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rewrite minio runtime checks

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master
Anand Babu (AB) Periasamy 9 years ago
parent e73301944a
commit bbca70e13b
21 changed files with 1574 additions and 202 deletions
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  1. 1
      Dockerfile
  2. 29
      globals.go
  3. 15
      main.go
  4. 67
      pkg/user/user.go
  5. 6
      pkg/xl/config.go
  6. 65
      runtime-checks.go
  7. 4
      server-config.go
  8. 354
      vendor/github.com/hashicorp/go-version/LICENSE
  9. 65
      vendor/github.com/hashicorp/go-version/README.md
  10. 156
      vendor/github.com/hashicorp/go-version/constraint.go
  11. 103
      vendor/github.com/hashicorp/go-version/constraint_test.go
  12. 251
      vendor/github.com/hashicorp/go-version/version.go
  13. 17
      vendor/github.com/hashicorp/go-version/version_collection.go
  14. 46
      vendor/github.com/hashicorp/go-version/version_collection_test.go
  15. 208
      vendor/github.com/hashicorp/go-version/version_test.go
  16. 21
      vendor/github.com/minio/go-homedir/LICENSE
  17. 14
      vendor/github.com/minio/go-homedir/README.md
  18. 132
      vendor/github.com/minio/go-homedir/homedir.go
  19. 112
      vendor/github.com/minio/go-homedir/homedir_test.go
  20. 15
      vendor/vendor.json
  21. 95
      verify-runtime.go

1
Dockerfile
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@ -1,6 +1,5 @@
# use "make dockerimage" to build
FROM scratch
ENV DOCKERIMAGE 1
ADD minio.dockerimage /minio
ADD export /export
EXPOSE 9000

29
pkg/user/user_test.go → globals.go
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@ -1,5 +1,5 @@
/*
* Minio Cloud Storage, (C) 2015 Minio, Inc.
* Minio Cloud Storage, (C) 2015, 2016 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@ -14,28 +14,9 @@
* limitations under the License.
*/
package user_test
package main
import (
"testing"
"github.com/minio/minio/pkg/user"
. "gopkg.in/check.v1"
// Global constants for Minio.
const (
minGoVersion = ">= 1.5.1" // Minio requires at least Go v1.5.1
)
func Test(t *testing.T) { TestingT(t) }
type MySuite struct{}
var _ = Suite(&MySuite{})
func (s *MySuite) TestUser(c *C) {
_, err := user.Current()
c.Assert(err, IsNil)
}
func (s *MySuite) TestHomeDir(c *C) {
_, err := user.HomeDir()
c.Assert(err, IsNil)
}

15
main.go
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@ -51,16 +51,14 @@ VERSION:
{{$value}}
{{end}}`
// init - check the environment before main starts
func init() {
// Check if minio was compiled using a supported version of Golang.
checkGolangRuntimeVersion()
checkGoVersion()
if os.Getenv("DOCKERIMAGE") == "1" {
// the further checks are ignored for docker image
return
}
if os.Geteuid() == 0 {
// It is an unsafe practice to run network services as
// root. Containers are an exception.
if !isContainerized() && os.Geteuid() == 0 {
Fatalln("Please run ‘minio’ as a non-root user.")
}
@ -169,9 +167,6 @@ func main() {
probe.Init() // Set project's root source path.
probe.SetAppInfo("Release-Tag", minioReleaseTag)
probe.SetAppInfo("Commit-ID", minioShortCommitID)
if os.Getenv("DOCKERIMAGE") == "1" {
probe.SetAppInfo("Docker-Image", "true")
}
app := registerApp()
app.Before = func(c *cli.Context) error {

67
pkg/user/user.go
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@ -1,67 +0,0 @@
/*
* Minio Cloud Storage, (C) 2015 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package user
import (
"os"
"os/user"
"runtime"
"strconv"
)
// Current is a portable implementation to determine the current user.
// Golang's user.Current does not work reliably under docker or 32bit linux
//
// Two issues this code handles :-
//
// Docker Container - For static binaries NSS library will not be a part of the static binary hence user.Current() fails.
// Linux Intel 32 bit - CGO is not enabled so it will not link with NSS library.
//
func Current() (*user.User, error) {
if os.Getenv("DOCKERIMAGE") == "1" {
wd, err := os.Getwd()
if err != nil {
return nil, err
}
return &user.User{Uid: "0", Gid: "0", Username: "root", Name: "root", HomeDir: wd}, nil
}
if runtime.GOARCH == "386" {
if runtime.GOOS == "linux" || runtime.GOOS == "darwin" {
return &user.User{
Uid: strconv.Itoa(os.Getuid()),
Gid: strconv.Itoa(os.Getgid()),
Username: os.Getenv("USER"),
Name: os.Getenv("USER"),
HomeDir: os.Getenv("HOME"),
}, nil
}
}
user, e := user.Current()
if e != nil {
return nil, e
}
return user, nil
}
// HomeDir - return current home directory.
func HomeDir() (string, error) {
user, err := Current()
if err != nil {
return "", err
}
return user.HomeDir, nil
}

