外部角色對應功能可讓您將自己的群組或角色對應至角色型存取權控管 (RBAC) 角色和在 Apigee Edge 中建立的群組。這項功能僅適用於 Edge for Private Cloud。
必要條件
- 您必須是具有全域系統管理員憑證的 Apigee Private Cloud 系統管理員，才能執行這項設定。
- 您必須取得 Apigee Edge Private Cloud 安裝的根目錄。預設的根目錄為
/opt。
逐步設定範例
請參閱 Apigee 社群論壇中的 這篇文章，查看設定外部角色對應的逐步範例。
預設設定
根據預設，外部角色對應為停用狀態。
啟用外部角色對應
如何啟用外部角色對應：
- 完成下列設定前，您必須建立實作 ExternalRoleMapperServiceV2 介面的 Java 類別，並將實作項目納入 Management Server 類別路徑：
/opt/apigee/edge-management-server/lib/thirdparty/
如要進一步瞭解此實作，請參閱本文件後述的關於 ExternalRoleMapperImpl 實作範例一節。
- 登入 Apigee Edge 管理伺服器，然後停止管理伺服器程序：
/opt/apigee/apigee-service/bin/apigee-service edge-management-server stop
- 在文字編輯器中開啟
/opt/apigee/customer/application/management-server.properties。如果這個檔案不存在，請建立檔案。 - 請編輯屬性檔案進行下列設定：
# The user store to be used for authentication. # Use "externalized.authentication" for LDAP user store. # Note that for authorization, we continue to use LDAP. # See Enabling external authentication more on enabling external auth. conf_security_authentication.user.store=externalized.authentication #Enable the external authorizations role mapper. conf_security_externalized.authentication.role.mapper.enabled=true conf_security_externalized.authentication.role.mapper.implementation.class=com.customer.authorization.impl.ExternalRoleMapperImpl
- 儲存
management-server.properties檔案。 - 確保
management-server.properties為 Apigee 使用者所有：chown apigee:apigee /opt/apigee/customer/application/management-server.properties
- 啟動管理伺服器：
/opt/apigee/apigee-service/bin/apigee-service edge-management-server start
停用外部授權
如何停用外部授權：
- 在文字編輯器中開啟
/opt/apigee/customer/application/management-server.properties。如果檔案不存在，請建立檔案。 - 將驗證使用者存放區變更為「ldap」：
conf_security_authentication.user.store=ldap
- 將這項屬性設為「false」：
conf_security_externalized.authentication.role.mapper.enabled=false
- 重新啟動管理伺服器：
/opt/apigee/apigee-service/bin/apigee-service edge-management-server start
關於 ExternalRoleMapperImpl 實作範例
在上面的啟用外部角色對應中所述的 security.properties 設定檔，請注意這一行：
externalized.authentication.role.mapper.implementation.class=com.customer.authorization.impl.ExternalRoleMapperImpl
此類別會實作 ExternalRoleMapperServiceV2 介面，且為必要項目。您必須自行建立這個類別的實作方式，以反映各自的群組。完成後，請將已編譯的類別放入 JAR，並將該 JAR 放入管理伺服器的類別路徑：
/opt/apigee/edge-management-server/lib/thirdparty/
您可以隨意命名類別和套件，只要實作 ExternalRoleMapperServiceV2、可在類別路徑中存取，而且在 management-server.properties 設定檔中可正確參照即可。
以下是 ExternalRoleMapperImpl 類別的實作範例：
package com.customer.authorization.impl;
import com.apigee.authentication.*;
import com.apigee.authorization.namespace.OrganizationNamespace;
import com.apigee.authorization.namespace.SystemNamespace;
import java.util.Collection;
import java.util.HashSet;
import javax.naming.NamingEnumeration;
import javax.naming.NamingException;
import javax.naming.directory.Attributes;
import javax.naming.directory.DirContext;
import javax.naming.directory.InitialDirContext;
import javax.naming.directory.SearchControls;
import javax.naming.directory.SearchResult;
/** *
* Sample Implementation constructed with dummy roles with expected namespaces.
*/
public class ExternalRoleMapperImpl
implements ExternalRoleMapperServiceV2 {
InitialDirContext dirContext = null;
@Override
public void start(ConfigBean arg0) throws ConnectionException {
try {
// Customer Specific Implementation will override the
// ImplementDirContextCreationLogicForSysAdmin method implementation.
