我们正在评估Shiro框架，以用于我们正在构建的定制SaaS应用程序。它似乎是一个很棒的框架，可以直接实现我们90%的需求。我的Shiro理解还比较基础，以下是我试图完成的内容。
- 我们有多个客户，每个客户都有相同的数据库。
- 所有授权（角色/权限）将由客户在他们自己的专用数据库中进行配置。
- 每个客户都将有一个唯一的虚拟主机，例如：client1.mycompany.com、client2.mycompany.com等。
场景1：
Authentication done via LDAP (MS Active Directory)
Create unique users in LDAP, make app aware of LDAP users, and have client admins provision them into whatever roles..
Scenario 2
Authentication also done via JDBC Relam in their database
问题:
适用于Sc 1和2 我应该如何告诉Shiro使用哪个数据库？我意识到这必须通过某种自定义的身份验证过滤器完成，但是有人可以指导我最合理的方法吗？计划使用虚拟主机URL来告诉Shiro和mybatis使用哪个数据库。
我需要为每个客户端创建一个领域吗？
Sc 1（由于LDAP，用户名在客户端之间是唯一的）如果用户jdoe由client1和client2共享，并且他通过client1进行认证并尝试访问client2的资源，Shiro是否允许或要求他再次登录？
Sc 2（用户名仅在数据库中唯一）如果客户端1和客户端2都创建名为jdoe的用户，则Shiro能够区分客户端1中的jdoe和客户端2中的jdoe吗？
基于Les的输入，我的解决方案..
public class MultiTenantAuthenticator extends ModularRealmAuthenticator {
@Override
protected AuthenticationInfo doAuthenticate(AuthenticationToken authenticationToken) throws AuthenticationException {
assertRealmsConfigured();
TenantAuthenticationToken tat = null;
Realm tenantRealm = null;
if (!(authenticationToken instanceof TenantAuthenticationToken)) {
throw new AuthenticationException("Unrecognized token , not a typeof TenantAuthenticationToken ");
} else {
tat = (TenantAuthenticationToken) authenticationToken;
tenantRealm = lookupRealm(tat.getTenantId());
}
return doSingleRealmAuthentication(tenantRealm, tat);
}
protected Realm lookupRealm(String clientId) throws AuthenticationException {
Collection<Realm> realms = getRealms();
for (Realm realm : realms) {
if (realm.getName().equalsIgnoreCase(clientId)) {
return realm;
}
}
throw new AuthenticationException("No realm configured for Client " + clientId);
}
}
新型令牌...
public final class TenantAuthenticationToken extends UsernamePasswordToken {
public enum TENANT_LIST {
CLIENT1, CLIENT2, CLIENT3
}
private String tenantId = null;
public TenantAuthenticationToken(final String username, final char[] password, String tenantId) {
setUsername(username);
setPassword(password);
setTenantId(tenantId);
}
public TenantAuthenticationToken(final String username, final String password, String tenantId) {
setUsername(username);
setPassword(password != null ? password.toCharArray() : null);
setTenantId(tenantId);
}
public String getTenantId() {
return tenantId;
}
public void setTenantId(String tenantId) {
try {
TENANT_LIST.valueOf(tenantId);
} catch (IllegalArgumentException ae) {
throw new UnknownTenantException("Tenant " + tenantId + " is not configured " + ae.getMessage());
}
this.tenantId = tenantId;
}
}
修改我的继承JDBC Realm
public class TenantSaltedJdbcRealm extends JdbcRealm {
public TenantSaltedJdbcRealm() {
// Cant seem to set this via beanutils/shiro.ini
this.saltStyle = SaltStyle.COLUMN;
}
@Override
public boolean supports(AuthenticationToken token) {
return super.supports(token) && (token instanceof TenantAuthenticationToken);
}
最后，在登录时使用新的令牌
// This value is set via an Intercepting Servlet Filter
String client = (String)request.getAttribute("TENANT_ID");
if (!currentUser.isAuthenticated()) {
TenantAuthenticationToken token = new TenantAuthenticationToken(user,pwd,client);
token.setRememberMe(true);
try {
currentUser.login(token);
} catch (UnknownAccountException uae) {
log.info("There is no user with username of " + token.getPrincipal());
} catch (IncorrectCredentialsException ice) {
log.info("Password for account " + token.getPrincipal() + " was incorrect!");
} catch (LockedAccountException lae) {
log.info("The account for username " + token.getPrincipal() + " is locked. "
+ "Please contact your administrator to unlock it.");
} // ... catch more exceptions here (maybe custom ones specific to your application?
catch (AuthenticationException ae) {
//unexpected condition? error?
ae.printStackTrace();
}
}
}