6
pkg/xl/config.go
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@ -17,9 +17,9 @@
package xl
import (
"os/user"
"path/filepath"
"github.com/minio/go-homedir"
"github.com/minio/minio/pkg/probe"
"github.com/minio/minio/pkg/quick"
)
@ -29,11 +29,11 @@ func getXLConfigPath() (string, *probe.Error) {
if customConfigPath != "" {
return customConfigPath, nil
}
u, err := user.Current()
homeDir, err := homedir.Dir()
if err != nil {
return "", probe.NewError(err)
}
xlConfigPath := filepath.Join(u.HomeDir, ".minio", "xl.json")
xlConfigPath := filepath.Join(homeDir, ".minio", "xl.json")
return xlConfigPath, nil
}

65
runtime-checks.go
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@ -0,0 +1,65 @@
/*
* Minio Cloud Storage, (C) 2015, 2016 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package main
import (
"fmt"
"io/ioutil"
"os"
"runtime"
"strings"
"github.com/hashicorp/go-version"
)
// isContainerized returns true if we are inside a containerized environment.
func isContainerized() bool {
// Docker containers contain ".dockerinit" at its root path.
if _, e := os.Stat("/.dockerinit"); os.IsNotExist(e) {
return true
}
// Check if cgroup policies for init process contains docker string.
if cgroupData, e := ioutil.ReadFile("/proc/1/cgroup"); e != nil {
if strings.Contains(string(cgroupData), "/docker-") {
return true
}
}
/* Add checks for non-docker containers here. */
return false
}
// check if minimum Go version is met.
func checkGoVersion() {
// Current version.
curVersion, e := version.NewVersion(runtime.Version()[2:])
if e != nil {
Fatalln("Unable to determine current go version.", e)
}
// Prepare version constraint.
constraints, e := version.NewConstraint(minGoVersion)
if e != nil {
Fatalln("Unable to check go version.")
}
// Check for minimum version.
if !constraints.Check(curVersion) {
Fatalln(fmt.Sprintf("Please recompile Minio with Golang version %s.", minGoVersion))
}
}

4
server-config.go
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@ -24,9 +24,9 @@ import (
"path/filepath"
"github.com/fatih/color"
"github.com/minio/go-homedir"
"github.com/minio/minio/pkg/probe"
"github.com/minio/minio/pkg/quick"
"github.com/minio/minio/pkg/user"
)
// configV1
@ -133,7 +133,7 @@ func getConfigPath() (string, *probe.Error) {
if customConfigPath != "" {
return customConfigPath, nil
}
homeDir, e := user.HomeDir()
homeDir, e := homedir.Dir()
if e != nil {
return "", probe.NewError(e)
}

354
vendor/github.com/hashicorp/go-version/LICENSE generated vendored
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@ -0,0 +1,354 @@
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.

65
vendor/github.com/hashicorp/go-version/README.md generated vendored
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@ -0,0 +1,65 @@
# Versioning Library for Go
[![Build Status](https://travis-ci.org/hashicorp/go-version.svg?branch=master)](https://travis-ci.org/hashicorp/go-version)
go-version is a library for parsing versions and version constraints,
and verifying versions against a set of constraints. go-version
can sort a collection of versions properly, handles prerelease/beta
versions, can increment versions, etc.
Versions used with go-version must follow [SemVer](http://semver.org/).
## Installation and Usage
Package documentation can be found on
[GoDoc](http://godoc.org/github.com/hashicorp/go-version).
Installation can be done with a normal `go get`:
```
$ go get github.com/hashicorp/go-version
```
#### Version Parsing and Comparison
```go
v1, err := version.NewVersion("1.2")
v2, err := version.NewVersion("1.5+metadata")
// Comparison example. There is also GreaterThan, Equal, and just
// a simple Compare that returns an int allowing easy >=, <=, etc.
if v1.LessThan(v2) {
fmt.Printf("%s is less than %s", v1, v2)
}
```
#### Version Constraints
```go
v1, err := version.NewVersion("1.2")
// Constraints example.
constraints, err := version.NewConstraint(">= 1.0, < 1.4")
if constraints.Check(v1) {
fmt.Printf("%s satisfies constraints %s", v1, constraints)
}
```
#### Version Sorting
```go
versionsRaw := []string{"1.1", "0.7.1", "1.4-beta", "1.4", "2"}
versions := make([]*version.Version, len(versionsRaw))
for i, raw := range versionsRaw {
v, _ := version.NewVersion(raw)
versions[i] = v
}
// After this, the versions are properly sorted
sort.Sort(version.Collection(versions))
```
## Issues and Contributing
If you find an issue with this library, please report an issue. If you'd
like, we welcome any contributions. Fork this library and submit a pull
request.

