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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 * JsonError is returned, when the body does not contain valid json. This error
* relation to a key, but the data are no foreign ids/fqids. The exception may * is returned on the beginning of a request with http-status-code 400.
* happen, if the stream is used at runtime, because this cannot be detected
* when the caller makes the request.
*/ */
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 * (language dependent) updating all models according to the ModelRequest if new
* data is available. On subscription, initial data must be pushed to the caller * 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 * as soon as possible. The stream can be closed by closing the stream (e.g. the
* underlying network connection). * underlying network connection).
* *
* @throws InvalidFormat * @throws SyntaxError
* @throws ParsingError * @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. * 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 * with all the same fields. This build a tree of dependencies, because the
* value of some fields may be a GenericRelationFieldDescriptor again. * value of some fields may be a GenericRelationFieldDescriptor again.
* *
* For a description of `fields` and `collection`, see GenericRelationFieldDescriptor * For a description of `fields` and `collection`, see
* and RelationFieldDescriptor. * GenericRelationFieldDescriptor and RelationFieldDescriptor.
* *
* `ids`: This is a list of ids for a collection, that should be provided. All * `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 * 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 * If the value is not null, it is indicated, that there is a reference to
* follow. There are three types of values: * follow. There are three types of values:
* - GenericRelationFieldDescriptor: The reference is a generic one. This means, that * - GenericRelationFieldDescriptor: The reference is a generic one. This means,
* the actual value from the model is a fqid or an array of fqids. * 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 * - RelationFieldDescriptor: A collection is given, so it can be expected, that
* actual model value is an id or an array of ids. * the actual model value is an id or an array of ids.
* - StructuredFieldDescriptor: The field is a template field and should be * - StructuredFieldDescriptor: The field is a template field and should be
* handled in this way. * 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`: * `collection`:
* This is the collection, the ids are associated to. The ids are provided with * 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 * This structure holds all data given by the called service as a map of
* fqids. Each fqid contains the (partial, restricted) data for the fqid. * fqfields to the fields values.
*/ */
Interface ModelData { Interface ModelData {
[collection: Collection]: { [fqfield: Fqfield]: Value;
[id: Id]: {
[field: Field]: Value;
};
};
} }