatible With Secondary Licenses"
|
||||
means
|
||||
|
||||
a. that the initial Contributor has attached the notice described in
|
||||
Exhibit B to the Covered Software; or
|
||||
|
||||
b. that the Covered Software was made available under the terms of
|
||||
version 1.1 or earlier of the License, but not also under the terms of
|
||||
a Secondary License.
|
||||
|
||||
1.6. "Executable Form"
|
||||
|
||||
means any form of the work other than Source Code Form.
|
||||
|
||||
1.7. "Larger Work"
|
||||
|
||||
means a work that combines Covered Software with other material, in a
|
||||
separate file or files, that is not Covered Software.
|
||||
|
||||
1.8. "License"
|
||||
|
||||
means this document.
|
||||
|
||||
1.9. "Licensable"
|
||||
|
||||
means having the right to grant, to the maximum extent possible, whether
|
||||
at the time of the initial grant or subsequently, any and all of the
|
||||
rights conveyed by this License.
|
||||
|
||||
1.10. "Modifications"
|
||||
|
||||
means any of the following:
|
||||
|
||||
a. any file in Source Code Form that results from an addition to,
|
||||
deletion from, or modification of the contents of Covered Software; or
|
||||
|
||||
b. any new file in Source Code Form that contains any Covered Software.
|
||||
|
||||
1.11. "Patent Claims" of a Contributor
|
||||
|
||||
means any patent claim(s), including without limitation, method,
|
||||
process, and apparatus claims, in any patent Licensable by such
|
||||
Contributor that would be infringed, but for the grant of the License,
|
||||
by the making, using, selling, offering for sale, having made, import,
|
||||
or transfer of either its Contributions or its Contributor Version.
|
||||
|
||||
1.12. "Secondary License"
|
||||
|
||||
means either the GNU General Public License, Version 2.0, the GNU Lesser
|
||||
General Public License, Version 2.1, the GNU Affero General Public
|
||||
License, Version 3.0, or any later versions of those licenses.
|
||||
|
||||
1.13. "Source Code Form"
|
||||
|
||||
means the form of the work preferred for making modifications.
|
||||
|
||||
1.14. "You" (or "Your")
|
||||
|
||||
means an individual or a legal entity exercising rights under this
|
||||
License. For legal entities, "You" includes any entity that controls, is
|
||||
controlled by, or is under common control with You. For purposes of this
|
||||
definition, "control" means (a) the power, direct or indirect, to cause
|
||||
the direction or management of such entity, whether by contract or
|
||||
otherwise, or (b) ownership of more than fifty percent (50%) of the
|
||||
outstanding shares or beneficial ownership of such entity.
|
||||
|
||||
|
||||
2. License Grants and Conditions
|
||||
|
||||
2.1. Grants
|
||||
|
||||
Each Contributor hereby grants You a world-wide, royalty-free,
|
||||
non-exclusive license:
|
||||
|
||||
a. under intellectual property rights (other than patent or trademark)
|
||||
Licensable by such Contributor to use, reproduce, make available,
|
||||
modify, display, perform, distribute, and otherwise exploit its
|
||||
Contributions, either on an unmodified basis, with Modifications, or
|
||||
as part of a Larger Work; and
|
||||
|
||||
b. under Patent Claims of such Contributor to make, use, sell, offer for
|
||||
sale, have made, import, and otherwise transfer either its
|
||||
Contributions or its Contributor Version.
|
||||
|
||||
2.2. Effective Date
|
||||
|
||||
The licenses granted in Section 2.1 with respect to any Contribution
|
||||
become effective for each Contribution on the date the Contributor first
|
||||
distributes such Contribution.
|
||||
|
||||
2.3. Limitations on Grant Scope
|
||||
|
||||
The licenses granted in this Section 2 are the only rights granted under
|
||||
this License. No additional rights or licenses will be implied from the
|
||||
distribution or licensing of Covered Software under this License.
|
||||
Notwithstanding Section 2.1(b) above, no patent license is granted by a
|
||||
Contributor:
|
||||
|
||||
a. for any code that a Contributor has removed from Covered Software; or
|
||||
|
||||
b. for infringements caused by: (i) Your and any other third party's
|
||||
modifications of Covered Software, or (ii) the combination of its
|
||||
Contributions with other software (except as part of its Contributor
|
||||
Version); or
|
||||
|
||||
c. under Patent Claims infringed by Covered Software in the absence of
|
||||
its Contributions.
