Biz-SIP业务中台支持多种报文类型的格式转换器，包括XML、JSON、定长、有分隔符、ISO-8583等报文类型的解包和打包，格式转换器可以在Source模块和Sink服务中进行配置和使用，实现打包（平台标准报文格式转换成外部报文格式）和解包（外部报文格式转换成平台标准报文格式）。
iso-8583类型的格式转换器，能把Biz-SIP内部标准消息报文，根据配置打包成外部的ISO8583格式报文；同时也直接把外部的ISO8583格式报文，解包成Biz-SIP内部标准消息报文。
本节案例中是在Sink服务模块中，配置iso-8583格式转换器，以实现ISO8583格式报文（velocity-split）的打包和解包：
其中，App层是通过Sink透传App服务，直接让调用方通过OpenAPI接口调用Sink服务（iso-8583-sink），Sink服务会把平台内部标准格式（JSONObject对象，内部即JSON报文）进行打包成ISO8583格式报文，传给通讯连接器Connector，原包返回后再解包成平台内部标准格式，响应给调用方。
一、Sink层Sink服务的开发和配置
同样，在Biz-SIP配置目录的sink.yml中，配置对应的Sink服务：
- id: iso-8583-sink
type: rest
url: http://bizsip-sample-sink/iso-8583-sink
converter:
type: iso-8583
destination-id: '00010344'
source-id: '42430440'
fields:
- index: 2
length: 19
unfixed: 2
name: accNo2
- index: 3
length: 6
name: processingCode3
- index: 4
length: 12
name: amt_trans4
- index: 5
length: 12
name: amt_settlmt5
- index: 6
length: 12
name: transactionAmount6
- index: 7
length: 10
name: transmsn_date_time7
- index: 9
length: 8
name: transmsn_date_time9
- index: 10
length: 8
name: transmsn_date_time10
- index: 11
length: 6
name: systemTraceAuditNumber11
- index: 12
length: 6
name: time_local_trans12
- index: 13
length: 4
name: date_local_trans13
- index: 14
length: 4
name: date_expr14
- index: 15
length: 4
name: date_settlmt15
- index: 16
length: 4
name: date_conv16
- index: 18
length: 4
name: mchnt_type18
- index: 19
length: 3
name: mchnt_cntry_code19
- index: 22
length: 3
name: pos_entry_mode_code22
- index: 23
length: 3
name: card_seq_num23
- index: 25
length: 2
name: pos_cond_code25
- index: 26
length: 2
name: pos_pin_cap_code26
- index: 28
length: 9
name: amt_fee28
- index: 32
length: 11
unfixed: 2
name: acq_inst_id_code32
- index: 33
length: 11
unfixed: 2
name: fwd_inst_id_code33
- index: 35
length: 37
unfixed: 2
name: track2_data35
- index: 36
length: 104
unfixed: 3
name: track3_data36
- index: 37
length: 12
name: retrivl_ref_num37
- index: 38
length: 6
name: authr_id_resp38
- index: 39
length: 2
name: resp_code39
- index: 41
length: 8
name: card_accptr_termnl_id41
- index: 42
length: 15
name: card_accptr_id42
- index: 43
length: 40
name: card_accptr_name_loc43
- index: 44
length: 25
unfixed: 2
name: addtnl_resp_code44
- index: 45
length: 76
unfixed: 2
name: track1_data45
- index: 48
length: 512
unfixed: 3
name: addtnl_data_private48
- index: 49
length: 3
name: currcy_code_trans49
- index: 50
length: 3
name: currcy_code_settlmt50
- index: 51
length: 3
name: currcy_code_cdhldr_bil51
- index: 52
length: 8
name: pin_data52
- index: 53
length: 16
name: security_control_info53
- index: 54
length: 40
unfixed: 3
name: addtnl_amt54
- index: 55
length: 255
unfixed: 3
name: ICC_data55
- index: 56
length: 255
unfixed: 3
name: token_par56
- index: 57
length: 100
unfixed: 3
name: issr_addtnl_data57
- index: 59
length: 600
unfixed: 3
name: detai_inquiring59
- index: 60
length: 100
unfixed: 3
name: reserved60
- index: 61
length: 200
unfixed: 3
name: ch_auth_info61
- index: 62
length: 200
unfixed: 3
name: switching_data62
- index: 63
length: 512
unfixed: 3
name: fin_net_data63
- index: 70
length: 3
name: net_mgr_info_code70
- index: 90
length: 42
name: ori_data_element90
- index: 96
length: 8
name: msg_security_code96
- index: 100
length: 11
unfixed: 2
name: rcvg_inst_id_code100
- index: 102
length: 28
unfixed: 2
name: acct_id_1_102
- index: 103
length: 28
unfixed: 2
name: acct_id_2_103
- index: 104
length: 512
unfixed: 3
name: trans_industry_app_inf104
- index: 113
length: 512
unfixed: 3
name: add_data113
- index: 117
length: 256
unfixed: 3
name: addtnl_data117
