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// SPDX-License-Identifier: Apache-2.0
use hiero_sdk_proto::services;
use time::{
Duration,
OffsetDateTime,
};
use crate::custom_fixed_fee::CustomFixedFee;
use crate::protobuf::ToProtobuf;
use crate::{
AccountId,
FromProtobuf,
Key,
LedgerId,
TopicId,
};
/// Response from [`TopicInfoQuery`][crate::TopicInfoQuery].
#[derive(Debug, Clone)]
pub struct TopicInfo {
/// The ID of the topic for which information is requested.
pub topic_id: TopicId,
/// Short publicly visible memo about the topic. No guarantee of uniqueness
pub topic_memo: String,
/// SHA-384 running hash of (previousRunningHash, topicId, consensusTimestamp, sequenceNumber, message).
pub running_hash: Vec<u8>,
/// Sequence number (starting at 1 for the first submitMessage) of messages on the topic.
pub sequence_number: u64,
/// Effective consensus timestamp at (and after) which submitMessage calls will no longer succeed on the topic.
pub expiration_time: Option<OffsetDateTime>,
/// Access control for update/delete of the topic.
pub admin_key: Option<Key>,
/// Access control for submit message.
pub submit_key: Option<Key>,
/// An account which will be automatically charged to renew the topic's expiration, at
/// `auto_renew_period` interval.
pub auto_renew_account_id: Option<AccountId>,
/// The interval at which the auto-renew account will be charged to extend the topic's expiry.
pub auto_renew_period: Option<Duration>,
/// The ledger ID the response was returned from
pub ledger_id: LedgerId,
/// Access control for update/delete of custom fees.
pub fee_schedule_key: Option<Key>,
/// If the transaction contains a signer from this list, no custom fees are applied.
pub fee_exempt_keys: Vec<Key>,
/// List of custom fees.
pub custom_fees: Vec<CustomFixedFee>,
}
impl TopicInfo {
/// Create a new `TopicInfo` from protobuf-encoded `bytes`.
///
/// # Errors
/// - [`Error::FromProtobuf`](crate::Error::FromProtobuf) if decoding the bytes fails to produce a valid protobuf.
/// - [`Error::FromProtobuf`](crate::Error::FromProtobuf) if decoding the protobuf fails.
pub fn from_bytes(bytes: &[u8]) -> crate::Result<Self> {
FromProtobuf::<services::ConsensusGetTopicInfoResponse>::from_bytes(bytes)
}
/// Convert `self` to a protobuf-encoded [`Vec<u8>`].
#[must_use]
pub fn to_bytes(&self) -> Vec<u8> {
ToProtobuf::to_bytes(self)
}
}
impl FromProtobuf<services::response::Response> for TopicInfo {
fn from_protobuf(pb: services::response::Response) -> crate::Result<Self>
where
Self: Sized,
{
let response = pb_getv!(pb, ConsensusGetTopicInfo, services::response::Response);
Self::from_protobuf(response)
}
}
impl FromProtobuf<services::ConsensusGetTopicInfoResponse> for TopicInfo {
fn from_protobuf(pb: services::ConsensusGetTopicInfoResponse) -> crate::Result<Self>
where
Self: Sized,
{
let topic_id = pb_getf!(pb, topic_id)?;
let info = pb_getf!(pb, topic_info)?;
let admin_key = Option::from_protobuf(info.admin_key)?;
let submit_key = Option::from_protobuf(info.submit_key)?;
let expiration_time = info.expiration_time.map(Into::into);
let auto_renew_period = info.auto_renew_period.map(Into::into);
let auto_renew_account_id = Option::from_protobuf(info.auto_renew_account)?;
let ledger_id = LedgerId::from_bytes(info.ledger_id);
let fee_schedule_key = Option::from_protobuf(info.fee_schedule_key)?;
let mut fee_exempt_keys = Vec::new();
for pb_key in info.fee_exempt_key_list {
fee_exempt_keys.push(Key::from_protobuf(pb_key)?);
}
let mut custom_fees = Vec::new();
for pb_fee in info.custom_fees {
custom_fees.push(CustomFixedFee::from_protobuf(pb_fee)?);
}
Ok(Self {
topic_id: TopicId::from_protobuf(topic_id)?,
admin_key,
submit_key,
auto_renew_period,
auto_renew_account_id,
running_hash: info.running_hash,
sequence_number: info.sequence_number,
expiration_time,
topic_memo: info.memo,
ledger_id,
fee_schedule_key,
fee_exempt_keys,
custom_fees,
})
}
}
impl ToProtobuf for TopicInfo {
type Protobuf = services::ConsensusGetTopicInfoResponse;
fn to_protobuf(&self) -> Self::Protobuf {
services::ConsensusGetTopicInfoResponse {
topic_id: Some(self.topic_id.to_protobuf()),
topic_info: Some(services::ConsensusTopicInfo {
