status-go/services/shhext/mailservers/connmanager.go

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Mail peer store and connection manager (#1295) This change implements connection manager that monitors 3 types of events: 1. update of the selected mail servers 2. disconnect from a mail server 3. errors for requesting mail history When selected mail servers provided we will try to connect with as many as possible, and later disconnect the surplus. For example if we want to connect with one mail server and 3 were selected, we try to connect with all (3), and later disconnect with 2. It will to establish connection with live mail server faster. If mail server disconnects we will choose any other mail server from the list of selected. Unless we have only one mail server. In such case we don't have any other choice and we will leave things as is. If request for history was expired we will disconnect such peer and try to find another one. We will follow same rules as described above. We will have two components that will rely on this logic: 1. requesting history If target peer is provided we will use that peer, otherwise we will request history from any selected mail server that is connected at the time of request. 2. confirmation from selected mail server Confirmation from any selected mail server will bee used to send a feedback that envelope was sent. I will add several extensions, but probably in separate PRs: 1. prioritize connection with mail server that was used before reboot 2. disconnect from mail servers if history request wasn't expired but failed. 3. wait some time in RequestsMessage RPC to establish connection with any mail server Currently this feature is hidden, as certain changes will be necessary in status-react. partially implements: https://github.com/status-im/status-go/issues/1285
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package mailservers
import (
"sync"
"time"
Mail peer store and connection manager (#1295) This change implements connection manager that monitors 3 types of events: 1. update of the selected mail servers 2. disconnect from a mail server 3. errors for requesting mail history When selected mail servers provided we will try to connect with as many as possible, and later disconnect the surplus. For example if we want to connect with one mail server and 3 were selected, we try to connect with all (3), and later disconnect with 2. It will to establish connection with live mail server faster. If mail server disconnects we will choose any other mail server from the list of selected. Unless we have only one mail server. In such case we don't have any other choice and we will leave things as is. If request for history was expired we will disconnect such peer and try to find another one. We will follow same rules as described above. We will have two components that will rely on this logic: 1. requesting history If target peer is provided we will use that peer, otherwise we will request history from any selected mail server that is connected at the time of request. 2. confirmation from selected mail server Confirmation from any selected mail server will bee used to send a feedback that envelope was sent. I will add several extensions, but probably in separate PRs: 1. prioritize connection with mail server that was used before reboot 2. disconnect from mail servers if history request wasn't expired but failed. 3. wait some time in RequestsMessage RPC to establish connection with any mail server Currently this feature is hidden, as certain changes will be necessary in status-react. partially implements: https://github.com/status-im/status-go/issues/1285
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"github.com/ethereum/go-ethereum/event"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/p2p"
"github.com/ethereum/go-ethereum/p2p/enode"
"github.com/status-im/status-go/eth-node/types"
Mail peer store and connection manager (#1295) This change implements connection manager that monitors 3 types of events: 1. update of the selected mail servers 2. disconnect from a mail server 3. errors for requesting mail history When selected mail servers provided we will try to connect with as many as possible, and later disconnect the surplus. For example if we want to connect with one mail server and 3 were selected, we try to connect with all (3), and later disconnect with 2. It will to establish connection with live mail server faster. If mail server disconnects we will choose any other mail server from the list of selected. Unless we have only one mail server. In such case we don't have any other choice and we will leave things as is. If request for history was expired we will disconnect such peer and try to find another one. We will follow same rules as described above. We will have two components that will rely on this logic: 1. requesting history If target peer is provided we will use that peer, otherwise we will request history from any selected mail server that is connected at the time of request. 2. confirmation from selected mail server Confirmation from any selected mail server will bee used to send a feedback that envelope was sent. I will add several extensions, but probably in separate PRs: 1. prioritize connection with mail server that was used before reboot 2. disconnect from mail servers if history request wasn't expired but failed. 3. wait some time in RequestsMessage RPC to establish connection with any mail server Currently this feature is hidden, as certain changes will be necessary in status-react. partially implements: https://github.com/status-im/status-go/issues/1285
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)
const (
peerEventsBuffer = 10 // sufficient buffer to avoid blocking a p2p feed.
whisperEventsBuffer = 20 // sufficient buffer to avod blocking a whisper envelopes feed.
)
// PeerAdderRemover is an interface for adding or removing peers.
type PeerAdderRemover interface {
AddPeer(node *enode.Node)
RemovePeer(node *enode.Node)
}
// PeerEventsSubscriber interface to subscribe for p2p.PeerEvent's.
type PeerEventsSubscriber interface {
SubscribeEvents(chan *p2p.PeerEvent) event.Subscription
}
// EnvelopeEventSubscriber interface to subscribe for types.EnvelopeEvent's.
type EnvelopeEventSubscriber interface {
SubscribeEnvelopeEvents(chan<- types.EnvelopeEvent) types.Subscription
Mail peer store and connection manager (#1295) This change implements connection manager that monitors 3 types of events: 1. update of the selected mail servers 2. disconnect from a mail server 3. errors for requesting mail history When selected mail servers provided we will try to connect with as many as possible, and later disconnect the surplus. For example if we want to connect with one mail server and 3 were selected, we try to connect with all (3), and later disconnect with 2. It will to establish connection with live mail server faster. If mail server disconnects we will choose any other mail server from the list of selected. Unless we have only one mail server. In such case we don't have any other choice and we will leave things as is. If request for history was expired we will disconnect such peer and try to find another one. We will follow same rules as described above. We will have two components that will rely on this logic: 1. requesting history If target peer is provided we will use that peer, otherwise we will request history from any selected mail server that is connected at the time of request. 2. confirmation from selected mail server Confirmation from any selected mail server will bee used to send a feedback that envelope was sent. I will add several extensions, but probably in separate PRs: 1. prioritize connection with mail server that was used before reboot 2. disconnect from mail servers if history request wasn't expired but failed. 3. wait some time in RequestsMessage RPC to establish connection with any mail server Currently this feature is hidden, as certain changes will be necessary in status-react. partially implements: https://github.com/status-im/status-go/issues/1285
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}
type p2pServer interface {
PeerAdderRemover
PeerEventsSubscriber
}
// NewConnectionManager creates an instance of ConnectionManager.
