== Migration Changes

=== Migrating to 6.0.0

==== Upgrade to Wildfly 16

The {project_name} server was upgraded to use Wildfly 16 as the underlying container. This does not directly involve any
specific {project_name} server functionality, but there are few changes related to the migration, which worth mentioning.

Dependency updates::
  The dependencies were updated to the versions used by Wildfly 16 server. For example, Infinispan is now 9.4.8.Final.

Configuration changes::
  There are few configuration changes in the `standalone(-ha).xml` and `domain.xml` files. You should follow the <<_install_new_version>>
  section to handle the migration of configuration files automatically.

Cross-Datacenter Replication changes::
  * You will need to upgrade {jdgserver_name} server to version {jdgserver_version}. The older version may still work, but it is
  not guaranteed as we don't test it anymore.

==== New optional client scope
We have added a new `microprofile-jwt` optional client scope to handle the claims defined in the https://wiki.eclipse.org/MicroProfile/JWT_Auth[MicroProfile/JWT Auth Specification].
This new client scope defines protocol mappers to set the username of the authenticated user to the `upn` claim and to
set the realm roles to the `groups` claim.


=== Migrating to 5.0.0

==== Upgrade to Wildfly 15

The {project_name} server was upgraded to use Wildfly 15 as the underlying container. This does not directly involve any
specific {project_name} server functionality, but there are few changes related to the migration, which worth mentioning.

Dependency updates::
  The dependencies were updated to the versions used by Wildfly 15 server. For example, Infinispan is now 9.4.3.Final.

Configuration changes::
  There are few configuration changes in the `standalone(-ha).xml` and `domain.xml` files. You should follow the <<_install_new_version>>
  section to handle the migration of configuration files automatically.

Cross-Datacenter Replication changes::
  * You will need to upgrade {jdgserver_name} server to version {jdgserver_version}. The older version may still work, but it is
  not guaranteed as we don't test it anymore.

=== Migrating to 4.8.2

==== Google Identity Provider updated to use Google Sign-in authentication system

The Google Identity Provider implementation in {project_name} up to version 4.8.1 relies on the Google+ API endpoints
endpoints for authorization and obtaining the user profile. From March 2019 onwards, Google is removing support
for the Google+ API in favor of the new Google Sign-in authentication system. The {project_name} identity provider has been updated
to use the new endpoints so if this integration is in use make sure you upgrade to {project_name} version 4.8.2 or later.

If you run into an error saying that the application identifier was not found in the directory, you will have to register the client application again in the
https://console.developers.google.com/apis/credentials[Google API Console] portal to obtain a new application id and secret.

It is possible that you will need to adjust custom mappers for non-standard claims that were provided by Google+ user
information endpoint and are provided under different name by Google Sign-in API. Please consult Google documentation
for the most up-to-date information on available claims.

==== LinkedIn Social Broker Updated to Version 2 of LinkedIn APIs

Accordingly with LinkedIn, all developers need to migrate to version 2.0 of their APIs and OAuth 2.0. As such, we have updated
our LinkedIn Social Broker.

Existing deployments using this broker may start experiencing errors when fetching user's profile using version 2 of
LinkedIn APIs. This error may be related with the lack of permissions granted to the client application used to configure the broker
which may not be authorized to access the Profile API or request specific OAuth2 scopes during the authentication process.

Even for newly created LinkedIn client applications, you need to make sure that the client is able to request the `r_liteprofile` and
`r_emailaddress` OAuth2 scopes, at least, as well that the client application can fetch current member's profile from the `https://api.linkedin.com/v2/me` endpoint.

Due to these privacy restrictions imposed by LinkedIn in regards to access to member's information and the limited set of claims returned by the
current member's Profile API, the LinkedIn Social Broker
is now using the member's email address as the default username. That means that the `r_emailaddress` is always set when
sending authorization requests during the authentication.

=== Migrating to 4.6.0

==== New default client scopes

We have added new realm default client scopes `roles` and `web-origins`. These client scopes contain protocol
mappers to add the roles of the user and allowed web origins to the token. During migration, these client scopes should be
automatically added to all the OpenID Connect clients as default client scopes. Hence no setup should be required after database
migration is finished.

===== Protocol mapper SPI addition
Related to this, there is a small addition in the (unsupported) Protocol Mappers SPI. You can be affected only if you
implemented a custom ProtocolMapper. There is a new `getPriority()` method on the ProtocolMapper interface. The method has the
default implementation set to return 0. If your protocol mapper implementation relies on the roles in the access token `realmAccess`
or `resourceAccess` properties, you may need to increase the priority of your mapper.

===== Audience resolving

Audiences of all the clients, for which authenticated user has at least one client role in the token, are automatically added
to the `aud` claim in the access token now. On the other hand, an access token may not automatically contain the audience of the
frontend client, for which it was issued. Read the link:{adminguide_link}#_audience[{adminguide_name}] for more details.

==== JavaScipt Adapter Promise

To use native JavaScript promise with the JavaScript adapter it is now required to set `promiseType` to `native` in the
init options.

In the past if native promise was available a wrapper was returned that provided both the legacy Keycloak promise and
the native promise. This was causing issues as the error handler was not always set prior to the native error event, which
resulted in `Uncaught (in promise)` error.