- index: 121
length: 100
unfixed: 3
name: national_sw_resved121
- index: 122
length: 100
unfixed: 3
name: acq_inst_resvd122
- index: 123
length: 100
unfixed: 3
name: issr_inst_resvd123
- index: 125
length: 256
unfixed: 3
name: addtnl_data125
- index: 128
length: 8
name: msg_authn_code128
connector:
type: service
class-name: com.bizmda.bizsip.sample.sink.service.EchoConnectorService
可以看到iso-8583-sink这个Sink服务，connector关联了能把请求报文直接原包响应返回的EchoConnectorService类。而格式转换器converter，则直接设置“type: iso-8583”，表示采用ISO8583格式转换器，作为当前Sink服务的格式转换器。
Sink服务的converter项下配置了destination-id和source-id参数，分别代表目的地址和源地址，fields下定义了ISO8583报文中各域的约定，index为域号，name为数据关联的域名，length为域长度，unfixed为变长位数。
这个Sink服务没有设置processor属性，即为缺省default类型，采用默认的缺省Sink服务流程来处理的，处理步骤依次为：
- 调用格式转换器converter对传入报文进行打包；
- 对上步打包后的报文作为调用请求报文，调用通讯适配器connector进行处理，并收到并返回响应报文；
- 调用格式转换器converter对响应报文进行解包，并返回解包后的报文。
最后，还需要在SampleSinkApplication的应用配置文件application-local.yml中，在bizsip.sink-id配置项中，增加iso-8583-sink以便启动Sink服务：
bizsip:
config-path: /var/bizsip/config
sink-id: hello-sink,echo-sink,simple-xml-sink,velocity-json-sink,velocity-xml-sink,fixed-length-sink,velocity-split-sink,iso-8583-sink
二、App层App服务的开发和配置
对于Sink透传App服务，只需要在app.yml中配置即可：
- app-service-id: /sink/iso-8583-sink
type: sink-service
sink-id: iso-8583-sink
可以看到在app.yml中，配置了App服务“/sink/iso-8583-sink”，类型为Sink透传App服务（sink-service），透传调用的Sink服务为“iso-8583-sink”。
三、启动应用进行测试
启动SampleSinkApplication、SampleAppApplication应用，通过OpenAPI接口进行测试：
$ curl -H "Content-Type:application/json" -H "Biz-Service-Id:/sink/iso-8583-sink" -X POST --data '{"msgType": "0800","reserved60": "000000000030","card_accptr_id42": "898411341310014","systemTraceAuditNumber11": "000001","switching_data62": "53657175656e6365204e6f3132333036303733373832323134","card_accptr_termnl_id41": "73782214","msgHead": "31323334353637383930313233343536373839303132333435363738393031323334353637383930313233343536","acct_id_1_102": "1234567890","fin_net_data63": "303031"}' http://localhost:8888/api|jq
{
"code": 0,
"message": "success",
"extMessage": null,
"appServiceId": "/sink/iso-8583-sink",
"traceId": "9ffadf46d47849d2b353baec35d42ac7",
"parentTraceId": null,
"timestamp": 1647176027306,
"data": {
"msgType": "0800",
"reserved60": "000000000030",
"card_accptr_id42": "898411341310014",
"systemTraceAuditNumber11": "000001",
"switching_data62": "53657175656e6365204e6f3132333036303733373832323134",
"card_accptr_termnl_id41": "73782214",
"msgHead": "31323031383430303031303334342020203432343330343430202020393031323334353637383930313233343536",
"acct_id_1_102": "1234567890",
"fin_net_data63": "303031"
}
}
EchoConnectorService打印日志：
收到报文:
====+ 01-02-03-04-05-06-07-08-09-10-11-12-13-14-15-16-17-18-19-20 + ====== ASCII ====== +
0000: 31 32 30 31 38 34 30 30 30 31 30 33 34 34 20 20 20 34 32 34 | 12018400010344 424 |
0020: 33 30 34 34 30 20 20 20 39 30 31 32 33 34 35 36 37 38 39 30 | 30440 901234567890 |
0040: 31 32 33 34 35 36 30 38 30 30 80 20 00 00 00 C0 00 16 00 00 | 1234560800� ...�.... |
0060: 00 00 04 00 00 00 30 30 30 30 30 31 37 33 37 38 32 32 31 34 | ......00000173782214 |
0080: 38 39 38 34 31 31 33 34 31 33 31 30 30 31 34 30 31 32 30 30 | 89841134131001401200 |
0100: 30 30 30 30 30 30 30 30 33 30 30 35 30 35 33 36 35 37 31 37 | 00000000300505365717 |
0120: 35 36 35 36 65 36 33 36 35 32 30 34 65 36 66 33 31 33 32 33 | 5656e6365204e6f31323 |
0140: 33 33 30 33 36 33 30 33 37 33 33 33 37 33 38 33 32 33 32 33 | 33036303733373832323 |
0160: 31 33 34 30 30 36 33 30 33 30 33 31 31 30 31 32 33 34 35 36 | 13400630303110123456 |
0180: 37 38 39 30 | 7890................ |