func NewConnectionManager(server p2pServer, whisper EnvelopeEventSubscriber, target, maxFailures int, timeout time.Duration) *ConnectionManager {
Mail peer store and connection manager (#1295) This change implements connection manager that monitors 3 types of events: 1. update of the selected mail servers 2. disconnect from a mail server 3. errors for requesting mail history When selected mail servers provided we will try to connect with as many as possible, and later disconnect the surplus. For example if we want to connect with one mail server and 3 were selected, we try to connect with all (3), and later disconnect with 2. It will to establish connection with live mail server faster. If mail server disconnects we will choose any other mail server from the list of selected. Unless we have only one mail server. In such case we don't have any other choice and we will leave things as is. If request for history was expired we will disconnect such peer and try to find another one. We will follow same rules as described above. We will have two components that will rely on this logic: 1. requesting history If target peer is provided we will use that peer, otherwise we will request history from any selected mail server that is connected at the time of request. 2. confirmation from selected mail server Confirmation from any selected mail server will bee used to send a feedback that envelope was sent. I will add several extensions, but probably in separate PRs: 1. prioritize connection with mail server that was used before reboot 2. disconnect from mail servers if history request wasn't expired but failed. 3. wait some time in RequestsMessage RPC to establish connection with any mail server Currently this feature is hidden, as certain changes will be necessary in status-react. partially implements: https://github.com/status-im/status-go/issues/1285
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return &ConnectionManager{
server: server,
whisper: whisper,
connectedTarget: target,
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maxFailures: maxFailures,
notifications: make(chan []*enode.Node),
timeoutWaitAdded: timeout,
Mail peer store and connection manager (#1295) This change implements connection manager that monitors 3 types of events: 1. update of the selected mail servers 2. disconnect from a mail server 3. errors for requesting mail history When selected mail servers provided we will try to connect with as many as possible, and later disconnect the surplus. For example if we want to connect with one mail server and 3 were selected, we try to connect with all (3), and later disconnect with 2. It will to establish connection with live mail server faster. If mail server disconnects we will choose any other mail server from the list of selected. Unless we have only one mail server. In such case we don't have any other choice and we will leave things as is. If request for history was expired we will disconnect such peer and try to find another one. We will follow same rules as described above. We will have two components that will rely on this logic: 1. requesting history If target peer is provided we will use that peer, otherwise we will request history from any selected mail server that is connected at the time of request. 2. confirmation from selected mail server Confirmation from any selected mail server will bee used to send a feedback that envelope was sent. I will add several extensions, but probably in separate PRs: 1. prioritize connection with mail server that was used before reboot 2. disconnect from mail servers if history request wasn't expired but failed. 3. wait some time in RequestsMessage RPC to establish connection with any mail server Currently this feature is hidden, as certain changes will be necessary in status-react. partially implements: https://github.com/status-im/status-go/issues/1285
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}
}
// ConnectionManager manages keeps target of peers connected.
type ConnectionManager struct {
wg sync.WaitGroup
quit chan struct{}
server p2pServer
whisper EnvelopeEventSubscriber
Mail peer store and connection manager (#1295) This change implements connection manager that monitors 3 types of events: 1. update of the selected mail servers 2. disconnect from a mail server 3. errors for requesting mail history When selected mail servers provided we will try to connect with as many as possible, and later disconnect the surplus. For example if we want to connect with one mail server and 3 were selected, we try to connect with all (3), and later disconnect with 2. It will to establish connection with live mail server faster. If mail server disconnects we will choose any other mail server from the list of selected. Unless we have only one mail server. In such case we don't have any other choice and we will leave things as is. If request for history was expired we will disconnect such peer and try to find another one. We will follow same rules as described above. We will have two components that will rely on this logic: 1. requesting history If target peer is provided we will use that peer, otherwise we will request history from any selected mail server that is connected at the time of request. 2. confirmation from selected mail server Confirmation from any selected mail server will bee used to send a feedback that envelope was sent. I will add several extensions, but probably in separate PRs: 1. prioritize connection with mail server that was used before reboot 2. disconnect from mail servers if history request wasn't expired but failed. 3. wait some time in RequestsMessage RPC to establish connection with any mail server Currently this feature is hidden, as certain changes will be necessary in status-react. partially implements: https://github.com/status-im/status-go/issues/1285
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notifications chan []*enode.Node
connectedTarget int
timeoutWaitAdded time.Duration
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maxFailures int
Mail peer store and connection manager (#1295) This change implements connection manager that monitors 3 types of events: 1. update of the selected mail servers 2. disconnect from a mail server 3. errors for requesting mail history When selected mail servers provided we will try to connect with as many as possible, and later disconnect the surplus. For example if we want to connect with one mail server and 3 were selected, we try to connect with all (3), and later disconnect with 2. It will to establish connection with live mail server faster. If mail server disconnects we will choose any other mail server from the list of selected. Unless we have only one mail server. In such case we don't have any other choice and we will leave things as is. If request for history was expired we will disconnect such peer and try to find another one. We will follow same rules as described above. We will have two components that will rely on this logic: 1. requesting history If target peer is provided we will use that peer, otherwise we will request history from any selected mail server that is connected at the time of request. 2. confirmation from selected mail server Confirmation from any selected mail server will bee used to send a feedback that envelope was sent. I will add several extensions, but probably in separate PRs: 1. prioritize connection with mail server that was used before reboot 2. disconnect from mail servers if history request wasn't expired but failed. 3. wait some time in RequestsMessage RPC to establish connection with any mail server Currently this feature is hidden, as certain changes will be necessary in status-react. partially implements: https://github.com/status-im/status-go/issues/1285
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}
// Notify sends a non-blocking notification about new nodes.
func (ps *ConnectionManager) Notify(nodes []*enode.Node) {
ps.wg.Add(1)
go func() {
select {
case ps.notifications <- nodes:
case <-ps.quit:
}
ps.wg.Done()
}()
}
// Start subscribes to a p2p server and handles new peers and state updates for those peers.
