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Configurable context root for keycloak API #1044

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Configurable context root for keycloak API #1044

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24 changes: 18 additions & 6 deletions scribejava-apis/src/main/java/com/github/scribejava/apis/KeycloakApi.java
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Original file line number Diff line number Diff line change
@@ -1,29 +1,39 @@
package com.github.scribejava.apis;

import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;

import com.github.scribejava.apis.openid.OpenIdJsonTokenExtractor;
import com.github.scribejava.core.builder.api.DefaultApi20;
import com.github.scribejava.core.extractors.TokenExtractor;
import com.github.scribejava.core.model.OAuth2AccessToken;

import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;

public class KeycloakApi extends DefaultApi20 {

private static final ConcurrentMap<String, KeycloakApi> INSTANCES = new ConcurrentHashMap<>();

private final String baseUrlWithRealm;
private final String contextRoot;

protected KeycloakApi(String baseUrlWithRealm) {
this(baseUrlWithRealm, "auth");
}

protected KeycloakApi(String baseUrlWithRealm, String contextRoot) {
this.baseUrlWithRealm = baseUrlWithRealm;
this.contextRoot = contextRoot;
}

public static KeycloakApi instance() {
return instance("http://localhost:8080/", "master");
}

public static KeycloakApi instance(String baseUrl, String realm) {
final String defaultBaseUrlWithRealm = composeBaseUrlWithRealm(baseUrl, realm);
return instance(baseUrl, realm, "auth");
}

public static KeycloakApi instance(String baseUrl, String realm, String contextRoot) {
final String defaultBaseUrlWithRealm = composeBaseUrlWithRealm(baseUrl, realm, contextRoot);

//java8: switch to ConcurrentMap::computeIfAbsent
KeycloakApi api = INSTANCES.get(defaultBaseUrlWithRealm);
Expand All @@ -37,8 +47,10 @@ public static KeycloakApi instance(String baseUrl, String realm) {
return api;
}

protected static String composeBaseUrlWithRealm(String baseUrl, String realm) {
return baseUrl + (baseUrl.endsWith("/") ? "" : "/") + "auth/realms/" + realm;
protected static String composeBaseUrlWithRealm(String baseUrl, String realm, String contextRoot) {
return baseUrl + (baseUrl.endsWith("/") ? "" : "/") +
(contextRoot != null && !contextRoot.isEmpty() ? contextRoot + (contextRoot.endsWith("/") ? "" : "/") : "") +
"realms/" + realm;
}

@Override
Expand Down