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feat: support context file location in repository (#567)
Co-authored-by: Lukasz Gornicki <[email protected]>
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--- | ||
title: 'Context concept' | ||
weight: 50 | ||
--- | ||
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## Overview | ||
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AsyncAPI CLI provides functionality called `context`. It's purpose is to help to work with AsyncAPI CLI in large projects where you do not have just one service exposing AsyncAPI document, but multiple. | ||
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Event driven architecture involves multiple actors, subscribers and publishers. One time you want to validate document **A** and the other time you want to generate models from document **B**. Every time you do it, you need to provide to AsyncAPI CLI the location of the AsyncAPI document, which might be time consuming. You can workaround it with aliases in bash profiles or with other solutions but it is better to use `context` feature, as you can then store it in your repository and share with other team members. | ||
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In short it means that for example instead of writing `asyncapi validate /some/folder/my-asyncapi.yml` you can create a context called `myasync` that will be an alias for and point to `/some/folder/my-asyncapi.yml`. This way next time you use the CLI you can do `asyncapi validate myasync`. | ||
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## Context File location | ||
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You can have a global context for your workstation, and a project specific context. | ||
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If your use case is that you work with multiple repositories, you might want to use a global context. The `.asyncapi-cli` context file is then located in your home directory. You can also store your custom `.asyncapi-cli` file in your project with custom configuration. This way when you run `asyncapi config context add` inside your project, the new context is added to the context file under your project. | ||
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## How to add context to a project | ||
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### Manually | ||
- Create file `.asyncapi-cli` containing [minimal empty context file](#minimalEmptyContextFile) in: | ||
- current directory | ||
- root of current repository | ||
- user's home directory | ||
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### Using CLI's `init` command | ||
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`asyncapi config context init [CONTEXT-FILE-PATH]` | ||
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Where `[CONTEXT-FILE-PATH]` instructs CLI what directory should the file `.asyncapi-cli` containing [minimal empty context file](#minimalEmptyContextFile) be created in: | ||
- current directory: `asyncapi config context init .` (default) | ||
- root of current repository: `asyncapi config context init ./` | ||
- user's home directory: `asyncapi config context init ~` | ||
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(if `[CONTEXT-FILE-PATH]` is omitted, empty context file is created in current directory) | ||
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Make use of newly created `.asyncapi-cli` by executing command: | ||
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`asyncapi config context add [CONTEXT-NAME] [SPEC-FILE-PATH]` | ||
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### Setup example in a real project | ||
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Below you can see an example of context setup for [Event Driven Flight status notification service](https://github.com/amadeus4dev-examples/amadeus-async-flight-status/tree/ff433b6d320a3a6a2499976cbf0782353bc57c16) of the [Amadeus Airline Platform](https://amadeus.com/en/industries/airlines/airline-platform), with multiple microservices and their AsyncAPI documents. | ||
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```bash | ||
# One-time initialization of '.asyncapi-cli' file | ||
(main)$ asyncapi config context init | ||
Initialized context /amadeus-async-flight-status/.asyncapi-cli | ||
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# Adding first context | ||
(main)$ asyncapi config context add subscriber subscriber/asyncapi.yaml | ||
Added context "subscriber". | ||
You can set it as your current context: asyncapi config context use subscriber | ||
You can use this context when needed by passing subscriber as a parameter: asyncapi validate subscriber | ||
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# Adding more contexts | ||
(main)$ asyncapi config context add notifier notifier/asyncapi.yaml | ||
Added context "notifier". | ||
You can set it as your current context: asyncapi config context use notifier | ||
You can use this context when needed by passing notifier as a parameter: asyncapi validate notifier | ||
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(main)$ asyncapi config context add monitor monitor/asyncapi.yaml | ||
Added context "monitor". | ||
You can set it as your current context: asyncapi config context use monitor | ||
You can use this context when needed by passing monitor as a parameter: asyncapi validate monitor | ||
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# Setting monitor as default context | ||
(main)$ asyncapi config context use monitor | ||
monitor is set as current | ||
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# Now you do not even have to remember the context name, and default 'monitor/asyncapi.yaml' will be validated | ||
(main)$ asyncapi validate | ||
File monitor/asyncapi.yaml is valid but has (itself and/or referenced documents) governance issues. | ||
monitor/asyncapi.yaml | ||
1:1 warning asyncapi-defaultContentType AsyncAPI document should have "defaultContentType" field. | ||
1:1 warning asyncapi-id AsyncAPI document should have "id" field. | ||