func (ps *ConnectionManager) Start() {
ps.quit = make(chan struct{})
ps.wg.Add(1)
go func() {
state := newInternalState(ps.server, ps.connectedTarget, ps.timeoutWaitAdded)
Mail peer store and connection manager (#1295) This change implements connection manager that monitors 3 types of events: 1. update of the selected mail servers 2. disconnect from a mail server 3. errors for requesting mail history When selected mail servers provided we will try to connect with as many as possible, and later disconnect the surplus. For example if we want to connect with one mail server and 3 were selected, we try to connect with all (3), and later disconnect with 2. It will to establish connection with live mail server faster. If mail server disconnects we will choose any other mail server from the list of selected. Unless we have only one mail server. In such case we don't have any other choice and we will leave things as is. If request for history was expired we will disconnect such peer and try to find another one. We will follow same rules as described above. We will have two components that will rely on this logic: 1. requesting history If target peer is provided we will use that peer, otherwise we will request history from any selected mail server that is connected at the time of request. 2. confirmation from selected mail server Confirmation from any selected mail server will bee used to send a feedback that envelope was sent. I will add several extensions, but probably in separate PRs: 1. prioritize connection with mail server that was used before reboot 2. disconnect from mail servers if history request wasn't expired but failed. 3. wait some time in RequestsMessage RPC to establish connection with any mail server Currently this feature is hidden, as certain changes will be necessary in status-react. partially implements: https://github.com/status-im/status-go/issues/1285
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events := make(chan *p2p.PeerEvent, peerEventsBuffer)
sub := ps.server.SubscribeEvents(events)
whisperEvents := make(chan types.EnvelopeEvent, whisperEventsBuffer)
Mail peer store and connection manager (#1295) This change implements connection manager that monitors 3 types of events: 1. update of the selected mail servers 2. disconnect from a mail server 3. errors for requesting mail history When selected mail servers provided we will try to connect with as many as possible, and later disconnect the surplus. For example if we want to connect with one mail server and 3 were selected, we try to connect with all (3), and later disconnect with 2. It will to establish connection with live mail server faster. If mail server disconnects we will choose any other mail server from the list of selected. Unless we have only one mail server. In such case we don't have any other choice and we will leave things as is. If request for history was expired we will disconnect such peer and try to find another one. We will follow same rules as described above. We will have two components that will rely on this logic: 1. requesting history If target peer is provided we will use that peer, otherwise we will request history from any selected mail server that is connected at the time of request. 2. confirmation from selected mail server Confirmation from any selected mail server will bee used to send a feedback that envelope was sent. I will add several extensions, but probably in separate PRs: 1. prioritize connection with mail server that was used before reboot 2. disconnect from mail servers if history request wasn't expired but failed. 3. wait some time in RequestsMessage RPC to establish connection with any mail server Currently this feature is hidden, as certain changes will be necessary in status-react. partially implements: https://github.com/status-im/status-go/issues/1285
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whisperSub := ps.whisper.SubscribeEnvelopeEvents(whisperEvents)
requests := map[types.Hash]struct{}{}
failuresPerServer := map[types.EnodeID]int{}
defer sub.Unsubscribe()
defer whisperSub.Unsubscribe()
defer ps.wg.Done()
Mail peer store and connection manager (#1295) This change implements connection manager that monitors 3 types of events: 1. update of the selected mail servers 2. disconnect from a mail server 3. errors for requesting mail history When selected mail servers provided we will try to connect with as many as possible, and later disconnect the surplus. For example if we want to connect with one mail server and 3 were selected, we try to connect with all (3), and later disconnect with 2. It will to establish connection with live mail server faster. If mail server disconnects we will choose any other mail server from the list of selected. Unless we have only one mail server. In such case we don't have any other choice and we will leave things as is. If request for history was expired we will disconnect such peer and try to find another one. We will follow same rules as described above. We will have two components that will rely on this logic: 1. requesting history If target peer is provided we will use that peer, otherwise we will request history from any selected mail server that is connected at the time of request. 2. confirmation from selected mail server Confirmation from any selected mail server will bee used to send a feedback that envelope was sent. I will add several extensions, but probably in separate PRs: 1. prioritize connection with mail server that was used before reboot 2. disconnect from mail servers if history request wasn't expired but failed. 3. wait some time in RequestsMessage RPC to establish connection with any mail server Currently this feature is hidden, as certain changes will be necessary in status-react. partially implements: https://github.com/status-im/status-go/issues/1285
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for {
select {
case <-ps.quit:
return
case err := <-sub.Err():
log.Error("retry after error subscribing to p2p events", "error", err)
return
Mail peer store and connection manager (#1295) This change implements connection manager that monitors 3 types of events: 1. update of the selected mail servers 2. disconnect from a mail server 3. errors for requesting mail history When selected mail servers provided we will try to connect with as many as possible, and later disconnect the surplus. For example if we want to connect with one mail server and 3 were selected, we try to connect with all (3), and later disconnect with 2. It will to establish connection with live mail server faster. If mail server disconnects we will choose any other mail server from the list of selected. Unless we have only one mail server. In such case we don't have any other choice and we will leave things as is. If request for history was expired we will disconnect such peer and try to find another one. We will follow same rules as described above. We will have two components that will rely on this logic: 1. requesting history If target peer is provided we will use that peer, otherwise we will request history from any selected mail server that is connected at the time of request. 2. confirmation from selected mail server Confirmation from any selected mail server will bee used to send a feedback that envelope was sent. I will add several extensions, but probably in separate PRs: 1. prioritize connection with mail server that was used before reboot 2. disconnect from mail servers if history request wasn't expired but failed. 3. wait some time in RequestsMessage RPC to establish connection with any mail server Currently this feature is hidden, as certain changes will be necessary in status-react. partially implements: https://github.com/status-im/status-go/issues/1285
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case err := <-whisperSub.Err():
log.Error("retry after error suscribing to whisper events", "error", err)
return
