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Fix autoupdate interface

This commit is contained in:
Oskar Hahn 2020-03-21 10:01:05 +01:00 committed by FinnStutzenstein
parent 4f029d336c
commit e076fca655
1 changed files with 41 additions and 25 deletions
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66
docs/interfaces/autoupdate-service.txt
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@ -1,27 +1,46 @@
/**
* This is a chatch-all exception for some invalid parameters
* SyntaxError is returned, when the syntax of the request body is wrong.
* This error is returned on the beginning of a request with http-status-code
* 400.
*/
Exception InvalidFormat(msg: string);
Exception SyntaxError(msg: string);
/**
* This exception is thrown, when parsing model data. E.g. there is an indicated
* relation to a key, but the data are no foreign ids/fqids. The exception may
* happen, if the stream is used at runtime, because this cannot be detected
* when the caller makes the request.
* JsonError is returned, when the body does not contain valid json. This error
* is returned on the beginning of a request with http-status-code 400.
*/
Exception ParsingError(msg: string);
Exception JsonError(msg: string);
/**
* This methods subscribes to the given request. The response is a stream
* ValueError is returned, when the value of a field does not have the expected
* format. E.g. there is an indicated relation to a key, but the data are no
* foreign ids/fqids. The exception may happen, if the stream is used at
* runtime, because this cannot be detected when the caller makes the request.
*/
Exception ValueError(msg: string);
/**
* InternalError is an unexpected error on the server side. When it happens at
* the beginning of a request, an http-status-code 500 is used. But it can also
* happen after the first data have been streamed to the client. The error does
* not contain any useful information. More information can be found in the
* server log. This is the only error that generates a server log message.
*/
Expection InternalError(msg: string);
/**
* This methods subscribes to a list of given request. The response is a stream
* (language dependent) updating all models according to the ModelRequest if new
* data is available. On subscription, initial data must be pushed to the caller
* as soon as possible. The stream can be closed by closing the stream (e.g. the
* underlying network connection).
*
* @throws InvalidFormat
* @throws ParsingError
* @throws SyntaxError
* @throws JsonError
* @throws ValueError
* @throws InternalError
*/
subscribe(request: ModelRequest): stream<ModelData>;
subscribe(request: ModelRequest[]): stream<ModelData>;
/**
* This is the main interface for requesting models in a structured, nested way.
@ -29,8 +48,8 @@ subscribe(request: ModelRequest): stream<ModelData>;
* with all the same fields. This build a tree of dependencies, because the
* value of some fields may be a GenericRelationFieldDescriptor again.
*
* For a description of `fields` and `collection`, see GenericRelationFieldDescriptor
* and RelationFieldDescriptor.
* For a description of `fields` and `collection`, see
* GenericRelationFieldDescriptor and RelationFieldDescriptor.
*
* `ids`: This is a list of ids for a collection, that should be provided. All
* models, that the user can see, must be included in the response. The model
@ -60,10 +79,10 @@ Interface Fields {
*
* If the value is not null, it is indicated, that there is a reference to
* follow. There are three types of values:
* - GenericRelationFieldDescriptor: The reference is a generic one. This means, that
* the actual value from the model is a fqid or an array of fqids.
* - RelationFieldDescriptor: A collection is given, so it can be expected, that the
* actual model value is an id or an array of ids.
* - GenericRelationFieldDescriptor: The reference is a generic one. This means,
* that the actual value from the model is a fqid or an array of fqids.
* - RelationFieldDescriptor: A collection is given, so it can be expected, that
* the actual model value is an id or an array of ids.
* - StructuredFieldDescriptor: The field is a template field and should be
* handled in this way.
*/
@ -72,7 +91,8 @@ Interface GenericRelationFieldDecriptor extends Fields {
}
/**
* For an overview, see `ModelRequest`. For `fields`, see GenericRelationFieldDescriptor.
* For an overview, see `ModelRequest`. For `fields`, see
* GenericRelationFieldDescriptor.
*
* `collection`:
* This is the collection, the ids are associated to. The ids are provided with
@ -117,13 +137,9 @@ Interface StructuredFieldDecriptor {
/**
* This structure holds all data given by the called service structured by
* fqids. Each fqid contains the (partial, restricted) data for the fqid.
* This structure holds all data given by the called service as a map of
* fqfields to the fields values.
*/
Interface ModelData {
[collection: Collection]: {
[id: Id]: {
[field: Field]: Value;
};
};
[fqfield: Fqfield]: Value;
}