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構成
このプラグインはDBレスモードに対応しています。
互換性のあるプロトコル
Request Calloutプラグインは以下のプロトコルに対応しています:
grpc
, grpcs
, http
, https
パラメータ
このプラグインの設定で使用できるすべてのパラメータのリストは次のとおりです。
-
name or plugin
string requiredプラグイン名。この場合は
request-callout
。- Kong Admin API、Kong Konnect API、宣言型構成、または decK ファイルを使用する場合、フィールドは
name
です。 - Kubernetes で KongPlugin オブジェクトを使用する場合、フィールドは
plugin
です。
- Kong Admin API、Kong Konnect API、宣言型構成、または decK ファイルを使用する場合、フィールドは
-
instance_name
stringプラグインのインスタンスを識別するための任意のカスタム名 (例:
request-callout_my-service
。インスタンス名はKong ManagerとKonnectに表示されるので、 例えば複数のサービスで同じプラグインを複数のコンテキストで実行する場合に便利です。また、Kong Admin API経由で特定のプラグインインスタンスに アクセスするためにも使用できます。
インスタンス名は、次のコンテキスト内で一意である必要があります。
- Kong Gateway Enterpriseのワークスペース内
- Konnectのコントロールプレーン(CP)またはコントロールプレーン(CP)グループ内
- Kong Gateway (OSS)の全世界
-
service.name or service.id
stringプラグインが対象とするサービス名または ID。最上位の
/plugins
エンドポイント. からプラグインをサービスに追加する場合は、これらのパラメータのいずれかを設定してください/services/{serviceName|Id}/plugins
を使用する場合は必要ありません。 -
route.name or route.id
stringプラグインがターゲットとするルート名または ID。最上位の
/plugins
エンドポイント. を通るルートにプラグインを追加する場合は、これらのパラメータのいずれかを設定してください/routes/{routeName|Id}/plugins
を使用する場合は必要ありません。 -
consumer.name or consumer.id
stringプラグインがターゲットとするコンシューマーの名前または ID。 最上位の
/plugins
エンドポイント. からコンシューマーにプラグインを追加する場合は、これらのパラメーターのいずれかを設定してください/consumers/{consumerName|Id}/plugins
を使用する場合は必要ありません。 -
consumer_group.name or consumer_group.id
stringプラグインが対象とするコンシューマグループの名前または ID。 設定されている場合、プラグインは指定されたグループが認証されているリクエストに対してのみアクティブになります
/plugins
エンドポイント./consumer_groups/{consumerGroupName|Id}/plugins
を使用する場合は必要ありません。 -
enabled
boolean default:true
このプラグインが適用されるかどうか。
-
config
record required-
callouts
array of typerecord
requiredA collection of callout objects, where each object represents an HTTPrequest made in the context of a proxy request.
-
name
string requiredA string identifier for a callout. A callout object is referenceablevia its name in the kong.ctx.shared.callouts.
-
depends_on
array of typestring
requiredAn array of callout names the current callout depends on.This dependency determines the callout execution order.
-
request
record requiredThe customizations for the callout request.
-
url
string required referenceableThe URL that will be requested.
-
method
string required default:GET
matches:^%u+$
The HTTP method that will be requested.
-
http_opts
record requiredHTTP connection parameters.
-
ssl_verify
boolean default:false
If set to true, verifies the validity of the server SSL certificate. If setting this parameter, also configure
lua_ssl_trusted_certificate
inkong.conf
to specify the CA (or server) certificate used by your Redis server. You may also need to configurelua_ssl_verify_depth
accordingly.
-
ssl_server_name
stringThe SNI used in the callout request. Defaults to host if omitted.
-
timeouts
recordSocket timeouts in milliseconds. All or none must be set.
-
connect
integer between:0
2147483646
The socket connect timeout.
-
write
integer between:0
2147483646
The socket write timeout.
-
read
integer between:0
2147483646
The socket read timeout.
-
-
proxy
recordProxy settings.
-
auth_username
string referenceableThe username to authenticate with, if the forward proxy is protected by basic authentication.