Mail peer store and connection manager (#1295) This change implements connection manager that monitors 3 types of events: 1. update of the selected mail servers 2. disconnect from a mail server 3. errors for requesting mail history When selected mail servers provided we will try to connect with as many as possible, and later disconnect the surplus. For example if we want to connect with one mail server and 3 were selected, we try to connect with all (3), and later disconnect with 2. It will to establish connection with live mail server faster. If mail server disconnects we will choose any other mail server from the list of selected. Unless we have only one mail server. In such case we don't have any other choice and we will leave things as is. If request for history was expired we will disconnect such peer and try to find another one. We will follow same rules as described above. We will have two components that will rely on this logic: 1. requesting history If target peer is provided we will use that peer, otherwise we will request history from any selected mail server that is connected at the time of request. 2. confirmation from selected mail server Confirmation from any selected mail server will bee used to send a feedback that envelope was sent. I will add several extensions, but probably in separate PRs: 1. prioritize connection with mail server that was used before reboot 2. disconnect from mail servers if history request wasn't expired but failed. 3. wait some time in RequestsMessage RPC to establish connection with any mail server Currently this feature is hidden, as certain changes will be necessary in status-react. partially implements: https://github.com/status-im/status-go/issues/1285
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case newNodes := <-ps.notifications:
state.processReplacement(newNodes, events)
Mail peer store and connection manager (#1295) This change implements connection manager that monitors 3 types of events: 1. update of the selected mail servers 2. disconnect from a mail server 3. errors for requesting mail history When selected mail servers provided we will try to connect with as many as possible, and later disconnect the surplus. For example if we want to connect with one mail server and 3 were selected, we try to connect with all (3), and later disconnect with 2. It will to establish connection with live mail server faster. If mail server disconnects we will choose any other mail server from the list of selected. Unless we have only one mail server. In such case we don't have any other choice and we will leave things as is. If request for history was expired we will disconnect such peer and try to find another one. We will follow same rules as described above. We will have two components that will rely on this logic: 1. requesting history If target peer is provided we will use that peer, otherwise we will request history from any selected mail server that is connected at the time of request. 2. confirmation from selected mail server Confirmation from any selected mail server will bee used to send a feedback that envelope was sent. I will add several extensions, but probably in separate PRs: 1. prioritize connection with mail server that was used before reboot 2. disconnect from mail servers if history request wasn't expired but failed. 3. wait some time in RequestsMessage RPC to establish connection with any mail server Currently this feature is hidden, as certain changes will be necessary in status-react. partially implements: https://github.com/status-im/status-go/issues/1285
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case ev := <-events:
processPeerEvent(state, ev)
Mail peer store and connection manager (#1295) This change implements connection manager that monitors 3 types of events: 1. update of the selected mail servers 2. disconnect from a mail server 3. errors for requesting mail history When selected mail servers provided we will try to connect with as many as possible, and later disconnect the surplus. For example if we want to connect with one mail server and 3 were selected, we try to connect with all (3), and later disconnect with 2. It will to establish connection with live mail server faster. If mail server disconnects we will choose any other mail server from the list of selected. Unless we have only one mail server. In such case we don't have any other choice and we will leave things as is. If request for history was expired we will disconnect such peer and try to find another one. We will follow same rules as described above. We will have two components that will rely on this logic: 1. requesting history If target peer is provided we will use that peer, otherwise we will request history from any selected mail server that is connected at the time of request. 2. confirmation from selected mail server Confirmation from any selected mail server will bee used to send a feedback that envelope was sent. I will add several extensions, but probably in separate PRs: 1. prioritize connection with mail server that was used before reboot 2. disconnect from mail servers if history request wasn't expired but failed. 3. wait some time in RequestsMessage RPC to establish connection with any mail server Currently this feature is hidden, as certain changes will be necessary in status-react. partially implements: https://github.com/status-im/status-go/issues/1285
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case ev := <-whisperEvents:
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// TODO treat failed requests the same way as expired
Mail peer store and connection manager (#1295) This change implements connection manager that monitors 3 types of events: 1. update of the selected mail servers 2. disconnect from a mail server 3. errors for requesting mail history When selected mail servers provided we will try to connect with as many as possible, and later disconnect the surplus. For example if we want to connect with one mail server and 3 were selected, we try to connect with all (3), and later disconnect with 2. It will to establish connection with live mail server faster. If mail server disconnects we will choose any other mail server from the list of selected. Unless we have only one mail server. In such case we don't have any other choice and we will leave things as is. If request for history was expired we will disconnect such peer and try to find another one. We will follow same rules as described above. We will have two components that will rely on this logic: 1. requesting history If target peer is provided we will use that peer, otherwise we will request history from any selected mail server that is connected at the time of request. 2. confirmation from selected mail server Confirmation from any selected mail server will bee used to send a feedback that envelope was sent. I will add several extensions, but probably in separate PRs: 1. prioritize connection with mail server that was used before reboot 2. disconnect from mail servers if history request wasn't expired but failed. 3. wait some time in RequestsMessage RPC to establish connection with any mail server Currently this feature is hidden, as certain changes will be necessary in status-react. partially implements: https://github.com/status-im/status-go/issues/1285
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switch ev.Event {
case types.EventMailServerRequestSent:
Mail peer store and connection manager (#1295) This change implements connection manager that monitors 3 types of events: 1. update of the selected mail servers 2. disconnect from a mail server 3. errors for requesting mail history When selected mail servers provided we will try to connect with as many as possible, and later disconnect the surplus. For example if we want to connect with one mail server and 3 were selected, we try to connect with all (3), and later disconnect with 2. It will to establish connection with live mail server faster. If mail server disconnects we will choose any other mail server from the list of selected. Unless we have only one mail server. In such case we don't have any other choice and we will leave things as is. If request for history was expired we will disconnect such peer and try to find another one. We will follow same rules as described above. We will have two components that will rely on this logic: 1. requesting history If target peer is provided we will use that peer, otherwise we will request history from any selected mail server that is connected at the time of request. 2. confirmation from selected mail server Confirmation from any selected mail server will bee used to send a feedback that envelope was sent. I will add several extensions, but probably in separate PRs: 1. prioritize connection with mail server that was used before reboot 2. disconnect from mail servers if history request wasn't expired but failed. 3. wait some time in RequestsMessage RPC to establish connection with any mail server Currently this feature is hidden, as certain changes will be necessary in status-react. partially implements: https://github.com/status-im/status-go/issues/1285