|
||||
|
||||
This License does not grant any rights in the trademarks, service marks,
|
||||
or logos of any Contributor (except as may be necessary to comply with
|
||||
the notice requirements in Section 3.4).
|
||||
|
||||
2.4. Subsequent Licenses
|
||||
|
||||
No Contributor makes additional grants as a result of Your choice to
|
||||
distribute the Covered Software under a subsequent version of this
|
||||
License (see Section 10.2) or under the terms of a Secondary License (if
|
||||
permitted under the terms of Section 3.3).
|
||||
|
||||
2.5. Representation
|
||||
|
||||
Each Contributor represents that the Contributor believes its
|
||||
Contributions are its original creation(s) or it has sufficient rights to
|
||||
grant the rights to its Contributions conveyed by this License.
|
||||
|
||||
2.6. Fair Use
|
||||
|
||||
This License is not intended to limit any rights You have under
|
||||
applicable copyright doctrines of fair use, fair dealing, or other
|
||||
equivalents.
|
||||
|
||||
2.7. Conditions
|
||||
|
||||
Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted in
|
||||
Section 2.1.
|
||||
|
||||
|
||||
3. Responsibilities
|
||||
|
||||
3.1. Distribution of Source Form
|
||||
|
||||
All distribution of Covered Software in Source Code Form, including any
|
||||
Modifications that You create or to which You contribute, must be under
|
||||
the terms of this License. You must inform recipients that the Source
|
||||
Code Form of the Covered Software is governed by the terms of this
|
||||
License, and how they can obtain a copy of this License. You may not
|
||||
attempt to alter or restrict the recipients' rights in the Source Code
|
||||
Form.
|
||||
|
||||
3.2. Distribution of Executable Form
|
||||
|
||||
If You distribute Covered Software in Executable Form then:
|
||||
|
||||
a. such Covered Software must also be made available in Source Code Form,
|
||||
as described in Section 3.1, and You must inform recipients of the
|
||||
Executable Form how they can obtain a copy of such Source Code Form by
|
||||
reasonable means in a timely manner, at a charge no more than the cost
|
||||
of distribution to the recipient; and
|
||||
|
||||
b. You may distribute such Executable Form under the terms of this
|
||||
License, or sublicense it under different terms, provided that the
|
||||
license for the Executable Form does not attempt to limit or alter the
|
||||
recipients' rights in the Source Code Form under this License.
|
||||
|
||||
3.3. Distribution of a Larger Work
|
||||
|
||||
You may create and distribute a Larger Work under terms of Your choice,
|
||||
provided that You also comply with the requirements of this License for
|
||||
the Covered Software. If the Larger Work is a combination of Covered
|
||||
Software with a work governed by one or more Secondary Licenses, and the
|
||||
Covered Software is not Incompatible With Secondary Licenses, this
|
||||
License permits You to additionally distribute such Covered Software
|
||||
under the terms of such Secondary License(s), so that the recipient of
|
||||
the Larger Work may, at their option, further distribute the Covered
|
||||
Software under the terms of either this License or such Secondary
|
||||
License(s).
|
||||
|
||||
3.4. Notices
|
||||
|
||||
You may not remove or alter the substance of any license notices
|
||||
(including copyright notices, patent notices, disclaimers of warranty, or
|
||||
limitations of liability) contained within the Source Code Form of the
|
||||
Covered Software, except that You may alter any license notices to the
|
||||
extent required to remedy known factual inaccuracies.
|
||||
|
||||
3.5. Application of Additional Terms
|
||||
|
||||
You may choose to offer, and to charge a fee for, warranty, support,
|
||||
indemnity or liability obligations to one or more recipients of Covered
|
||||
Software. However, You may do so only on Your own behalf, and not on
|
||||
behalf of any Contributor. You must make it absolutely clear that any
|
||||
such warranty, support, indemnity, or liability obligation is offered by
|
||||
You alone, and You hereby agree to indemnify every Contributor for any
|
||||
liability incurred by such Contributor as a result of warranty, support,
|
||||
indemnity or liability terms You offer. You may include additional
|
||||
disclaimers of warranty and limitations of liability specific to any
|
||||
jurisdiction.
