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refactor: pull pubsub DAL/SQL out of controller (#2798)
This introduces quite a lot of constructor boilerplate in a lot of places which I hope will become cleaner as more and more of the subsystems are decoupled. --------- Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,85 @@ | ||
| package async | ||
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| import ( | ||
| "fmt" | ||
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| "github.com/alecthomas/participle/v2" | ||
| "github.com/alecthomas/participle/v2/lexer" | ||
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| "github.com/TBD54566975/ftl/backend/schema" | ||
| "github.com/TBD54566975/ftl/internal/model" | ||
| ) | ||
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| type asyncOriginParseRoot struct { | ||
| Key AsyncOrigin `parser:"@@"` | ||
| } | ||
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| var asyncOriginLexer = lexer.MustSimple([]lexer.SimpleRule{ | ||
| {"NumberIdent", `[0-9][a-zA-Z0-9_-]*`}, | ||
| {"Ident", `[a-zA-Z_][a-zA-Z0-9_-]*`}, | ||
| {"Punct", `[:.]`}, | ||
| }) | ||
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| var asyncOriginParser = participle.MustBuild[asyncOriginParseRoot]( | ||
| participle.Union[AsyncOrigin](AsyncOriginCron{}, AsyncOriginFSM{}, AsyncOriginPubSub{}), | ||
| participle.Lexer(asyncOriginLexer), | ||
| ) | ||
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| // AsyncOrigin is a sum type representing the originator of an async call. | ||
| // | ||
| // This is used to determine how to handle the result of the async call. | ||
| type AsyncOrigin interface { | ||
| asyncOrigin() | ||
| // Origin returns the origin type. | ||
| Origin() string | ||
| String() string | ||
| } | ||
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| // AsyncOriginCron represents the context for the originator of a cron async call. | ||
| // | ||
| // It is in the form cron:<module>.<verb> | ||
| type AsyncOriginCron struct { | ||
| CronJobKey model.CronJobKey `parser:"'cron' ':' @(~EOF)+"` | ||
| } | ||
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| var _ AsyncOrigin = AsyncOriginCron{} | ||
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| func (AsyncOriginCron) asyncOrigin() {} | ||
| func (a AsyncOriginCron) Origin() string { return "cron" } | ||
| func (a AsyncOriginCron) String() string { return fmt.Sprintf("cron:%s", a.CronJobKey) } | ||
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| // AsyncOriginFSM represents the context for the originator of an FSM async call. | ||
| // | ||
| // It is in the form fsm:<module>.<name>:<key> | ||
| type AsyncOriginFSM struct { | ||
| FSM schema.RefKey `parser:"'fsm' ':' @@"` | ||
| Key string `parser:"':' @(~EOF)+"` | ||
| } | ||
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| var _ AsyncOrigin = AsyncOriginFSM{} | ||
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| func (AsyncOriginFSM) asyncOrigin() {} | ||
| func (a AsyncOriginFSM) Origin() string { return "fsm" } | ||
| func (a AsyncOriginFSM) String() string { return fmt.Sprintf("fsm:%s:%s", a.FSM, a.Key) } | ||
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| // AsyncOriginPubSub represents the context for the originator of an PubSub async call. | ||
| // | ||
| // It is in the form fsm:<module>.<subscription_name> | ||
| type AsyncOriginPubSub struct { | ||
| Subscription schema.RefKey `parser:"'sub' ':' @@"` | ||
| } | ||
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| var _ AsyncOrigin = AsyncOriginPubSub{} | ||
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| func (AsyncOriginPubSub) asyncOrigin() {} | ||
| func (a AsyncOriginPubSub) Origin() string { return "sub" } | ||
| func (a AsyncOriginPubSub) String() string { return fmt.Sprintf("sub:%s", a.Subscription) } | ||
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| // ParseAsyncOrigin parses an async origin key. | ||
| func ParseAsyncOrigin(origin string) (AsyncOrigin, error) { | ||
| root, err := asyncOriginParser.ParseString("", origin) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to parse async origin: %w", err) | ||
| } | ||
| return root.Key, nil | ||
| } |
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