-
auth_password
string referenceableThe password to authenticate with, if the forward proxy is protected by basic authentication.
-
https_proxy
stringThe HTTPS proxy URL. This proxy server will be used for HTTPS requests.
-
http_proxy
stringThe HTTP proxy URL. This proxy server will be used for HTTP requests.
-
-
-
query
record requiredCallout request query param customizations.
-
forward
boolean default:false
If true, forwards the incoming request’s query params to the callout request.
-
custom
mapThe custom query params to be added in the callout HTTP request.Values can contain Lua expressions in the form $(some_lua_code).
-
-
headers
record requiredCallout request header customizations.
-
forward
boolean default:false
If true, forwards the incoming request’s headers to the callout request.
-
custom
mapThe custom headers to be added in the callout HTTP request.Values can contain Lua expressions in the form $(some_lua_code).
-
-
body
record requiredCallout request body customizations.
-
forward
boolean default:false
If true, forwards the incoming request’s body to the callout request.
-
decode
boolean default:false
If true, decodes the request’s body to make it available for customizations.
-
custom
mapThe custom body fields to be added in the callout HTTP request.Values can contain Lua expressions in the form $(some_lua_code).
-
-
error
record requiredThe error handling policy the plugin will apply to TCP and HTTP errors.
-
on_error
string default:fail
Must be one of:retry
,fail
,continue
-
retries
integer default:2
The number of retries the plugin will attempt on TCP and HTTP errors if
on_error
is set toretry
.
-
http_statuses
array of typeinteger
The list of HTTP status codes considered errors under the error handling policy.
-
error_response_code
integer default:400
The error code to respond with if
on_error
isfail
or ifretries
is achieved.
-
error_response_msg
string default:service callout error
The error mesasge to respond with if
on_error
isfail
or ifretries
is achieved.Templating with Lua expressions is supported.
-
-
by_lua
stringLua code that executes before the callout request is made.Standard Lua sandboxing restrictions apply.
-
-
response
record requiredConfigurations of callout response handling.
-
headers
record requiredCallout response header customizations.
-
store
boolean default:true
If false, skips storing the callout response headers intokong.ctx.shared.callouts.
.response.headers.
-
-
body
record required-
store
boolean default:true
If false, skips storing the callout response body into kong.ctx.shared.callouts.
.response.body.
-
decode
boolean default:false
If true, decodes the response body before storing into the context. Only JSON is supported.
-
-
by_lua
stringLua code that executes after the callout request is made, before caching takes place. Standard Lua sandboxing restrictions apply.
-
-
cache
record requiredCallout caching configuration.
-
bypass
boolean default:false
If true, skips caching the callout response.
-
-
-
cache
record requiredPlugin global caching configuration.
-
strategy
string required default:off
Must be one of:memory
,redis
,off
The backing data store in which to hold cache entities. Accepted values are:
off
,memory
, andredis
.
-
memory
record required-
dictionary_name
string required default:kong_db_cache
The name of the shared dictionary in which to hold cache entities when the memory strategy is selected. Note that this dictionary currently must be defined manually in the Kong Nginx template.
-
-
redis
record required-
host
string default:127.0.0.1
A string representing a host name, such as example.com.
-
port
integer default:6379
between:0
65535
An integer representing a port number between 0 and 65535, inclusive.
-
connect_timeout
integer default:2000
between:0
2147483646
An integer representing a timeout in milliseconds. Must be between 0 and 2^31-2.
-
send_timeout
integer default:2000
between:0
2147483646
An integer representing a timeout in milliseconds. Must be between 0 and 2^31-2.
-
read_timeout
integer default:2000
between:0
2147483646
An integer representing a timeout in milliseconds. Must be between 0 and 2^31-2.
-
username
string referenceableUsername to use for Redis connections. If undefined, ACL authentication won’t be performed. This requires Redis v6.0.0+. To be compatible with Redis v5.x.y, you can set it to
default
.
-
password
string referenceable encryptedPassword to use for Redis connections. If undefined, no AUTH commands are sent to Redis.
-
sentinel_username
string referenceableSentinel username to authenticate with a Redis Sentinel instance. If undefined, ACL authentication won’t be performed. This requires Redis v6.2.0+.