==== Microsoft Identity Provider updated to use the Microsoft Graph API

The Microsoft Identity Provider implementation in {project_name} up to version 4.5.0 relies on the Live SDK
endpoints for authorization and obtaining the user profile. From November 2018 onwards, Microsoft is removing support
for the Live SDK API in favor of the new Microsoft Graph API. The {project_name} identity provider has been updated
to use the new endpoints so if this integration is in use make sure you upgrade to {project_name} version 4.6.0 or later.

Legacy client applications registered under "Live SDK applications" won't work with the Microsoft Graph endpoints
due to changes in the id format of the applications. If you run into an error saying that the application identifier
was not found in the directory, you will have to register the client application again in the
https://account.live.com/developers/applications/create[Microsoft Application Registration] portal to obtain a new application id.

==== Upgrade to Wildfly 14

The {project_name} server was upgraded to use Wildfly 14 as the underlying container. This does not directly involve any
specific {project_name} server functionality, but there are few changes related to the migration, which worth mentioning.

Dependency updates::
  The dependencies were updated to the versions used by Wildfly 14 server. For example, Infinispan is now 9.3.1.Final.

Configuration changes::
  There are few configuration changes in the `standalone(-ha).xml` and `domain.xml` files. You should follow the <<_install_new_version>>
  section to handle the migration of configuration files automatically.

Cross-Datacenter Replication changes::
  * You will need to upgrade {jdgserver_name} server to version {jdgserver_version}. The older version may still work, but it is
  not guaranteed as we don't test it anymore.
ifeval::[{project_product}==true]
  * There is a need to add `protocolVersion` property with the value `2.6` to the configuration of the `remote-store` element in the
  {project_name} configuration. This is required as there is a need to downgrade the version of HotRod protocol to be compatible
  with the version used by {jdgserver_name} {jdgserver_version}.
endif::[]

=== Migrating to 4.4.0

==== Upgrade to Wildfly 13

The {project_name} server was upgraded to use Wildfly 13 as the underlying container. This does not directly involve any
specific {project_name} server functionality, but there are few changes related to the migration, which worth mentioning.

Dependency updates::
  The dependencies were updated to the versions used by Wildfly 13 server. For example, Infinispan is now 9.2.4.Final and Undertow is 2.0.9.Final

Configuration changes::
  There are few configuration changes in the `standalone(-ha).xml` and `domain.xml` files. You should follow the <<_install_new_version>>
  section to handle the migration of configuration files automatically. If more detail is needed, because, for example, you did some configuration
  changes on your own, here is a list of the most important changes:
  * Element `eviction` on infinispan caches is now deprecated (unused) and was replaced by element `object-memory`
  * There is no `jndi-attribute` on `cache-container` element in infinispan subsystem.

Cross-Datacenter Replication changes::
  * You will need to upgrade {jdgserver_name} server to version {jdgserver_version}. The older version may still work, but it is
  not guaranteed as we don't test it anymore.
  * You don't need to configure security anymore in the {jdgserver_name} server configuration file.
ifeval::[{project_community}==true]
  * There is a need to remove `transaction` element from the configuration of replicated caches in the {jdgserver_name} server
  configuration file. This is needed because of the infinispan bug https://issues.jboss.org/browse/ISPN-9323.
endif::[]

=== Migration to 4.3.0

==== Hostname configuration

In previous versions it was recommended to use a filter to specify permitted hostnames. It is now possible to
set a fixed hostname which makes it easier to make sure the valid hostname is used and also allows internal
applications to invoke {project_name} through an alternative URL, for example an internal IP address. It is
recommended that you switch to this approach in production.

=== Migrating to 4.0.0

==== Client Templates changed to Client Scopes

We added support for Client Scopes, which requires some attention during migration.

Client Templates changed to Client Scopes::
  Client Templates were changed to Client Scopes. If you had any Client Templates, their protocol mappers and role scope mappings
  will be preserved.

Spaces replaced in the names::
  Client templates with the space character in the name were renamed by replacing spaces with an underscore, because spaces are
  not allowed in the name of client scopes. For example, a client template `my template` will be changed to client scope `my_template`.

Linking Client Scopes to Clients::
  For clients which had the client template, the corresponding client scope
  is now added as `Default Client Scope` to the client. So protocol mappers and role scope mappings will be preserved on the client.

Realm Default Client Scopes not linked with existing clients::
  During the migration, the list of built-in client scopes is added to each realm as well as list of `Realm Default Client Scopes`. However,
  existing clients are NOT upgraded and new client scopes are NOT automatically added to them. Also all the protocol mappers and role
  scope mappings are kept on existing clients. In the new version, when you create a new client, it automatically has Realm Default Client Scopes
  attached to it and it does not have any protocol mappers attached to it. We did not change existing clients during migration as it
  would be impossible to properly detect customizations, which you will have for protocol mappers of the clients, for example. If you want to
  update existing clients (remove protocol mappers from them and link them with client scopes), you will need to do it manually.

Consents need to be confirmed again::
  The client scopes change required the refactoring of consents. Consents now point to client scopes, not to roles or protocol mappers.
  Because of this change, the previously confirmed persistent consents by users are not valid anymore and users need to confirm
  the consent page again after the migration.

