►
Description
Since its beginnings, the Fabric framework has become more robust, more modular and providing more power to develop ambitious applications.
Its new architecture has many advantages but remains difficult to understand, especially for those who are not familiar with distributed environments.
After several prototypes, Antoine CHABERT shared its decryption in a quick and simple online tutorial
(https://chainhero.io/2018/03/tutorial-build-blockchain-app-2/), to allow anyone to start designing an application entirely in Golang and based on the Fabric framework.
Now, he proposes to go further by presenting it to you!
You can take a computer to make it easier to follow the instructions. Everything will be done on a Linux environment (Ubuntu 18.04 LTS).
----
Hyperledger – Open Source Blockchain Technologies
Hyperledger is an open source community focused on developing a suite of stable frameworks, tools and libraries for enterprise-grade blockchain deployments.
It serves as a neutral home for various distributed ledger frameworks including Hyperledger Besu, Fabric, Sawtooth, Indy, as well as tools like Hyperledger Avalon, Cactus and libraries like Hyperledger Aries, Ursa. Learn more about Hyperledger projects: https://www.hyperledger.org/use
Case Studies: https://www.hyperledger.org/learn/case-studies
Training & Certification: https://www.hyperledger.org/learn/training
Tutorials: https://www.hyperledger.org/use/tutorials
Webinars: https://www.hyperledger.org/learn/webinars
Events: https://www.hyperledger.org/events
Vendor Directory: https://www.hyperledger.org/use/vendor-directory
Subscribe to the Hyperledger Newsletter: https://www.hyperledger.org/newsletter
Follow-us on Twitter @Hyperledger
Learn about Hyperledger Membership: https://www.hyperledger.org/about/join
#Hyperledger #HyperledgerGlobalForum2018 #Blockchain
A
A
Tell
you
that
I
can't
cover
everything
we
are
short
on
time
this
morning.
I
will
not
talk
about
hyper
laser
fabric.
Oh
it's
work.
Indeed,
I
will
give
you
some
reminders
in
order
to
be
together
at
the
same
level.
I
will
not
talk
about
how
to
generate
and
configure
an
app
knowledge
of
fabric
network,
but
there
is
a
lot
of
documentation.
Also,
you
can
use
the
first
link,
it's
an
average
toil
made
by
companies,
but
provides
instruction
in
order
to
to
solve
this
problem.
A
A
So
it's
only
for
getting
started
and
understand
how
its
work
I,
hope
you
have
already
walks
with
golem,
because
I
will
not
give
you
a
lot
of
help,
but
I
come
on
this
language.
There
is
not
a
lot
of
instruction,
but
you
need
to
understand
I
hope
you
will
find
a
solution.
If
you
have
any
issue,
don't
don't
forget,
but
you
have
an
access
to
the
Internet
for
his
point.
A
A
Ok,
let's
talk
a
little
bit
about
me,
I'm,
an
engineer
from
the
institutional
distance
appliquéd
from
lyon.
In
france,
I
attendees
at
the
Ecole
Polytechnique
fédérale
de
Lausanne.
The
people
in
Switzerland
here
I
have
some
web
experiences
at
smile,
open
source
and
world
line
at
another's
company
and
now
I'm
head
of
the
research
and
development
department
of
actionable
for
last
the
last
two
years.
A
A
So
how
to
start.
Hi
hope
that
you
read
some
instruction
before
coming
here,
because
you
need
to
use
a
virtual
machine,
but
that
contain
every
every
package
and
every
component
you
need
to
use
in
order
to
make
this
workshop.
If
you
use
Linux
environments,
you
can
try
to
to
use
your
machine.
I
made
this
workshop
on
Ubuntu
and
I
work
for
the
package
requires
our
docker
dr.
Campos,
The
Golem,
and
the
Golem
needs
to
be
welcome
cigarette
with
your
core
parts
and
everything
the
depth.
A
The
codependency
management
tool
need
to
be
installed
and
the
make
the
make
up
command
also
is
required.