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requests[ev.Hash] = struct{}{}
case types.EventMailServerRequestCompleted:
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// reset failures count on first success
failuresPerServer[ev.Peer] = 0
Mail peer store and connection manager (#1295) This change implements connection manager that monitors 3 types of events: 1. update of the selected mail servers 2. disconnect from a mail server 3. errors for requesting mail history When selected mail servers provided we will try to connect with as many as possible, and later disconnect the surplus. For example if we want to connect with one mail server and 3 were selected, we try to connect with all (3), and later disconnect with 2. It will to establish connection with live mail server faster. If mail server disconnects we will choose any other mail server from the list of selected. Unless we have only one mail server. In such case we don't have any other choice and we will leave things as is. If request for history was expired we will disconnect such peer and try to find another one. We will follow same rules as described above. We will have two components that will rely on this logic: 1. requesting history If target peer is provided we will use that peer, otherwise we will request history from any selected mail server that is connected at the time of request. 2. confirmation from selected mail server Confirmation from any selected mail server will bee used to send a feedback that envelope was sent. I will add several extensions, but probably in separate PRs: 1. prioritize connection with mail server that was used before reboot 2. disconnect from mail servers if history request wasn't expired but failed. 3. wait some time in RequestsMessage RPC to establish connection with any mail server Currently this feature is hidden, as certain changes will be necessary in status-react. partially implements: https://github.com/status-im/status-go/issues/1285
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delete(requests, ev.Hash)
case types.EventMailServerRequestExpired:
Mail peer store and connection manager (#1295) This change implements connection manager that monitors 3 types of events: 1. update of the selected mail servers 2. disconnect from a mail server 3. errors for requesting mail history When selected mail servers provided we will try to connect with as many as possible, and later disconnect the surplus. For example if we want to connect with one mail server and 3 were selected, we try to connect with all (3), and later disconnect with 2. It will to establish connection with live mail server faster. If mail server disconnects we will choose any other mail server from the list of selected. Unless we have only one mail server. In such case we don't have any other choice and we will leave things as is. If request for history was expired we will disconnect such peer and try to find another one. We will follow same rules as described above. We will have two components that will rely on this logic: 1. requesting history If target peer is provided we will use that peer, otherwise we will request history from any selected mail server that is connected at the time of request. 2. confirmation from selected mail server Confirmation from any selected mail server will bee used to send a feedback that envelope was sent. I will add several extensions, but probably in separate PRs: 1. prioritize connection with mail server that was used before reboot 2. disconnect from mail servers if history request wasn't expired but failed. 3. wait some time in RequestsMessage RPC to establish connection with any mail server Currently this feature is hidden, as certain changes will be necessary in status-react. partially implements: https://github.com/status-im/status-go/issues/1285
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_, exist := requests[ev.Hash]
if !exist {
continue
}
2019-01-21 14:00:10 +00:00
failuresPerServer[ev.Peer]++
2019-06-12 09:16:00 +00:00
log.Debug("request to a mail server expired, disconnect a peer", "address", ev.Peer)
2019-01-21 14:00:10 +00:00
if failuresPerServer[ev.Peer] >= ps.maxFailures {
state.nodeDisconnected(ev.Peer)
}
Mail peer store and connection manager (#1295) This change implements connection manager that monitors 3 types of events: 1. update of the selected mail servers 2. disconnect from a mail server 3. errors for requesting mail history When selected mail servers provided we will try to connect with as many as possible, and later disconnect the surplus. For example if we want to connect with one mail server and 3 were selected, we try to connect with all (3), and later disconnect with 2. It will to establish connection with live mail server faster. If mail server disconnects we will choose any other mail server from the list of selected. Unless we have only one mail server. In such case we don't have any other choice and we will leave things as is. If request for history was expired we will disconnect such peer and try to find another one. We will follow same rules as described above. We will have two components that will rely on this logic: 1. requesting history If target peer is provided we will use that peer, otherwise we will request history from any selected mail server that is connected at the time of request. 2. confirmation from selected mail server Confirmation from any selected mail server will bee used to send a feedback that envelope was sent. I will add several extensions, but probably in separate PRs: 1. prioritize connection with mail server that was used before reboot 2. disconnect from mail servers if history request wasn't expired but failed. 3. wait some time in RequestsMessage RPC to establish connection with any mail server Currently this feature is hidden, as certain changes will be necessary in status-react. partially implements: https://github.com/status-im/status-go/issues/1285
2018-12-05 13:57:05 +00:00
}
}
}
}()
}
// Stop gracefully closes all background goroutines and waits until they finish.
func (ps *ConnectionManager) Stop() {
if ps.quit == nil {
return
}
select {
case <-ps.quit:
return
default:
}
close(ps.quit)
ps.wg.Wait()
ps.quit = nil
}
func (state *internalState) processReplacement(newNodes []*enode.Node, events <-chan *p2p.PeerEvent) {
replacement := map[types.EnodeID]*enode.Node{}
for _, n := range newNodes {
replacement[types.EnodeID(n.ID())] = n
}
state.replaceNodes(replacement)
if state.ReachedTarget() {
log.Debug("already connected with required target", "target", state.target)
return
}
if state.timeout != 0 {
log.Debug("waiting defined timeout to establish connections",
"timeout", state.timeout, "target", state.target)
timer := time.NewTimer(state.timeout)
waitForConnections(state, timer.C, events)
timer.Stop()
}
}
func newInternalState(srv PeerAdderRemover, target int, timeout time.Duration) *internalState {
return &internalState{
options: options{target: target, timeout: timeout},
srv: srv,
connected: map[types.EnodeID]struct{}{},
currentNodes: map[types.EnodeID]*enode.Node{},
}
}
type options struct {
target int
timeout time.Duration
}
type internalState struct {
options
srv PeerAdderRemover
connected map[types.EnodeID]struct{}
currentNodes map[types.EnodeID]*enode.Node
}
func (state *internalState) ReachedTarget() bool {
return len(state.connected) >= state.target
}
func (state *internalState) replaceNodes(new map[types.EnodeID]*enode.Node) {
for nid, n := range state.currentNodes {
