Azure LogicApps：从字符串到浮点数的转换 returns 零
Azure LogicApps: Conversion from String to Float returns zero
看到这个我很惊讶，但我发现在某些情况下字符串值没有按预期转换为浮点数；大多数 returns 零。
下图显示了发生的情况。如您所见，我的逻辑应用程序中有 2 个变量，即 string 类型的 var_MarginStr 和 float 类型的 var_MarginValues。我分配 var_MarginVal 如下：
var_MarginVal = float(string(variables('var_MarginStr')))
在我的工作中，我在将新的 blob 插入 blob 存储帐户后触发我的逻辑应用程序。 blob 的内容 (*.csv) 被传递给一个 Azure 函数，其中 returns 一个 JSON 对象。然后 JSON 对象在每个项目上循环并通过存储过程发送到我的数据库。
我已经检查了我的 Azure Function，它可以将内容转换为 JSON 并且工作正常，这样的响应是：
{
"fileName": "20200307-PLC-JKB-Margin.csv",
"agentName": "PLC",
"noOfRecords": 5,
"data": [
{
"accountId": "JKB1234LC",
"marginValue": "0.00"
},
{
"accountId": "JKB4321LC",
"marginValue": "1200000.00"
},
{
"accountId": "JKB5678LC",
"marginValue": "6000000.00"
},
{
"accountId": "JKB8765LC",
"marginValue": "4000000.00"
},
{
"accountId": "JKB9123LC",
"marginValue": "0.00"
}
]
}
这是我的整个 LogicApp：
{
"definition": {
"$schema": "https://schema.management.azure.com/providers/Microsoft.Logic/schemas/2016-06-01/workflowdefinition.json#",
"actions": {
"CSVTOJSON": {
"inputs": {
"body": "@body('Get_blob_content')",
"function": {
"id": "/subscriptions/xxxx/resourceGroups/xxxx-PRD-PORTAL-01/providers/Microsoft.Web/sites/jksbmarginrequest/functions/CSVTOJSON"
},
"method": "POST",
"queries": {
"fileName": "@triggerBody()?['Name']"
}
},
"runAfter": {
"[Initialize]_For_Composed_AccountId": [
"Succeeded"
]
},
"type": "Function"
},
"Condition": {
"actions": {
"Apply_to_DB": {
"actions": {
"Execute_stored_procedure_(V2)": {
"inputs": {
"body": {
"pActualAccountId": "@{items('Apply_to_DB')?['accountId']}@{variables('var_ComposeAccountIdSuffix')}",
"pAgentId": "@variables('var_AgentName')",
"pEffectiveDate": "@{formatDateTime(utcNow(),'yyyy-MM-dd')}",
"pMarginVal": "@variables('var_MarginVal')"
},
"host": {
"connection": {
"name": "@parameters('$connections')['sql']['connectionId']"
}
},
"method": "post",
"path": "/v2/datasets/@{encodeURIComponent(encodeURIComponent('default'))},@{encodeURIComponent(encodeURIComponent('default'))}/procedures/@{encodeURIComponent(encodeURIComponent('[dbo].[usp_MarginAddUpdate]'))}"
},
"runAfter": {
"[Set]_Margin_Value_Float": [
"Succeeded"
]
},
"type": "ApiConnection"
},
"[Set]_Margin_Value_Float": {
"inputs": {
"name": "var_MarginVal",
"value": "@float(string(variables('var_MarginStr')))"
},
"runAfter": {
"[Set]_Margin_Value_String": [
"Succeeded"
]
},
"type": "SetVariable"
},
"[Set]_Margin_Value_String": {
"inputs": {
"name": "var_MarginStr",
"value": "@items('Apply_to_DB')?['marginValue']"
},
"runAfter": {},
"type": "SetVariable"
}
},
"foreach": "@body('Parse_JSON')?['data']",
"runAfter": {
"For_each": [
"Succeeded"
]
},
"type": "Foreach"
},
"Create_HTML_table": {
"inputs": {
"format": "HTML",
"from": "@body('Parse_JSON')?['data']"
},
"runAfter": {
"Apply_to_DB": [
"Succeeded"
]
},
"type": "Table"
},
"Execute_a_SQL_query_(V2)": {
"inputs": {
"body": {
"actualParameters": {
"pAgentId": "@variables('var_AgentName')"
},
"formalParameters": {
"pAgentId": "VARCHAR(10)"