// Create InitialDirContext based on the system admin user credentials.
dirContext = ImplementDirContextCreationLogicForSysAdmin();
} catch (NamingException e) {
// TODO Auto-generated catch block
throw new ConnectionException(e);
}
}
@Override
public void stop() throws Exception {
}
/**
* This method should be replaced with customer's implementation
* For given roleName under expectedNamespace, return all users that belongs to this role
* @param roleName
* @param expectedNamespace
* @return All users that belongs to this role. For each user, please return the username/email that is stored in Apigee LDAP
* @throws ExternalRoleMappingException
*/
@Override
public Collection<String> getUsersForRole(String roleName, NameSpace expectedNamespace) throws ExternalRoleMappingException {
Collection<String> users = new HashSet<>();
if (expectedNamespace instanceof SystemNamespace) {
// If requesting all users with sysadmin role
if (roleName.equalsIgnoreCase("sysadmin")) {
// Add sysadmin's email to results
users.add("sysadmin@wacapps.net");
}
} else {
String orgName = ((OrganizationNamespace) expectedNamespace).getOrganization();
// If requesting all users of engRole in Apigee LDAP
if (roleName.equalsIgnoreCase("engRole")) {
// Get all users in corresponding groups in customer's LDAP. In this case looking for 'engGroup';
SearchControls controls = new SearchControls();
controls.setSearchScope(1);
try {
NamingEnumeration<SearchResult> res = dirContext.search("ou=groups,dc=corp,dc=wacapps,dc=net",
"cn=engGroup", new Object[]{"",""}, controls);
while (res.hasMoreElements()) {
SearchResult sr = res.nextElement();
// Add all users into return
users.addAll(sr.getAttributes().get("users").getAll());
}
} catch (NamingException e) {
// Customer needs to handle the exception here
}
}
}
return users;
}
/**
*
* This method would be implemented by the customer and would be invoked
* while including using X-Apigee-Current-User header in request.
*
* X-Apigee-Current-User allows the customer to login as another user
*
* Below is the basic example.
*
* If User has sysadmin role then it's expected to set SystemNameSpace
* along with the expected NameSpace. Otherwise role's expectedNameSpace
* to be set for the NameSpacedRole.
*
* Collection<NameSpacedRole> results = new HashSet<NameSpacedRole>();
*
* NameSpacedRole sysNameSpace = new NameSpacedRole("sysadmin",
* SystemNamespace.get());
*
* String orgName =
* ((OrganizationNamespace) expectedNameSpace).getOrganization();
*
* NameSpacedRole orgNameSpace = new NameSpacedRole ("orgadmin",
* expectedNameSpace);
*
* results.add(sysNameSpace);
*
* results.add(orgNameSpace);
*
*
* @param username UserA's username
* @param password UserA's password
* @param requestedUsername UserB's username. Allow UserA to request UserB's userroles with
* UserA's credentials when requesting UserB as X-Apigee-Current-User
* @param expectedNamespace
* @return
* @throws ExternalRoleMappingException
*/
@Override
public Collection<NameSpacedRole> getUserRoles(String username, String password, String requestedUsername, NameSpace expectedNamespace) throws ExternalRoleMappingException {
/************************************************************/
/******************** Authenticate UserA ********************/
/************************************************************/
// Customer Specific Implementation will override the
// ImplementDnameLookupLogic method implementation.
// obtain dnName for given username.
String dnName = ImplementDnNameLookupLogic(username);
// Obtain dnName for given requestedUsername.
String requestedDnName = ImplementDnNameLookupLogic(requestedUsername);
if (dnName == null || requestedDnName == null) {
System.out.println("Error ");
}
DirContext dirContext = null;
try {
// Customer Specific Implementation will override the
// ImplementDirectoryContextCreationLogic method implementation
// Create a directory context with dnName or requestedDnName and password
dirContext = ImplementDirectoryContextCreationLogic();
/************************************************/
/*** Map internal groups to apigee-edge roles ***/
/************************************************/
return apigeeEdgeRoleMapper(dirContext, requestedDnName, expectedNamespace);
} catch (Exception ex) {
ex.printStackTrace();
System.out.println("Error in authenticating User: {}" + new Object[] { username });
} finally {
// Customer implementation to close
// ActiveDirectory/LDAP context.
}
return null;
}
/**
*
* This method would be implemented by the customer and would be invoked
* wihle using username and password for authentication and without the
* X-Apigee-Current-User header
*
* The customer can reuse implementations in
* getUserRoles(String username, String password, String requestedUsername, NameSpace expectedNamespace)
* by
* return getUserRoles(username, password, username, expectedNamespace)
* in implementations.
*
* or the customer can provide new implementations as shown below.
