Use Sourcify v2 endpoint for contract lookups (#1957)

* Use Sourcify v2 endpoint for contract lookups

* Fix lint

* simplify sourcify error handling

* add test, relax timeout values for init.test.ts

---------

Co-authored-by: YaroShkvorets <shkvorets@gmail.com>

Author: 0237h

.changeset/giant-owls-accept.md

@@ -0,0 +1,5 @@
+---
+'@graphprotocol/graph-cli': patch
+---
+
+Use Sourcify v2 endpoint for contract lookups

packages/cli/src/command-helpers/contracts.test.ts

@@ -93,6 +93,12 @@ const TEST_SOURCIFY_CONTRACT_INFO = {
       startBlock: 10_736_242,
     },
   },
+  'mainnet-non-verified': {
+    '0x4a183b7ED67B9E14b3f45Abfb2Cf44ed22c29E54': {
+      name: null,
+      startBlock: null,
+    },
+  },
   optimism: {
     '0xc35DADB65012eC5796536bD9864eD8773aBc74C4': {
       name: 'BentoBoxV1',
@@ -111,6 +117,13 @@ const TEST_SOURCIFY_CONTRACT_INFO = {
       startBlock: null,
     },
   },
+  // Invalid address (missing 0x)
+  matic: {
+    '0000000000000000000000000000000000000000': {
+      name: null,
+      startBlock: null,
+    },
+  },
 };
 
 // Retry helper with configurable number of retries

packages/cli/src/command-helpers/contracts.ts

@@ -163,37 +163,32 @@ export class ContractService {
       if (!network.caip2Id.startsWith('eip155'))
         throw new Error(`Invalid chainId, Sourcify API only supports EVM chains`);
 
+      if (!address.startsWith('0x') || address.length != 42)
+        throw new Error(`Invalid address, must start with 0x prefix and be 20 bytes long`);
+
       const chainId = network.caip2Id.split(':')[1];
-      const url = `https://sourcify.dev/server/files/any/${chainId}/${address}`;
-      const json:
-        | {
-            status: string;
-            files: { name: string; path: string; content: string }[];
-          }
-        | { error: string } = await (
-        await fetch(url).catch(error => {
-          throw new Error(`Sourcify API is unreachable: ${error}`);
-        })
-      ).json();
+      const url = `https://sourcify.dev/server/v2/contract/${chainId}/${address}?fields=abi,compilation,deployment`;
+      const resp = await fetch(url).catch(error => {
+        throw new Error(`Sourcify API is unreachable: ${error}`);
+      });
+      if (resp.status === 404) throw new Error(`Sourcify API says contract is not verified`);
+      if (!resp.ok) throw new Error(`Sourcify API returned status ${resp.status}`);
+      const json: {
+        abi: any[];
+        compilation: { name: string };
+        deployment: { blockNumber: string };
+      } = await resp.json();
 
       if (json) {
-        if ('error' in json) throw new Error(`Sourcify API error: ${json.error}`);
-
-        let metadata: any = json.files.find(e => e.name === 'metadata.json')?.content;
-        if (!metadata) throw new Error('Contract is missing metadata');
-
-        const tx_hash = json.files.find(e => e.name === 'creator-tx-hash.txt')?.content;
-        if (!tx_hash) throw new Error('Contract is missing tx creation hash');
+        const abi = json.abi;
+        const contractName = json.compilation?.name;
+        const blockNumber = json.deployment?.blockNumber;
 
-        const tx = await this.fetchTransactionByHash(networkId, tx_hash);
-        if (!tx?.blockNumber)
-          throw new Error(`Can't fetch blockNumber from tx: ${JSON.stringify(tx)}`);
+        if (!abi || !contractName || !blockNumber) throw new Error('Contract is missing metadata');
 
-        metadata = JSON.parse(metadata);
-        const contractName = Object.values(metadata.settings.compilationTarget)[0] as string;
         return {
-          abi: new ABICtor(contractName, undefined, immutable.fromJS(metadata.output.abi)) as ABI,
-          startBlock: Number(tx.blockNumber).toString(),
+          abi: new ABICtor(contractName, undefined, immutable.fromJS(abi)) as ABI,
+          startBlock: Number(blockNumber).toString(),
           name: contractName,
         };
       }

packages/cli/tests/cli/init.test.ts

@@ -8,7 +8,7 @@ describe(
   'Init',
   {
     sequential: true,
-    timeout: 100_000,
+    timeout: 500_000,
   },
   () => {
     const baseDir = path.join(__dirname, 'init');
@@ -31,7 +31,7 @@ describe(
         path.join('init', 'ethereum', 'from-example'),
         {
           exitCode: 0,
-          timeout: 100_000,
+          timeout: 200_000,
           cwd: ethereumBaseDir,
           deleteDir: true,
         },