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Code Issues Packages Projects Releases Wiki Activity

Handle session storage exceptions.

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Avoid quota exceeded errors.
This commit is contained in:
Przemek Wiech
2020-03-20 18:53:56 +01:00
parent 8b3815550b
commit f8021c0915
1 changed files with 23 additions and 4 deletions
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27
src/wikitree.ts
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@@ -51,6 +51,25 @@ interface Person {
}; };
} }
/** Gets item from session storage. Logs exception if one is thrown. */
function getSessionStorageItem(key: string): string | null {
try {
return sessionStorage.getItem(key);
} catch (e) {
console.warn('Failed to load data from session storage: ' + e);
}
return null;
}
/** Sets item in session storage. Logs exception if one is thrown. */
function setSessionStorageItem(key: string, value: string) {
try {
sessionStorage.setItem(key, value);
} catch (e) {
console.warn('Failed to store data in session storage: ' + e);
}
}
/** Sends a request to the WikiTree API. Returns the parsed response JSON. */ /** Sends a request to the WikiTree API. Returns the parsed response JSON. */
async function wikiTreeGet(request: WikiTreeRequest, handleCors: boolean) { async function wikiTreeGet(request: WikiTreeRequest, handleCors: boolean) {
const requestData = new FormData(); const requestData = new FormData();
@@ -75,7 +94,7 @@ async function wikiTreeGet(request: WikiTreeRequest, handleCors: boolean) {
*/ */
async function getAncestors(key: string, handleCors: boolean) { async function getAncestors(key: string, handleCors: boolean) {
const cacheKey = `wikitree:ancestors:${key}`; const cacheKey = `wikitree:ancestors:${key}`;
const cachedData = sessionStorage.getItem(cacheKey); const cachedData = getSessionStorageItem(cacheKey);
if (cachedData) { if (cachedData) {
return JSON.parse(cachedData); return JSON.parse(cachedData);
} }
@@ -88,7 +107,7 @@ async function getAncestors(key: string, handleCors: boolean) {
handleCors, handleCors,
); );
const result = response[0].ancestors as Person[]; const result = response[0].ancestors as Person[];
sessionStorage.setItem(cacheKey, JSON.stringify(result)); setSessionStorageItem(cacheKey, JSON.stringify(result));
return result; return result;
} }
@@ -100,7 +119,7 @@ async function getRelatives(keys: string[], handleCors: boolean) {
const result: Person[] = []; const result: Person[] = [];
const keysToFetch: string[] = []; const keysToFetch: string[] = [];
keys.forEach((key) => { keys.forEach((key) => {
const cachedData = sessionStorage.getItem(`wikitree:relatives:${key}`); const cachedData = getSessionStorageItem(`wikitree:relatives:${key}`);
if (cachedData) { if (cachedData) {
result.push(JSON.parse(cachedData)); result.push(JSON.parse(cachedData));
} else { } else {
@@ -126,7 +145,7 @@ async function getRelatives(keys: string[], handleCors: boolean) {
(x: {person: Person}) => x.person, (x: {person: Person}) => x.person,
) as Person[]; ) as Person[];
fetchedResults.forEach((person) => { fetchedResults.forEach((person) => {
sessionStorage.setItem( setSessionStorageItem(
`wikitree:relatives:${person.Name}`, `wikitree:relatives:${person.Name}`,
JSON.stringify(person), JSON.stringify(person),
); );