|
||||
|
||||
4. Inability to Comply Due to Statute or Regulation
|
||||
|
||||
If it is impossible for You to comply with any of the terms of this License
|
||||
with respect to some or all of the Covered Software due to statute,
|
||||
judicial order, or regulation then You must: (a) comply with the terms of
|
||||
this License to the maximum extent possible; and (b) describe the
|
||||
limitations and the code they affect. Such description must be placed in a
|
||||
text file included with all distributions of the Covered Software under
|
||||
this License. Except to the extent prohibited by statute or regulation,
|
||||
such description must be sufficiently detailed for a recipient of ordinary
|
||||
skill to be able to understand it.
|
||||
|
||||
5. Termination
|
||||
|
||||
5.1. The rights granted under this License will terminate automatically if You
|
||||
fail to comply with any of its terms. However, if You become compliant,
|
||||
then the rights granted under this License from a particular Contributor
|
||||
are reinstated (a) provisionally, unless and until such Contributor
|
||||
explicitly and finally terminates Your grants, and (b) on an ongoing
|
||||
basis, if such Contributor fails to notify You of the non-compliance by
|
||||
some reasonable means prior to 60 days after You have come back into
|
||||
compliance. Moreover, Your grants from a particular Contributor are
|
||||
reinstated on an ongoing basis if such Contributor notifies You of the
|
||||
non-compliance by some reasonable means, this is the first time You have
|
||||
received notice of non-compliance with this License from such
|
||||
Contributor, and You become compliant prior to 30 days after Your receipt
|
||||
of the notice.
|
||||
|
||||
5.2. If You initiate litigation against any entity by asserting a patent
|
||||
infringement claim (excluding declaratory judgment actions,
|
||||
counter-claims, and cross-claims) alleging that a Contributor Version
|
||||
directly or indirectly infringes any patent, then the rights granted to
|
||||
You by any and all Contributors for the Covered Software under Section
|
||||
2.1 of this License shall terminate.
|
||||
|
||||
5.3. In the event of termination under Sections 5.1 or 5.2 above, all end user
|
||||
license agreements (excluding distributors and resellers) which have been
|
||||
validly granted by You or Your distributors under this License prior to
|
||||
termination shall survive termination.
|
||||
|
||||
6. Disclaimer of Warranty
|
||||
|
||||
Covered Software is provided under this License on an "as is" basis,
|
||||
without warranty of any kind, either expressed, implied, or statutory,
|
||||
including, without limitation, warranties that the Covered Software is free
|
||||
of defects, merchantable, fit for a particular purpose or non-infringing.
|
||||
The entire risk as to the quality and performance of the Covered Software
|
||||
is with You. Should any Covered Software prove defective in any respect,
|
||||
You (not any Contributor) assume the cost of any necessary servicing,
|
||||
repair, or correction. This disclaimer of warranty constitutes an essential
|
||||
part of this License. No use of any Covered Software is authorized under
|
||||
this License except under this disclaimer.
|
||||
|
||||
7. Limitation of Liability
|
||||
|
||||
Under no circumstances and under no legal theory, whether tort (including
|
||||
negligence), contract, or otherwise, shall any Contributor, or anyone who
|
||||
distributes Covered Software as permitted above, be liable to You for any
|
||||
direct, indirect, special, incidental, or consequential damages of any
|
||||
character including, without limitation, damages for lost profits, loss of
|
||||
goodwill, work stoppage, computer failure or malfunction, or any and all
|
||||
other commercial damages or losses, even if such party shall have been
|
||||
informed of the possibility of such damages. This limitation of liability
|
||||
shall not apply to liability for death or personal injury resulting from
|
||||
such party's negligence to the extent applicable law prohibits such
|
||||
limitation. Some jurisdictions do not allow the exclusion or limitation of
|
||||
incidental or consequential damages, so this exclusion and limitation may
|
||||
not apply to You.
|
||||
|
||||
8. Litigation
|
||||
|
||||
Any litigation relating to this License may be brought only in the courts
|
||||
of a jurisdiction where the defendant maintains its principal place of
|
||||
business and such litigation shall be governed by laws of that
|
||||
jurisdiction, without reference to its conflict-of-law provisions. Nothing
|
||||
in this Section shall prevent a party's ability to bring cross-claims or
|
||||
counter-claims.
|
||||
|
||||
9. Miscellaneous
|
||||
|
||||
This License represents the complete agreement concerning the subject
|
||||
matter hereof. If any provision of this License is held to be
|
||||
unenforceable, such provision shall be reformed only to the extent
|
||||
necessary to make it enforceable. Any law or regulation which provides that
|
||||
the language of a contract shall be construed against the drafter shall not
|
||||
be used to construe this License against a Contributor.