Mail peer store and connection manager (#1295) This change implements connection manager that monitors 3 types of events: 1. update of the selected mail servers 2. disconnect from a mail server 3. errors for requesting mail history When selected mail servers provided we will try to connect with as many as possible, and later disconnect the surplus. For example if we want to connect with one mail server and 3 were selected, we try to connect with all (3), and later disconnect with 2. It will to establish connection with live mail server faster. If mail server disconnects we will choose any other mail server from the list of selected. Unless we have only one mail server. In such case we don't have any other choice and we will leave things as is. If request for history was expired we will disconnect such peer and try to find another one. We will follow same rules as described above. We will have two components that will rely on this logic: 1. requesting history If target peer is provided we will use that peer, otherwise we will request history from any selected mail server that is connected at the time of request. 2. confirmation from selected mail server Confirmation from any selected mail server will bee used to send a feedback that envelope was sent. I will add several extensions, but probably in separate PRs: 1. prioritize connection with mail server that was used before reboot 2. disconnect from mail servers if history request wasn't expired but failed. 3. wait some time in RequestsMessage RPC to establish connection with any mail server Currently this feature is hidden, as certain changes will be necessary in status-react. partially implements: https://github.com/status-im/status-go/issues/1285
2018-12-05 13:57:05 +00:00
if _, exist := new[nid]; !exist {
delete(state.connected, nid)
state.srv.RemovePeer(n)
Mail peer store and connection manager (#1295) This change implements connection manager that monitors 3 types of events: 1. update of the selected mail servers 2. disconnect from a mail server 3. errors for requesting mail history When selected mail servers provided we will try to connect with as many as possible, and later disconnect the surplus. For example if we want to connect with one mail server and 3 were selected, we try to connect with all (3), and later disconnect with 2. It will to establish connection with live mail server faster. If mail server disconnects we will choose any other mail server from the list of selected. Unless we have only one mail server. In such case we don't have any other choice and we will leave things as is. If request for history was expired we will disconnect such peer and try to find another one. We will follow same rules as described above. We will have two components that will rely on this logic: 1. requesting history If target peer is provided we will use that peer, otherwise we will request history from any selected mail server that is connected at the time of request. 2. confirmation from selected mail server Confirmation from any selected mail server will bee used to send a feedback that envelope was sent. I will add several extensions, but probably in separate PRs: 1. prioritize connection with mail server that was used before reboot 2. disconnect from mail servers if history request wasn't expired but failed. 3. wait some time in RequestsMessage RPC to establish connection with any mail server Currently this feature is hidden, as certain changes will be necessary in status-react. partially implements: https://github.com/status-im/status-go/issues/1285
2018-12-05 13:57:05 +00:00
}
}
if !state.ReachedTarget() {
Mail peer store and connection manager (#1295) This change implements connection manager that monitors 3 types of events: 1. update of the selected mail servers 2. disconnect from a mail server 3. errors for requesting mail history When selected mail servers provided we will try to connect with as many as possible, and later disconnect the surplus. For example if we want to connect with one mail server and 3 were selected, we try to connect with all (3), and later disconnect with 2. It will to establish connection with live mail server faster. If mail server disconnects we will choose any other mail server from the list of selected. Unless we have only one mail server. In such case we don't have any other choice and we will leave things as is. If request for history was expired we will disconnect such peer and try to find another one. We will follow same rules as described above. We will have two components that will rely on this logic: 1. requesting history If target peer is provided we will use that peer, otherwise we will request history from any selected mail server that is connected at the time of request. 2. confirmation from selected mail server Confirmation from any selected mail server will bee used to send a feedback that envelope was sent. I will add several extensions, but probably in separate PRs: 1. prioritize connection with mail server that was used before reboot 2. disconnect from mail servers if history request wasn't expired but failed. 3. wait some time in RequestsMessage RPC to establish connection with any mail server Currently this feature is hidden, as certain changes will be necessary in status-react. partially implements: https://github.com/status-im/status-go/issues/1285
2018-12-05 13:57:05 +00:00
for _, n := range new {
state.srv.AddPeer(n)
Mail peer store and connection manager (#1295) This change implements connection manager that monitors 3 types of events: 1. update of the selected mail servers 2. disconnect from a mail server 3. errors for requesting mail history When selected mail servers provided we will try to connect with as many as possible, and later disconnect the surplus. For example if we want to connect with one mail server and 3 were selected, we try to connect with all (3), and later disconnect with 2. It will to establish connection with live mail server faster. If mail server disconnects we will choose any other mail server from the list of selected. Unless we have only one mail server. In such case we don't have any other choice and we will leave things as is. If request for history was expired we will disconnect such peer and try to find another one. We will follow same rules as described above. We will have two components that will rely on this logic: 1. requesting history If target peer is provided we will use that peer, otherwise we will request history from any selected mail server that is connected at the time of request. 2. confirmation from selected mail server Confirmation from any selected mail server will bee used to send a feedback that envelope was sent. I will add several extensions, but probably in separate PRs: 1. prioritize connection with mail server that was used before reboot 2. disconnect from mail servers if history request wasn't expired but failed. 3. wait some time in RequestsMessage RPC to establish connection with any mail server Currently this feature is hidden, as certain changes will be necessary in status-react. partially implements: https://github.com/status-im/status-go/issues/1285
2018-12-05 13:57:05 +00:00
}
}
state.currentNodes = new
Mail peer store and connection manager (#1295) This change implements connection manager that monitors 3 types of events: 1. update of the selected mail servers 2. disconnect from a mail server 3. errors for requesting mail history When selected mail servers provided we will try to connect with as many as possible, and later disconnect the surplus. For example if we want to connect with one mail server and 3 were selected, we try to connect with all (3), and later disconnect with 2. It will to establish connection with live mail server faster. If mail server disconnects we will choose any other mail server from the list of selected. Unless we have only one mail server. In such case we don't have any other choice and we will leave things as is. If request for history was expired we will disconnect such peer and try to find another one. We will follow same rules as described above. We will have two components that will rely on this logic: 1. requesting history If target peer is provided we will use that peer, otherwise we will request history from any selected mail server that is connected at the time of request. 2. confirmation from selected mail server Confirmation from any selected mail server will bee used to send a feedback that envelope was sent. I will add several extensions, but probably in separate PRs: 1. prioritize connection with mail server that was used before reboot 2. disconnect from mail servers if history request wasn't expired but failed. 3. wait some time in RequestsMessage RPC to establish connection with any mail server Currently this feature is hidden, as certain changes will be necessary in status-react. partially implements: https://github.com/status-im/status-go/issues/1285
2018-12-05 13:57:05 +00:00
}
func (state *internalState) nodeAdded(peer types.EnodeID) {
n, exist := state.currentNodes[peer]
