pulumi/sdk/go/common/tokens/stack_name.go

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Add tokens.StackName (#14487) <!--- Thanks so much for your contribution! If this is your first time contributing, please ensure that you have read the [CONTRIBUTING](https://github.com/pulumi/pulumi/blob/master/CONTRIBUTING.md) documentation. --> # Description <!--- Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. --> This adds a new type `tokens.StackName` which is a relatively strongly typed container for a stack name. The only weakly typed aspect of it is Go will always allow the "zero" value to be created for a struct, which for a stack name is the empty string which is invalid. To prevent introducing unexpected empty strings when working with stack names the `String()` method will panic for zero initialized stack names. Apart from the zero value, all other instances of `StackName` are via `ParseStackName` which returns a descriptive error if the string is not valid. This PR only updates "pkg/" to use this type. There are a number of places in "sdk/" which could do with this type as well, but there's no harm in doing a staggered roll out, and some parts of "sdk/" are user facing and will probably have to stay on the current `tokens.Name` and `tokens.QName` types. There are two places in the system where we panic on invalid stack names, both in the http backend. This _should_ be fine as we've had long standing validation that stacks created in the service are valid stack names. Just in case people have managed to introduce invalid stack names, there is the `PULUMI_DISABLE_VALIDATION` environment variable which will turn off the validation _and_ panicing for stack names. Users can use that to temporarily disable the validation and continue working, but it should only be seen as a temporary measure. If they have invalid names they should rename them, or if they think they should be valid raise an issue with us to change the validation code. ## Checklist - [x] I have run `make tidy` to update any new dependencies - [x] I have run `make lint` to verify my code passes the lint check - [ ] I have formatted my code using `gofumpt` <!--- Please provide details if the checkbox below is to be left unchecked. --> - [x] I have added tests that prove my fix is effective or that my feature works <!--- User-facing changes require a CHANGELOG entry. --> - [ ] I have run `make changelog` and committed the `changelog/pending/<file>` documenting my change <!-- If the change(s) in this PR is a modification of an existing call to the Pulumi Cloud, then the service should honor older versions of the CLI where this change would not exist. You must then bump the API version in /pkg/backend/httpstate/client/api.go, as well as add it to the service. --> - [ ] Yes, there are changes in this PR that warrants bumping the Pulumi Cloud API version <!-- @Pulumi employees: If yes, you must submit corresponding changes in the service repo. -->
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// Copyright 2016-2023, Pulumi Corporation.
//
// 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 tokens
import (
Enable perfsprint linter (#14813) <!--- Thanks so much for your contribution! If this is your first time contributing, please ensure that you have read the [CONTRIBUTING](https://github.com/pulumi/pulumi/blob/master/CONTRIBUTING.md) documentation. --> # Description <!--- Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. --> Prompted by a comment in another review: https://github.com/pulumi/pulumi/pull/14654#discussion_r1419995945 This lints that we don't use `fmt.Errorf` when `errors.New` will suffice, it also covers a load of other cases where `Sprintf` is sub-optimal. Most of these edits were made by running `perfsprint --fix`. ## Checklist - [x] I have run `make tidy` to update any new dependencies - [x] I have run `make lint` to verify my code passes the lint check - [x] I have formatted my code using `gofumpt` <!--- Please provide details if the checkbox below is to be left unchecked. --> - [ ] I have added tests that prove my fix is effective or that my feature works <!--- User-facing changes require a CHANGELOG entry. --> - [ ] I have run `make changelog` and committed the `changelog/pending/<file>` documenting my change <!-- If the change(s) in this PR is a modification of an existing call to the Pulumi Cloud, then the service should honor older versions of the CLI where this change would not exist. You must then bump the API version in /pkg/backend/httpstate/client/api.go, as well as add it to the service. --> - [ ] Yes, there are changes in this PR that warrants bumping the Pulumi Cloud API version <!-- @Pulumi employees: If yes, you must submit corresponding changes in the service repo. -->
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"errors"
Add tokens.StackName (#14487) <!--- Thanks so much for your contribution! If this is your first time contributing, please ensure that you have read the [CONTRIBUTING](https://github.com/pulumi/pulumi/blob/master/CONTRIBUTING.md) documentation. --> # Description <!--- Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. --> This adds a new type `tokens.StackName` which is a relatively strongly typed container for a stack name. The only weakly typed aspect of it is Go will always allow the "zero" value to be created for a struct, which for a stack name is the empty string which is invalid. To prevent introducing unexpected empty strings when working with stack names the `String()` method will panic for zero initialized stack names. Apart from the zero value, all other instances of `StackName` are via `ParseStackName` which returns a descriptive error if the string is not valid. This PR only updates "pkg/" to use this type. There are a number of places in "sdk/" which could do with this type as well, but there's no harm in doing a staggered roll out, and some parts of "sdk/" are user facing and will probably have to stay on the current `tokens.Name` and `tokens.QName` types. There are two places in the system where we panic on invalid stack names, both in the http backend. This _should_ be fine as we've had long standing validation that stacks created in the service are valid stack names. Just in case people have managed to introduce invalid stack names, there is the `PULUMI_DISABLE_VALIDATION` environment variable which will turn off the validation _and_ panicing for stack names. Users can use that to temporarily disable the validation and continue working, but it should only be seen as a temporary measure. If they have invalid names they should rename them, or if they think they should be valid raise an issue with us to change the validation code. ## Checklist - [x] I have run `make tidy` to update any new dependencies - [x] I have run `make lint` to verify my code passes the lint check - [ ] I have formatted my code using `gofumpt` <!--- Please provide details if the checkbox below is to be left unchecked. --> - [x] I have added tests that prove my fix is effective or that my feature works <!--- User-facing changes require a CHANGELOG entry. --> - [ ] I have run `make changelog` and committed the `changelog/pending/<file>` documenting my change <!-- If the change(s) in this PR is a modification of an existing call to the Pulumi Cloud, then the service should honor older versions of the CLI where this change would not exist. You must then bump the API version in /pkg/backend/httpstate/client/api.go, as well as add it to the service. --> - [ ] Yes, there are changes in this PR that warrants bumping the Pulumi Cloud API version <!-- @Pulumi employees: If yes, you must submit corresponding changes in the service repo. -->
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"fmt"
"regexp"
"github.com/pulumi/pulumi/sdk/v3/go/common/env"
"github.com/pulumi/pulumi/sdk/v3/go/common/util/contract"
)
// StackName is a valid stack name. It should always be initialised via ParseStackName, the use of it's zero
// value will panic.
type StackName struct {
str string
}
// IsEmpty returns true if the stack name is empty.
func (sn StackName) IsEmpty() bool {
return sn.str == ""
}
// String implements fmt.Stringer. This method panics if StackName was zero initialized.
func (sn StackName) String() string {
if !env.DisableValidation.Value() {
Add tokens.StackName (#14487) <!--- Thanks so much for your contribution! If this is your first time contributing, please ensure that you have read the [CONTRIBUTING](https://github.com/pulumi/pulumi/blob/master/CONTRIBUTING.md) documentation. --> # Description <!--- Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. --> This adds a new type `tokens.StackName` which is a relatively strongly typed container for a stack name. The only weakly typed aspect of it is Go will always allow the "zero" value to be created for a struct, which for a stack name is the empty string which is invalid. To prevent introducing unexpected empty strings when working with stack names the `String()` method will panic for zero initialized stack names. Apart from the zero value, all other instances of `StackName` are via `ParseStackName` which returns a descriptive error if the string is not valid. This PR only updates "pkg/" to use this type. There are a number of places in "sdk/" which could do with this type as well, but there's no harm in doing a staggered roll out, and some parts of "sdk/" are user facing and will probably have to stay on the current `tokens.Name` and `tokens.QName` types. There are two places in the system where we panic on invalid stack names, both in the http backend. This _should_ be fine as we've had long standing validation that stacks created in the service are valid stack names. Just in case people have managed to introduce invalid stack names, there is the `PULUMI_DISABLE_VALIDATION` environment variable which will turn off the validation _and_ panicing for stack names. Users can use that to temporarily disable the validation and continue working, but it should only be seen as a temporary measure. If they have invalid names they should rename them, or if they think they should be valid raise an issue with us to change the validation code. ## Checklist - [x] I have run `make tidy` to update any new dependencies - [x] I have run `make lint` to verify my code passes the lint check - [ ] I have formatted my code using `gofumpt` <!--- Please provide details if the checkbox below is to be left unchecked. --> - [x] I have added tests that prove my fix is effective or that my feature works <!--- User-facing changes require a CHANGELOG entry. --> - [ ] I have run `make changelog` and committed the `changelog/pending/<file>` documenting my change <!-- If the change(s) in this PR is a modification of an existing call to the Pulumi Cloud, then the service should honor older versions of the CLI where this change would not exist. You must then bump the API version in /pkg/backend/httpstate/client/api.go, as well as add it to the service. --> - [ ] Yes, there are changes in this PR that warrants bumping the Pulumi Cloud API version <!-- @Pulumi employees: If yes, you must submit corresponding changes in the service repo. -->
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contract.Assertf(sn.str != "", "stack name must not be empty")
}
return sn.str
}
// Q is a convenience method that returns the stack name as a QName. This method panics if StackName was zero
// initialized.