|
||||
|
||||
|
||||
10. Versions of the License
|
||||
|
||||
10.1. New Versions
|
||||
|
||||
Mozilla Foundation is the license steward. Except as provided in Section
|
||||
10.3, no one other than the license steward has the right to modify or
|
||||
publish new versions of this License. Each version will be given a
|
||||
distinguishing version number.
|
||||
|
||||
10.2. Effect of New Versions
|
||||
|
||||
You may distribute the Covered Software under the terms of the version
|
||||
of the License under which You originally received the Covered Software,
|
||||
or under the terms of any subsequent version published by the license
|
||||
steward.
|
||||
|
||||
10.3. Modified Versions
|
||||
|
||||
If you create software not governed by this License, and you want to
|
||||
create a new license for such software, you may create and use a
|
||||
modified version of this License if you rename the license and remove
|
||||
any references to the name of the license steward (except to note that
|
||||
such modified license differs from this License).
|
||||
|
||||
10.4. Distributing Source Code Form that is Incompatible With Secondary
|
||||
Licenses If You choose to distribute Source Code Form that is
|
||||
Incompatible With Secondary Licenses under the terms of this version of
|
||||
the License, the notice described in Exhibit B of this License must be
|
||||
attached.
|
||||
|
||||
Exhibit A - Source Code Form License Notice
|
||||
|
||||
This Source Code Form is subject to the
|
||||
terms of the Mozilla Public License, v.
|
||||
2.0. If a copy of the MPL was not
|
||||
distributed with this file, You can
|
||||
obtain one at
|
||||
http://mozilla.org/MPL/2.0/.
|
||||
|
||||
If it is not possible or desirable to put the notice in a particular file,
|
||||
then You may include the notice in a location (such as a LICENSE file in a
|
||||
relevant directory) where a recipient would be likely to look for such a
|
||||
notice.
|
||||
|
||||
You may add additional accurate notices of copyright ownership.
|
||||
|
||||
Exhibit B - "Incompatible With Secondary Licenses" Notice
|
||||
|
||||
This Source Code Form is "Incompatible
|
||||
With Secondary Licenses", as defined by
|
||||
the Mozilla Public License, v. 2.0.
|
||||
|
|
@ -0,0 +1,19 @@
|
|||
# Note
|
||||
This is a modification of the original `github.com/pearkes/cloudflare` package, and has changes
|
||||
that align with the goals of the `cfha` project. Don't
|
||||
|
||||
## cloudflare
|
||||
|
||||
This package provides the `cloudflare` package which offers
|
||||
an interface to the CloudFlare gAPI.
|
||||
|
||||
It's intentionally designed to make heavy use of built-ins and strings
|
||||
in place of custom data structures and proper types. It also only implements
|
||||
specific endpoints, and doesn't have full API coverage.
|
||||
|
||||
**For those reasons, I recommend looking elsewhere if you just need
|
||||
a standard CloudFlare API client.**
|
||||
|
||||
### Documentation
|
||||
|
||||
The full documentation is available on [Godoc](http://godoc.org/github.com/pearkes/cloudflare)
|
||||
|
|
@ -0,0 +1,109 @@
|
|||
package cloudflare
|
||||
|
||||
import (
|
||||
"encoding/json"
|
||||
"fmt"
|
||||
"io/ioutil"
|
||||
"net/http"
|
||||
"net/url"
|
||||
)
|
||||
|
||||
// Client provides a client to the CloudflAre API
|
||||
type Client struct {
|
||||
// Access Token
|
||||
Token string
|
||||
|
||||
// User Email
|
||||
Email string
|
||||
|
||||
// URL to the DO API to use
|
||||
URL string
|
||||
|
||||
// HttpClient is the client to use. Default will be
|
||||
// used if not provided.
|
||||
Http *http.Client
|
||||
}
|
||||
|
||||
// NewClient returns a new cloudflare client,
|
||||
// requires an authorization token. You can generate
|
||||
// an OAuth token by visiting the Apps & API section
|
||||
// of the CloudflAre control panel for your account.