Mail peer store and connection manager (#1295) This change implements connection manager that monitors 3 types of events: 1. update of the selected mail servers 2. disconnect from a mail server 3. errors for requesting mail history When selected mail servers provided we will try to connect with as many as possible, and later disconnect the surplus. For example if we want to connect with one mail server and 3 were selected, we try to connect with all (3), and later disconnect with 2. It will to establish connection with live mail server faster. If mail server disconnects we will choose any other mail server from the list of selected. Unless we have only one mail server. In such case we don't have any other choice and we will leave things as is. If request for history was expired we will disconnect such peer and try to find another one. We will follow same rules as described above. We will have two components that will rely on this logic: 1. requesting history If target peer is provided we will use that peer, otherwise we will request history from any selected mail server that is connected at the time of request. 2. confirmation from selected mail server Confirmation from any selected mail server will bee used to send a feedback that envelope was sent. I will add several extensions, but probably in separate PRs: 1. prioritize connection with mail server that was used before reboot 2. disconnect from mail servers if history request wasn't expired but failed. 3. wait some time in RequestsMessage RPC to establish connection with any mail server Currently this feature is hidden, as certain changes will be necessary in status-react. partially implements: https://github.com/status-im/status-go/issues/1285
2018-12-05 13:57:05 +00:00
if !exist {
return
}
if state.ReachedTarget() {
state.srv.RemovePeer(n)
Mail peer store and connection manager (#1295) This change implements connection manager that monitors 3 types of events: 1. update of the selected mail servers 2. disconnect from a mail server 3. errors for requesting mail history When selected mail servers provided we will try to connect with as many as possible, and later disconnect the surplus. For example if we want to connect with one mail server and 3 were selected, we try to connect with all (3), and later disconnect with 2. It will to establish connection with live mail server faster. If mail server disconnects we will choose any other mail server from the list of selected. Unless we have only one mail server. In such case we don't have any other choice and we will leave things as is. If request for history was expired we will disconnect such peer and try to find another one. We will follow same rules as described above. We will have two components that will rely on this logic: 1. requesting history If target peer is provided we will use that peer, otherwise we will request history from any selected mail server that is connected at the time of request. 2. confirmation from selected mail server Confirmation from any selected mail server will bee used to send a feedback that envelope was sent. I will add several extensions, but probably in separate PRs: 1. prioritize connection with mail server that was used before reboot 2. disconnect from mail servers if history request wasn't expired but failed. 3. wait some time in RequestsMessage RPC to establish connection with any mail server Currently this feature is hidden, as certain changes will be necessary in status-react. partially implements: https://github.com/status-im/status-go/issues/1285
2018-12-05 13:57:05 +00:00
} else {
state.connected[types.EnodeID(n.ID())] = struct{}{}
Mail peer store and connection manager (#1295) This change implements connection manager that monitors 3 types of events: 1. update of the selected mail servers 2. disconnect from a mail server 3. errors for requesting mail history When selected mail servers provided we will try to connect with as many as possible, and later disconnect the surplus. For example if we want to connect with one mail server and 3 were selected, we try to connect with all (3), and later disconnect with 2. It will to establish connection with live mail server faster. If mail server disconnects we will choose any other mail server from the list of selected. Unless we have only one mail server. In such case we don't have any other choice and we will leave things as is. If request for history was expired we will disconnect such peer and try to find another one. We will follow same rules as described above. We will have two components that will rely on this logic: 1. requesting history If target peer is provided we will use that peer, otherwise we will request history from any selected mail server that is connected at the time of request. 2. confirmation from selected mail server Confirmation from any selected mail server will bee used to send a feedback that envelope was sent. I will add several extensions, but probably in separate PRs: 1. prioritize connection with mail server that was used before reboot 2. disconnect from mail servers if history request wasn't expired but failed. 3. wait some time in RequestsMessage RPC to establish connection with any mail server Currently this feature is hidden, as certain changes will be necessary in status-react. partially implements: https://github.com/status-im/status-go/issues/1285
2018-12-05 13:57:05 +00:00
}
}
func (state *internalState) nodeDisconnected(peer types.EnodeID) {
n, exist := state.currentNodes[peer] // unrelated event
Mail peer store and connection manager (#1295) This change implements connection manager that monitors 3 types of events: 1. update of the selected mail servers 2. disconnect from a mail server 3. errors for requesting mail history When selected mail servers provided we will try to connect with as many as possible, and later disconnect the surplus. For example if we want to connect with one mail server and 3 were selected, we try to connect with all (3), and later disconnect with 2. It will to establish connection with live mail server faster. If mail server disconnects we will choose any other mail server from the list of selected. Unless we have only one mail server. In such case we don't have any other choice and we will leave things as is. If request for history was expired we will disconnect such peer and try to find another one. We will follow same rules as described above. We will have two components that will rely on this logic: 1. requesting history If target peer is provided we will use that peer, otherwise we will request history from any selected mail server that is connected at the time of request. 2. confirmation from selected mail server Confirmation from any selected mail server will bee used to send a feedback that envelope was sent. I will add several extensions, but probably in separate PRs: 1. prioritize connection with mail server that was used before reboot 2. disconnect from mail servers if history request wasn't expired but failed. 3. wait some time in RequestsMessage RPC to establish connection with any mail server Currently this feature is hidden, as certain changes will be necessary in status-react. partially implements: https://github.com/status-im/status-go/issues/1285
2018-12-05 13:57:05 +00:00
if !exist {
return
}
_, exist = state.connected[peer] // check if already disconnected
Mail peer store and connection manager (#1295) This change implements connection manager that monitors 3 types of events: 1. update of the selected mail servers 2. disconnect from a mail server 3. errors for requesting mail history When selected mail servers provided we will try to connect with as many as possible, and later disconnect the surplus. For example if we want to connect with one mail server and 3 were selected, we try to connect with all (3), and later disconnect with 2. It will to establish connection with live mail server faster. If mail server disconnects we will choose any other mail server from the list of selected. Unless we have only one mail server. In such case we don't have any other choice and we will leave things as is. If request for history was expired we will disconnect such peer and try to find another one. We will follow same rules as described above. We will have two components that will rely on this logic: 1. requesting history If target peer is provided we will use that peer, otherwise we will request history from any selected mail server that is connected at the time of request. 2. confirmation from selected mail server Confirmation from any selected mail server will bee used to send a feedback that envelope was sent. I will add several extensions, but probably in separate PRs: 1. prioritize connection with mail server that was used before reboot 2. disconnect from mail servers if history request wasn't expired but failed. 3. wait some time in RequestsMessage RPC to establish connection with any mail server Currently this feature is hidden, as certain changes will be necessary in status-react. partially implements: https://github.com/status-im/status-go/issues/1285