So
if
you
have
no
time-
and
you
have
not
the
right
machine
right,
OS-
you
need
to
to
use
I,
encourage
you
to
use
the
virtual
machine.
I
provides
in
the
link.
We
also
have
the
US
beat
stitch
that
are
provided
to
you
in
order
to
to
copy
the
virtual
machine
directly
to
because
it's
it's
a
large
machine.
There
is
all
docker
containers
inside.
A
A
A
A
Also,
if
you
can
issue,
we
can
make
this
workshop
a
little
bit
specific.
If
the
resource
is
very
cool
in
the
company,
the
cooperation
there
is
a
lot
of
vehicles
and
a
lot
of
employees
use
it.
So,
in
order
to
facilitate
the
shared
vehicle,
you
can
use
this
kind
of
system
in
order
to
to
automate
eight
vehicle
availability
and
administrators
can
see
every
moment
who
used
the
vehicle.
A
So
what
about
the
data
structure
we
will
use?
There
is
an
admin
one
or
more.
It's
a
person
proposed
and
manages
resources
for
consumers.
He
got
a
name.
When
you
go
inside
the
code,
you
can
had
more
attributes.
If
you
want,
the
consumer
is
a
person
who
can
acquire
and
then
wealthiest
resource
he
also
got
a
name
and
finally,
the
resource.
It
can
be
an
object
to
goods
or
services
which
is
manageable
and
consumable.
A
So
the
resource
got
a
lot
of
attributes,
an
identity
in
an
ID,
a
description
but
provide
more
information
about
the
resource
and
the
bully
but
L.
If
the
resource
is
available
or
not.
If
the
resource
is
not
available,
there
is
omission
provided
on
which
mission
the
resource
is
deployed.
Also,
the
consumer
that
used
the
resource
is
provided.
A
Several
is
stateless
which,
although
to
be
decentralized
so
the
server
under
request
from
admin
or
consumer
consumer
users
and
provide
provide
the
identification
and
invoke
and
propose
on
the
hyper
laser
fabric
network
using
the
fabric
SDK
go
so
using.
This
kind
of
architecture
alone
has
two
to
diplo
this
web
server
everywhere
and
all
information
are
stored
in
the
high
voltage
of
a
brick
network.
A
So
there
is
two
kind
of
application.
There
is
fashion
code.
You
will
learn
a
lot
about
the
chain
code.
The
last
days,
so
the
chain
code
will
be
writen
in
go
and
the
web
server
will
be
also
write
and
go.
So
this
will
allow
us
to
to
to
use
the
same
data
structure
in
the
two
application
and
share
a
code
hello
to
reduce
the
developments.
The
time
use
we
spend
on
the
development
of
to
application.
A
So,
let's
see
this
movie
that
show
you,
what
can
the
admin
can
do
so?
First,
a
login
that
you
see
it
gets
a
quick
overview
of
the
resources
in
the
resource
page
various
whole
details
about
the
resource.
You
can
add
a
new
resource.
We
give
an
identifier
and
a
description
in
order
for
consumer
to
see
to
the
information
about
the
resource
and
when
the
wants
to
use
it.
A
A
And
you
can
reduce
the
resource
and
that's
it.
The
consumer
part
is
very
easy,
so
that's
it.
So
we
will
focus
on
scenarios
for
today.
The
first
step
is
to
create
the
resource,
so
an
admin
creates
resource
and
makes
is
available
to
consumers.
So
the
second
step
is
a
consumer
that
requires
an
available
resource
and
informs
for
which
missions
and
finally
consumer
realized
radius,
a
resource
which
then
becomes
available.
A
So,
let's
sum
up
in
this
video
movie
left
side,
there
is
the
hangman
user
and
on
the
right
side
there
is
to
consumer
on
the
top,
the
consumer
one
and
on
the
bottom,
the
consumer
to
so
they
login
first
login
every
account,
so
the
whole
gets
sum
up
of
resources.