*/
@Override
public Collection<NameSpacedRole> getUserRoles(String username, String password, NameSpace expectedNamespace) throws ExternalRoleMappingException {
/*************************************************************/
/****************** Authenticate Given User ******************/
/*************************************************************/
// Customer Specific Implementation will override the
// ImplementDnameLookupLogic implementation.
// Obtain dnName for given username or email address.
String dnName = ImplementDnNameLookupLogic(username);
if (dnName == null) {
System.out.println("Error ");
}
DirContext dirContext = null;
try {
// Create a directory context with username or dnName and password
dirContext = ImplementDirectoryContextCreationLogic();
/************************************************/
/*** Map internal groups to apigee-edge roles ***/
/************************************************/
return apigeeEdgeRoleMapper(dirContext, dnName, expectedNamespace);
} catch (Exception ex) {
ex.printStackTrace();
System.out.println("Error in authenticating User: {}" + new Object[] { username });
} finally {
// Customer implementation to close
// ActiveDirectory/LDAP context.
}
return null;
}
/**
*
* This method would be implemented by the customer and would be invoked
* while using security token or access token as authentication credentials.
*
*/
@Override
public Collection<NameSpacedRole> getUserRoles(String username, NameSpace expectedNamespace) throws ExternalRoleMappingException {
/*************************************************************/
/****************** Authenticate Given User ******************/
/*************************************************************/
// Customer Specific Implementation will override the
// ImplementDnameLookupLogic implementation.
// Obtain dnName for given username or email address.
String dnName = ImplementDnNameLookupLogic(username);
if (dnName == null) {
System.out.println("Error ");
}
DirContext dirContext = null;
try {
// Create a directory context with username or dnName and password
dirContext = ImplementDirectoryContextCreationLogic();
/************************************************/
/*** Map internal groups to apigee-edge roles ***/
/************************************************/
return apigeeEdgeRoleMapper(dirContext, dnName, expectedNamespace);
} catch (Exception ex) {
ex.printStackTrace();
System.out.println("Error in authenticating User: {}" + new Object[] { username });
} finally {
// Customer implementation to close
// ActiveDirectory/LDAP context.
}
return null;
}
/**
* This method should be replaced with Customer Specific Implementations
*
* Provided as a sample Implementation of mapping user groups to apigee-edge roles
*/
private Collection<NameSpacedRole> apigeeEdgeRoleMapper(DirContext dirContext, String dnName, NameSpace expectedNamespace) throws Exception {
Collection<NameSpacedRole> results = new HashSet<NameSpacedRole>();
/****************************************************/
/************ Fetch internal groups *****************/
/****************************************************/
String groupDN = "OU=Groups,DC=corp,DC=wacapps,DC=net";
String userFilter = "(user=userDnName)";
SearchControls controls = new SearchControls();
controls.setSearchScope(SearchControls.ONELEVEL_SCOPE);
// Looking for all groups the user belongs to in customer's LDAP
NamingEnumeration<SearchResult> groups = dirContext.search(groupDN,userFilter.replace("userDnName", dnName), new Object[] { "", "" }, controls);
if (groups.hasMoreElements()) {
while (groups.hasMoreElements()) {
SearchResult searchResult = groups.nextElement();
Attributes attributes = searchResult.getAttributes();
String groupName = attributes.get("name").get().toString();
/************************************************/
/*** Map internal groups to apigee-edge roles ***/
/************************************************/
if (groupName.equals("BusDev")) {
results.add(new NameSpacedRole("businessAdmin",SystemNamespace.get()));
} else if (groupName.equals("Engineering")) {
if (expectedNamespace instanceof OrganizationNamespace) {
String orgName = ((OrganizationNamespace) expectedNamespace).getOrganization();
results.add(new NameSpacedRole("orgadmin", new OrganizationNamespace(orgName)));
}
} else if (groupName.equals("Marketing")) {
results.add(new NameSpacedRole("marketAdmin",SystemNamespace.get()));
} else {
results.add(new NameSpacedRole("readOnly",SystemNamespace.get()));
}
}
} else {
// In case of no group found or exception found we throw empty roles.
System.out.println(" !!!!! NO GROUPS FOUND !!!!!");
}
return results;
}
/**
* The customer need to replace with own implementations for getting dnName for given user
*/
private String ImplementDnNameLookupLogic(String username) {
// Connect to the customer's own LDAP to fetch user dnName
return customerLDAP.getDnName(username);
}
/**
* The customer need to replace with own implementations for creating DirContext
*/
private DirContext ImplementDirectoryContextCreationLogic() {
// Connect to the customer's own LDAP to create DirContext for given user
return customerLDAP.createLdapContextUsingCredentials();
}
}