|
||||
//-Can't return an error
|
||||
func NewClient(email string, token string) (*Client) {
|
||||
//-Removed environment grabbing
|
||||
client := Client{
|
||||
Token: token,
|
||||
Email: email,
|
||||
URL: "https://www.cloudflare.com/api_json.html",
|
||||
Http: http.DefaultClient,
|
||||
}
|
||||
return &client
|
||||
}
|
||||
|
||||
// Creates a new request with the params
|
||||
func (c *Client) NewRequest(params map[string]string, method string, action string) (*http.Request, error) {
|
||||
p := url.Values{}
|
||||
u, err := url.Parse(c.URL)
|
||||
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// Build up our request parameters
|
||||
for k, v := range params {
|
||||
p.Add(k, v)
|
||||
}
|
||||
|
||||
// Add authentication details
|
||||
p.Add("tkn", c.Token)
|
||||
p.Add("email", c.Email)
|
||||
|
||||
// The "action" to take against the API
|
||||
p.Add("a", action)
|
||||
|
||||
// Add the params to our URL
|
||||
u.RawQuery = p.Encode()
|
||||
|
||||
// Build the request
|
||||
req, err := http.NewRequest(method, u.String(), nil)
|
||||
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return req, nil
|
||||
|
||||
}
|
||||
|
||||
// decodeBody is used to JSON decode a body
|
||||
func decodeBody(resp *http.Response, out interface{}) error {
|
||||
body, err := ioutil.ReadAll(resp.Body)
|
||||
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if err = json.Unmarshal(body, &out); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// checkResp wraps http.Client.Do() and verifies that the
|
||||
// request was successful. A non-200 request returns an error
|
||||
// formatted to included any validation problems or otherwise
|
||||
func checkResp(resp *http.Response, err error) (*http.Response, error) {
|
||||
// If the err is already there, there was an error higher
|
||||
// up the chain, so just return that
|
||||
if err != nil {
|
||||
return resp, err
|
||||
}
|
||||
|
||||
switch i := resp.StatusCode; {
|
||||
case i == 200:
|
||||
return resp, nil
|
||||
default:
|
||||
return nil, fmt.Errorf("API Error: %s", resp.Status)
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,189 @@
|
|||
package cloudflare
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
)
|
||||
|
||||
//~Return the actual error when possible
|
||||
|
||||
type RecordsResponse struct {
|
||||
Response struct {
|
||||
Recs struct {
|
||||
Records []Record `json:"objs"`
|
||||
} `json:"recs"`
|
||||
} `json:"response"`
|
||||
Result string `json:"result"`
|
||||
Message string `json:"msg"`
|
||||
}
|
||||
|
||||
//-Removed wildcard option
|
||||
func (r *RecordsResponse) FindRecordByName(name string) ([]Record, error) {
|
||||
if r.Result == "error" {
|
||||
return nil, fmt.Errorf("API Error: %s", r.Message)
|
||||
}
|
||||
|
||||
objs := r.Response.Recs.Records
|
||||
|
||||
var recs []Record
|
||||
|
||||
//-Removed errror on no results
|
||||
//-Removed wildcard checking
|
||||
//~Checking against FullName, not just name
|
||||
|
||||
for _, v := range objs {
|
||||
if v.FullName == name {
|
||||
recs = append(recs, v)
|
||||
}
|
||||
}
|
||||
|
||||
return recs, nil
|
||||
}
|
||||
|
||||
type RecordResponse struct {
|
||||
Response struct {
|
||||
Rec struct {
|
||||
Record Record `json:"obj"`
|
||||
} `json:"rec"`
|
||||
} `json:"response"`
|
||||
Result string `json:"result"`
|
||||
Message string `json:"msg"`
|
||||
}
|
||||
|
||||
func (r *RecordResponse) GetRecord() (*Record, error) {
|
||||
if r.Result == "error" {
|
||||
return nil, fmt.Errorf("API Error: %s", r.Message)
|
||||
}
|
||||
|
||||
return &r.Response.Rec.Record, nil
|
||||
}
|
||||
|
||||
// Record is used to represent a retrieved Record. All properties
|
||||
// are set as strings.
|
||||
type Record struct {
|
||||
Id string `json:"rec_id"`
|
||||
Domain string `json:"zone_name"`
|
||||
Name string `json:"display_name"`
|
||||
FullName string `json:"name"`
|
||||
Value string `json:"content"`
|
||||
Type string `json:"type"`
|
||||
Priority string `json:"prio"`
|
||||
Ttl string `json:"ttl"`
|
||||
}
|
||||
|
||||
// CreateRecord contains the request parameters to create a new
|
||||
// record.