1:1 warning asyncapi2-tags AsyncAPI object should have non-empty "tags" array. | ||
1:11 information asyncapi-latest-version The latest version of AsyncAPi is not used. It is recommended update to the "2.6.0" version. asyncapi | ||
2:6 warning asyncapi-info-contact Info object should have "contact" object. info | ||
19:15 warning asyncapi2-operation-operationId Operation should have an "operationId" field defined. channels.flight/update.subscribe | ||
26:13 warning asyncapi2-operation-operationId Operation should have an "operationId" field defined. channels.flight/queue.publish | ||
✖ 7 problems (0 errors, 6 warnings, 1 info, 0 hints) | ||
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# You can now use context name when running AsyncAPI commands, no need to remember file location like 'notifier/asyncapi.yaml' | ||
(main)$ asyncapi validate notifier | ||
File notifier/asyncapi.yaml is valid but has (itself and/or referenced documents) governance issues. | ||
notifier/asyncapi.yaml | ||
1:1 warning asyncapi-defaultContentType AsyncAPI document should have "defaultContentType" field. | ||
1:1 warning asyncapi-id AsyncAPI document should have "id" field. | ||
1:1 warning asyncapi2-tags AsyncAPI object should have non-empty "tags" array. | ||
1:11 information asyncapi-latest-version The latest version of AsyncAPi is not used. It is recommended update to the "2.6.0" version. asyncapi | ||
2:6 warning asyncapi-info-contact Info object should have "contact" object. info | ||
18:13 warning asyncapi2-operation-operationId Operation should have an "operationId" field defined. channels.flight/update.publish | ||
✖ 6 problems (0 errors, 5 warnings, 1 info, 0 hints) | ||
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# Switch default context | ||
(main)$ asyncapi config context use notifier | ||
notifier is set as current | ||
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# List all contexts | ||
(main)$ asyncapi config context list | ||
monitor: monitor/asyncapi.yaml | ||
notifier: notifier/asyncapi.yaml | ||
subscriber: subscriber/asyncapi.yaml | ||
``` | ||
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## Context File structure | ||
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### Fixed Fields | ||
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Field Name | Type | Description | ||
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current | `string` | An optional string value representing one of context names, which is used as default in CLI. Default means you can run CLI commands without providing context name, like `asyncapi validate`, and it will run against the default - `current` - context. | ||
store | [Store Object](#storeObject) | **REQUIRED**. Map of filesystem paths to target AsyncAPI documents. | ||
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### <a name="storeObject"></a>Store Object | ||
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Map of filesystem paths to target AsyncAPI documents. | ||
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**Patterned Fields** | ||
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Field Pattern | Type | Description | ||
---|:---:|--- | ||
{contextName} | `string` | An optional string value representing filesystem path to the target AsyncAPI document. | ||
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### <a name="minimalEmptyContextFile"></a>Minimal Empty Context File | ||
Raw JSON: | ||
``` | ||
{ | ||
"store": {} | ||
} | ||
``` | ||
Stringified JSON: | ||
``` | ||
{"store":{}} | ||
``` | ||
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### Context File Example | ||
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Example of a context file for [Event Driven Flight status notification service](https://github.com/amadeus4dev-examples/amadeus-async-flight-status/tree/ff433b6d320a3a6a2499976cbf0782353bc57c16) of the [Amadeus Airline Platform](https://amadeus.com/en/industries/airlines/airline-platform), with multiple microservices and their AsyncAPI documents: | ||
``` | ||
{ | ||
"current": "monitor", | ||
"store": { | ||
"monitor": "monitor/asyncapi.yaml", | ||
"notifier": "notifier/asyncapi.yaml", | ||
"subscriber": "subscriber/asyncapi.yaml" | ||
} | ||
} | ||
``` | ||
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## More context related CLI options | ||
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All commands for managing contexts are available under `asyncapi config context` [CLI commands group](usage#asyncapi-config-context). |
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import {Flags} from '@oclif/core'; | ||
import { Flags } from '@oclif/core'; | ||
import Command from '../../../base'; | ||
import { addContext } from '../../../models/Context'; | ||
import { | ||
MissingContextFileError, | ||
ContextFileWrongFormatError, | ||
} from '../../../errors/context-error'; | ||
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export default class ContextAdd extends Command { | ||
static description='Add or modify a context in the store'; | ||
static description = 'Add a context to the store'; | ||
static flags = { | ||
help: Flags.help({char: 'h'}) | ||
help: Flags.help({ char: 'h' }), | ||
}; | ||
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static args = [ | ||
{name: 'context-name', description: 'context name', required: true}, | ||
{name: 'spec-file-path', description: 'file path of the spec file', required: true} | ||
{ name: 'context-name', description: 'context name', required: true }, | ||
{ | ||
name: 'spec-file-path', | ||
description: 'file path of the spec file', | ||
required: true, | ||
}, | ||
]; | ||
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async run() { | ||
const {args} = await this.parse(ContextAdd); | ||
const { args } = await this.parse(ContextAdd); | ||
const contextName = args['context-name']; | ||
const specFilePath = args['spec-file-path']; | ||
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await addContext(contextName, specFilePath); | ||