},
"query": "select * from [dbo].[Parser_MarginFileSettings]\nWhere AgentId =@pAgentId"
},
"host": {
"connection": {
"name": "@parameters('$connections')['sql']['connectionId']"
}
},
"method": "post",
"path": "/v2/datasets/@{encodeURIComponent(encodeURIComponent('default'))},@{encodeURIComponent(encodeURIComponent('default'))}/query/sql"
},
"runAfter": {
"[Set]_Agent_Name": [
"Succeeded"
]
},
"type": "ApiConnection"
},
"For_each": {
"actions": {
"[Set]_Composed_Account_ID_with_Suffix": {
"inputs": {
"name": "var_ComposeAccountIdSuffix",
"value": "@items('For_each')?['Suffix_AccountId']"
},
"runAfter": {},
"type": "SetVariable"
}
},
"foreach": "@body('Execute_a_SQL_query_(V2)')?['resultsets']?['Table1']",
"runAfter": {
"Execute_a_SQL_query_(V2)": [
"Succeeded"
]
},
"type": "Foreach"
},
"Parse_JSON": {
"inputs": {
"content": "@body('CSVTOJSON')",
"schema": {
"properties": {
"agentName": {
"type": "string"
},
"data": {
"items": {
"properties": {
"accountId": {
"type": "string"
},
"marginValue": {
"type": "string"
}
},
"required": [
"accountId",
"marginValue"
],
"type": "object"
},
"type": "array"
},
"fileName": {
"type": "string"
},
"noOfRecords": {
"type": "integer"
}
},
"type": "object"
}
},
"runAfter": {},
"type": "ParseJson"
},
"[Set]_Agent_Name": {
"inputs": {
"name": "var_AgentName",
"value": "@body('Parse_JSON')?['agentName']"
},
"runAfter": {
"Parse_JSON": [
"Succeeded"
]
},
"type": "SetVariable"
}
},
"else": {
"actions": {
"Compose_Fail-over_Data": {
"inputs": {
"File_Name": "@triggerBody()?['Name']",
"Message": "@body('CSVTOJSON')",
"Status_Code": "@outputs('CSVTOJSON')['statusCode']"
},
"runAfter": {},
"type": "Compose"
},
"For_Error_Listing": {
"inputs": {
"format": "HTML",
"from": "@outputs('Compose_Fail-over_Data')"
},
"runAfter": {
"Compose_Fail-over_Data": [
"Succeeded"
]
},
"type": "Table"
},
"Send_an_email_(V2)": {
"inputs": {
"body": {
"Body": "<p><u><strong>An Error Occured While Updating Margin Request File<br>\n<br>\n</strong></u><u><strong>@{outputs('Compose_Fail-over_Data')}</strong></u><u><strong></strong></u><br>\n</p>",
"Subject": "Margin File Output",
"To": "itops@jkstock.keells.com"
},
"host": {
"connection": {
"name": "@parameters('$connections')['office365']['connectionId']"
}
},
"method": "post",
"path": "/v2/Mail"
},
"runAfter": {
"For_Error_Listing": [
"Succeeded"
]
},
"type": "ApiConnection"
}
}
},
"expression": {
"and": [
{
"equals": [
"@outputs('CSVTOJSON')['statusCode']",
200
]
}
]
},
"runAfter": {
"CSVTOJSON": [
"Succeeded"
]
},
"type": "If"
},
"Get_blob_content": {
"inputs": {
"host": {
"connection": {
"name": "@parameters('$connections')['azureblob']['connectionId']"
}
},
"method": "get",
"path": "/datasets/default/files/@{encodeURIComponent(encodeURIComponent(triggerBody()?['Path']))}/content",
"queries": {
"inferContentType": true
}
},
"runAfter": {},
"runtimeConfiguration": {
"staticResult": {
"name": "Get_blob_content0",
"staticResultOptions": "Disabled"
}
},
"type": "ApiConnection"
},
"[Initialize]_Agent_Name": {
"inputs": {
