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Malar Invention
2022-04-03 09:37:16 +05:30
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vendor/github.com/hashicorp/go-checkpoint/LICENSE generated vendored Normal file
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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.

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# Go Checkpoint Client
[Checkpoint](http://checkpoint.hashicorp.com) is an internal service at
Hashicorp that we use to check version information, broadcast security
bulletins, etc.
We understand that software making remote calls over the internet
for any reason can be undesirable. Because of this, Checkpoint can be
disabled in all of our software that includes it. You can view the source
of this client to see that we're not sending any private information.
Each Hashicorp application has it's specific configuration option
to disable checkpoint calls, but the `CHECKPOINT_DISABLE` makes
the underlying checkpoint component itself disabled. For example
in the case of packer:
```
CHECKPOINT_DISABLE=1 packer build
```
**Note:** This repository is probably useless outside of internal HashiCorp
use. It is open source for disclosure and because our open source projects
must be able to link to it.

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package checkpoint
import (
crand "crypto/rand"
"encoding/binary"
"encoding/json"
"fmt"
"io"
"io/ioutil"
mrand "math/rand"
"net/http"
"net/url"
"os"
"path/filepath"
"reflect"
"runtime"
"strconv"
"strings"
"time"
"github.com/hashicorp/go-cleanhttp"
)
var magicBytes = [4]byte{0x35, 0x77, 0x69, 0xFB}
// CheckParams are the parameters for configuring a check request.
type CheckParams struct {
// Product and version are used to lookup the correct product and
// alerts for the proper version. The version is also used to perform
// a version check.
Product string
Version string
// Arch and OS are used to filter alerts potentially only to things
// affecting a specific os/arch combination. If these aren't specified,
// they'll be automatically filled in.
Arch string
OS string
// Signature is some random signature that should be stored and used
// as a cookie-like value. This ensures that alerts aren't repeated.
// If the signature is changed, repeat alerts may be sent down. The
// signature should NOT be anything identifiable to a user (such as
// a MAC address). It should be random.
//
// If SignatureFile is given, then the signature will be read from this
// file. If the file doesn't exist, then a random signature will
// automatically be generated and stored here. SignatureFile will be
// ignored if Signature is given.
Signature string
SignatureFile string
// CacheFile, if specified, will cache the result of a check. The
// duration of the cache is specified by CacheDuration, and defaults
// to 48 hours if not specified. If the CacheFile is newer than the
// CacheDuration, than the Check will short-circuit and use those
// results.
//
// If the CacheFile directory doesn't exist, it will be created with
// permissions 0755.
CacheFile string
CacheDuration time.Duration
// Force, if true, will force the check even if CHECKPOINT_DISABLE
// is set. Within HashiCorp products, this is ONLY USED when the user
// specifically requests it. This is never automatically done without
// the user's consent.
Force bool
}
// CheckResponse is the response for a check request.
type CheckResponse struct {
Product string `json:"product"`
CurrentVersion string `json:"current_version"`
CurrentReleaseDate int `json:"current_release_date"`
CurrentDownloadURL string `json:"current_download_url"`
CurrentChangelogURL string `json:"current_changelog_url"`
ProjectWebsite string `json:"project_website"`
Outdated bool `json:"outdated"`
Alerts []*CheckAlert `json:"alerts"`
}
// CheckAlert is a single alert message from a check request.
//
// These never have to be manually constructed, and are typically populated
// into a CheckResponse as a result of the Check request.
type CheckAlert struct {
ID int `json:"id"`
Date int `json:"date"`
Message string `json:"message"`
URL string `json:"url"`
Level string `json:"level"`
}
// Check checks for alerts and new version information.