this.log(`Added context "${contextName}".\n\nYou can set it as your current context: asyncapi config context use ${contextName}\nYou can use this context when needed by passing ${contextName} as a parameter: asyncapi validate ${contextName}`); | ||
try { | ||
await addContext(contextName, specFilePath); | ||
this.log( | ||
`Added context "${contextName}".\n\nYou can set it as your current context: asyncapi config context use ${contextName}\nYou can use this context when needed by passing ${contextName} as a parameter: asyncapi validate ${contextName}` | ||
); | ||
} catch (e) { | ||
if ( | ||
e instanceof (MissingContextFileError || ContextFileWrongFormatError) | ||
) { | ||
this.log( | ||
'You have no context file configured. Run "asyncapi config context init" to initialize it.' | ||
); | ||
return; | ||
} | ||
{ | ||
throw e; | ||
} | ||
} | ||
} | ||
} |
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import { Flags } from '@oclif/core'; | ||
import Command from '../../../base'; | ||
import { getCurrentContext } from '../../../models/Context'; | ||
import { getCurrentContext, CONTEXT_FILE_PATH } from '../../../models/Context'; | ||
import { | ||
MissingContextFileError, | ||
ContextFileWrongFormatError, | ||
ContextFileEmptyError, | ||
ContextNotFoundError, | ||
} from '../../../errors/context-error'; | ||
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export default class ContextCurrent extends Command { | ||
static description='Shows the current context that is being used'; | ||
static flags={ | ||
help: Flags.help({char: 'h'}) | ||
static description = 'Shows the current context that is being used'; | ||
static flags = { | ||
help: Flags.help({ char: 'h' }), | ||
}; | ||
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async run() { | ||
const { current, context } = await getCurrentContext(); | ||
this.log(`${current}: ${context}`); | ||
let fileContent; | ||
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try { | ||
fileContent = await getCurrentContext(); | ||
} catch (e) { | ||
if ( | ||
e instanceof (MissingContextFileError || ContextFileWrongFormatError) | ||
) { | ||
this.log( | ||
'You have no context file configured. Run "asyncapi config context init" to initialize it.' | ||
); | ||
return; | ||
} else if (e instanceof ContextFileEmptyError) { | ||
this.log(`Context file "${CONTEXT_FILE_PATH}" is empty.`); | ||
return; | ||
} else if ( | ||
e instanceof ContextNotFoundError || | ||
(fileContent && !fileContent.current) | ||
) { | ||
this.log( | ||
'No context is set as current. Run "asyncapi config context" to see all available options.' | ||
); | ||
return; | ||
} | ||
{ | ||
throw e; | ||
} | ||
} | ||
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if (fileContent) { | ||
this.log(`${fileContent.current}: ${fileContent.context}`); | ||
} | ||
} | ||
} |
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import { Flags } from '@oclif/core'; | ||
import Command from '../../../base'; | ||
import { editContext, CONTEXT_FILE_PATH } from '../../../models/Context'; | ||
import { | ||
MissingContextFileError, | ||
ContextFileWrongFormatError, | ||
ContextFileEmptyError, | ||
} from '../../../errors/context-error'; | ||
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export default class ContextEdit extends Command { | ||
static description = 'Edit a context in the store'; | ||
static flags = { | ||
help: Flags.help({ char: 'h' }), | ||
}; | ||
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static args = [ | ||
{ name: 'context-name', description: 'context name', required: true }, | ||
{ | ||
name: 'new-spec-file-path', | ||
description: 'new file path of the spec file', | ||
required: true, | ||
}, | ||
]; | ||
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async run() { | ||
const { args } = await this.parse(ContextEdit); | ||
const contextName = args['context-name']; | ||
const newSpecFilePath = args['new-spec-file-path']; | ||
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try { | ||
await editContext(contextName, newSpecFilePath); | ||
this.log( | ||
`Edited context "${contextName}".\n\nYou can set it as your current context: asyncapi config context use ${contextName}\nYou can use this context when needed by passing ${contextName} as a parameter: asyncapi validate ${contextName}` | ||
); | ||
} catch (e) { | ||
if ( | ||
e instanceof (MissingContextFileError || ContextFileWrongFormatError) | ||
) { | ||
this.log( | ||
'You have no context file configured. Run "asyncapi config context init" to initialize it.' | ||
); | ||
return; | ||
} else if (e instanceof ContextFileEmptyError) { | ||
this.log(`Context file "${CONTEXT_FILE_PATH}" is empty.`); | ||
return; | ||
} | ||
{ | ||
throw e; | ||
} | ||
} | ||
} | ||
} |
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import { Flags } from '@oclif/core'; | ||
import Command from '../../../base'; | ||
import { initContext } from '../../../models/Context'; | ||
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export default class ContextInit extends Command { | ||
static description = 'Initialize context'; | ||
static flags = { | ||
help: Flags.help({ char: 'h' }), | ||
}; | ||
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static contextFilePathMessage = `Specify directory in which context file should be created: | ||
- current directory : asyncapi config context init . (default) | ||
- root of current repository : asyncapi config context init ./ | ||
- user's home directory : asyncapi config context init ~`; | ||
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static args = [ | ||
{ | ||
name: 'context-file-path', | ||
description: `${ContextInit.contextFilePathMessage}`, | ||
required: false, | ||
}, | ||
]; | ||
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async run() { | ||
const { args } = await this.parse(ContextInit); | ||
const contextFilePath = args['context-file-path']; | ||
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const contextWritePath = await initContext(contextFilePath); | ||
this.log(`Initialized context ${contextWritePath}`); | ||
} | ||
} |
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