Some configuration switches removed::
  The switch `Scope Param Required` was removed from Role Detail. The switches `Consent Required` and `Consent Text` were removed
  from the Protocol Mapper details. Those switches were replaced by the Client Scope feature.

==== Changes to Authorization Services

We added support for UMA 2.0. This version of the UMA specification introduced some important changes on how permissions are obtained from the server.

Here are the main changes introduced by UMA 2.0 support. See link:{authorizationguide_link}[{authorizationguide_name}] for details.

Authorization API was removed::
  Prior to UMA 2.0 (UMA 1.0), client applications were using the Authorization API to obtain permissions from the server in the format of a RPT. The new version
  of UMA specification has removed the Authorization API which was also removed from {project_name}. In UMA 2.0, RPTs can now be obtained from the token endpoint by using a specific grant type.
  See link:{authorizationguide_link}#_service_obtaining_permissions[{authorizationguide_name}] for details.

Entitlement API was removed::
  With the introduction of UMA 2.0, we decided to leverage the token endpoint and UMA grant type to allow obtaining RPTs from {project_name} and
  avoid having different APIs. The functionality provided by the Entitlement API was kept the same and is still possible to obtain permissions for a set
  of one or more resources and scopes or all permissions from the server in case no resource or scope is provided.
  See link:{authorizationguide_link}#_service_obtaining_permissions[{authorizationguide_name}] for details.

Changes to UMA Discovery Endpoint::
  UMA Discovery document changed, see link:{authorizationguide_link}#_service_authorization_api[{authorizationguide_name}] for details.

Changes to {project_name} Authorization JavaScript Adapter::
  The {project_name} Authorization JavaScript Adapter (keycloak-authz.js) changed in order to comply with the changes introduced by UMA 2.0 while keeping
  the same behavior as before. The main change is on how you invoke both `authorization` and `entitlement` methods which now
  expect a specific object type representing an authorization request. This new object type provides more flexibility on how
  permissions can be obtained from the server by supporting the different parameters supported by the UMA grant type.
  See link:{authorizationguide_link}#_enforcer_js_adapter[{authorizationguide_name}] for details.

  One of the main changes introduced by this release is that you are no longer required to exchange access tokens with RPTs in
  order to access resources protected by a resource server (when not using UMA). Depending on how the policy enforcer is configured on the resource server side, you can just send regular
  access tokens as a bearer token and permissions will still be enforced.

Changes to {project_name} Authorization Client Java API::
  When upgrading to the new version of {project_name} Authorization Client Java API, you'll notice that some representation classes
  were moved to a different package in `org.keycloak:keycloak-core`.

=== Migrating to 3.4.2

==== Added session_state parameter to OpenID Connect Authentication Response

The OpenID Connect Session Management specification requires that the parameter `session_state` is present in the OpenID Connect Authentication Response.

In past releases, we did not have this parameter, but now {project_name} adds this parameter by default, as required by the specification.

However, some OpenID Connect / OAuth2 adapters, and especially older {project_name} adapters, may have issues with this new parameter.

For example, the parameter will be always present in the browser URL after successful authentication to the client application.
In these cases, it may be useful to disable adding the `session_state` parameter to the authentication response. This can be done
for the particular client in the {project_name} admin console, in client details in the section with `OpenID Connect Compatibility Modes`,
described in <<_compatibility_with_older_adapters>>. There is the `Exclude Session State From Authentication Response` switch,
which can be turned on to prevent adding the `session_state` parameter to the Authentication Response.

NOTE: The parameter `session_state` was added in 3.4.2, however the switch `Exclude Session State From Authentication Response` was added
in 4.0.0.Beta1. If your {project_name} server is on 3.4.2 or 3.4.3 and you have issues with `session_state` parameter, you will need
to upgrade the server to 4.0.0.Beta1 or newer.


=== Migrating to 3.2.0

==== New Password Hashing algorithms

We've added two new password hashing algorithms (pbkdf2-sha256 and pbkdf2-sha512). New realms will use the pbkdf2-sha256
hashing algorithm with 27500 hashing iterations. Since pbkdf2-sha256 is slightly faster than pbkdf2 the iterations was
increased to 27500 from 20000.

Existing realms are upgraded if the password policy contains the default value for hashing algorithm (not specified) and
iteration (20000). If you have changed the hashing iterations you need to manually change to pbkdf2-sha256 if you'd like
to use the more secure hashing algorithm.

==== ID Token requires scope=openid

OpenID Connect specification requires that parameter `scope` with value `openid` is used in initial authorization request. So in {project_name}
2.1.0 we changed our adapters to use `scope=openid` in the redirect URI to {project_name}. Now we changed the server part too and ID token
will be sent to the application just if `scope=openid` is really used. If it's not used, then ID token will be skipped and just Access token and Refresh token will be sent to the application.
This also allows that you can ommit the generation of ID Token on purpose - for example for space or performance purposes.

Direct grants (OAuth2 Resource Owner Password Credentials Grant) and Service accounts login (OAuth2 Client credentials grant) also don't use ID Token by default now.
You need to explicitly add `scope=openid` parameter to have ID Token included.