"variables": [
{
"name": "var_AgentName",
"type": "string",
"value": "PLC"
}
]
},
"runAfter": {
"Get_blob_content": [
"Succeeded"
]
},
"type": "InitializeVariable"
},
"[Initialize]_For_Composed_AccountId": {
"inputs": {
"variables": [
{
"name": "var_ComposeAccountIdSuffix",
"type": "string"
}
]
},
"runAfter": {
"[Initialize]_For_Margin_Value_FLoat": [
"Succeeded"
]
},
"type": "InitializeVariable"
},
"[Initialize]_For_Margin_Value_FLoat": {
"inputs": {
"variables": [
{
"name": "var_MarginVal",
"type": "float",
"value": 0
}
]
},
"runAfter": {
"[Initialize]_Margin_Value_String": [
"Succeeded"
]
},
"type": "InitializeVariable"
},
"[Initialize]_Margin_Value_String": {
"inputs": {
"variables": [
{
"name": "var_MarginStr",
"type": "string"
}
]
},
"runAfter": {
"[Initialize]_Agent_Name": [
"Succeeded"
]
},
"type": "InitializeVariable"
}
},
"contentVersion": "1.0.0.0",
"outputs": {},
"parameters": {
"$connections": {
"defaultValue": {},
"type": "Object"
}
},
"staticResults": {
"Get_blob_content0": {
"outputs": {
"headers": {},
"statusCode": "OK"
},
"status": "Succeeded"
}
},
"triggers": {
"When_a_blob_is_added_or_modified_(properties_only)": {
"inputs": {
"host": {
"connection": {
"name": "@parameters('$connections')['azureblob']['connectionId']"
}
},
"method": "get",
"path": "/datasets/default/triggers/batch/onupdatedfile",
"queries": {
"folderId": "JTJmcGxj",
"maxFileCount": 1
}
},
"metadata": {
"JTJmcGxj": "/plc"
},
"recurrence": {
"frequency": "Second",
"interval": 3
},
"splitOn": "@triggerBody()",
"type": "ApiConnection"
}
}
},
"parameters": {
"$connections": {
"value": {
"azureblob": {
"connectionId": "/subscriptions/xxxx/resourceGroups/xxx-PRD-PORTAL-01/providers/Microsoft.Web/connections/azureblob-2",
"connectionName": "azureblob-2",
"id": "/subscriptions/xxxx/providers/Microsoft.Web/locations/southeastasia/managedApis/azureblob"
},
"office365": {
"connectionId": "/subscriptions/xxxx/resourceGroups/xxx-PRD-PORTAL-01/providers/Microsoft.Web/connections/office365",
"connectionName": "office365",
"id": "/subscriptions/xxxx/providers/Microsoft.Web/locations/southeastasia/managedApis/office365"
},
"sql": {
"connectionId": "/subscriptions/xxxx/resourceGroups/xxx-PRD-PORTAL-01/providers/Microsoft.Web/connections/sql-6",
"connectionName": "sql-6",
"id": "/subscriptions/xxxx/providers/Microsoft.Web/locations/southeastasia/managedApis/sql"
}
}
}
}
}
当 For Each 运行s 默认情况下它 运行s 并发迭代。不保证变量使用当前迭代的值。如果按顺序将 For Each 更改为 运行，它将与变量一起使用。在 For Each 设置中，打开 Concurrency Control 并将 Degree of Parallelism 设置为 1。另一个选项是如果您希望它 运行 并行，则删除循环中变量的使用。
本页的 Microsoft 循环文档 https://docs.microsoft.com/en-us/azure/logic-apps/logic-apps-control-flow-loops 说
To get predictable results from operations on variables during each
loop iteration, run those loops sequentially. For example, when a
concurrently running loop ends, the increment, decrement, and append
to variable operations return predictable results. However, during
each iteration in the concurrently running loop, these operations
might return unpredictable results.