156
vendor/github.com/hashicorp/go-version/constraint.go generated vendored
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package version
import (
"fmt"
"regexp"
"strings"
)
// Constraint represents a single constraint for a version, such as
// ">= 1.0".
type Constraint struct {
f constraintFunc
check *Version
original string
}
// Constraints is a slice of constraints. We make a custom type so that
// we can add methods to it.
type Constraints []*Constraint
type constraintFunc func(v, c *Version) bool
var constraintOperators map[string]constraintFunc
var constraintRegexp *regexp.Regexp
func init() {
constraintOperators = map[string]constraintFunc{
"": constraintEqual,
"=": constraintEqual,
"!=": constraintNotEqual,
">": constraintGreaterThan,
"<": constraintLessThan,
">=": constraintGreaterThanEqual,
"<=": constraintLessThanEqual,
"~>": constraintPessimistic,
}
ops := make([]string, 0, len(constraintOperators))
for k, _ := range constraintOperators {
ops = append(ops, regexp.QuoteMeta(k))
}
constraintRegexp = regexp.MustCompile(fmt.Sprintf(
`^\s*(%s)\s*(%s)\s*$`,
strings.Join(ops, "|"),
VersionRegexpRaw))
}
// NewConstraint will parse one or more constraints from the given
// constraint string. The string must be a comma-separated list of
// constraints.
func NewConstraint(v string) (Constraints, error) {
vs := strings.Split(v, ",")
result := make([]*Constraint, len(vs))
for i, single := range vs {
c, err := parseSingle(single)
if err != nil {
return nil, err
}
result[i] = c
}
return Constraints(result), nil
}
// Check tests if a version satisfies all the constraints.
func (cs Constraints) Check(v *Version) bool {
for _, c := range cs {
if !c.Check(v) {
return false
}
}
return true
}
// Returns the string format of the constraints
func (cs Constraints) String() string {
csStr := make([]string, len(cs))
for i, c := range cs {
csStr[i] = c.String()
}
return strings.Join(csStr, ",")
}
// Check tests if a constraint is validated by the given version.
func (c *Constraint) Check(v *Version) bool {
return c.f(v, c.check)
}
func (c *Constraint) String() string {
return c.original
}
func parseSingle(v string) (*Constraint, error) {
matches := constraintRegexp.FindStringSubmatch(v)
if matches == nil {
return nil, fmt.Errorf("Malformed constraint: %s", v)
}
check, err := NewVersion(matches[2])
if err != nil {
return nil, err
}
return &Constraint{
f: constraintOperators[matches[1]],
check: check,
original: v,
}, nil
}
//-------------------------------------------------------------------
// Constraint functions
//-------------------------------------------------------------------
func constraintEqual(v, c *Version) bool {
return v.Equal(c)
}
func constraintNotEqual(v, c *Version) bool {
return !v.Equal(c)
}
func constraintGreaterThan(v, c *Version) bool {
return v.Compare(c) == 1
}
func constraintLessThan(v, c *Version) bool {
return v.Compare(c) == -1
}
func constraintGreaterThanEqual(v, c *Version) bool {
return v.Compare(c) >= 0
}
func constraintLessThanEqual(v, c *Version) bool {
return v.Compare(c) <= 0
}
func constraintPessimistic(v, c *Version) bool {
if v.LessThan(c) {
return false
}
for i := 0; i < c.si-1; i++ {
if v.segments[i] != c.segments[i] {
return false
}
}
return true
}