==== Authentication sessions and Action tokens

We are working on support for multiple datacenters. As the initial step, we introduced authentication session and action tokens.
Authentication session replaces Client session, which was used in previous versions. Action tokens are currently used especially for the scenarios, where
the authenticator or requiredActionProvider requires sending email to the user and requires user to click on the link in email.

Here are concrete changes related to this, which may affect you for the migration.

First change related to this is introducing new Infinispan caches `authenticationSessions` and `actionTokens` in `standalone.xml` or `standalone-ha.xml`. If you use our migration CLI, you
don't need to care much as your `standalone(-ha).xml` files will be migrated automatically.

Second change is changing of some signatures in methods of authentication SPI. This may affect you if you use custom `Authenticator` or
`RequiredActionProvider`. Classes `AuthenticationFlowContext` and `RequiredActionContext` now allow to retrieve authentication session
instead of client session.

We also added some initial support for sticky sessions. You may want to change your loadbalancer/proxy server and configure it if you don't want to suffer from it and want to have better performance.
The route is added to the new `AUTH_SESSION_ID` cookie. More info in the clustering documentation.

Another change is, that `token.getClientSession()` was removed. This may affect you for example if you're using Client Initiated Identity Broker Linking feature.

The `ScriptBasedAuthenticator` changed the binding name from `clientSession` to `authenticationSession`, so you would need to update your scripts if you're using this authenticator.

Finally we added some new timeouts to the admin console. This allows you for example to specify different timeouts for the email actions triggered by admin and by user himself.

=== Migrating to 2.5.1

==== Migration of old offline tokens

If you migrate from version 2.2.0 or older and you used offline tokens, then your offline tokens didn't have KID in the token header.
We added KID to the token header in 2.3.0 together with the ability to have multiple realm keys, so {project_name} is able to find the correct key based on the token KID.

For the offline tokens without KID, {project_name} 2.5.1 will always use the active realm key to find the proper key for the token verification. In other words, migration of old
offline tokens will work. So for example, your user requested offline token in 1.9.8, then you migrate from 1.9.8 to 2.5.1 and then your user will be
still able to refresh his old offline token in 2.5.1 version.

But there is limitation, that once you change the realm active key, the users won't be able to refresh old offline tokens
anymore. So you shouldn't change the active realm key until all your users with offline tokens refreshed their tokens. Obviously newly
refreshed tokens will have KID in the header, so after all users exchange their old offline tokens, you are free to change the active realm key.

=== Migrating to 2.5.0

==== Changes to the Infinispan caches

The `realms` cache defined in the infinispan subsystem in `standalone.xml` or `standalone-ha.xml` configuration file, now has the eviction with the 10000 records by default.
This is the same default like the `users` cache.

Also the `authorization` cache now doesn't have any eviction on it by default.


=== Migrating to 2.4.0

==== Server SPI split into Server SPI and Sever SPI Private

The keycloak-server-spi module has been split into keycloak-server-spi and keycloak-server-spi-private. APIs within
keycloak-server-spi will not change between minor releases, while we reserve the right and may quite likely change
APIs in keycloak-server-spi-private between minor releases.

==== Key encryption algorithm in SAML assertions

Key in SAML assertions and documents are now encrypted using RSA-OAEP encryption scheme.
If you want to use encrypted assertions, make sure that service providers understand this encryption scheme.
In the unlikely case that SP would not be able to handle the new scheme, {project_name}
can be made to use legacy RSA-v1.5 encryption scheme when started with system property
`keycloak.saml.key_trans.rsa_v1.5` set to `true`.

==== Infinispan caches realms and users are always local

Even if you use {project_name} in cluster, the caches `realms` and `users` defined in infinispan subsystem in `standalone-ha.xml` are
always local caches now. There is separate cache `work`, which handles sending invalidation messages between cluster nodes and informing whole cluster
what records in underlying `realms` and `users` caches should be invalidated.

=== Migrating to 2.3.0

==== Default max results on paginated endpoints

All Admin REST API endpoints that support pagination now have a default max results set to 100. If you want to return
 more than 100 entries you need to explicitly specify that with `?max=<RESULTS>`.

==== `realm-public-key` adapter property not recommended

In 2.3.0 release we added support for Public Key Rotation. When admin rotates the realm keys in Keycloak admin console, the Client
Adapter will be able to recognize it and automatically download new public key from Keycloak. However this automatic download of new
keys is done just if you don't have `realm-public-key` option in your adapter with the hardcoded public key. For this reason, we don't recommend
to use `realm-public-key` option in adapter configuration anymore.

Note this option is still supported, but it may be useful just if you really want to have hardcoded public key in your adapter configuration
and never download the public key from Keycloak. In theory, one reason for this can be to avoid man-in-the-middle attack if you have untrusted network between adapter and Keycloak,
however in that case, it is much better option to use HTTPS, which will secure all the requests between adapter and Keycloak.

==== Added Infinispan cache `keys`

In this release, we added new cache `keys` to the infinispan subsystem, which is defined in `standalone.xml` or `standalone-ha.xml` configuration file.
It has also some eviction and expiration defined. This cache is internally used for caching the external public keys of the entities
trusted by the server (Identity providers or clients, which uses authentication with signed JWT).