If
you
look
at
for
consumer
some
obvious
difference
because
they
don't
get
all
resources,
so
the
first
step
is
an
admin
user
that
create
the
resource.
A
So
when
you
we
will
use
the
application,
you
can
make
what
you
want
for
the
description
you
can
use
the
code,
for
example,
so
the
resource
is
created.
You
can
see
that
every
consumer
civil
resource,
one
consumer,
takes
the
resource.
You
give
a
mission
and,
like
you
see,
the
resource
is
taken
and
the
second
consumer
can
see
the
resource
anymore.
A
A
A
A
A
A
So
the
first
step
is
the
application,
but
in
wall,
so
in
login
he
get
certificates
from
the
membership
services
and
then
he
can
propose
some
transaction
in
the
network.
So
the
second
component
is
rupiah.
The
pier
is
here
and
contain
every
information.
The
ledger
is
on
the
on
the
peers,
so
you
can
provide
a
lot
of
peers.
A
Every
peer
have
some
walls
but
below
in,
but
that
can
tell
if
appear
contain
the
chain
code
or,
if
appear
containing
the
ledger,
you
can
choose
what
peers
will
be
used
for
then,
when
the
transaction
is
endorser
undaunted
by
the
appear
it
will
be.
The
application
can
build
the
transaction
and
will
send
this
transaction
to
be
horribles.
A
So
let's
go
deeper
in
the
transaction
process,
so
we
are
in
a
situation
where
the
client
I
want
to
make
a
transaction
in
the
network
already
got
certificates
from
the
membership
services,
and
it
will
ask
to
his
application
the
application
use
and
SDK
or
not,
but
the
application
will
manage
every
underlying
of
the
network,
so
the
client
I
will
pass
to
the
network
to
make
this
transaction.
Let's
say:
I
will
invoke
this
function
on
the
channel,
so
this
DJ
will
see.
A
Will
what
our
policies
inside
the
channel
inside
the
net
and
well
proposed
for
the
transaction
to
every
piers
that
work
that
are
required
in
order
to
validate
the
transaction,
so
every
pier
will
be
contained
will
be
they
will
rest
with.
We
saved
the
proposal
and
each
peers
will
endorse
the
proposal,
so
they
will
run
the
transaction
on
the
chain
code
on
the
own
simple
and
will
they
will
store
every
that
read
and
every
data
right,
but
they
will
not.
They
will
not
apply
the
change
directly
on
the
ledger.
A
They
already
had
the
signatures
on
the
response
and
they
will
send
the
response
of
application.
The
application
will
look
at
for
every
that.
We,
the
application,
look
at
for
any
issue
in
the
signatures
and
also
the
the
application
check
if
the
data
the
data
read
and
the
data
writen
are
the
same
for
every
player's
contacted
every
peers
that
responds.
A
A
Finally,
application
can
build
the
transaction
that
contain
every
signatures
of
every
peers
and
also
the
data
read
and
write
and
send
the
transaction
to
the
ordering
services.
The
ordering
services
don't
check
the
transaction.
Then
they
are
only
here
to
receive
transaction
and
ordering
them
from
making
a
new
block.
So
they
build
a
new
block
for
each
channel
that
contain
transaction
and
then
broadcast
the
transaction
to
every
bills
on
the
channel.
So
every
Pierce
will
receive
we
saved
the
block,
the
new
block
and
they
they
will
use
every
transaction
there.
A
They
are
all
the
read,
so
they
take
the
peels,
takes
the
first
transaction
and
apply
the
transaction
on
the
chain
code
check.
If
that
read,
don't
change
during
this
process
and
if
all
is
ok,
the
data
store
at
this
time
on
the
ledger.
So
a
block
can
contain
some
transaction
that
validates
and
some
transaction
not
valid
invalid.
A
A
Then
the
peers
send
a
response
to
the
application
and
the
application
check
if
everything
is
okay
and
send
the
transaction
to
the
other
words
one
or
more
other
words,
they
order
others,
the
transaction
and
build
a
new
block,
the
block,
its
vents
and
sensitive
to
the
PM's.