2018-12-05 13:57:05 +00:00
if !exist {
return
}
if len(state.currentNodes) == 1 { // keep node connected if we don't have another choice
Mail peer store and connection manager (#1295) This change implements connection manager that monitors 3 types of events: 1. update of the selected mail servers 2. disconnect from a mail server 3. errors for requesting mail history When selected mail servers provided we will try to connect with as many as possible, and later disconnect the surplus. For example if we want to connect with one mail server and 3 were selected, we try to connect with all (3), and later disconnect with 2. It will to establish connection with live mail server faster. If mail server disconnects we will choose any other mail server from the list of selected. Unless we have only one mail server. In such case we don't have any other choice and we will leave things as is. If request for history was expired we will disconnect such peer and try to find another one. We will follow same rules as described above. We will have two components that will rely on this logic: 1. requesting history If target peer is provided we will use that peer, otherwise we will request history from any selected mail server that is connected at the time of request. 2. confirmation from selected mail server Confirmation from any selected mail server will bee used to send a feedback that envelope was sent. I will add several extensions, but probably in separate PRs: 1. prioritize connection with mail server that was used before reboot 2. disconnect from mail servers if history request wasn't expired but failed. 3. wait some time in RequestsMessage RPC to establish connection with any mail server Currently this feature is hidden, as certain changes will be necessary in status-react. partially implements: https://github.com/status-im/status-go/issues/1285
2018-12-05 13:57:05 +00:00
return
}
state.srv.RemovePeer(n) // remove peer permanently, otherwise p2p.Server will try to reconnect
delete(state.connected, peer)
if !state.ReachedTarget() { // try to connect with any other selected (but not connected) node
for nid, n := range state.currentNodes {
_, exist := state.connected[nid]
Mail peer store and connection manager (#1295) This change implements connection manager that monitors 3 types of events: 1. update of the selected mail servers 2. disconnect from a mail server 3. errors for requesting mail history When selected mail servers provided we will try to connect with as many as possible, and later disconnect the surplus. For example if we want to connect with one mail server and 3 were selected, we try to connect with all (3), and later disconnect with 2. It will to establish connection with live mail server faster. If mail server disconnects we will choose any other mail server from the list of selected. Unless we have only one mail server. In such case we don't have any other choice and we will leave things as is. If request for history was expired we will disconnect such peer and try to find another one. We will follow same rules as described above. We will have two components that will rely on this logic: 1. requesting history If target peer is provided we will use that peer, otherwise we will request history from any selected mail server that is connected at the time of request. 2. confirmation from selected mail server Confirmation from any selected mail server will bee used to send a feedback that envelope was sent. I will add several extensions, but probably in separate PRs: 1. prioritize connection with mail server that was used before reboot 2. disconnect from mail servers if history request wasn't expired but failed. 3. wait some time in RequestsMessage RPC to establish connection with any mail server Currently this feature is hidden, as certain changes will be necessary in status-react. partially implements: https://github.com/status-im/status-go/issues/1285
2018-12-05 13:57:05 +00:00
if exist || peer == nid {
continue
}
state.srv.AddPeer(n)
}
}
}
func processPeerEvent(state *internalState, ev *p2p.PeerEvent) {
switch ev.Type {
case p2p.PeerEventTypeAdd:
log.Debug("connected to a mailserver", "address", ev.Peer)
state.nodeAdded(types.EnodeID(ev.Peer))
case p2p.PeerEventTypeDrop:
log.Debug("mailserver disconnected", "address", ev.Peer)
state.nodeDisconnected(types.EnodeID(ev.Peer))
}
}
func waitForConnections(state *internalState, timeout <-chan time.Time, events <-chan *p2p.PeerEvent) {
for {
select {
case ev := <-events:
processPeerEvent(state, ev)
if state.ReachedTarget() {
return
}
case <-timeout:
return
Mail peer store and connection manager (#1295) This change implements connection manager that monitors 3 types of events: 1. update of the selected mail servers 2. disconnect from a mail server 3. errors for requesting mail history When selected mail servers provided we will try to connect with as many as possible, and later disconnect the surplus. For example if we want to connect with one mail server and 3 were selected, we try to connect with all (3), and later disconnect with 2. It will to establish connection with live mail server faster. If mail server disconnects we will choose any other mail server from the list of selected. Unless we have only one mail server. In such case we don't have any other choice and we will leave things as is. If request for history was expired we will disconnect such peer and try to find another one. We will follow same rules as described above. We will have two components that will rely on this logic: 1. requesting history If target peer is provided we will use that peer, otherwise we will request history from any selected mail server that is connected at the time of request. 2. confirmation from selected mail server Confirmation from any selected mail server will bee used to send a feedback that envelope was sent. I will add several extensions, but probably in separate PRs: 1. prioritize connection with mail server that was used before reboot 2. disconnect from mail servers if history request wasn't expired but failed. 3. wait some time in RequestsMessage RPC to establish connection with any mail server Currently this feature is hidden, as certain changes will be necessary in status-react. partially implements: https://github.com/status-im/status-go/issues/1285
2018-12-05 13:57:05 +00:00
}
}
Mail peer store and connection manager (#1295) This change implements connection manager that monitors 3 types of events: 1. update of the selected mail servers 2. disconnect from a mail server 3. errors for requesting mail history When selected mail servers provided we will try to connect with as many as possible, and later disconnect the surplus. For example if we want to connect with one mail server and 3 were selected, we try to connect with all (3), and later disconnect with 2. It will to establish connection with live mail server faster. If mail server disconnects we will choose any other mail server from the list of selected. Unless we have only one mail server. In such case we don't have any other choice and we will leave things as is. If request for history was expired we will disconnect such peer and try to find another one. We will follow same rules as described above. We will have two components that will rely on this logic: 1. requesting history If target peer is provided we will use that peer, otherwise we will request history from any selected mail server that is connected at the time of request. 2. confirmation from selected mail server Confirmation from any selected mail server will bee used to send a feedback that envelope was sent. I will add several extensions, but probably in separate PRs: 1. prioritize connection with mail server that was used before reboot 2. disconnect from mail servers if history request wasn't expired but failed. 3. wait some time in RequestsMessage RPC to establish connection with any mail server Currently this feature is hidden, as certain changes will be necessary in status-react. partially implements: https://github.com/status-im/status-go/issues/1285
2018-12-05 13:57:05 +00:00
}