diff --git a/Godeps/Godeps.json b/Godeps/Godeps.json index 091c2d5e4..6641f2326 100644 --- a/Godeps/Godeps.json +++ b/Godeps/Godeps.json @@ -647,6 +647,10 @@ "ImportPath": "github.com/hashicorp/go-retryablehttp", "Rev": "24fda80b7c713c52649e57ce20100d453f7bdb24" }, + { + "ImportPath": "github.com/hashicorp/go-uuid", + "Rev": "36289988d83ca270bc07c234c36f364b0dd9c9a7" + }, { "ImportPath": "github.com/hashicorp/go-version", "Rev": "7e3c02b30806fa5779d3bdfc152ce4c6f40e7b38" diff --git a/config/interpolate_funcs.go b/config/interpolate_funcs.go index db47cc655..8a04e9316 100644 --- a/config/interpolate_funcs.go +++ b/config/interpolate_funcs.go @@ -17,6 +17,7 @@ import ( "strings" "github.com/apparentlymart/go-cidr/cidr" + "github.com/hashicorp/go-uuid" "github.com/hashicorp/hil/ast" "github.com/mitchellh/go-homedir" ) @@ -42,6 +43,7 @@ func Funcs() map[string]ast.Function { "length": interpolationFuncLength(), "lower": interpolationFuncLower(), "md5": interpolationFuncMd5(), + "uuid": interpolationFuncUUID(), "replace": interpolationFuncReplace(), "sha1": interpolationFuncSha1(), "sha256": interpolationFuncSha256(), @@ -682,3 +684,13 @@ func interpolationFuncBase64Sha256() ast.Function { }, } } + +func interpolationFuncUUID() ast.Function { + return ast.Function{ + ArgTypes: []ast.Type{}, + ReturnType: ast.TypeString, + Callback: func(args []interface{}) (interface{}, error) { + return uuid.GenerateUUID() + }, + } +} diff --git a/config/interpolate_funcs_test.go b/config/interpolate_funcs_test.go index fdccec2ea..55b435933 100644 --- a/config/interpolate_funcs_test.go +++ b/config/interpolate_funcs_test.go @@ -953,6 +953,28 @@ func TestInterpolateFuncMd5(t *testing.T) { }) } +func TestInterpolateFuncUUID(t *testing.T) { + results := make(map[string]bool) + + for i := 0; i < 100; i++ { + ast, err := hil.Parse("${uuid()}") + if err != nil { + t.Fatalf("err: %s", err) + } + + out, _, err := hil.Eval(ast, langEvalConfig(nil)) + if err != nil { + t.Fatalf("err: %s", err) + } + + if results[out.(string)] { + t.Fatalf("Got unexpected duplicate uuid: %s", out) + } + + results[out.(string)] = true + } +} + type testFunctionConfig struct { Cases []testFunctionCase Vars map[string]ast.Variable diff --git a/vendor/github.com/hashicorp/go-uuid/LICENSE b/vendor/github.com/hashicorp/go-uuid/LICENSE new file mode 100644 index 000000000..e87a115e4 --- /dev/null +++ b/vendor/github.com/hashicorp/go-uuid/LICENSE @@ -0,0 +1,363 @@ +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. + diff --git a/vendor/github.com/hashicorp/go-uuid/README.md b/vendor/github.com/hashicorp/go-uuid/README.md new file mode 100644 index 000000000..21fdda4ad --- /dev/null +++ b/vendor/github.com/hashicorp/go-uuid/README.md @@ -0,0 +1,8 @@ +# uuid + +Generates UUID-format strings using purely high quality random bytes. + +Documentation +============= + +The full documentation is available on [Godoc](http://godoc.org/github.com/hashicorp/go-uuid). diff --git a/vendor/github.com/hashicorp/go-uuid/uuid.go b/vendor/github.com/hashicorp/go-uuid/uuid.go new file mode 100644 index 000000000..322b522c2 --- /dev/null +++ b/vendor/github.com/hashicorp/go-uuid/uuid.go @@ -0,0 +1,57 @@ +package uuid + +import ( + "crypto/rand" + "encoding/hex" + "fmt" +) + +// GenerateUUID is used to generate a random UUID +func GenerateUUID() (string, error) { + buf := make([]byte, 16) + if _, err := rand.Read(buf); err != nil { + return "", fmt.Errorf("failed to read random bytes: %v", err) + } + + return FormatUUID(buf) +} + +func FormatUUID(buf []byte) (string, error) { + if len(buf) != 16 { + return "", fmt.Errorf("wrong length byte slice (%d)", len(buf)) + } + + return fmt.Sprintf("%08x-%04x-%04x-%04x-%12x", + buf[0:4], + buf[4:6], + buf[6:8], + buf[8:10], + buf[10:16]), nil +} + +func ParseUUID(uuid string) ([]byte, error) { + if len(uuid) != 36 { + return nil, fmt.Errorf("uuid string is wrong length") + } + + hyph := []byte("-") + + if uuid[8] != hyph[0] || + uuid[13] != hyph[0] || + uuid[18] != hyph[0] || + uuid[23] != hyph[0] { + return nil, fmt.Errorf("uuid is improperly formatted") + } + + hexStr := uuid[0:8] + uuid[9:13] + uuid[14:18] + uuid[19:23] + uuid[24:36] + + ret, err := hex.DecodeString(hexStr) + if err != nil { + return nil, err + } + if len(ret) != 16 { + return nil, fmt.Errorf("decoded hex is the wrong length") + } + + return ret, nil +} diff --git a/website/source/docs/configuration/interpolation.html.md b/website/source/docs/configuration/interpolation.html.md index 2f6dacde1..c1be98548 100644 --- a/website/source/docs/configuration/interpolation.html.md +++ b/website/source/docs/configuration/interpolation.html.md @@ -198,6 +198,8 @@ The supported built-in functions are: * `upper(string)` - Returns a copy of the string with all Unicode letters mapped to their upper case. + * `uuid()` - Returns a UUID string in RFC 4122 v4 format. This string will change with every invocation of the function, so in order to prevent diffs on every plan & apply, it must be used with the [`ignore_changes`](/docs/configuration/resources.html#ignore-changes) lifecycle attribute. + ## Templates Long strings can be managed using templates. [Templates](/docs/providers/template/index.html) are [resources](/docs/configuration/resources.html) defined by a filename and some variables to use during interpolation. They have a computed `rendered` attribute containing the result. diff --git a/website/source/docs/configuration/resources.html.md b/website/source/docs/configuration/resources.html.md index 11fb9a9c5..07cde03a6 100644 --- a/website/source/docs/configuration/resources.html.md +++ b/website/source/docs/configuration/resources.html.md @@ -68,6 +68,8 @@ The `lifecycle` block allows the following keys to be set: destruction of a given resource. When this is set to `true`, any plan that includes a destroy of this resource will return an error message. + + * `ignore_changes` (list of strings) - Customizes how diffs are evaluated for resources, allowing individual attributes to be ignored through changes. As an example, this can be used to ignore dynamic changes to the