103
vendor/github.com/hashicorp/go-version/constraint_test.go generated vendored
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package version
import (
"testing"
)
func TestNewConstraint(t *testing.T) {
cases := []struct {
input string
count int
err bool
}{
{">= 1.2", 1, false},
{"1.0", 1, false},
{">= 1.x", 0, true},
{">= 1.2, < 1.0", 2, false},
// Out of bounds
{"11387778780781445675529500000000000000000", 0, true},
}
for _, tc := range cases {
v, err := NewConstraint(tc.input)
if tc.err && err == nil {
t.Fatalf("expected error for input: %s", tc.input)
} else if !tc.err && err != nil {
t.Fatalf("error for input %s: %s", tc.input, err)
}
if len(v) != tc.count {
t.Fatalf("input: %s\nexpected len: %d\nactual: %d",
tc.input, tc.count, len(v))
}
}
}
func TestConstraintCheck(t *testing.T) {
cases := []struct {
constraint string
version string
check bool
}{
{">= 1.0, < 1.2", "1.1.5", true},
{"< 1.0, < 1.2", "1.1.5", false},
{"= 1.0", "1.1.5", false},
{"= 1.0", "1.0.0", true},
{"1.0", "1.0.0", true},
{"~> 1.0", "2.0", false},
{"~> 1.0", "1.1", true},
{"~> 1.0", "1.2.3", true},
{"~> 1.0.0", "1.2.3", false},
{"~> 1.0.0", "1.0.7", true},
{"~> 1.0.0", "1.1.0", false},
{"~> 1.0.7", "1.0.4", false},
}
for _, tc := range cases {
c, err := NewConstraint(tc.constraint)
if err != nil {
t.Fatalf("err: %s", err)
}
v, err := NewVersion(tc.version)
if err != nil {
t.Fatalf("err: %s", err)
}
actual := c.Check(v)
expected := tc.check
if actual != expected {
t.Fatalf("Version: %s\nConstraint: %s\nExpected: %#v",
tc.version, tc.constraint, expected)
}
}
}
func TestConstraintsString(t *testing.T) {
cases := []struct {
constraint string
result string
}{
{">= 1.0, < 1.2", ""},
{"~> 1.0.7", ""},
}
for _, tc := range cases {
c, err := NewConstraint(tc.constraint)
if err != nil {
t.Fatalf("err: %s", err)
}
actual := c.String()
expected := tc.result
if expected == "" {
expected = tc.constraint
}
if actual != expected {
t.Fatalf("Constraint: %s\nExpected: %#v\nActual: %s",
tc.constraint, expected, actual)
}
}
}

251
vendor/github.com/hashicorp/go-version/version.go generated vendored
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package version
import (
"bytes"
"fmt"
"reflect"
"regexp"
"strconv"
"strings"
)
// The compiled regular expression used to test the validity of a version.
var versionRegexp *regexp.Regexp
// The raw regular expression string used for testing the validity
// of a version.
const VersionRegexpRaw string = `([0-9]+(\.[0-9]+){0,2})` +
`(-([0-9A-Za-z\-]+(\.[0-9A-Za-z\-]+)*))?` +
`(\+([0-9A-Za-z\-]+(\.[0-9A-Za-z\-]+)*))?` +
`?`
// Version represents a single version.
type Version struct {
metadata string
pre string
segments []int
si int
}
func init() {
versionRegexp = regexp.MustCompile("^" + VersionRegexpRaw + "$")
}
// NewVersion parses the given version and returns a new
// Version.
func NewVersion(v string) (*Version, error) {
matches := versionRegexp.FindStringSubmatch(v)
if matches == nil {
return nil, fmt.Errorf("Malformed version: %s", v)
}
segmentsStr := strings.Split(matches[1], ".")
segments := make([]int, len(segmentsStr), 3)
si := 0
for i, str := range segmentsStr {
val, err := strconv.ParseInt(str, 10, 32)
if err != nil {
return nil, fmt.Errorf(
"Error parsing version: %s", err)
}
segments[i] = int(val)
si += 1
}
for i := len(segments); i < 3; i++ {
segments = append(segments, 0)
}
return &Version{
metadata: matches[7],
pre: matches[4],
segments: segments,
si: si,
}, nil
}
// Must is a helper that wraps a call to a function returning (*Version, error)
// and panics if error is non-nil.
func Must(v *Version, err error) *Version {
if err != nil {
panic(err)
}
return v
}
// Compare compares this version to another version. This
// returns -1, 0, or 1 if this version is smaller, equal,
// or larger than the other version, respectively.
//
// If you want boolean results, use the LessThan, Equal,
// or GreaterThan methods.
func (v *Version) Compare(other *Version) int {
// A quick, efficient equality check
if v.String() == other.String() {
return 0
}
segmentsSelf := v.Segments()
segmentsOther := other.Segments()
// If the segments are the same, we must compare on prerelease info
if reflect.DeepEqual(segmentsSelf, segmentsOther) {
preSelf := v.Prerelease()
preOther := other.Prerelease()
if preSelf == "" && preOther == "" {
return 0
}
if preSelf == "" {
return 1
}
if preOther == "" {
return -1
}
return comparePrereleases(preSelf, preOther)
}
// Compare the segments
for i := 0; i < len(segmentsSelf); i++ {
lhs := segmentsSelf[i]
rhs := segmentsOther[i]
if lhs == rhs {
continue
} else if lhs < rhs {
return -1
} else {
return 1
}
}
panic("should not be reached")
}
func comparePart(preSelf string, preOther string) int {
if preSelf == preOther {
return 0
}
// if a part is empty, we use the other to decide
if preSelf == "" {
_, notIsNumeric := strconv.ParseInt(preOther, 10, 64)
if notIsNumeric == nil {
return -1
}
return 1
}
if preOther == "" {
_, notIsNumeric := strconv.ParseInt(preSelf, 10, 64)
if notIsNumeric == nil {
return 1
}
return -1
}
if preSelf > preOther {
return 1
}
return -1
}
func comparePrereleases(v string, other string) int {
// the same pre release!
if v == other {
return 0
}
// split both pre releases for analyse their parts
selfPreReleaseMeta := strings.Split(v, ".")
otherPreReleaseMeta := strings.Split(other, ".")
selfPreReleaseLen := len(selfPreReleaseMeta)
otherPreReleaseLen := len(otherPreReleaseMeta)
biggestLen := otherPreReleaseLen
if selfPreReleaseLen > otherPreReleaseLen {
biggestLen = selfPreReleaseLen
}
// loop for parts to find the first difference
for i := 0; i < biggestLen; i = i + 1 {
partSelfPre := ""
if i < selfPreReleaseLen {
partSelfPre = selfPreReleaseMeta[i]
}
partOtherPre := ""
if i < otherPreReleaseLen {
partOtherPre = otherPreReleaseMeta[i]
}
compare := comparePart(partSelfPre, partOtherPre)
// if parts are equals, continue the loop
if compare != 0 {
return compare
}
}
return 0
}
// Equal tests if two versions are equal.
func (v *Version) Equal(o *Version) bool {
return v.Compare(o) == 0
}
// GreaterThan tests if this version is greater than another version.
func (v *Version) GreaterThan(o *Version) bool {
return v.Compare(o) > 0
}
// LessThan tests if this version is less than another version.
func (v *Version) LessThan(o *Version) bool {
return v.Compare(o) < 0
}
// Metadata returns any metadata that was part of the version
// string.
//
// Metadata is anything that comes after the "+" in the version.
// For example, with "1.2.3+beta", the metadata is "beta".
func (v *Version) Metadata() string {
return v.metadata
}
// Prerelease returns any prerelease data that is part of the version,
// or blank if there is no prerelease data.
//
// Prerelease information is anything that comes after the "-" in the
// version (but before any metadata). For example, with "1.2.3-beta",
// the prerelease information is "beta".
func (v *Version) Prerelease() string {
return v.pre
}
// Segments returns the numeric segments of the version as a slice.
//
// This excludes any metadata or pre-release information. For example,
// for a version "1.2.3-beta", segments will return a slice of
// 1, 2, 3.
func (v *Version) Segments() []int {
return v.segments
}
// String returns the full version string included pre-release
// and metadata information.
func (v *Version) String() string {
var buf bytes.Buffer
fmt.Fprintf(&buf, "%d.%d.%d", v.segments[0], v.segments[1], v.segments[2])
if v.pre != "" {
fmt.Fprintf(&buf, "-%s", v.pre)
}
if v.metadata != "" {
fmt.Fprintf(&buf, "+%s", v.metadata)
}
return buf.String()
}