|
||||
type CreateRecord struct {
|
||||
Type string
|
||||
Name string
|
||||
Content string
|
||||
Ttl string
|
||||
Priority string
|
||||
}
|
||||
|
||||
// CreateRecord creates a record from the parameters specified and
|
||||
// returns an error if it fails. If no error and the name is returned,
|
||||
// the Record was succesfully created.
|
||||
func (c *Client) CreateRecord(domain string, opts *CreateRecord) (*Record, error) {
|
||||
// Make the request parameters
|
||||
params := make(map[string]string)
|
||||
//-No option checking, we set them all ourselves
|
||||
params["z"] = domain
|
||||
params["type"] = opts.Type
|
||||
params["name"] = opts.Name
|
||||
params["content"] = opts.Content
|
||||
params["prio"] = opts.Priority
|
||||
params["ttl"] = "1"
|
||||
|
||||
req, err := c.NewRequest(params, "POST", "rec_new")
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
resp, err := checkResp(c.Http.Do(req))
|
||||
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
recordResp := new(RecordResponse)
|
||||
|
||||
err = decodeBody(resp, &recordResp)
|
||||
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
record, err := recordResp.GetRecord()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// The request was successful
|
||||
return record, nil
|
||||
}
|
||||
|
||||
// DestroyRecord destroys a record by the ID specified and
|
||||
// returns an error if it fails. If no error is returned,
|
||||
// the Record was succesfully destroyed.
|
||||
func (c *Client) DestroyRecord(domain string, id string) error {
|
||||
params := make(map[string]string)
|
||||
params["z"] = domain
|
||||
params["id"] = id
|
||||
|
||||
req, err := c.NewRequest(params, "POST", "rec_delete")
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
resp, err := checkResp(c.Http.Do(req))
|
||||
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
recordResp := new(RecordResponse)
|
||||
|
||||
err = decodeBody(resp, &recordResp)
|
||||
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
_, err = recordResp.GetRecord()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// The request was successful
|
||||
return nil
|
||||
}
|
||||
|
||||
func (c *Client) RetrieveRecordsByName(domain string, name string) ([]Record, error) {
|
||||
params := make(map[string]string)
|
||||
params["z"] = domain
|
||||
|
||||
req, err := c.NewRequest(params, "GET", "rec_load_all")
|
||||
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
resp, err := checkResp(c.Http.Do(req))
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
records := new(RecordsResponse)
|
||||
|
||||
err = decodeBody(resp, records)
|
||||
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
record, err := records.FindRecordByName(name)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// The request was successful
|
||||
return record, nil
|
||||
}
|
||||
|
|
@ -0,0 +1,31 @@
|
|||
package main
|
||||
|
||||
import (
|
||||
"log"
|
||||
"fmt"
|
||||
"io/ioutil"
|
||||
"encoding/json"
|
||||
"./monitor"
|
||||
)
|
||||
|
||||
func main() {
|
||||
file, err := ioutil.ReadFile("./config.json")
|
||||
if err != nil {
|
||||
log.Fatal(fmt.Sprintf("%v\n", err))
|
||||
}
|
||||
|
||||
c := monitor.Config{}
|
||||
json.Unmarshal(file, &c)
|
||||
|
||||
handlers := make([]monitor.GenericHandler, 2)
|
||||
handlers[0] = monitor.NewLogHandler()
|
||||
handlers[1] = monitor.NewCloudflareHandler(c.Cloudflare)
|
||||
|
||||
engine := monitor.CreateEngine(handlers)
|
||||
|
||||
for _, endpoint := range c.Hosts {
|
||||
monitor.CreateCheck(c.Interval, engine, endpoint)
|
||||
}
|
||||
|
||||
select{}
|
||||
}
|
||||
|
|
@ -0,0 +1,75 @@
|
|||
package monitor
