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QUESTION
I just reinstalled Fabric Samples v2.2.0 from Hyperledger Fabric repository according to the documentation.
But when I try to run asset-transfer-basic
application located in fabric-samples/asset-transfer-basic/application-javascript
directory by running node app.js
the wallet is created and an admin and user is registered. But then it tries to invoke the function as given in app.js
and shows this error
ANSWER
Answered 2021-Jan-29 at 04:04In my opinion, the CORE_VM_DOCKER_HOSTCONFIG_NETWORKMODE
setting seems to be wrong.
you can check docker-compose.yaml
or core.yaml
- I will explain fabric-samples/test-network as targeting according to your current situation.
- You can check in
CORE_VM_DOCKER_HOSTCONFIG_NETWORKMODE
in docker-compose.yaml - Perhaps in your case(fabric-samples/test-network), the value of
${COMPOSE_PROJECT_NAME}
was not set properly, so it was set to_test
. - Make sure the value is set correctly and change it to your network name.
QUESTION
Is there away to run scheduled background job on stateful service in azure service fabric ? the only way I found only was timers & reminders which they run on Actors not stateful service. I'm trying to run scheduled background job to clean up some data in Reliable dictionary.
...ANSWER
Answered 2021-Jun-14 at 08:15The recommended way to run background jobs in Service Fabric is to simply override the RunAsync
operation. This works equally fine for stateful and stateless services - although, as already mentioned, Actors
provide some additional functionality with its built in support for reminders and timers.
Below is a very basic example
QUESTION
ANSWER
Answered 2021-Jun-12 at 16:24I found many issues with the approach I was trying to implement. Now instead od repositionin, grouping, etc.I am zooming the canvas
QUESTION
Whenever I am trying to execute a transaction through NodeJS I am getting the error.
...ANSWER
Answered 2021-Feb-19 at 15:54Answering my question here. Based on @Gari Singh's answer above the certificate that you have to use in the "tlsCACerts" parameter in the connection.json file has to be created by combining the intermediate and root CA into a single file. The first block in the file should be the intermediate CA and the second block should be the root CA. This certificate chaining is required because the intermediate CA is signed by the root CA and the client should pass both so that they can be validated properly. Comprehensive explanation can be found here: https://www.thesslstore.com/blog/root-certificates-intermediate/
The final thing that I was missing because of which I was getting the error "Failed to evaluate transaction: Error: Committer must be connectable" was that I was passing 3 orderers in the "channels" section of the config and only passing one of their details in the "orderers" section of the config. Adding the ip and other details for the other 2 orderers took care of that issue.
QUESTION
I have two Strings
"TOP : Cotton + Embroidered ( 2 Mtr) \nBOTTOM : Cotton + Solid (2 Mtr) \nDUPATTA : Chiffon + Lace Work ( 2 Mtr) \nTYPE : Un Stitched\nCOLOUR : Multi Colour \nCONTAINS : 1 TOP WITH LINING 1 BOTTOM & 1 DUPATTA\nCountry of Origin: India"
and Second one is
"Top Fabric: Cotton Cambric + Top Length: 0-2.00\nBottom Fabric: Cotton Cambric + Bottom Length: 0-2.00\nDupatta Fabric: Nazneen + Dupatta Length: 0-2.00\nLining Fabric: Cotton Cambric\nType: Un Stitched\nPattern: Printed\nMultipack: 3 Top\nCountry of Origin: India"
I need to create python dictionary out of these two strings but with keys which are before colon
for example in string one keys would be
TOP,BOTTOM,DUPATTA,TYPE,COLOUR,CONTAINS,COUNTRY OF ORIGIN
and in second one
keys would be
Top Fabric,Bottom Fabric,Top Length,Bottom Length,Dupatta Fabric,Dupatta Length,Lining Fabric,Type,Pattern,Multipack,Country of Origin
So far i have used
...ANSWER
Answered 2021-Jun-10 at 11:40You might use a regex pattern that matches the part before the colon in group 1 and after the colon in group 2.