17
vendor/github.com/hashicorp/go-version/version_collection.go generated vendored
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package version
// Collection is a type that implements the sort.Interface interface
// so that versions can be sorted.
type Collection []*Version
func (v Collection) Len() int {
return len(v)
}
func (v Collection) Less(i, j int) bool {
return v[i].LessThan(v[j])
}
func (v Collection) Swap(i, j int) {
v[i], v[j] = v[j], v[i]
}

46
vendor/github.com/hashicorp/go-version/version_collection_test.go generated vendored
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@ -0,0 +1,46 @@
package version
import (
"reflect"
"sort"
"testing"
)
func TestCollection(t *testing.T) {
versionsRaw := []string{
"1.1.1",
"1.0",
"1.2",
"2",
"0.7.1",
}
versions := make([]*Version, len(versionsRaw))
for i, raw := range versionsRaw {
v, err := NewVersion(raw)
if err != nil {
t.Fatalf("err: %s", err)
}
versions[i] = v
}
sort.Sort(Collection(versions))
actual := make([]string, len(versions))
for i, v := range versions {
actual[i] = v.String()
}
expected := []string{
"0.7.1",
"1.0.0",
"1.1.1",
"1.2.0",
"2.0.0",
}
if !reflect.DeepEqual(actual, expected) {
t.Fatalf("bad: %#v", actual)
}
}

