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dns_filter: Generate responses to queries (#11074)

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Signed-off-by: Alvin Baptiste <alvinsb@gmail.com>

Mirrored from https://github.com/envoyproxy/envoy @ c8c7d1a3116728b1d2eee9f19cd5de7dec736cdf
master-ci-test
data-plane-api(CircleCI) 5 years ago
parent 9c48824ae4
commit 6acb3d85ab
2 changed files with 42 additions and 48 deletions
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  1. 45
      envoy/data/dns/v3/dns_table.proto
  2. 45
      envoy/data/dns/v4alpha/dns_table.proto

45
envoy/data/dns/v3/dns_table.proto
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@ -28,22 +28,19 @@ message DnsTable {
option (udpa.annotations.versioning).previous_message_type =
"envoy.data.dns.v2alpha.DnsTable.AddressList";
// This field contains a well formed IP address that is returned
// in the answer for a name query. The address field can be an
// IPv4 or IPv6 address. Address family detection is done automatically
// when Envoy parses the string. Since this field is repeated,
// Envoy will return one randomly chosen entry from this list in the
// DNS response. The random index will vary per query so that we prevent
// clients pinning on a single address for a configured domain
// This field contains a well formed IP address that is returned in the answer for a
// name query. The address field can be an IPv4 or IPv6 address. Address family
// detection is done automatically when Envoy parses the string. Since this field is
// repeated, Envoy will return as many entries from this list in the DNS response while
// keeping the response under 512 bytes
repeated string address = 1 [(validate.rules).repeated = {
min_items: 1
items {string {min_len: 3}}
}];
}
// This message type is extensible and can contain a list of addresses
// or dictate some other method for resolving the addresses for an
// endpoint
// This message type is extensible and can contain a list of addresses, clusters or
// dictate a different method for resolving the addresses for an endpoint
message DnsEndpoint {
option (udpa.annotations.versioning).previous_message_type =
"envoy.data.dns.v2alpha.DnsTable.DnsEndpoint";
@ -52,6 +49,8 @@ message DnsTable {
option (validate.required) = true;
AddressList address_list = 1;
string cluster_name = 2;
}
}
@ -59,27 +58,25 @@ message DnsTable {
option (udpa.annotations.versioning).previous_message_type =
"envoy.data.dns.v2alpha.DnsTable.DnsVirtualDomain";
// The domain name for which Envoy will respond to query requests
// A domain name for which Envoy will respond to query requests
string name = 1 [(validate.rules).string = {min_len: 2 well_known_regex: HTTP_HEADER_NAME}];
// The configuration containing the method to determine the address
// of this endpoint
// The configuration containing the method to determine the address of this endpoint
DnsEndpoint endpoint = 2;
// Sets the TTL in dns answers from Envoy returned to the client
google.protobuf.Duration answer_ttl = 3 [(validate.rules).duration = {gt {}}];
// Sets the TTL in DNS answers from Envoy returned to the client. The default TTL is 300s
google.protobuf.Duration answer_ttl = 3 [(validate.rules).duration = {gte {seconds: 60}}];
}
// Control how many times envoy makes an attempt to forward a query to
// an external server
uint32 external_retry_count = 1;
// Control how many times Envoy makes an attempt to forward a query to an external DNS server
uint32 external_retry_count = 1 [(validate.rules).uint32 = {lte: 3}];
// Fully qualified domain names for which Envoy will respond to queries
repeated DnsVirtualDomain virtual_domains = 2 [(validate.rules).repeated = {min_items: 1}];
// Fully qualified domain names for which Envoy will respond to DNS queries. By leaving this
// list empty, Envoy will forward all queries to external resolvers
repeated DnsVirtualDomain virtual_domains = 2;
// This field serves to help Envoy determine whether it can authoritatively
// answer a query for a name matching a suffix in this list. If the query
// name does not match a suffix in this list, Envoy will forward
// the query to an upstream DNS server
// This field serves to help Envoy determine whether it can authoritatively answer a query
// for a name matching a suffix in this list. If the query name does not match a suffix in
// this list, Envoy will forward the query to an upstream DNS server
repeated type.matcher.v3.StringMatcher known_suffixes = 3;
}