func (sn StackName) Q() QName {
return QName(sn.String())
}
var stackNameRegex = regexp.MustCompile("^[A-Za-z0-9_.-]*")
// ParseStackName parses a stack name from a string.
func ParseStackName(s string) (StackName, error) {
// Temporary flag to allow stack names validation to be disabled for the time being. Be sure to update the
// DisableValidation help text when this is removed.
if env.DisableValidation.Value() {
return StackName{s}, nil
}
if s == "" {
Enable perfsprint linter (#14813) <!--- Thanks so much for your contribution! If this is your first time contributing, please ensure that you have read the [CONTRIBUTING](https://github.com/pulumi/pulumi/blob/master/CONTRIBUTING.md) documentation. --> # Description <!--- Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. --> Prompted by a comment in another review: https://github.com/pulumi/pulumi/pull/14654#discussion_r1419995945 This lints that we don't use `fmt.Errorf` when `errors.New` will suffice, it also covers a load of other cases where `Sprintf` is sub-optimal. Most of these edits were made by running `perfsprint --fix`. ## Checklist - [x] I have run `make tidy` to update any new dependencies - [x] I have run `make lint` to verify my code passes the lint check - [x] I have formatted my code using `gofumpt` <!--- Please provide details if the checkbox below is to be left unchecked. --> - [ ] I have added tests that prove my fix is effective or that my feature works <!--- User-facing changes require a CHANGELOG entry. --> - [ ] I have run `make changelog` and committed the `changelog/pending/<file>` documenting my change <!-- If the change(s) in this PR is a modification of an existing call to the Pulumi Cloud, then the service should honor older versions of the CLI where this change would not exist. You must then bump the API version in /pkg/backend/httpstate/client/api.go, as well as add it to the service. --> - [ ] Yes, there are changes in this PR that warrants bumping the Pulumi Cloud API version <!-- @Pulumi employees: If yes, you must submit corresponding changes in the service repo. -->
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return StackName{}, errors.New("a stack name may not be empty")
Add tokens.StackName (#14487) <!--- Thanks so much for your contribution! If this is your first time contributing, please ensure that you have read the [CONTRIBUTING](https://github.com/pulumi/pulumi/blob/master/CONTRIBUTING.md) documentation. --> # Description <!--- Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. --> This adds a new type `tokens.StackName` which is a relatively strongly typed container for a stack name. The only weakly typed aspect of it is Go will always allow the "zero" value to be created for a struct, which for a stack name is the empty string which is invalid. To prevent introducing unexpected empty strings when working with stack names the `String()` method will panic for zero initialized stack names. Apart from the zero value, all other instances of `StackName` are via `ParseStackName` which returns a descriptive error if the string is not valid. This PR only updates "pkg/" to use this type. There are a number of places in "sdk/" which could do with this type as well, but there's no harm in doing a staggered roll out, and some parts of "sdk/" are user facing and will probably have to stay on the current `tokens.Name` and `tokens.QName` types. There are two places in the system where we panic on invalid stack names, both in the http backend. This _should_ be fine as we've had long standing validation that stacks created in the service are valid stack names. Just in case people have managed to introduce invalid stack names, there is the `PULUMI_DISABLE_VALIDATION` environment variable which will turn off the validation _and_ panicing for stack names. Users can use that to temporarily disable the validation and continue working, but it should only be seen as a temporary measure. If they have invalid names they should rename them, or if they think they should be valid raise an issue with us to change the validation code. ## Checklist - [x] I have run `make tidy` to update any new dependencies - [x] I have run `make lint` to verify my code passes the lint check - [ ] I have formatted my code using `gofumpt` <!--- Please provide details if the checkbox below is to be left unchecked. --> - [x] I have added tests that prove my fix is effective or that my feature works <!--- User-facing changes require a CHANGELOG entry. --> - [ ] I have run `make changelog` and committed the `changelog/pending/<file>` documenting my change <!-- If the change(s) in this PR is a modification of an existing call to the Pulumi Cloud, then the service should honor older versions of the CLI where this change would not exist. You must then bump the API version in /pkg/backend/httpstate/client/api.go, as well as add it to the service. --> - [ ] Yes, there are changes in this PR that warrants bumping the Pulumi Cloud API version <!-- @Pulumi employees: If yes, you must submit corresponding changes in the service repo. -->
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}
if len(s) > 100 {