memo: self.topic_memo.clone(),
running_hash: self.running_hash.clone(),
sequence_number: self.sequence_number,
expiration_time: self.expiration_time.to_protobuf(),
admin_key: self.admin_key.to_protobuf(),
submit_key: self.submit_key.to_protobuf(),
auto_renew_period: self.auto_renew_period.to_protobuf(),
auto_renew_account: self.auto_renew_account_id.to_protobuf(),
ledger_id: self.ledger_id.to_bytes(),
custom_fees: vec![],
fee_exempt_key_list: vec![],
fee_schedule_key: None,
}),
header: None,
}
}
}
#[cfg(test)]
mod tests {
use expect_test::expect;
use hiero_sdk_proto::services;
use prost::Message;
use crate::protobuf::{
FromProtobuf,
ToProtobuf,
};
use crate::transaction::test_helpers::unused_private_key;
use crate::{
LedgerId,
TopicInfo,
};
fn make_info() -> services::ConsensusGetTopicInfoResponse {
services::ConsensusGetTopicInfoResponse {
header: None,
topic_id: Some(services::TopicId { shard_num: 1, realm_num: 2, topic_num: 3 }),
topic_info: Some(services::ConsensusTopicInfo {
memo: "1".to_owned(),
running_hash: Vec::from([2]),
sequence_number: 3,
expiration_time: Some(services::Timestamp { seconds: 0, nanos: 4_000_000 }),
admin_key: Some(unused_private_key().public_key().to_protobuf()),
submit_key: Some(unused_private_key().public_key().to_protobuf()),
auto_renew_period: Some(services::Duration { seconds: 5 * 24 * 60 * 60 }),
auto_renew_account: Some(services::AccountId {
shard_num: 0,
realm_num: 0,
account: Some(services::account_id::Account::AccountNum(4)),
}),
ledger_id: LedgerId::testnet().to_bytes(),
custom_fees: vec![],
fee_exempt_key_list: vec![],
fee_schedule_key: None,
}),
}
}
#[test]
fn from_protobuf() {
expect![[r#"
TopicInfo {
topic_id: "1.2.3",
topic_memo: "1",
running_hash: [
2,
],
sequence_number: 3,
expiration_time: Some(
1970-01-01 0:00:00.004 +00:00:00,
),
admin_key: Some(
Single(
"302a300506032b6570032100e0c8ec2758a5879ffac226a13c0c516b799e72e35141a0dd828f94d37988a4b7",
),
),
submit_key: Some(
Single(
"302a300506032b6570032100e0c8ec2758a5879ffac226a13c0c516b799e72e35141a0dd828f94d37988a4b7",
),
),
auto_renew_account_id: Some(
"0.0.4",
),
auto_renew_period: Some(
Duration {
seconds: 432000,
nanoseconds: 0,
},
),
ledger_id: "testnet",
fee_schedule_key: None,
fee_exempt_keys: [],
custom_fees: [],
}
"#]]
.assert_debug_eq(&TopicInfo::from_protobuf(make_info()).unwrap())
}
#[test]
fn to_protobuf() {
expect![[r#"
ConsensusGetTopicInfoResponse {
header: None,
topic_id: Some(
TopicId {
shard_num: 1,
realm_num: 2,
topic_num: 3,
},
),
topic_info: Some(
ConsensusTopicInfo {
memo: "1",
running_hash: [
2,
],
sequence_number: 3,
expiration_time: Some(
Timestamp {
seconds: 0,
nanos: 4000000,
},
),
admin_key: Some(
Key {
key: Some(
Ed25519(
[
224,
200,
236,
39,
88,
165,
135,
159,
250,
194,
38,
161,
60,
12,
81,
107,
121,
158,
114,
227,
81,
65,
160,
221,
130,
143,
148,
211,
121,
136,
164,
183,
],
),
),
},
),
submit_key: Some(
Key {
key: Some(
Ed25519(
[
224,
200,
236,
39,
88,
165,
135,
159,
250,
194,
38,
161,
60,
12,
81,
107,
121,
158,
114,
227,
81,
65,
160,
221,
130,
143,
148,
211,
121,
136,
164,
183,
],
),
),
},
),
auto_renew_period: Some(
Duration {
seconds: 432000,
},
),
auto_renew_account: Some(
AccountId {
shard_num: 0,
realm_num: 0,
account: Some(
AccountNum(
4,
),
),
},
),
ledger_id: [
1,
],
fee_schedule_key: None,
fee_exempt_key_list: [],
custom_fees: [],
},
),
}
"#]]
.assert_debug_eq(&TopicInfo::from_protobuf(make_info()).unwrap().to_protobuf())
}
#[test]
fn from_bytes() {
expect![[r#"
TopicInfo {
topic_id: "1.2.3",
topic_memo: "1",
running_hash: [
2,
],
sequence_number: 3,
expiration_time: Some(
1970-01-01 0:00:00.004 +00:00:00,
),
admin_key: Some(
Single(
"302a300506032b6570032100e0c8ec2758a5879ffac226a13c0c516b799e72e35141a0dd828f94d37988a4b7",
),
),
submit_key: Some(
Single(
"302a300506032b6570032100e0c8ec2758a5879ffac226a13c0c516b799e72e35141a0dd828f94d37988a4b7",
),
),
auto_renew_account_id: Some(
"0.0.4",
),
auto_renew_period: Some(
Duration {
seconds: 432000,
nanoseconds: 0,
},
),
ledger_id: "testnet",
fee_schedule_key: None,
fee_exempt_keys: [],
custom_fees: [],
}
"#]]
.assert_debug_eq(&TopicInfo::from_bytes(&make_info().encode_to_vec()).unwrap())
}
}