-
sentinel_password
string referenceable encryptedSentinel password to authenticate with a Redis Sentinel instance. If undefined, no AUTH commands are sent to Redis Sentinels.
-
database
integer default:0
Database to use for the Redis connection when using the
redis
strategy
-
keepalive_pool_size
integer default:256
between:1
2147483646
The size limit for every cosocket connection pool associated with every remote server, per worker process. If neither
keepalive_pool_size
norkeepalive_backlog
is specified, no pool is created. Ifkeepalive_pool_size
isn’t specified butkeepalive_backlog
is specified, then the pool uses the default value. Try to increase (e.g. 512) this value if latency is high or throughput is low.
-
keepalive_backlog
integer between:0
2147483646
Limits the total number of opened connections for a pool. If the connection pool is full, connection queues above the limit go into the backlog queue. If the backlog queue is full, subsequent connect operations fail and return
nil
. Queued operations (subject to set timeouts) resume once the number of connections in the pool is less thankeepalive_pool_size
. If latency is high or throughput is low, try increasing this value. Empirically, this value is larger thankeepalive_pool_size
.
-
sentinel_master
stringSentinel master to use for Redis connections. Defining this value implies using Redis Sentinel.
-
sentinel_role
string Must be one of:master
,slave
,any
Sentinel role to use for Redis connections when the
redis
strategy is defined. Defining this value implies using Redis Sentinel.
-
sentinel_nodes
array of typerecord
len_min:1
Sentinel node addresses to use for Redis connections when the
redis
strategy is defined. Defining this field implies using a Redis Sentinel. The minimum length of the array is 1 element.-
host
string required default:127.0.0.1
A string representing a host name, such as example.com.
-
port
integer default:6379
between:0
65535
An integer representing a port number between 0 and 65535, inclusive.
-
-
cluster_nodes
array of typerecord
len_min:1
Cluster addresses to use for Redis connections when the
redis
strategy is defined. Defining this field implies using a Redis Cluster. The minimum length of the array is 1 element.-
ip
string required default:127.0.0.1
A string representing a host name, such as example.com.
-
port
integer default:6379
between:0
65535
An integer representing a port number between 0 and 65535, inclusive.
-
-
ssl
boolean default:false
If set to true, uses SSL to connect to Redis.
-
ssl_verify
boolean default:false
If set to true, verifies the validity of the server SSL certificate. If setting this parameter, also configure
lua_ssl_trusted_certificate
inkong.conf
to specify the CA (or server) certificate used by your Redis server. You may also need to configurelua_ssl_verify_depth
accordingly.
-
server_name
stringA string representing an SNI (server name indication) value for TLS.
-
cluster_max_redirections
integer default:5
Maximum retry attempts for redirection.
-
connection_is_proxied
boolean default:false
If the connection to Redis is proxied (e.g. Envoy), set it
true
. Set thehost
andport
to point to the proxy address.
-
-
cache_ttl
integer default:300
TTL in seconds of cache entities.
-
-
upstream
record requiredCustomizations to the upstream request.
-
by_lua
stringLua code that executes before the upstream request is made. Standard Lua sandboxing restrictions apply.
-
query
record requiredUpstream request query param customizations.
-
forward
boolean default:true
If false, does not forward request query params to upstream request.
-
custom
mapThe custom query params to be added in the upstream HTTP request. Values can contain Lua expressions in the form $(some_lua_code).
-
-
headers
record requiredCallout request header customizations.
-
forward
boolean default:true
If false, does not forward request headers to upstream request.
-
custom
mapThe custom headers to be added in the upstream HTTP request. Values can contain Lua expressions in the form $(some_lua_code).
-
-
body
record requiredCallout request body customizations.
-
forward
boolean default:true
If false, skips forwarding the incoming request’s body to the upstream request.
-
decode
boolean default:true
If true, decodes the request’s body to make it available for upstream by_lua customizations.
-
custom
mapThe custom body fields to be added in the upstream request body. Values can contain Lua expressions in the form $(some_lua_code).
-
-
-