Enable perfsprint linter (#14813) <!--- Thanks so much for your contribution! If this is your first time contributing, please ensure that you have read the [CONTRIBUTING](https://github.com/pulumi/pulumi/blob/master/CONTRIBUTING.md) documentation. --> # Description <!--- Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. --> Prompted by a comment in another review: https://github.com/pulumi/pulumi/pull/14654#discussion_r1419995945 This lints that we don't use `fmt.Errorf` when `errors.New` will suffice, it also covers a load of other cases where `Sprintf` is sub-optimal. Most of these edits were made by running `perfsprint --fix`. ## Checklist - [x] I have run `make tidy` to update any new dependencies - [x] I have run `make lint` to verify my code passes the lint check - [x] I have formatted my code using `gofumpt` <!--- Please provide details if the checkbox below is to be left unchecked. --> - [ ] I have added tests that prove my fix is effective or that my feature works <!--- User-facing changes require a CHANGELOG entry. --> - [ ] I have run `make changelog` and committed the `changelog/pending/<file>` documenting my change <!-- If the change(s) in this PR is a modification of an existing call to the Pulumi Cloud, then the service should honor older versions of the CLI where this change would not exist. You must then bump the API version in /pkg/backend/httpstate/client/api.go, as well as add it to the service. --> - [ ] Yes, there are changes in this PR that warrants bumping the Pulumi Cloud API version <!-- @Pulumi employees: If yes, you must submit corresponding changes in the service repo. -->
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return StackName{}, errors.New("a stack name cannot exceed 100 characters")
Add tokens.StackName (#14487) <!--- Thanks so much for your contribution! If this is your first time contributing, please ensure that you have read the [CONTRIBUTING](https://github.com/pulumi/pulumi/blob/master/CONTRIBUTING.md) documentation. --> # Description <!--- Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. --> This adds a new type `tokens.StackName` which is a relatively strongly typed container for a stack name. The only weakly typed aspect of it is Go will always allow the "zero" value to be created for a struct, which for a stack name is the empty string which is invalid. To prevent introducing unexpected empty strings when working with stack names the `String()` method will panic for zero initialized stack names. Apart from the zero value, all other instances of `StackName` are via `ParseStackName` which returns a descriptive error if the string is not valid. This PR only updates "pkg/" to use this type. There are a number of places in "sdk/" which could do with this type as well, but there's no harm in doing a staggered roll out, and some parts of "sdk/" are user facing and will probably have to stay on the current `tokens.Name` and `tokens.QName` types. There are two places in the system where we panic on invalid stack names, both in the http backend. This _should_ be fine as we've had long standing validation that stacks created in the service are valid stack names. Just in case people have managed to introduce invalid stack names, there is the `PULUMI_DISABLE_VALIDATION` environment variable which will turn off the validation _and_ panicing for stack names. Users can use that to temporarily disable the validation and continue working, but it should only be seen as a temporary measure. If they have invalid names they should rename them, or if they think they should be valid raise an issue with us to change the validation code. ## Checklist - [x] I have run `make tidy` to update any new dependencies - [x] I have run `make lint` to verify my code passes the lint check - [ ] I have formatted my code using `gofumpt` <!--- Please provide details if the checkbox below is to be left unchecked. --> - [x] I have added tests that prove my fix is effective or that my feature works <!--- User-facing changes require a CHANGELOG entry. --> - [ ] I have run `make changelog` and committed the `changelog/pending/<file>` documenting my change <!-- If the change(s) in this PR is a modification of an existing call to the Pulumi Cloud, then the service should honor older versions of the CLI where this change would not exist. You must then bump the API version in /pkg/backend/httpstate/client/api.go, as well as add it to the service. --> - [ ] Yes, there are changes in this PR that warrants bumping the Pulumi Cloud API version <!-- @Pulumi employees: If yes, you must submit corresponding changes in the service repo. -->
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}
failure := -1
if match := stackNameRegex.FindStringIndex(s); match == nil {
// We have failed to find any match, so the first char must be invalid.
failure = 0
} else if match[1] != len(s) {
// Our match did not extend to the end, so the invalid char must be the
// first char not matched.
failure = match[1]
}
if failure != -1 {
return StackName{}, fmt.Errorf(
"a stack name may only contain alphanumeric, hyphens, underscores, or periods: "+
"invalid character %q at position %d", s[failure], failure)
}
return StackName{s}, nil
}
// MustParseStackName parses a stack name from a string.
func MustParseStackName(s string) StackName {
n, err := ParseStackName(s)
contract.AssertNoErrorf(err, "failed to parse stack name %q", s)
return n
}