|
||||
|
||||
import (
|
||||
"../cloudflare"
|
||||
"log"
|
||||
"fmt"
|
||||
)
|
||||
|
||||
func NewCloudflareHandler(config CloudflareConfig) GenericHandler {
|
||||
return runHandler(make(chan Transition, 5), &cloudflareHandler{
|
||||
config,
|
||||
cloudflare.NewClient(config.Email, config.ApiKey),
|
||||
make(map[string]bool),
|
||||
})
|
||||
}
|
||||
|
||||
type cloudflareHandler struct{
|
||||
config CloudflareConfig
|
||||
client *cloudflare.Client
|
||||
actuallyDownHosts map[string]bool
|
||||
}
|
||||
|
||||
func (this *cloudflareHandler) handle(transition Transition) {
|
||||
switch transition.To {
|
||||
case Down:
|
||||
log.Print(fmt.Sprintf(
|
||||
"Removed cloudflare record for `%s`: `%v`\n",
|
||||
transition.RecordValue,
|
||||
removeCloudflareRecord(this.client, this.config, transition.RecordValue)))
|
||||
|
||||
case Up:
|
||||
log.Print(fmt.Sprintf(
|
||||
"Added cloudflare record for `%s`: `%v`\n",
|
||||
transition.RecordValue,
|
||||
addCloudflareRecord(this.client, this.config, transition.RecordValue)))
|
||||
|
||||
case Unknown: //just leave it how it was, going up/down is idempotent anyways
|
||||
}
|
||||
}
|
||||
|
||||
func removeCloudflareRecord(client *cloudflare.Client, config CloudflareConfig, recordValue string) bool {
|
||||
records, err := client.RetrieveRecordsByName(config.Domain, config.Name)
|
||||
|
||||
if err != nil {
|
||||
return false
|
||||
}
|
||||
|
||||
exitStatus := true
|
||||
for _, record := range records {
|
||||
if record.Value != recordValue {
|
||||
continue
|
||||
}
|
||||
|
||||
exitStatus = exitStatus && client.DestroyRecord(config.Domain, record.Id) == nil
|
||||
}
|
||||
|
||||
return exitStatus
|
||||
}
|
||||
|
||||
func addCloudflareRecord(client *cloudflare.Client, config CloudflareConfig, recordValue string) bool {
|
||||
opts := cloudflare.CreateRecord{
|
||||
"A",
|
||||
config.Name,
|
||||
recordValue,
|
||||
"1",
|
||||
"0",
|
||||
}
|
||||
|
||||
_, err := client.CreateRecord(config.Domain, &opts)
|
||||
|
||||
if err != nil {
|
||||
return fmt.Sprintf("%s", err) == "API Error: The record already exists."
|
||||
}
|
||||
return true
|
||||
}
|
||||
|
|
@ -0,0 +1,21 @@
|
|||
package monitor
|
||||
|
||||
type HostConfig struct {
|
||||
Host string
|
||||
Type string
|
||||
Options map[string]string
|
||||
}
|
||||
|
||||
type CloudflareConfig struct {
|
||||
Email string
|
||||
ApiKey string
|
||||
Domain string
|
||||
Name string
|
||||
Ttl string
|
||||
}
|
||||
|
||||
type Config struct {
|
||||
Cloudflare CloudflareConfig
|
||||
Hosts []HostConfig
|
||||
Interval uint16
|
||||
}
|
||||
|
|
@ -0,0 +1,70 @@
|
|||
package monitor
|
||||
|
||||
import (
|
||||
"net/http"
|
||||
"time"
|
||||
"log"
|
||||
"fmt"
|
||||
)
|
||||
|
||||
type checkConfig struct {
|
||||
engine *Engine
|
||||
interval time.Duration
|
||||
host HostConfig
|
||||
}
|
||||
|
||||
type httpChecker struct {
|
||||
client *http.Client
|
||||
config checkConfig
|
||||
endpoint string
|
||||
}
|
||||
|
||||
func (this *httpChecker) run() {
|
||||
log.Print(fmt.Sprintf("Starting: %v\n", this.config.host))
|
||||
for true {
|
||||
this.config.engine.Input<- Result{
|
||||
this.config.host.Host,
|
||||
this.check(),
|
||||
}
|
||||
time.Sleep(this.config.interval)
|
||||
}
|
||||
}
|
||||
|
||||
func (this *httpChecker) check() Status {
|
||||
req, err := http.NewRequest("GET", this.endpoint, nil)
|
||||
if err != nil {
|
||||
log.Print(fmt.Sprintf("Stopping: %v due to http NewRequest error\n", this.config.host))
|
||||
return Unknown
|
||||
}
|
||||
req.Header.Set("Host", this.config.host.Options["hostname"])
|
||||
return this.determineHttpCheckStatus(this.client.Do(req))
