/** Gets a token from the cache if possible. */
public String get(Account account, String tokenType, String packageName, byte[] sigDigest) {
Key k = new Key(account, tokenType, packageName, sigDigest);
Value v = mCachedTokens.get(k);
long currentTime = System.currentTimeMillis();
if (v != null && currentTime < v.expiryEpochMillis) {
return v.token;
} else if (v != null) {
remove(account.type, v.token);
}
return null;
}
/**
* Caches the specified token until the specified expiryMillis. The token will be associated with
* the given token type, package name, and digest of signatures.
*
* @param token
* @param tokenType
* @param packageName
* @param sigDigest
* @param expiryMillis
*/
public void put(
Account account,
String token,
String tokenType,
String packageName,
byte[] sigDigest,
long expiryMillis) {
Preconditions.checkNotNull(account);
if (token == null || System.currentTimeMillis() > expiryMillis) {
return;
}
Key k = new Key(account, tokenType, packageName, sigDigest);
Value v = new Value(token, expiryMillis);
mCachedTokens.putToken(k, v);
}
public void remove(Account account) {
mCachedTokens.evict(account);
}
/**
* Evicts the specified token from the cache. This should be called as part of a token
* invalidation workflow.
*/
public void remove(String accountType, String token) {
mCachedTokens.evict(accountType, token);
}