Then assert that after group 2, there is either another part starting with a +
followed by :
or the end of the string.
Then create a dictionary, stripping the group 1 and group 2 values.
QUESTION
How do you get a specific object from Fabric.js, and determine which one you got? Like calling canvas.getSelectedObject()
and then determining if the
returned object is an IText
or a Circle
or something else.
Thanks.
...ANSWER
Answered 2021-Jun-09 at 10:04I think instanceof
may be what you want.
QUESTION
I need to get the number of lines in a Fabric.js Textbox. The text inside the textbox is inputted by the user, and parts of the text can be formatted to bold using [b]
and [/b]
. This text is then formatted using setSelectionStyles
(changing the fontFamily).
ANSWER
Answered 2021-Jun-10 at 06:12Solved by calling canvas.add(fabricText)
and canvas.renderAll()
before getting _textLines.length
.
QUESTION
ANSWER
Answered 2021-Jun-09 at 23:46http://fabricjs.com/fabric-gotchas
Wrong position after reloading a JSON object - NUM_FRACTION_DIGITS
Fabric can serialize and deserialize objects in a plain object format. When dealing with serialization, floats can be a problem and give long strings with an unnecessary quantity of decimals. This blows up the string size. To reduce that, there is a constant defined on the Object called
NUM_FRACTION_DIGITS
, historically set to 2. That means that a top value of3.454534413123
is saved as3.45
, same for scale, width, height. This is mostly fine unless you are dealing without situation where precision matter. To make an example, a very large image, can be scaled down to a small size using a scale of0.0151
. In this case a serialization would save it as0.02
changing meaningully the scale. If you are facing such situations, in your project set the constant higher:fabric.Object.NUM_FRACTION_DIGITS = 8
to have 8 decimals on properties. This affects SVG export too.
your image is more than 4000px large, you fall into this issue
corrected fiddle with the "num fraction digits" set to 8 : https://jsfiddle.net/xrfa5dzc/
QUESTION
I am using Hyperledger Fabric v2.3.1.I am trying to approve my chaincode definition with argument --signature-policy "OR('Org1MSP.peer','Org2MSP.peer')" instead of the default endorsement for the test-network. The whole command is below
...ANSWER
Answered 2021-Jun-09 at 07:31add flag --signature-policy
when you commit your chaincode,like these
QUESTION
I am currently running hyperledger fabric v2.2. I have developed the chaincode using the contractapi and developing the application using fabric-sdk-go/pkg/gateway
How can i get the transaction status and the transaction payload? I am aware of the GetHistoryByKey() which is available in the contractapi but that doesn't works out for my application.
I know there is hyperledger-explorer which can be used to search transactions by TxID but my use-case is my application will be querying by TxID and then it will verify the status of that particular transaction (TxID).
Also, i have tried to achieve this using the fabsdk but i am getting an error when i try to create instantiate the fabsdk using the fabsdk.New()
. There seems to be some compatibility issue with the connection-profile.json which i am using the fabric-sample project.
The error which i am getting is:
failed to create identity manager provider: failed to initialize identity manager for organization: MyOrgName: Either a cryptopath or an embedded list of users is required
The same connection-profile has been used in getting the network up and running, and everything seems to be working all good. I am able to submit and evaluate transactions.
SOLUTION
The system chaincodes are embedded in the peer itself. so we need to set the target otherwise it would just give the discovery error since the contract QSCC is not explicitly deployed on the channel.
Make sure to check the core.yaml file channel.system - the system chaincode should be enabled channel.system.qscc: enable
...ANSWER
Answered 2021-Jun-08 at 11:42Your client application can use the client SDK appropriate to your pogramming language to evaluate the GetTransactionByID
transaction function on the qscc
system chaincode, which is available on all peers. This transaction function takes a transaction ID as its only argument and returns a peer.ProcessedTransaction
protobuf, which contains the transaction envelope and a validation code.
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