208
vendor/github.com/hashicorp/go-version/version_test.go generated vendored
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@ -0,0 +1,208 @@
package version
import (
"reflect"
"testing"
)
func TestNewVersion(t *testing.T) {
cases := []struct {
version string
err bool
}{
{"1.2.3", false},
{"1.0", false},
{"1", false},
{"1.2.beta", true},
{"foo", true},
{"1.2-5", false},
{"1.2-beta.5", false},
{"\n1.2", true},
{"1.2.0-x.Y.0+metadata", false},
{"1.2.0-x.Y.0+metadata-width-hypen", false},
{"1.2.3-rc1-with-hypen", false},
{"1.2.3.4", true},
}
for _, tc := range cases {
_, err := NewVersion(tc.version)
if tc.err && err == nil {
t.Fatalf("expected error for version: %s", tc.version)
} else if !tc.err && err != nil {
t.Fatalf("error for version %s: %s", tc.version, err)
}
}
}
func TestVersionCompare(t *testing.T) {
cases := []struct {
v1 string
v2 string
expected int
}{
{"1.2.3", "1.4.5", -1},
{"1.2-beta", "1.2-beta", 0},
{"1.2", "1.1.4", 1},
{"1.2", "1.2-beta", 1},
{"1.2+foo", "1.2+beta", 0},
}
for _, tc := range cases {
v1, err := NewVersion(tc.v1)
if err != nil {
t.Fatalf("err: %s", err)
}
v2, err := NewVersion(tc.v2)
if err != nil {
t.Fatalf("err: %s", err)
}
actual := v1.Compare(v2)
expected := tc.expected
if actual != expected {
t.Fatalf(
"%s <=> %s\nexpected: %d\nactual: %d",
tc.v1, tc.v2,
expected, actual)
}
}
}
func TestComparePreReleases(t *testing.T) {
cases := []struct {
v1 string
v2 string
expected int
}{
{"1.2-beta.2", "1.2-beta.2", 0},
{"1.2-beta.1", "1.2-beta.2", -1},
{"3.2-alpha.1", "3.2-alpha", 1},
{"1.2-beta.2", "1.2-beta.1", 1},
{"1.2-beta", "1.2-beta.3", -1},
{"1.2-alpha", "1.2-beta.3", -1},
{"1.2-beta", "1.2-alpha.3", 1},
{"3.0-alpha.3", "3.0-rc.1", -1},
{"3.0-alpha3", "3.0-rc1", -1},
{"3.0-alpha.1", "3.0-alpha.beta", -1},
{"5.4-alpha", "5.4-alpha.beta", 1},
}
for _, tc := range cases {
v1, err := NewVersion(tc.v1)
if err != nil {
t.Fatalf("err: %s", err)
}
v2, err := NewVersion(tc.v2)
if err != nil {
t.Fatalf("err: %s", err)
}
actual := v1.Compare(v2)
expected := tc.expected
if actual != expected {
t.Fatalf(
"%s <=> %s\nexpected: %d\nactual: %d",
tc.v1, tc.v2,
expected, actual)
}
}
}
func TestVersionMetadata(t *testing.T) {
cases := []struct {
version string
expected string
}{
{"1.2.3", ""},
{"1.2-beta", ""},
{"1.2.0-x.Y.0", ""},
{"1.2.0-x.Y.0+metadata", "metadata"},
}
for _, tc := range cases {
v, err := NewVersion(tc.version)
if err != nil {
t.Fatalf("err: %s", err)
}
actual := v.Metadata()
expected := tc.expected
if actual != expected {
t.Fatalf("expected: %s\nactual: %s", expected, actual)
}
}
}
func TestVersionPrerelease(t *testing.T) {
cases := []struct {
version string
expected string
}{
{"1.2.3", ""},
{"1.2-beta", "beta"},
{"1.2.0-x.Y.0", "x.Y.0"},
{"1.2.0-x.Y.0+metadata", "x.Y.0"},
}
for _, tc := range cases {
v, err := NewVersion(tc.version)
if err != nil {
t.Fatalf("err: %s", err)
}
actual := v.Prerelease()
expected := tc.expected
if actual != expected {
t.Fatalf("expected: %s\nactual: %s", expected, actual)
}
}
}
func TestVersionSegments(t *testing.T) {
cases := []struct {
version string
expected []int
}{
{"1.2.3", []int{1, 2, 3}},
{"1.2-beta", []int{1, 2, 0}},
{"1-x.Y.0", []int{1, 0, 0}},
{"1.2.0-x.Y.0+metadata", []int{1, 2, 0}},
}
for _, tc := range cases {
v, err := NewVersion(tc.version)
if err != nil {
t.Fatalf("err: %s", err)
}
actual := v.Segments()
expected := tc.expected
if !reflect.DeepEqual(actual, expected) {
t.Fatalf("expected: %#v\nactual: %#v", expected, actual)
}
}
}
func TestVersionString(t *testing.T) {
cases := [][]string{
{"1.2.3", "1.2.3"},
{"1.2-beta", "1.2.0-beta"},
{"1.2.0-x.Y.0", "1.2.0-x.Y.0"},
{"1.2.0-x.Y.0+metadata", "1.2.0-x.Y.0+metadata"},
}
for _, tc := range cases {
v, err := NewVersion(tc[0])
if err != nil {
t.Fatalf("err: %s", err)
}
actual := v.String()
expected := tc[1]
if actual != expected {
t.Fatalf("expected: %s\nactual: %s", expected, actual)
}
}
}

21
vendor/github.com/minio/go-homedir/LICENSE generated vendored
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@ -0,0 +1,21 @@
The MIT License (MIT)
Copyright (c) 2013 Mitchell Hashimoto
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

14
vendor/github.com/minio/go-homedir/README.md generated vendored
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@ -0,0 +1,14 @@
# go-homedir
This is a Go library for detecting the user's home directory without
the use of cgo, so the library can be used in cross-compilation environments.
Usage is incredibly simple, just call `homedir.Dir()` to get the home directory
for a user, and `homedir.Expand()` to expand the `~` in a path to the home
directory.
**Why not just use `os/user`?** The built-in `os/user` package requires
cgo on Darwin systems. This means that any Go code that uses that package
cannot cross compile. But 99% of the time the use for `os/user` is just to
retrieve the home directory, which we can do for the current user without
cgo. This library does that, enabling cross-compilation.