=== Migrating to 2.2.0

==== `databaseSchema` property deprecated

The `databaseSchema` property for both JPA and Mongo is now deprecated and has been replaced by `initializeEmpty`
and `migrationStrategy`. `initializeEmpty` can bet set to `true` or `false` and controls if an empty database should
be initialized. `migrationStrategy` can be set to `update`, `validate` and `manual`. `manual` is only supported for
relational databases and will write an SQL file with the required changes to the database schema. Please note that
for Oracle database, the created SQL file contains `SET DEFINE OFF` command understood by Oracle SQL clients.
Should the script be consumed by any other client, please replace the lines with equivalent command of the tool of
your choice that disables variable expansion or remove it completely if such functionality is not applicable.

==== Changes in Client's Valid Redirect URIs
The following scenarios are affected:

* When a Valid Redirect URI with query component is saved in a Client (e.g. `\http://localhost/auth?foo=bar`), `redirect_uri` in authorization request must exactly match this URI (or other registered URI in this Client).
* When a Valid Redirect URI without a query component is saved in a Client, `redirect_uri` must exactly match as well.
* Wildcards in registered Valid Redirect URIs are no longer supported when query component is present in this URI, so the `redirect_uri` needs to exactly match this saved URI as well.
* Fragments in registered Valid Redirect URIs (like `\http://localhost/auth#fragment`) are no longer allowed.

==== Authenticate by default removed from Identity Providers

Identity providers no longer has an option to set it as a default authenticaton provider. Instead go to Authentication, select the `Browser` flow and configure the `Identity Provider Redirector`. It has an option to set the default identity provider.

=== Migrating to 2.0.0

==== Upgrading from 1.0.0.Final no longer supported

Upgrading from 1.0.0.Final is no longer supported. To upgrade to this version upgrade to 1.9.8.Final prior to upgrading
to 2.0.0.

=== Migrating to 1.9.5

==== Default password hashing interval increased to 20K

The default password hashing interval for new realms has been increased to 20K (from 1 previously). This change will have an impact
on performance when users authenticate. For example with the old default (1) it takes less than 1 ms to hash a password, but with
the new default (20K) the same operation can take 50-100 ms.

=== Migrating to 1.9.3

==== Add User script renamed

The script to add admin users to Keycloak has been renamed to `add-user-keycloak`.

=== Migrating to 1.9.2

==== Adapter option auth-server-url-for-backend-requests removed

We've removed the option auth-server-url-for-backend-requests as there were issues in some scenarios when it was used. In more details,
it was possible to access the Keycloak server from 2 different contexts (internal and external), which was causing issues in token validations etc.

If you still want to use the optimization of network, which this option provided (avoid the application to send backchannel requests
through loadbalancer but send them to local Keycloak server directly) you may need to handle it at hosts configuration (DNS) level.


=== Migrating to 1.9.0

==== Themes and providers directory moved

We've moved the themes and providers directories from `standalone/configuration/themes` and `standalone/configuration/providers` to `themes` and `providers` respectively.
If you have added custom themes and providers you need to move them to the new location.
You also need to update `keycloak-server.json` as it's changed due to this.

==== Adapter Subsystems only bring in dependencies if Keycloak is on

Previously, if you had installed our SAML or OIDC Keycloak subsystem adapters into WildFly or JBoss EAP, we would automatically include Keycloak client jars into EVERY application irregardless if you were using Keycloak or not.
These libraries are now only added to your deployment if you have Keycloak authentication turned on for that adapter (via the subsystem, or auth-method in web.xml)

==== Client Registration service endpoints moved

The Client Registration service endpoints have been moved from `{realm-name}/clients` to `{realm-name}/clients-registrations`.

==== Session state parameter in authentication response renamed

In the OpenID Connect authentication response we used to return the session state as `session-state` this is not correct according to the specification and has been renamed to `session_state`.

==== Deprecated OpenID Connect endpoints

In 1.2 we deprecated a number of endpoints that where not consistent with the OpenID Connect specifications, these have now been removed.
This also applies to the validate token endpoints that was replaced with the new introspect endpoint in 1.8.

==== Updates to theme templates

Feedback in template.ftl has been moved and format has changed slightly.

==== Module and Source Code Re-org

Most of our modules and source code have been consolidated into two maven modules:  keycloak-server-spi and keycloak-services.
SPI interfaces are in server-spi, implementations are in keycloak-services.
All JPA dependent modules have been consolidated under keycloak-model-jpa.
Same goes with mongo and Infinispan under modules keycloak-model-mongo and keycloak-model-infinispan.

==== For adapters, session id changed after login

To plug a security attack vector, for platforms that support it (Tomcat 8, Undertow/WildFly, Jetty 9), the Keycloak OIDC and SAML adapters will change the session id after login.
You can turn off this behavior check adapter config switches.

==== SAML SP Client Adapter Changes

Keycloak SAML SP Client Adapter now requires a specific endpoint, `/saml` to be registered with your IDP.

=== Migrating to 1.8.0

==== Admin account

In previous releases we shipped with a default admin user with a default password, this has now been removed.
If you are doing a new installation of 1.8 you will have to create an admin user as a first step.

