Add basic Polkadot support #4
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alexqrid
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alexqrid
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There is a big problem with misunderstanding uniqueness of the hash, for more info look through https://wiki.polkadot.network/docs/build-protocol-info#unique-identifiers-for-extrinsics f
| $this->module = 'polkadot-minimal'; | ||
| $this->is_main = true; | ||
| $this->currency = 'polkadot'; | ||
| $this->currency_details = ['name' => 'DOT', 'symbol' => 'DOT', 'decimals' => 10, 'description' => null]; |
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It is better to keep a comment about redenomination on block 1 248 328
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| /* This module processes some basic Polkadot transfers. It requires `subscan-explorer/subscan-essentials` to operate, | ||
| * see https://github.com/subscan-explorer/subscan-essentials/blob/master/docs/index.md for details. Please note that | ||
| * Polkadot has extrinsics instead of transactions, and not of them have "transaction hashes". Generally, this module |
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fix typo pls: "... not all of them..."
| $multi_curl = []; | ||
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| foreach ($extrinsics_with_hashes as $extrinsic_hash) | ||
| $multi_curl[] = requester_multi_prepare($this->select_node(), |
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oh, this is the wrong way, as the hash depends on extrisics body, i.e. there can be many extrinsics with the same hash.
Why don't you use block_id-extrinsic_id,i.e. extrinsic_index.
Also subscan API returns a single extrinsic for the specified hash, returning the array of extrinsics for the hash was one of our customization.
Anyway using current strategy with hash leads to reprocess extrinsics, that were already processed.
Use extrinsic_index instead of hash, as it's a unique key
| if ((int)$k['block_num'] === $block_id) | ||
| { | ||
| if ($found) | ||
| throw new ModuleError('Two extrinsics with the same hash in one block'); |
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This is not an error, this is a documented behaviour for polkadot, there's no need for the logging this as error.
| foreach ($transfers as $transfer) | ||
| { | ||
| $events[] = [ | ||
| 'transaction' => $transfer['hash'], |
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again, this is not a unique identifier, use block_number-extrinsic_number instead, it can also be interpreted as a string.
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closing in favour of #68 |
This is still somewhat WIP as the proposed module only supports some basic transfers.