132
vendor/github.com/minio/go-homedir/homedir.go generated vendored
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package homedir
import (
"bytes"
"errors"
"os"
"os/exec"
"path/filepath"
"runtime"
"strconv"
"strings"
"sync"
)
// DisableCache will disable caching of the home directory. Caching is enabled
// by default.
var DisableCache bool
var homedirCache string
var cacheLock sync.RWMutex
// Dir returns the home directory for the executing user.
//
// This uses an OS-specific method for discovering the home directory.
// An error is returned if a home directory cannot be detected.
func Dir() (string, error) {
if !DisableCache {
cacheLock.RLock()
cached := homedirCache
cacheLock.RUnlock()
if cached != "" {
return cached, nil
}
}
cacheLock.Lock()
defer cacheLock.Unlock()
var result string
var err error
if runtime.GOOS == "windows" {
result, err = dirWindows()
} else {
// Unix-like system, so just assume Unix
result, err = dirUnix()
}
if err != nil {
return "", err
}
homedirCache = result
return result, nil
}
// Expand expands the path to include the home directory if the path
// is prefixed with `~`. If it isn't prefixed with `~`, the path is
// returned as-is.
func Expand(path string) (string, error) {
if len(path) == 0 {
return path, nil
}
if path[0] != '~' {
return path, nil
}
if len(path) > 1 && path[1] != '/' && path[1] != '\\' {
return "", errors.New("cannot expand user-specific home dir")
}
dir, err := Dir()
if err != nil {
return "", err
}
return filepath.Join(dir, path[1:]), nil
}
func dirUnix() (string, error) {
// First prefer the HOME environmental variable
if home := os.Getenv("HOME"); home != "" {
return home, nil
}
// If that fails, try getent
var stdout bytes.Buffer
cmd := exec.Command("getent", "passwd", strconv.Itoa(os.Getuid()))
cmd.Stdout = &stdout
if err := cmd.Run(); err != nil {
// If "getent" is missing, ignore it
if err != exec.ErrNotFound {
return "", err
}
} else {
if passwd := strings.TrimSpace(stdout.String()); passwd != "" {
// username:password:uid:gid:gecos:home:shell
passwdParts := strings.SplitN(passwd, ":", 7)
if len(passwdParts) > 5 {
return passwdParts[5], nil
}
}
}
// If all else fails, try the shell
stdout.Reset()
cmd = exec.Command("sh", "-c", "cd && pwd")
cmd.Stdout = &stdout
if err := cmd.Run(); err != nil {
return "", err
}
result := strings.TrimSpace(stdout.String())
if result == "" {
return "", errors.New("blank output when reading home directory")
}
return result, nil
}
func dirWindows() (string, error) {
drive := os.Getenv("HOMEDRIVE")
path := os.Getenv("HOMEPATH")
home := drive + path
if drive == "" || path == "" {
home = os.Getenv("USERPROFILE")
}
if home == "" {
return "", errors.New("HOMEDRIVE, HOMEPATH, and USERPROFILE are blank")
}
return home, nil
}

112
vendor/github.com/minio/go-homedir/homedir_test.go generated vendored
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@ -0,0 +1,112 @@
package homedir
import (
"fmt"
"os"
"os/user"
"testing"
)
func patchEnv(key, value string) func() {
bck := os.Getenv(key)
deferFunc := func() {
os.Setenv(key, bck)
}
os.Setenv(key, value)
return deferFunc
}
func BenchmarkDir(b *testing.B) {
// We do this for any "warmups"
for i := 0; i < 10; i++ {
Dir()
}
b.ResetTimer()
for i := 0; i < b.N; i++ {
Dir()
}
}
func TestDir(t *testing.T) {
u, err := user.Current()
if err != nil {
t.Fatalf("err: %s", err)
}
dir, err := Dir()
if err != nil {
t.Fatalf("err: %s", err)
}
if u.HomeDir != dir {
t.Fatalf("%#v != %#v", u.HomeDir, dir)
}
}
func TestExpand(t *testing.T) {
u, err := user.Current()
if err != nil {
t.Fatalf("err: %s", err)
}
cases := []struct {
Input string
Output string
Err bool
}{
{
"/foo",
"/foo",
false,
},
{
"~/foo",
fmt.Sprintf("%s/foo", u.HomeDir),
false,
},
{
"",
"",
false,
},
{
"~",
u.HomeDir,
false,
},
{
"~foo/foo",
"",
true,
},
}
for _, tc := range cases {
actual, err := Expand(tc.Input)
if (err != nil) != tc.Err {
t.Fatalf("Input: %#v\n\nErr: %s", tc.Input, err)
}
if actual != tc.Output {
t.Fatalf("Input: %#v\n\nOutput: %#v", tc.Input, actual)
}
}
DisableCache = true
defer func() { DisableCache = false }()
defer patchEnv("HOME", "/custom/path/")()
expected := "/custom/path/foo/bar"
actual, err := Expand("~/foo/bar")
if err != nil {
t.Errorf("No error is expected, got: %v", err)
} else if actual != "/custom/path/foo/bar" {
t.Errorf("Expected: %v; actual: %v", expected, actual)
}
}