==== OAuth2 Token Introspection

In order to add more compliance with OAuth2 specification, we added a new endpoint for token introspection.
The new endpoint can reached at `/realms/{realm-name}/protocols/openid-connect/token/introspect` and it is solely based on `RFC-7662`.

The `/realms/{realm-name}/protocols/openid-connect/validate` endpoint is now deprecated and we strongly recommend you to move to the new introspection endpoint as soon as possible.
The reason for this change is that RFC-7662 provides a more standard and secure introspection endpoint.

The new token introspection URL can now be obtained from OpenID Connect Provider's configuration at `/realms/{realm-name}/.well-known/openid-configuration`.
There you will find a claim with name `token_introspection_endpoint` within the response.
Only `confidential clients` are allowed to invoke the new endpoint, where these clients will be usually acting as a resource server and looking for token metadata in order to perform local authorization checks.

=== Migrating to 1.7.0.CR1

==== Direct access grants disabled by default for clients

In order to add more compliance with OpenID Connect specification, we added flags into admin console to Client Settings page, where you can enable/disable various kinds of OpenID Connect/OAuth2 flows (Standard flow, Implicit flow, Direct Access Grants, Service Accounts). As part of this, we have `Direct Access Grants` (corresponds to OAuth2 `Resource Owner Password Credentials Grant`) disabled by default for new clients.

Clients migrated from previous version have `Direct Access Grants` enabled just if they had flag `Direct Grants Only` on.
The `Direct Grants Only` flag was removed as if you enable Direct Access Grants and disable both Standard+Implicit flow, you will achieve same effect.

We also added built-in client `admin-cli` to each realm.
This client has `Direct Access Grants` enabled.
So if you're using Admin REST API or Keycloak admin-client, you should update your configuration to use `admin-cli` instead of `security-admin-console` as the latter one doesn't have direct access grants enabled anymore by default.

==== Option 'Update Profile On First Login' moved from Identity provider to Review Profile authenticator

In this version, we added `First Broker Login`, which allows you to specify what exactly should be done when new user is logged through Identity provider (or Social provider), but there is no existing Keycloak user yet linked to the social account.
As part of this work, we added option `First Login Flow` to identity providers where you can specify the flow and then you can configure this flow under `Authentication` tab in admin console.

We also removed the option `Update Profile On First Login` from the Identity provider settings and moved it to the configuration of `Review Profile` authenticator.
So once you specify which flow should be used for your Identity provider (by default it's `First Broker Login` flow), you go to `Authentication` tab, select the flow and then you configure the option under `Review Profile` authenticator.

==== Element 'form-error-page' in web.xml not supported anymore

form-error-page in web.xml will no longer work for client adapter authentication errors.
You must define an error-page for the various HTTP error codes.
See documentation for more details if you want to catch and handle adapter error conditions.

==== IdentityProviderMapper changes

There is no change in the interface itself or method signatures.
However there is some change in behavior.
We added `First Broker Login` flow in this release and the method `IdentityProviderMapper.importNewUser` is now called after `First Broker Login` flow is finished.
So if you want to have any attribute available in `Review Profile` page, you would need to use the method `preprocessFederatedIdentity` instead of `importNewUser` . You can set any attribute by invoke `BrokeredIdentityContext.setUserAttribute` and that will be available on `Review profile` page.

=== Migrating to 1.6.0.Final

==== Option that refresh tokens are not reusable anymore

Old versions of Keycloak allowed reusing refresh tokens multiple times.
Keycloak still permits this, but also have an option `Revoke refresh token` to disallow it.
Option is under token settings in admin console.
When a refresh token is used to obtain a new access token a new refresh token is also included.
When option is enabled, then this new refresh token should be used next time the access token is refreshed.
It won't be possible to reuse old refresh token multiple times.

==== Some packages renamed

We did a bit of restructure and renamed some packages.
It is mainly about renaming internal packages of util classes.
The most important classes used in your application ( for example AccessToken or KeycloakSecurityContext ) as well as the SPI are still unchanged.
However there is slight chance that you will be affected and will need to update imports of your classes.
For example if you are using multitenancy and KeycloakConfigResolver, you will be affected as for example class HttpFacade was moved to different package - it is `org.keycloak.adapters.spi.HttpFacade` now.

==== Persisting user sessions

We added support for offline tokens in this release, which means that we are persisting "offline" user sessions into database now.
If you are not using offline tokens, nothing will be persisted for you, so you don't need to care about worse performance for more DB writes.
However in all cases, you will need to update `standalone/configuration/keycloak-server.json` and add `userSessionPersister` like this:

[source,json]
----
"userSessionPersister": {
    "provider": "jpa"
},
----
If you want sessions to be persisted in Mongo instead of classic RDBMS, use provider `mongo` instead.

=== Migrating to 1.5.0.Final

==== Realm and User cache providers

Infinispan is now the default and only realm and user cache providers.
In non-clustered mode a local Infinispan cache is used.
We've also removed our custom in-memory cache and the no cache providers.
If you have realmCache or userCache set in keycloak-server.json to mem or none please remove these.
As Infinispan is the only provider there's no longer any need for the realmCache and userCache objects so these can be removed.

==== Uses Session providers

Infinispan is now the default and only user session provider.
In non-clustered mode a local Infinispan cache is used.
We've also removed the JPA and Mongo user session providers.
If you have userSession set in keycloak-server.json to mem, jpa or mongo please remove it.
As Infinispan is the only provider there's no longer any need for the userSession object so it can be removed.

For anyone that wants to achieve increased durability of user sessions this can be achieved by configuring the user session cache with more than one owner or use a replicated cache.
It's also possible to configure Infinispan to persist caches, although that would have impacts on performance.

==== Contact details removed from registration and account management

In the default theme we have now removed the contact details from the registration page and account management.
The admin console now lists all the users attributes, not just contact specific attributes.
The admin console also has the ability to add/remove attributes to a user.
If you want to add contact details, please refer to the address theme included in the examples.

=== Migrating to 1.3.0.Final

==== Direct Grant API always enabled

In the past Direct Grant API (or Resource Owner Password Credentials) was disabled by default and there was an option on a realm to enable it.
The Direct Grant API is now always enabled and the option to enable/disable for a realm is removed.

==== Database changed

There are again few database changes.
Remember to backup your database prior to upgrading.

==== UserFederationProvider changed

There are few minor changes in UserFederationProvider interface.
You may need to sync your implementation when upgrade to newer version and upgrade few methods, which has changed signature.
Changes are really minor, but were needed to improve performance of federation.

==== WildFly 9.0.0.Final

Following on from the distribution changes that was done in the last release the standalone download of Keycloak is now based on WildFly 9.0.0.Final.
This also affects the overlay which can only be deployed to WildFly 9.0.0.Final or JBoss EAP 6.4.0.GA.
WildFly 8.2.0.Final is no longer supported for the server.

==== WildFly, JBoss EAP and JBoss AS7 adapters

There are now 3 separate adapter downloads for WildFly, JBoss EAP and JBoss AS7:

* eap6
* wf9
* wf8
* as7

Make sure you grab the correct one.

You also need to update standalone.xml as the extension module and subsystem definition has changed.
See link:{adapterguide_link}[{adapterguide_name] for details.

=== Migrating from 1.2.0.Beta1 to 1.2.0.RC1

==== Distribution changes

Keycloak is now available in 3 downloads: standalone, overlay and demo bundle.
The standalone is intended for production and non-JEE developers.
Overlay is aimed at adding Keycloak to an existing WildFly 8.2 or EAP 6.4 installation and is mainly for development.
Finally we have a demo (or dev) bundle that is aimed at developers getting started with Keycloak.
This bundle contains a WildFly server, with Keycloak server and adapter included.
It also contains all documentation and examples.

==== Database changed

This release contains again a number of changes to the database.
The biggest one is Application and OAuth client merge.
Remember to backup your database prior to upgrading.

==== Application and OAuth client merge

Application and OAuth clients are now merged into `Clients`.
The UI of admin console is updated and database as well.
Your data from database should be automatically updated.
The previously set Applications will be converted into Clients with `Consent required` switch off and OAuth Clients will be converted into Clients with this switch on.

=== Migrating from 1.1.0.Final to 1.2.0.Beta1

==== Database changed

This release contains a number of changes to the database.
Remember to backup your database prior to upgrading.

==== `iss` in access and id tokens

The value of `iss` claim in access and id tokens have changed from `realm name` to `realm url`.
This is required by OpenID Connect specification.
If you're using our adapters there's no change required, other than if you've been using bearer-only without specifying `auth-server-url` you have to add it now.
If you're using another library (or RSATokenVerifier) you need to make the corresponding changes when verifying `iss`.

==== OpenID Connect endpoints

To comply with OpenID Connect specification the authentication and token endpoints have been changed to having a single authentication endpoint and a single token endpoint.
As per-spec `response_type` and `grant_type` parameters are used to select the required flow.
The old endpoints (`/realms/{realm-name}/protocols/openid-connect/login`, `/realms/{realm-name}/protocols/openid-connect/grants/access`, `/realms/{realm-name}/protocols/openid-connect/refresh`, `/realms/{realm-name}/protocols/openid-connect/access/codes`) are now deprecated and will be removed in a future version.

==== Theme changes

The layout of themes have changed.
The directory hierarchy used to be `type/name` this is now changed to `name/type`.
For example a login theme named `sunrise` used to be deployed to `standalone/configuration/themes/login/sunrise`, which is now moved to `standalone/configuration/themes/sunrise/login`.
This change was done to make it easier to have groups of the different types for the same theme into one folder.

If you deployed themes as a JAR in the past you had to create a custom theme loader which required Java code.
This has been simplified to only requiring a plain text file (`META-INF/keycloak-themes.json`) to describe the themes included in a JAR.

==== Claims changes

Previously there was `Claims` tab in admin console for application and OAuth clients.
This was used to configure which attributes should go into access token for particular application/client.
This was removed and replaced with protocol mappers which are more flexible.

You don't need to care about migration of database from previous version.
We did migration scripts for both RDBMS and Mongo, which should ensure that claims configured for particular application/client will be converted into corresponding protocol mappers (Still it's safer to backup DB before migrating to newer version though). Same applies for exported JSON representation from previous version.