看到这个我很惊讶，但我发现在某些情况下字符串值没有按预期转换为浮点数；大多数 returns 零。
下图显示了发生的情况。如您所见，我的逻辑应用程序中有 2 个变量，即 string 类型的 var_MarginStr 和 float 类型的 var_MarginValues。我分配 var_MarginVal 如下：
var_MarginVal = float(string(variables('var_MarginStr')))
在我的工作中，我在将新的 blob 插入 blob 存储帐户后触发我的逻辑应用程序。 blob 的内容 (*.csv) 被传递给一个 Azure 函数，其中 returns 一个 JSON 对象。然后 JSON 对象在每个项目上循环并通过存储过程发送到我的数据库。
我已经检查了我的 Azure Function，它可以将内容转换为 JSON 并且工作正常，这样的响应是：
{
"fileName": "20200307-PLC-JKB-Margin.csv",
"agentName": "PLC",
"noOfRecords": 5,
"data": [
{
"accountId": "JKB1234LC",
"marginValue": "0.00"
},
{
"accountId": "JKB4321LC",
"marginValue": "1200000.00"
},
{
"accountId": "JKB5678LC",
"marginValue": "6000000.00"
},
{
"accountId": "JKB8765LC",
"marginValue": "4000000.00"
},
{
"accountId": "JKB9123LC",
"marginValue": "0.00"
}
]
}
这是我的整个 LogicApp：
{
"definition": {
"$schema": "https://schema.management.azure.com/providers/Microsoft.Logic/schemas/2016-06-01/workflowdefinition.json#",
"actions": {
"CSVTOJSON": {
"inputs": {
"body": "@body('Get_blob_content')",
"function": {
"id": "/subscriptions/xxxx/resourceGroups/xxxx-PRD-PORTAL-01/providers/Microsoft.Web/sites/jksbmarginrequest/functions/CSVTOJSON"
},
"method": "POST",
"queries": {
"fileName": "@triggerBody()?['Name']"
}
},
"runAfter": {
"[Initialize]_For_Composed_AccountId": [
"Succeeded"
]
},
"type": "Function"
},
"Condition": {
"actions": {
"Apply_to_DB": {
"actions": {
"Execute_stored_procedure_(V2)": {
"inputs": {
"body": {
"pActualAccountId": "@{items('Apply_to_DB')?['accountId']}@{variables('var_ComposeAccountIdSuffix')}",
"pAgentId": "@variables('var_AgentName')",
"pEffectiveDate": "@{formatDateTime(utcNow(),'yyyy-MM-dd')}",
"pMarginVal": "@variables('var_MarginVal')"
},
"host": {
"connection": {
"name": "@parameters('$connections')['sql']['connectionId']"
}
},
"method": "post",
"path": "/v2/datasets/@{encodeURIComponent(encodeURIComponent('default'))},@{encodeURIComponent(encodeURIComponent('default'))}/procedures/@{encodeURIComponent(encodeURIComponent('[dbo].[usp_MarginAddUpdate]'))}"
},
"runAfter": {
"[Set]_Margin_Value_Float": [
"Succeeded"
]
},
"type": "ApiConnection"
},
"[Set]_Margin_Value_Float": {
"inputs": {
"name": "var_MarginVal",
"value": "@float(string(variables('var_MarginStr')))"
},
"runAfter": {
"[Set]_Margin_Value_String": [
"Succeeded"
]
},
"type": "SetVariable"
},
"[Set]_Margin_Value_String": {
"inputs": {
"name": "var_MarginStr",
"value": "@items('Apply_to_DB')?['marginValue']"
},
"runAfter": {},
"type": "SetVariable"
}
},
"foreach": "@body('Parse_JSON')?['data']",
"runAfter": {
"For_each": [
"Succeeded"
]
},
"type": "Foreach"
},
"Create_HTML_table": {
"inputs": {
"format": "HTML",
"from": "@body('Parse_JSON')?['data']"
},
"runAfter": {
"Apply_to_DB": [
"Succeeded"
]
},
"type": "Table"
},
"Execute_a_SQL_query_(V2)": {
"inputs": {
"body": {
"actualParameters": {
"pAgentId": "@variables('var_AgentName')"
},
"formalParameters": {
"pAgentId": "VARCHAR(10)"
},
"query": "select * from [dbo].[Parser_MarginFileSettings]\nWhere AgentId =@pAgentId"