func Check(p *CheckParams) (*CheckResponse, error) {
if disabled := os.Getenv("CHECKPOINT_DISABLE"); disabled != "" && !p.Force {
return &CheckResponse{}, nil
}
// Set a default timeout of 3 sec for the check request (in milliseconds)
timeout := 3000
if _, err := strconv.Atoi(os.Getenv("CHECKPOINT_TIMEOUT")); err == nil {
timeout, _ = strconv.Atoi(os.Getenv("CHECKPOINT_TIMEOUT"))
}
// If we have a cached result, then use that
if r, err := checkCache(p.Version, p.CacheFile, p.CacheDuration); err != nil {
return nil, err
} else if r != nil {
defer r.Close()
return checkResult(r)
}
var u url.URL
if p.Arch == "" {
p.Arch = runtime.GOARCH
}
if p.OS == "" {
p.OS = runtime.GOOS
}
// If we're given a SignatureFile, then attempt to read that.
signature := p.Signature
if p.Signature == "" && p.SignatureFile != "" {
var err error
signature, err = checkSignature(p.SignatureFile)
if err != nil {
return nil, err
}
}
v := u.Query()
v.Set("version", p.Version)
v.Set("arch", p.Arch)
v.Set("os", p.OS)
v.Set("signature", signature)
u.Scheme = "https"
u.Host = "checkpoint-api.hashicorp.com"
u.Path = fmt.Sprintf("/v1/check/%s", p.Product)
u.RawQuery = v.Encode()
req, err := http.NewRequest("GET", u.String(), nil)
if err != nil {
return nil, err
}
req.Header.Set("Accept", "application/json")
req.Header.Set("User-Agent", "HashiCorp/go-checkpoint")
client := cleanhttp.DefaultClient()
// We use a short timeout since checking for new versions is not critical
// enough to block on if checkpoint is broken/slow.
client.Timeout = time.Duration(timeout) * time.Millisecond
resp, err := client.Do(req)
if err != nil {
return nil, err
}
defer resp.Body.Close()
if resp.StatusCode != 200 {
return nil, fmt.Errorf("Unknown status: %d", resp.StatusCode)
}
var r io.Reader = resp.Body
if p.CacheFile != "" {
// Make sure the directory holding our cache exists.
if err := os.MkdirAll(filepath.Dir(p.CacheFile), 0755); err != nil {
return nil, err
}
// We have to cache the result, so write the response to the
// file as we read it.
f, err := os.Create(p.CacheFile)
if err != nil {
return nil, err
}
// Write the cache header
if err := writeCacheHeader(f, p.Version); err != nil {
f.Close()
os.Remove(p.CacheFile)
return nil, err
}
defer f.Close()
r = io.TeeReader(r, f)
}
return checkResult(r)
}
// CheckInterval is used to check for a response on a given interval duration.
// The interval is not exact, and checks are randomized to prevent a thundering
// herd. However, it is expected that on average one check is performed per
// interval. The returned channel may be closed to stop background checks.
func CheckInterval(p *CheckParams, interval time.Duration, cb func(*CheckResponse, error)) chan struct{} {
doneCh := make(chan struct{})
if disabled := os.Getenv("CHECKPOINT_DISABLE"); disabled != "" {
return doneCh
}
go func() {
for {
select {
case <-time.After(randomStagger(interval)):
resp, err := Check(p)
cb(resp, err)
case <-doneCh:
return
}
}
}()
return doneCh
}
// randomStagger returns an interval that is between 3/4 and 5/4 of
// the given interval. The expected value is the interval.
func randomStagger(interval time.Duration) time.Duration {
stagger := time.Duration(mrand.Int63()) % (interval / 2)
return 3*(interval/4) + stagger
}
func checkCache(current string, path string, d time.Duration) (io.ReadCloser, error) {
fi, err := os.Stat(path)
if err != nil {
if os.IsNotExist(err) {
// File doesn't exist, not a problem
return nil, nil
}
return nil, err
}
if d == 0 {
d = 48 * time.Hour
}
if fi.ModTime().Add(d).Before(time.Now()) {
// Cache is busted, delete the old file and re-request. We ignore
// errors here because re-creating the file is fine too.
os.Remove(path)
return nil, nil
}
// File looks good so far, open it up so we can inspect the contents.
f, err := os.Open(path)
if err != nil {
return nil, err
}
// Check the signature of the file
var sig [4]byte
if err := binary.Read(f, binary.LittleEndian, sig[:]); err != nil {
f.Close()
return nil, err
}
if !reflect.DeepEqual(sig, magicBytes) {
// Signatures don't match. Reset.