==== Social migration to identity brokering

We refactored social providers SPI and replaced it with Identity Brokering SPI, which is more flexible.
The `Social` tab in admin console is renamed to `Identity Provider` tab.

Again you don't need to care about migration of database from previous version similarly like for Claims/protocol mappers.
Both configuration of social providers and "social links" to your users will be converted to corresponding Identity providers.

Only required action from you would be to change allowed `Redirect URI` in the admin console of particular 3rd party social providers.
You can first go to the Keycloak admin console and copy Redirect URI from the page where you configure the identity provider.
Then you can simply paste this as allowed Redirect URI to the admin console of 3rd party provider (IE.
Facebook admin console).

=== Migrating from 1.1.0.Beta1 to 1.1.0.Beta2

* Adapters are now a separate download.  They are not included in appliance and war distribution.  We have too many now and the distro
  is getting bloated.
* org.keycloak.adapters.tomcat7.KeycloakAuthenticatorValve
+`org.keycloak.adapters.tomcat.KeycloakAuthenticatorValve`

* JavaScript adapter now has idToken and idTokenParsed properties. If you use idToken to retrieve first name, email, etc. you need to change this to idTokenParsed.
* The as7-eap-subsystem and keycloak-wildfly-subsystem have been merged into one keycloak-subsystem.  If you have an existing standalone.xml
  or domain.xml, you will need edit near the top of the file and change the extension module name to org.keycloak.keycloak-subsystem.
  For AS7 only, the extension module name is org.keycloak.keycloak-as7-subsystem.
* Server installation is no longer supported on AS7.  You can still use AS7 as an application client.

=== Migrating from 1.0.x.Final to 1.1.0.Beta1

* RealmModel JPA and Mongo storage schema has changed
* UserSessionModel JPA and Mongo storage schema has changed as these interfaces have been refactored
* Upgrade your adapters, old adapters are not compatible with Keycloak 1.1.  We interpreted JSON Web Token and OIDC ID Token specification incorrectly.  'aud'
  claim must be the client id, we were storing the realm name in there and validating it.

=== Migrating from 1.0 RC-1 to RC-2

* A lot of info level logging has been changed to debug. Also, a realm no longer has the jboss-logging audit listener by default.
  If you want log output when users login, logout, change passwords, etc. enable the jboss-logging audit listener through the admin console.

=== Migrating from 1.0 Beta 4 to RC-1

* logout REST API has been refactored.  The GET request on the logout URI does not take a session_state
  parameter anymore.  You must be logged in in order to log out the session.
  You can also POST to the logout REST URI.  This action requires a valid refresh token to perform the logout.
  The signature is the same as refresh token minus the grant type form parameter.  See documentation for details.

=== Migrating from 1.0 Beta 1 to Beta 4

* LDAP/AD configuration is changed.  It is no longer under the "Settings" page.  It is now under
  Users->Federation.  Add Provider will show you an "ldap" option.
* Authentication SPI has been removed and rewritten.  The new SPI is UserFederationProvider and is
  more flexible.
* ssl-not-required
+`ssl-required`
+`all`
+`external`
+`none`

* DB Schema has changed again.
* Created applications now have a full scope by default.  This means that you don't have to configure
  the scope of an application if you don't want to.
* Format of JSON file for importing realm data was changed. Now role mappings is available under the JSON record of particular
  user.

=== Migrating from 1.0 Alpha 4 to Beta 1

* DB Schema has changed.  We have added export of the database to Beta 1, but not the ability to import
  the database from older versions. This will be supported in future releases.
* For all clients except bearer-only applications, you must specify at least one redirect URI.  Keycloak
  will not allow you to log in unless you have specified a valid redirect URI for that application.
* Direct Grant API
+`ON`

* standalone/configuration/keycloak-server.json
* JavaScript adapter
* Session Timeout

=== Migrating from 1.0 Alpha 2 to Alpha 3

* SkeletonKeyToken, SkeletonKeyScope, SkeletonKeyPrincipal, and SkeletonKeySession have been renamed to:
  AccessToken, AccessScope, KeycloakPrincipal, and KeycloakAuthenticatedSession respectively.
* ServletOAuthClient.getBearerToken() method signature has changed.  It now returns an AccessTokenResponse
  so that you can obtain a refresh token too.
* Adapters now check the access token expiration with every request.  If the token is expired, they will
  attempt to invoke a refresh on the auth server using a saved refresh token.
* Subject in AccessToken has been changed to the User ID.

=== Migrating from 1.0 Alpha 1 to Alpha 2

* DB Schema has changed.  We don't have any data migration utilities yet as of Alpha 2.
* JBoss and WildFly adapters are now installed via a {appserver_name} subsystem.  Please review the adapter
  installation documentation.  Edits to standalone.xml are now required.
* There is a new credential type "secret".  Unlike other credential types, it is stored in plain text in
  the database and can be viewed in the admin console.
* There is no longer required Application or OAuth Client credentials.  These client types are now
  hard coded to use the "secret" credential type.
* Because of the "secret" credential change to Application and OAuth Client, you'll have to update
  your keycloak.json configuration files and regenarate a secret within the Application or OAuth Client
  credentials tab in the administration console.
