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refactor(coap-server): simplify form generation #1084

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Sep 15, 2023
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refactor(coap-server): simplify form generation #1084

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59 changes: 18 additions & 41 deletions packages/binding-coap/src/coap-server.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -171,9 +171,9 @@ export default class CoapServer implements ProtocolServer {
for (const offeredMediaType of offeredMediaTypes) {
const base = this.createThingBase(address, port, urlPath);

this.fillInPropertyBindingData(thing, base, port, offeredMediaType);
this.fillInActionBindingData(thing, base, port, offeredMediaType);
this.fillInEventBindingData(thing, base, port, offeredMediaType);
this.fillInPropertyBindingData(thing, base, offeredMediaType);
this.fillInActionBindingData(thing, base, offeredMediaType);
this.fillInEventBindingData(thing, base, offeredMediaType);
}
}
}
Expand All @@ -182,10 +182,10 @@ export default class CoapServer implements ProtocolServer {
return `${this.scheme}://${address}:${port}/${encodeURIComponent(urlPath)}`;
}

private fillInPropertyBindingData(thing: ExposedThing, base: string, port: number, offeredMediaType: string) {
private fillInPropertyBindingData(thing: ExposedThing, base: string, offeredMediaType: string) {
for (const [propertyName, property] of Object.entries(thing.properties)) {
const opValues = ProtocolHelpers.getPropertyOpValues(property);
const [href, form] = this.createHrefAndForm(
const form = this.createAffordanceForm(
base,
this.PROPERTY_DIR,
propertyName,
Expand All @@ -196,13 +196,13 @@ export default class CoapServer implements ProtocolServer {
);

property.forms.push(form);
this.logHrefAssignment(port, href, "Property", propertyName);
this.logHrefAssignment(form, "Property", propertyName);
}
}

private fillInActionBindingData(thing: ExposedThing, base: string, port: number, offeredMediaType: string) {
private fillInActionBindingData(thing: ExposedThing, base: string, offeredMediaType: string) {
for (const [actionName, action] of Object.entries(thing.actions)) {
const [href, form] = this.createHrefAndForm(
const form = this.createAffordanceForm(
base,
this.ACTION_DIR,
actionName,
Expand All @@ -213,14 +213,13 @@ export default class CoapServer implements ProtocolServer {
);

action.forms.push(form);

this.logHrefAssignment(port, href, "Action", actionName);
this.logHrefAssignment(form, "Action", actionName);
}
}

private fillInEventBindingData(thing: ExposedThing, base: string, port: number, offeredMediaType: string) {
private fillInEventBindingData(thing: ExposedThing, base: string, offeredMediaType: string) {
for (const [eventName, event] of Object.entries(thing.events)) {
const [href, form] = this.createHrefAndForm(
const form = this.createAffordanceForm(
base,
this.EVENT_DIR,
eventName,
Expand All @@ -231,57 +230,35 @@ export default class CoapServer implements ProtocolServer {
);

event.forms.push(form);

this.logHrefAssignment(port, href, "Event", eventName);
this.logHrefAssignment(form, "Event", eventName);
}
}

private createHrefAndForm(
private createAffordanceForm(
base: string,
affordancePathSegment: string,
affordanceName: string,
offeredMediaType: string,
opValues: string | string[],
affordanceUriVariables: PropertyElement["uriVariables"] = {},
thingUriVariables: PropertyElement["uriVariables"] = {}
): [string, TD.Form] {
const href = this.createFormHref(
base,
affordancePathSegment,
affordanceName,
affordanceUriVariables,
thingUriVariables
);
const form = this.createAffordanceForm(href, offeredMediaType, opValues);

return [href, form];
}

private createFormHref(
base: string,
affordancePathSegment: string,
affordanceName: string,
affordanceUriVariables: PropertyElement["uriVariables"] = {},
thingUriVariables: PropertyElement["uriVariables"] = {}
) {
): TD.Form {
const affordanceNamePattern = Helpers.updateInteractionNameWithUriVariablePattern(
affordanceName,
affordanceUriVariables,
thingUriVariables
);

return `${base}/${affordancePathSegment}/${encodeURIComponent(affordanceNamePattern)}`;
}
const href = `${base}/${affordancePathSegment}/${encodeURIComponent(affordanceNamePattern)}`;

private createAffordanceForm(href: string, offeredMediaType: string, op: string[] | string) {
const form = new TD.Form(href, offeredMediaType);
form.op = op;
form.op = opValues;

return form;
}

private logHrefAssignment(port: number, href: string, affordanceType: string, affordanceName: string) {
debug(`CoapServer on port ${port} assigns '${href}' to ${affordanceType} '${affordanceName}'`);
private logHrefAssignment(form: TD.Form, affordanceType: string, affordanceName: string) {
debug(`CoapServer on port ${this.port} assigns '${form.href}' to ${affordanceType} '${affordanceName}'`);
}

private setUpIntroductionMethods(thing: ExposedThing, urlPath: string, port: number) {
Expand Down
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