f.Close()
return nil, nil
}
// Check the version. If it changed, then rewrite
var length uint32
if err := binary.Read(f, binary.LittleEndian, &length); err != nil {
f.Close()
return nil, err
}
data := make([]byte, length)
if _, err := io.ReadFull(f, data); err != nil {
f.Close()
return nil, err
}
if string(data) != current {
// Version changed, reset
f.Close()
return nil, nil
}
return f, nil
}
func checkResult(r io.Reader) (*CheckResponse, error) {
var result CheckResponse
if err := json.NewDecoder(r).Decode(&result); err != nil {
return nil, err
}
return &result, nil
}
func checkSignature(path string) (string, error) {
_, err := os.Stat(path)
if err == nil {
// The file exists, read it out
sigBytes, err := ioutil.ReadFile(path)
if err != nil {
return "", err
}
// Split the file into lines
lines := strings.SplitN(string(sigBytes), "\n", 2)
if len(lines) > 0 {
return strings.TrimSpace(lines[0]), nil
}
}
// If this isn't a non-exist error, then return that.
if !os.IsNotExist(err) {
return "", err
}
// The file doesn't exist, so create a signature.
var b [16]byte
n := 0
for n < 16 {
n2, err := crand.Read(b[n:])
if err != nil {
return "", err
}
n += n2
}
signature := fmt.Sprintf(
"%x-%x-%x-%x-%x", b[0:4], b[4:6], b[6:8], b[8:10], b[10:])
// Make sure the directory holding our signature exists.
if err := os.MkdirAll(filepath.Dir(path), 0755); err != nil {
return "", err
}
// Write the signature
if err := ioutil.WriteFile(path, []byte(signature+"\n\n"+userMessage+"\n"), 0644); err != nil {
return "", err
}
return signature, nil
}
func writeCacheHeader(f io.Writer, v string) error {
// Write our signature first
if err := binary.Write(f, binary.LittleEndian, magicBytes); err != nil {
return err
}
// Write out our current version length
length := uint32(len(v))
if err := binary.Write(f, binary.LittleEndian, length); err != nil {
return err
}
_, err := f.Write([]byte(v))
return err
}
// userMessage is suffixed to the signature file to provide feedback.
var userMessage = `
This signature is a randomly generated UUID used to de-duplicate
alerts and version information. This signature is random, it is
not based on any personally identifiable information. To create
a new signature, you can simply delete this file at any time.
See the documentation for the software using Checkpoint for more
information on how to disable it.
`

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package checkpoint
import (
"bytes"
"context"
"encoding/json"
"fmt"
"net/http"
"net/url"
"os"
"runtime"
"time"
"github.com/hashicorp/go-cleanhttp"
uuid "github.com/hashicorp/go-uuid"
)
// ReportParams are the parameters for configuring a telemetry report.
type ReportParams struct {
// Signature is some random signature that should be stored and used
// as a cookie-like value. This ensures that alerts aren't repeated.
// If the signature is changed, repeat alerts may be sent down. The
// signature should NOT be anything identifiable to a user (such as
// a MAC address). It should be random.
//
// If SignatureFile is given, then the signature will be read from this
// file. If the file doesn't exist, then a random signature will
// automatically be generated and stored here. SignatureFile will be
// ignored if Signature is given.