},
"host": {
"connection": {
"name": "@parameters('$connections')['sql']['connectionId']"
}
},
"method": "post",
"path": "/v2/datasets/@{encodeURIComponent(encodeURIComponent('default'))},@{encodeURIComponent(encodeURIComponent('default'))}/query/sql"
},
"runAfter": {
"[Set]_Agent_Name": [
"Succeeded"
]
},
"type": "ApiConnection"
},
"For_each": {
"actions": {
"[Set]_Composed_Account_ID_with_Suffix": {
"inputs": {
"name": "var_ComposeAccountIdSuffix",
"value": "@items('For_each')?['Suffix_AccountId']"
},
"runAfter": {},
"type": "SetVariable"
}
},
"foreach": "@body('Execute_a_SQL_query_(V2)')?['resultsets']?['Table1']",
"runAfter": {
"Execute_a_SQL_query_(V2)": [
"Succeeded"
]
},
"type": "Foreach"
},
"Parse_JSON": {
"inputs": {
"content": "@body('CSVTOJSON')",
"schema": {
"properties": {
"agentName": {
"type": "string"
},
"data": {
"items": {
"properties": {
"accountId": {
"type": "string"
},
"marginValue": {
"type": "string"
}
},
"required": [
"accountId",
"marginValue"
],
"type": "object"
},
"type": "array"
},
"fileName": {
"type": "string"
},
"noOfRecords": {
"type": "integer"
}
},
"type": "object"
}
},
"runAfter": {},
"type": "ParseJson"
},
"[Set]_Agent_Name": {
"inputs": {
"name": "var_AgentName",
"value": "@body('Parse_JSON')?['agentName']"
},
"runAfter": {
"Parse_JSON": [
"Succeeded"
]
},
"type": "SetVariable"
}
},
"else": {
"actions": {
"Compose_Fail-over_Data": {
"inputs": {
"File_Name": "@triggerBody()?['Name']",
"Message": "@body('CSVTOJSON')",
"Status_Code": "@outputs('CSVTOJSON')['statusCode']"
},
"runAfter": {},
"type": "Compose"
},
"For_Error_Listing": {
"inputs": {
"format": "HTML",
"from": "@outputs('Compose_Fail-over_Data')"
},
"runAfter": {
"Compose_Fail-over_Data": [
"Succeeded"
]
},
"type": "Table"
},
"Send_an_email_(V2)": {
"inputs": {
"body": {
"Body": "<p><u><strong>An Error Occured While Updating Margin Request File<br>\n<br>\n</strong></u><u><strong>@{outputs('Compose_Fail-over_Data')}</strong></u><u><strong></strong></u><br>\n</p>",
"Subject": "Margin File Output",
"To": "itops@jkstock.keells.com"
},
"host": {
"connection": {
"name": "@parameters('$connections')['office365']['connectionId']"
}
},
"method": "post",
"path": "/v2/Mail"
},
"runAfter": {
"For_Error_Listing": [
"Succeeded"
]
},
"type": "ApiConnection"
}
}
},
"expression": {
"and": [
{
"equals": [
"@outputs('CSVTOJSON')['statusCode']",
200
]
}
]
},
"runAfter": {
"CSVTOJSON": [
"Succeeded"
]
},
"type": "If"
},
"Get_blob_content": {
"inputs": {
"host": {
"connection": {
"name": "@parameters('$connections')['azureblob']['connectionId']"
}
},
"method": "get",
"path": "/datasets/default/files/@{encodeURIComponent(encodeURIComponent(triggerBody()?['Path']))}/content",
"queries": {
"inferContentType": true
}
},
"runAfter": {},
"runtimeConfiguration": {
"staticResult": {
"name": "Get_blob_content0",
"staticResultOptions": "Disabled"
}
},
"type": "ApiConnection"
},
"[Initialize]_Agent_Name": {
"inputs": {
"variables": [
{
"name": "var_AgentName",