|
||||
}
|
||||
|
||||
func (this *httpChecker) determineHttpCheckStatus(res *http.Response, err error) Status {
|
||||
if err != nil || res.StatusCode != 200 {
|
||||
return Down
|
||||
}
|
||||
return Up
|
||||
}
|
||||
|
||||
func newHttpChecker(config checkConfig) *httpChecker {
|
||||
checker := httpChecker{
|
||||
&http.Client{},
|
||||
config,
|
||||
config.host.Type + "://" + config.host.Host + "/",
|
||||
}
|
||||
go checker.run()
|
||||
return &checker
|
||||
}
|
||||
|
||||
func CreateCheck(interval uint16, engine *Engine, host HostConfig) {
|
||||
config := checkConfig{
|
||||
engine,
|
||||
time.Duration(int64(interval)) * time.Second,
|
||||
host,
|
||||
}
|
||||
switch host.Type {
|
||||
case "http", "https":
|
||||
newHttpChecker(config)
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,51 @@
|
|||
package monitor
|
||||
|
||||
import (
|
||||
)
|
||||
|
||||
type Engine struct {
|
||||
Input chan Result
|
||||
output []GenericHandler
|
||||
}
|
||||
|
||||
func CreateEngine(handlers []GenericHandler) *Engine {
|
||||
input := make(chan Result)
|
||||
|
||||
engine := Engine{
|
||||
input,
|
||||
handlers,
|
||||
}
|
||||
|
||||
e := &engine
|
||||
|
||||
go e.startProcessor()
|
||||
|
||||
return e
|
||||
}
|
||||
|
||||
func (this *Engine) startProcessor() {
|
||||
statuses := make(map[string]Status)
|
||||
for true {
|
||||
result := <-this.Input
|
||||
|
||||
//No transition if we don't exist
|
||||
if result.Status == statuses[result.RecordValue] {
|
||||
continue
|
||||
}
|
||||
|
||||
//Create a record with to, from
|
||||
change := Transition{
|
||||
result.Status,
|
||||
statuses[result.RecordValue],
|
||||
result.RecordValue,
|
||||
}
|
||||
|
||||
//Send the record to everyone who cares
|
||||
for _, relay := range this.output {
|
||||
relay.channel<- change
|
||||
}
|
||||
|
||||
//And set our new status
|
||||
statuses[result.RecordValue] = result.Status
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,20 @@
|
|||
package monitor
|
||||
|
||||
type handler interface{
|
||||
handle(transition Transition)
|
||||
}
|
||||
|
||||
type GenericHandler struct {
|
||||
channel chan Transition
|
||||
}
|
||||
|
||||
func runHandler(input chan Transition, handler handler) GenericHandler {
|
||||
go func() {
|
||||
for true {
|
||||
handler.handle(<-input)
|
||||
}
|
||||
}()
|
||||
return GenericHandler{
|
||||
input,
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,19 @@
|
|||
package monitor
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"log"
|
||||
)
|
||||
|
||||
func NewLogHandler() GenericHandler {
|
||||
return runHandler(make(chan Transition), &logHandler{})
|
||||
}
|
||||
|
||||
type logHandler struct{}
|
||||
|
||||
func (this *logHandler) handle(transition Transition) {
|
||||
log.Print(fmt.Sprintf(
|
||||
"`%s` has become `%d` - `%s`",
|
||||
transition.RecordValue, transition.To,
|
||||
transition.To.String()))
|
||||
}
|
||||
|
|
@ -0,0 +1,6 @@
|
|||
package monitor
|
||||
|
||||
type Result struct {
|
||||
RecordValue string
|
||||
Status Status
|
||||
}
|
||||
|
|
@ -0,0 +1,27 @@
|
|||
package monitor
|
||||
|
||||
type Status int
|
||||
|
||||
const (
|
||||
Unknown Status = iota
|
||||
Up Status = iota
|
||||
Down Status = iota
|
||||
)
|
||||
|
||||
func (t Status) String() string {
|
||||
if t == Unknown {
|
||||
return "Unknown"
|
||||
} else if t == Up {
|
||||
return "Up"
|
||||
} else if t == Down {
|
||||
return "Down"
|
||||
}
|
||||
return ""
|
||||
}
|
||||
|
||||
type Transition struct {
|
||||
To Status
|
||||
From Status
|
||||
RecordValue string
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue