Support for header-only flag on /v2/block algod endpoint. (#774)

Author: gmalouf

src/main/java/com/algorand/algosdk/v2/client/algod/GetBlock.java

@@ -25,6 +25,15 @@ public GetBlock(Client client, Long round) {
         this.round = round;
     }
 
+    /**
+     * If true, only the block header (exclusive of payset or certificate) may be
+     * included in response.
+     */
+    public GetBlock headerOnly(Boolean headerOnly) {
+        addQuery("header-only", String.valueOf(headerOnly));
+        return this;
+    }
+
    /**
     * Execute the query.
     * @return the query response object.

src/main/java/com/algorand/algosdk/v2/client/algod/GetBlockHeader.java

@@ -13,7 +13,6 @@
 import com.algorand.algosdk.v2.client.algod.GetBlock;
 import com.algorand.algosdk.v2.client.algod.GetBlockTxids;
 import com.algorand.algosdk.v2.client.algod.GetBlockHash;
-import com.algorand.algosdk.v2.client.algod.GetBlockHeader;
 import com.algorand.algosdk.v2.client.algod.GetTransactionProof;
 import com.algorand.algosdk.v2.client.algod.GetBlockLogs;
 import com.algorand.algosdk.v2.client.algod.GetSupply;
@@ -181,14 +180,6 @@ public GetBlockHash GetBlockHash(Long round) {
         return new GetBlockHash((Client) this, round);
     }
 
-    /**
-     * Get the block header for the block on the given round.
-     * /v2/blocks/{round}/header
-     */
-    public GetBlockHeader GetBlockHeader(Long round) {
-        return new GetBlockHeader((Client) this, round);
-    }
-
     /**
      * Get a proof for a transaction in a block.
      * /v2/blocks/{round}/transactions/{txid}/proof

src/main/java/com/algorand/algosdk/v2/client/common/AlgodClient.java

@@ -2,11 +2,7 @@
 
 import com.algorand.algosdk.crypto.Address;
 import com.algorand.algosdk.unit.utils.TestingUtils;
-import com.algorand.algosdk.v2.client.algod.AccountInformation;
-import com.algorand.algosdk.v2.client.algod.GetApplicationBoxes;
-import com.algorand.algosdk.v2.client.algod.GetPendingTransactions;
-import com.algorand.algosdk.v2.client.algod.GetPendingTransactionsByAddress;
-import com.algorand.algosdk.v2.client.algod.GetTransactionProof;
+import com.algorand.algosdk.v2.client.algod.*;
 import com.algorand.algosdk.v2.client.common.AlgodClient;
 import com.algorand.algosdk.v2.client.model.Enums;
 import io.cucumber.java.en.When;
@@ -59,6 +55,19 @@ public void getBlock(Long round, String format) {
         ps.q = algodClient.GetBlock(round);
     }
 
+    @When("we make a Get Block call for round {int} with format {string} and header-only {string}")
+    public void getBlockHeaderOnly(Integer round, String format, String headerOnly) {
+        GetBlock gb = algodClient.GetBlock(Long.valueOf(round));
+
+        boolean headerOnlyBool = Boolean.parseBoolean(headerOnly);
+
+        if (headerOnlyBool) {
+            gb.headerOnly(true);
+        }
+
+        ps.q = gb;
+    }
+
     @When("we make a GetAssetByID call for assetID {long}")
     public void getAssetByID(Long id) {
         ps.q = algodClient.GetAssetByID(id);

src/main/java/com/algorand/algosdk/v2/client/model/BlockHeaderResponse.java

@@ -139,6 +139,12 @@ public void the_parsed_Get_Block_response_should_have_rewards_pool(String string
         verifyResponse(blockResponse, shared.bodyFile);
     }
 
+    @Then("the parsed Get Block response should have rewards pool {string} and no certificate or payset")
+    public void the_parsed_get_block_response_should_have_rewards_pool_and_no_certificate_or_payset(String string) throws IOException {
+        verifyResponse(blockResponse, shared.bodyFile);
+    }
+
+
     @Then("the parsed Get Block response should have heartbeat address {string}")
     public void the_parsed_Get_Block_response_should_have_heartbeat_address(String string) throws IOException {
         verifyResponse(blockResponse, shared.bodyFile);