"type": "string",
"value": "PLC"
}
]
},
"runAfter": {
"Get_blob_content": [
"Succeeded"
]
},
"type": "InitializeVariable"
},
"[Initialize]_For_Composed_AccountId": {
"inputs": {
"variables": [
{
"name": "var_ComposeAccountIdSuffix",
"type": "string"
}
]
},
"runAfter": {
"[Initialize]_For_Margin_Value_FLoat": [
"Succeeded"
]
},
"type": "InitializeVariable"
},
"[Initialize]_For_Margin_Value_FLoat": {
"inputs": {
"variables": [
{
"name": "var_MarginVal",
"type": "float",
"value": 0
}
]
},
"runAfter": {
"[Initialize]_Margin_Value_String": [
"Succeeded"
]
},
"type": "InitializeVariable"
},
"[Initialize]_Margin_Value_String": {
"inputs": {
"variables": [
{
"name": "var_MarginStr",
"type": "string"
}
]
},
"runAfter": {
"[Initialize]_Agent_Name": [
"Succeeded"
]
},
"type": "InitializeVariable"
}
},
"contentVersion": "1.0.0.0",
"outputs": {},
"parameters": {
"$connections": {
"defaultValue": {},
"type": "Object"
}
},
"staticResults": {
"Get_blob_content0": {
"outputs": {
"headers": {},
"statusCode": "OK"
},
"status": "Succeeded"
}
},
"triggers": {
"When_a_blob_is_added_or_modified_(properties_only)": {
"inputs": {
"host": {
"connection": {
"name": "@parameters('$connections')['azureblob']['connectionId']"
}
},
"method": "get",
"path": "/datasets/default/triggers/batch/onupdatedfile",
"queries": {
"folderId": "JTJmcGxj",
"maxFileCount": 1
}
},
"metadata": {
"JTJmcGxj": "/plc"
},
"recurrence": {
"frequency": "Second",
"interval": 3
},
"splitOn": "@triggerBody()",
"type": "ApiConnection"
}
}
},
"parameters": {
"$connections": {
"value": {
"azureblob": {
"connectionId": "/subscriptions/xxxx/resourceGroups/xxx-PRD-PORTAL-01/providers/Microsoft.Web/connections/azureblob-2",
"connectionName": "azureblob-2",
"id": "/subscriptions/xxxx/providers/Microsoft.Web/locations/southeastasia/managedApis/azureblob"
},
"office365": {
"connectionId": "/subscriptions/xxxx/resourceGroups/xxx-PRD-PORTAL-01/providers/Microsoft.Web/connections/office365",
"connectionName": "office365",
"id": "/subscriptions/xxxx/providers/Microsoft.Web/locations/southeastasia/managedApis/office365"
},
"sql": {
"connectionId": "/subscriptions/xxxx/resourceGroups/xxx-PRD-PORTAL-01/providers/Microsoft.Web/connections/sql-6",
"connectionName": "sql-6",
"id": "/subscriptions/xxxx/providers/Microsoft.Web/locations/southeastasia/managedApis/sql"
}
}
}
}
}
当 For Each 运行s 默认情况下它 运行s 并发迭代。不保证变量使用当前迭代的值。如果按顺序将 For Each 更改为 运行，它将与变量一起使用。在 For Each 设置中，打开 Concurrency Control 并将 Degree of Parallelism 设置为 1。另一个选项是如果您希望它 运行 并行，则删除循环中变量的使用。
本页的 Microsoft 循环文档 https://docs.microsoft.com/en-us/azure/logic-apps/logic-apps-control-flow-loops 说
To get predictable results from operations on variables during each loop iteration, run those loops sequentially. For example, when a concurrently running loop ends, the increment, decrement, and append to variable operations return predictable results. However, during each iteration in the concurrently running loop, these operations might return unpredictable results.