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The clique API provides access to the state of the clique consensus engine. You can use this API to manage signer votes and to check the health of a private network.

clique.getSnapshot

Retrieves a snapshot of all clique state at a given block.

Example

> clique.getSnapshot(5463755)
{
  hash: "0x018194fc50ca62d973e2f85cffef1e6811278ffd2040a4460537f8dbec3d5efc",
  number: 5463755,
  recents: {
    5463752: "0x42eb768f2244c8811c63729a21a3569731535f06",
    5463753: "0x6635f83421bf059cd8111f180f0727128685bae4",
    5463754: "0x7ffc57839b00206d1ad20c69a1981b489f772031",
    5463755: "0xb279182d99e65703f0076e4812653aab85fca0f0"
  },
  signers: {
    0x42eb768f2244c8811c63729a21a3569731535f06: {},
    0x6635f83421bf059cd8111f180f0727128685bae4: {},
    0x7ffc57839b00206d1ad20c69a1981b489f772031: {},
    0xb279182d99e65703f0076e4812653aab85fca0f0: {},
    0xd6ae8250b8348c94847280928c79fb3b63ca453e: {},
    0xda35dee8eddeaa556e4c26268463e26fb91ff74f: {},
    0xfc18cbc391de84dbd87db83b20935d3e89f5dd91: {}
  },
  tally: {},
  votes: []
}

clique_getSnapshotAtHash

Retrieves the state snapshot at a given block.

clique_getSigners

Retrieves the list of authorized signers at the specified block.

clique_proposals

Returns the current proposals the node is voting on.

clique_propose

Adds a new authorization proposal that the signer will attempt to push through. If the auth parameter is true, the local signer votes for the given address to be included in the set of authorized signers. With auth set to false, the vote is against the address.

clique_discard

This method drops a currently running proposal. The signer will not cast further votes (either for or against) the address.

clique_status

This is a debugging method which returns statistics about signer activity for the last 64 blocks. The returned object contains the following fields:

  • inturnPercent: percentage of blocks signed in-turn
  • sealerActivity: object containing signer addresses and the number of blocks signed by them
  • numBlocks: number of blocks analyzed

Example:

> clique.status()
{
  inturnPercent: 100,
  numBlocks: 64,
  sealerActivity: {
    0x42eb768f2244c8811c63729a21a3569731535f06: 9,
    0x6635f83421bf059cd8111f180f0727128685bae4: 9,
    0x7ffc57839b00206d1ad20c69a1981b489f772031: 9,
    0xb279182d99e65703f0076e4812653aab85fca0f0: 10,
    0xd6ae8250b8348c94847280928c79fb3b63ca453e: 9,
    0xda35dee8eddeaa556e4c26268463e26fb91ff74f: 9,
    0xfc18cbc391de84dbd87db83b20935d3e89f5dd91: 9
  }
}