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Removing, deprecating and replacing usage of black/whitelist (#29254)

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Johan Andrén 2020-06-18 15:48:28 +02:00 • committed by GitHub
parent 25ea7b7f5e
commit 1e9e984727
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23 changed files with 168 additions and 144 deletions
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27
akka-docs/src/test/java/jdocs/stream/operators/flow/StatefulMapConcat.java
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@ -43,40 +43,39 @@ public class StatefulMapConcat {
// #zip-with-index
}
static void blacklist() {
// #blacklist
Source<String, NotUsed> fruitsAndBlacklistCommands =
static void denylist() {
// #denylist
Source<String, NotUsed> fruitsAndDenyCommands =
Source.from(
Arrays.asList(
"banana", "pear", "orange", "blacklist:banana", "banana", "pear", "banana"));
Arrays.asList("banana", "pear", "orange", "deny:banana", "banana", "pear", "banana"));
Flow<String, String, NotUsed> blacklistingFlow =
Flow<String, String, NotUsed> denyFilterFlow =
Flow.of(String.class)
.statefulMapConcat(
() -> {
Set<String> blacklist = new HashSet<>();
Set<String> denyList = new HashSet<>();
return (element) -> {
if (element.startsWith("blacklist:")) {
blacklist.add(element.substring(10));
if (element.startsWith("deny:")) {
denyList.add(element.substring(10));
return Collections
.emptyList(); // no element downstream when adding a blacklisted keyword
} else if (blacklist.contains(element)) {
.emptyList(); // no element downstream when adding a deny listed keyword
} else if (denyList.contains(element)) {
return Collections
.emptyList(); // no element downstream if element is blacklisted
.emptyList(); // no element downstream if element is deny listed
} else {
return Collections.singletonList(element);
}
};
});
fruitsAndBlacklistCommands.via(blacklistingFlow).runForeach(System.out::println, system);
fruitsAndDenyCommands.via(denyFilterFlow).runForeach(System.out::println, system);
// prints
// banana
// pear
// orange
// pear
// #blacklist
// #denylist
}
static void reactOnEnd() {