Signature string `json:"signature"`
SignatureFile string `json:"-"`
StartTime time.Time `json:"start_time"`
EndTime time.Time `json:"end_time"`
Arch string `json:"arch"`
OS string `json:"os"`
Payload interface{} `json:"payload,omitempty"`
Product string `json:"product"`
RunID string `json:"run_id"`
SchemaVersion string `json:"schema_version"`
Version string `json:"version"`
}
func (i *ReportParams) signature() string {
signature := i.Signature
if i.Signature == "" && i.SignatureFile != "" {
var err error
signature, err = checkSignature(i.SignatureFile)
if err != nil {
return ""
}
}
return signature
}
// Report sends telemetry information to checkpoint
func Report(ctx context.Context, r *ReportParams) error {
if disabled := os.Getenv("CHECKPOINT_DISABLE"); disabled != "" {
return nil
}
req, err := ReportRequest(r)
if err != nil {
return err
}
client := cleanhttp.DefaultClient()
resp, err := client.Do(req.WithContext(ctx))
if err != nil {
return err
}
if resp.StatusCode != 201 {
return fmt.Errorf("Unknown status: %d", resp.StatusCode)
}
return nil
}
// ReportRequest creates a request object for making a report
func ReportRequest(r *ReportParams) (*http.Request, error) {
// Populate some fields automatically if we can
if r.RunID == "" {
uuid, err := uuid.GenerateUUID()
if err != nil {
return nil, err
}
r.RunID = uuid
}
if r.Arch == "" {
r.Arch = runtime.GOARCH
}
if r.OS == "" {
r.OS = runtime.GOOS
}
if r.Signature == "" {
r.Signature = r.signature()
}
b, err := json.Marshal(r)
if err != nil {
return nil, err
}
u := &url.URL{
Scheme: "https",
Host: "checkpoint-api.hashicorp.com",
Path: fmt.Sprintf("/v1/telemetry/%s", r.Product),
}
req, err := http.NewRequest("POST", u.String(), bytes.NewReader(b))
if err != nil {
return nil, err
}
req.Header.Set("Accept", "application/json")
req.Header.Set("User-Agent", "HashiCorp/go-checkpoint")
return req, nil
}

90
vendor/github.com/hashicorp/go-checkpoint/versions.go generated vendored Normal file
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@ -0,0 +1,90 @@
package checkpoint
import (
"encoding/json"
"fmt"
"net/http"
"net/url"
"os"
"strconv"
"time"
"github.com/hashicorp/go-cleanhttp"
)
// VersionsParams are the parameters for a versions request.
type VersionsParams struct {
// Service is used to lookup the correct service.
Service string
// Product is used to filter the version contraints.
Product string
// Force, if true, will force the check even if CHECKPOINT_DISABLE
// is set. Within HashiCorp products, this is ONLY USED when the user
// specifically requests it. This is never automatically done without
// the user's consent.
Force bool
}
// VersionsResponse is the response for a versions request.
type VersionsResponse struct {
Service string `json:"service"`
Product string `json:"product"`
Minimum string `json:"minimum"`
Maximum string `json:"maximum"`
Excluding []string `json:"excluding"`
}
// Versions returns the version constrains for a given service and product.
func Versions(p *VersionsParams) (*VersionsResponse, error) {
if disabled := os.Getenv("CHECKPOINT_DISABLE"); disabled != "" && !p.Force {
return &VersionsResponse{}, nil
}
// Set a default timeout of 1 sec for the versions request (in milliseconds)
timeout := 1000
if _, err := strconv.Atoi(os.Getenv("CHECKPOINT_TIMEOUT")); err == nil {
timeout, _ = strconv.Atoi(os.Getenv("CHECKPOINT_TIMEOUT"))
}
v := url.Values{}
v.Set("product", p.Product)
u := &url.URL{
Scheme: "https",
Host: "checkpoint-api.hashicorp.com",
Path: fmt.Sprintf("/v1/versions/%s", p.Service),
RawQuery: v.Encode(),
}
req, err := http.NewRequest("GET", u.String(), nil)
if err != nil {
return nil, err
}
req.Header.Set("Accept", "application/json")
req.Header.Set("User-Agent", "HashiCorp/go-checkpoint")
client := cleanhttp.DefaultClient()
// We use a short timeout since checking for new versions is not critical
// enough to block on if checkpoint is broken/slow.
client.Timeout = time.Duration(timeout) * time.Millisecond
resp, err := client.Do(req)
if err != nil {
return nil, err
}
defer resp.Body.Close()
if resp.StatusCode != 200 {
return nil, fmt.Errorf("Unknown status: %d", resp.StatusCode)
}
result := &VersionsResponse{}
if err := json.NewDecoder(resp.Body).Decode(result); err != nil {
return nil, err
}
return result, nil
}