15
vendor/vendor.json vendored
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@ -47,6 +47,11 @@
"revision": "64e20900b8aa38bb0771dec71ba3bcc2b07fc8ec",
"revisionTime": "2015-11-05T07:45:51+08:00"
},
{
"path": "github.com/hashicorp/go-version",
"revision": "7e3c02b30806fa5779d3bdfc152ce4c6f40e7b38",
"revisionTime": "2016-01-19T13:13:26-08:00"
},
{
"path": "github.com/mattn/go-isatty",
"revision": "7fcbc72f853b92b5720db4a6b8482be612daef24",
@ -57,11 +62,21 @@
"revision": "c4a07c7b68db77ccd119183fb1d01dd5972434ab",
"revisionTime": "2015-11-18T20:00:48-08:00"
},
{
"path": "github.com/minio/go-homedir",
"revision": "d682a8f0cf139663a984ff12528da460ca963de9",
"revisionTime": "2015-10-24T22:24:27-07:00"
},
{
"path": "github.com/minio/minio-go",
"revision": "280f16a52008d3ebba1bd64398b9b082e6738386",
"revisionTime": "2016-02-07T03:45:25-08:00"
},
{
"path": "github.com/mitchellh/go-homedir",
"revision": "d682a8f0cf139663a984ff12528da460ca963de9",
"revisionTime": "2015-10-24T22:24:27-07:00"
},
{
"path": "github.com/rs/cors",
"revision": "eb527c8097e0f19a3ff7b253a3fe70545070f420",

95
verify-runtime.go
Unescape View File

@ -1,95 +0,0 @@
/*
* Minio Cloud Storage, (C) 2015 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package main
import (
"fmt"
"regexp"
"runtime"
"strconv"
"strings"
)
var minGolangRuntimeVersion = "1.5.1"
// following code handles the current Golang release styles, we might have to update them in future
// if golang community divulges from the below formatting style.
const (
betaRegexp = "beta[0-9]"
rcRegexp = "rc[0-9]"
)
func getNormalizedGolangVersion() string {
version := strings.TrimPrefix(runtime.Version(), "go")
br := regexp.MustCompile(betaRegexp)
rr := regexp.MustCompile(rcRegexp)
betaStr := br.FindString(version)
version = strings.TrimRight(version, betaStr)
rcStr := rr.FindString(version)
version = strings.TrimRight(version, rcStr)
return version
}
type golangVersion struct {
major, minor, patch string
}
func newVersion(v string) golangVersion {
ver := golangVersion{}
verSlice := strings.Split(v, ".")
if len(verSlice) < 2 {
Fatalln("Version string missing major and minor versions, cannot proceed exiting.")
}
if len(verSlice) > 3 {
Fatalf("Unknown Version style format, newVersion only supports ‘major.minor.patch’ not ‘%s’.\n", v)
}
ver.major = verSlice[0]
ver.minor = verSlice[1]
if len(verSlice) == 3 {
ver.patch = verSlice[2]
} else {
ver.patch = "0"
}
return ver
}
func (v1 golangVersion) String() string {
return fmt.Sprintf("%s%s%s", v1.major, v1.minor, v1.patch)
}
func (v1 golangVersion) Version() int {
ver, e := strconv.Atoi(v1.String())
if e != nil {
Fatalln("Unable to parse version string.")
}
return ver
}
func (v1 golangVersion) LessThan(v2 golangVersion) bool {
if v1.Version() < v2.Version() {
return true
}
return false
}
func checkGolangRuntimeVersion() {
v1 := newVersion(getNormalizedGolangVersion())
v2 := newVersion(minGolangRuntimeVersion)
if v1.LessThan(v2) {
Fatalln("Old Golang runtime version ‘" + v1.String() + "’ detected., ‘minio’ requires minimum go1.5.1 or later.")
}
}
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