45
envoy/data/dns/v4alpha/dns_table.proto
Unescape View File

@ -28,22 +28,19 @@ message DnsTable {
option (udpa.annotations.versioning).previous_message_type =
"envoy.data.dns.v3.DnsTable.AddressList";
// This field contains a well formed IP address that is returned
// in the answer for a name query. The address field can be an
// IPv4 or IPv6 address. Address family detection is done automatically
// when Envoy parses the string. Since this field is repeated,
// Envoy will return one randomly chosen entry from this list in the
// DNS response. The random index will vary per query so that we prevent
// clients pinning on a single address for a configured domain
// This field contains a well formed IP address that is returned in the answer for a
// name query. The address field can be an IPv4 or IPv6 address. Address family
// detection is done automatically when Envoy parses the string. Since this field is
// repeated, Envoy will return as many entries from this list in the DNS response while
// keeping the response under 512 bytes
repeated string address = 1 [(validate.rules).repeated = {
min_items: 1
items {string {min_len: 3}}
}];
}
// This message type is extensible and can contain a list of addresses
// or dictate some other method for resolving the addresses for an
// endpoint
// This message type is extensible and can contain a list of addresses, clusters or
// dictate a different method for resolving the addresses for an endpoint
message DnsEndpoint {
option (udpa.annotations.versioning).previous_message_type =
"envoy.data.dns.v3.DnsTable.DnsEndpoint";
@ -52,6 +49,8 @@ message DnsTable {
option (validate.required) = true;
AddressList address_list = 1;
string cluster_name = 2;
}
}
@ -59,27 +58,25 @@ message DnsTable {
option (udpa.annotations.versioning).previous_message_type =
"envoy.data.dns.v3.DnsTable.DnsVirtualDomain";
// The domain name for which Envoy will respond to query requests
// A domain name for which Envoy will respond to query requests
string name = 1 [(validate.rules).string = {min_len: 2 well_known_regex: HTTP_HEADER_NAME}];
// The configuration containing the method to determine the address
// of this endpoint
// The configuration containing the method to determine the address of this endpoint
DnsEndpoint endpoint = 2;
// Sets the TTL in dns answers from Envoy returned to the client
google.protobuf.Duration answer_ttl = 3 [(validate.rules).duration = {gt {}}];
// Sets the TTL in DNS answers from Envoy returned to the client. The default TTL is 300s
google.protobuf.Duration answer_ttl = 3 [(validate.rules).duration = {gte {seconds: 60}}];
}
// Control how many times envoy makes an attempt to forward a query to
// an external server
uint32 external_retry_count = 1;
// Control how many times Envoy makes an attempt to forward a query to an external DNS server
uint32 external_retry_count = 1 [(validate.rules).uint32 = {lte: 3}];
// Fully qualified domain names for which Envoy will respond to queries
repeated DnsVirtualDomain virtual_domains = 2 [(validate.rules).repeated = {min_items: 1}];
// Fully qualified domain names for which Envoy will respond to DNS queries. By leaving this
// list empty, Envoy will forward all queries to external resolvers
repeated DnsVirtualDomain virtual_domains = 2;
// This field serves to help Envoy determine whether it can authoritatively
// answer a query for a name matching a suffix in this list. If the query
// name does not match a suffix in this list, Envoy will forward
// the query to an upstream DNS server
// This field serves to help Envoy determine whether it can authoritatively answer a query
// for a name matching a suffix in this list. If the query name does not match a suffix in
// this list, Envoy will forward the query to an upstream DNS server
repeated type.matcher.v4alpha.StringMatcher known_suffixes = 3;
}

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