Prepare 4.0.0 pre-release

Author: mesudip

.ci/Dockerfile

@@ -13,4 +13,4 @@ ENV CARDANO_ERA=Conway
 WORKDIR /app
 EXPOSE 8081
 HEALTHCHECK --interval=40s --timeout=10s --start-period=30s --retries=2 CMD [ "/bin/kuber-server" , "--healthcheck" ]
-ENTRYPOINT  /bin/kuber-server
+ENTRYPOINT  ["/bin/kuber-server"]

.ci/build

@@ -70,7 +70,7 @@ if [[ "$1" == cabal* ]] ; then
     execute-isolated "$@" # execute the cabal command
 else
     ## default build
-    execute-isolated 'cabal build exe:kuber-server && bash -e ./.ci/copy-libraries.sh'
+    execute-isolated 'cabal build exe:kuber-server exe:kuber-hydra  && bash -e ./.ci/copy-libraries.sh'
 
     ## build  final docker image. by determining the git revision or passing the arguments to docker command.
 

.ci/copy-libraries.sh

@@ -59,6 +59,7 @@ function getVersion(){
 
 #Get the library dependencies
 copyExecutable "$(findExecutable kuber-server)"
+copyExecutable "$(findExecutable kuber-hydra)"
 copyExecutable /bin/bash
 copyExecutable /bin/ls
 copyExecutable /bin/sh

CHANGELOG.md

@@ -1,3 +1,42 @@
+## v4.0.0-rc1 : Hydra Integration
+This release introduces **kuber-hydra**, a dedicated module that adds full Hydra head
+support to Kuber.  The new module exposes a set of **command** and **query** APIs for
+**committing**, **decommitting**, **closing**, **fan‑out**, **contesting**, and **querying** the state of a
+Hydra head, along with a **transaction‑builder** helper and APIs.
+
+**Note :** `kuber-hydra` executable additionally exposes all layer1 endpoints making it versatile for both hydra and l1 interaction.
+
+##### DependsOn
+- cardano-api:10.1
+
+##### Tested with
+- hydra-node:0.22.0-65b4c1201e7533d4269d42e2ca1c8b53f999454f
+
+### Changes: kuber-hydra
+- Added new module `kuber-hydra` with:
+  - **Command endpoints** under `/api/hydra`:
+    - **POST** /hydra/init
+    - **POST** /hydra/abort
+    - **POST** /hydra/commit
+    - **POST** /hydra/decommit
+    - **POST** /hydra/close
+    - **POST** /hydra/contest
+    - **POST** /hydra/fanout
+    - **POST** /hydra/tx
+    - **POST** /hydra/submit
+  - **Query endpoints** under `/api/hydra/query`:
+    - **GET** /hydra/query/utxo
+    - **GET** /hydra/query/head
+    - **GET** /hydra/query/protocol-parameters
+    - **GET** /hydra/query/state
+    - **GET** /hydra/query/commits
+- Implemented a Hydra transaction‑builder that:
+  - Selects inputs/outputs
+  - Handles optional signing keys
+  - Filters UTxOs by txin and address
+- Updated Hydra‑specific documentation and added sequence diagrams illustrating
+  typical Hydra head interactions.
+
 ## v3.1.2 : Upgrade cardano-api to 10.x
 
 ### Changes
@@ -86,4 +125,3 @@ This stable release supports adds full support for new conway governance feature
 - `TxBuilder`  is now parametrized on `era` suppporting `Babbage` and `Conway` eras, with `IsTxBuilderEra` constraint.
 - Kuber Offchain code required Local Node Socket. **WIP** support running kuber code by connecting to kuber server
 - Remove `ChainConnectInfo`and related classes.  Instead, use `LocalNodeConnectInfo CardanoMode` directly.
-

kuber-hydra/kuber-hydra.cabal

@@ -20,7 +20,7 @@ name:               kuber-hydra
 -- PVP summary:     +-+------- breaking API changes
 --                  | | +----- non-breaking API additions
 --                  | | | +--- code changes with no API change
-version:            0.1.0.0
+version:            4.0.0.1
 
 -- A short (one-line) description of the package.
 -- synopsis:

kuber-server/kuber-server.cabal

@@ -1,6 +1,6 @@
 cabal-version:      2.4
 name:               kuber-server
-version:            3.1.2.0
+version:            4.0.0.1
 
 -- A short (one-line) description of the package.
 -- synopsis:

kuber.cabal

@@ -1,6 +1,6 @@
 cabal-version:      2.4
 name:               kuber
-version:            3.1.2.0
+version:            4.0.0.1
 
 -- A short (one-line) description of the package.
 -- synopsis:
@@ -93,10 +93,10 @@ library
     , transformers
     , unordered-containers
     , time
-    ,  servant
-    ,  servant-client
-    ,  http-media
-    ,  http-client
+    , servant
+    , servant-client
+    , http-media
+    , http-client
     , network-uri
     , http-types
     , http-client-tls