The
peers
look
at
change
every
transaction
and
then
had
the
change,
don't
so
run
again
the
transaction
invasion
code
and
had
the
data
right
and
that
are
writen
in
the
ledger.
A
So
what's
about
the
network
for
this
application,
a
prop
I
provided
the
scenario
you
used
whistle
in
a
real
context,
interval
production
application.
Maybe
it's
a
proposal.
It's
ready
different
on
the
company
that
will
use
the
application,
the
context
of
the
application.
So
it's
a
proposal
for
the
situation
where
there
is
one
one
company
and
and
the
company
will
use
this
application
in
order
to
share
these
vehicles.
So
the
company
only
use
one
membership
services
in
order
to
manage
certificates
for
admin,
user
and
consumers.
A
A
A
Also,
there
is
one
channel
because
every
information
is
stored
inside
one
channel,
so
for
the
development
we
only
use
one
one
or
two
peers.
We
don't
need
to
change
resiliency
or
to
check
if
in
a
real
context,
you
only
focus
on
the
developments,
so
we
imagine
and
the
application
I
will
provide.
There
is
only
one
or
two
peers,
one
other
roles
and
we
still
need
one
MSP
and
one
channel
so
get
ready
to
start
I
hope
you
run
the
virtual
machine
and
it's
okay.
A
If
you
go
inside
this
folder,
the
repository
is
already
check
out
all
week,
clone
so
for
others,
people
that
want
to
use
the
home
Linux
and
the
admins
check
that
everything
is
ok.
Go
long,
Doka,
Doka,
compose
the
mage
of
depth
and
trade.
These
folders
on
the
top
go
inside
check
out
the
this
rep
is
doing
and
check
out
the
first
step
branch
with
depth
one.
B
A
All
slides
this,
these
slides
are
provided
on
the
agenda
on
the
scheduled
events,
so
done
out
the
slides
in
order
to
to
get
the
scenario
and
every
information
the
link,
for
example.
So
you
go
on
the
schedule,
let
the
security
the
getting
started
workshop
at
the
bottom.
There
is
the
link
to
download
the
slides.
A
So
the
first
step
when
you
make
this,
take
care
for
people
that
use
the
Linux
and
governments
on
your
machine,
take
care
of
the
case
on
chang-hee
world
in
the
past,
because
you
will
not
walk
if
you
miss
this
point,
okay,
so
the
first
step
is
then
to
to
run
this
command.
You
go
inside
the
folder
and
you
run
make
only
that
this
will
make
a
lot
of
stuff.
A
The
first
things
is
the
cleanup
Indian
development.
If
you
already
start
this
this
command
before,
which
will
clean
up
everything
and
then
run
the
docker
containers
using
docker
compose,
then
the
application
is
built
and
started.
The
application
will
first
create
the
channel
for
the
network
in
order
that
peers
and
component
communicates,
then
the
application
will
install
an
instance
X
version
code
finnaly,
the
application
will
register
free
user,
the
admin
one
consumer,
one
and
consumer
two
and
finally,
the
web
server
is
started.
B
B
A
A
A
A
A
A
A
A
There
is
an
artifacts
folder,
the
artifact
folder
we
will
see
after.
Let's
talk
about
the
docker
compose
ml
is
the
file
that
contains
every
instruction
for
containers.
In
order
to
to
run
the
network,
every
containers
are
provided
are
listed
inside.
Every
configuration
for
containers
come
from
the
five,
the
dozens
and
over
configuration
are.
The
folders
also
the
pre
token
see
contain
all
credential
all
certificates
for
the
network.
The
artefact
folder
contain
the
files
for
the
Genesis
block.
A
A
Then
there
is
a
folder,
but
named
my
channel
that
contain
every
information
for
creating
the
channel.
Where
is
the
channel
dot?
Tx
is
the
file
like
is
Sabina
refil
like
the
Genesis
block,
and
it's
also
some
configuration
the
policy
of
our
channel
is
provided
inside.
So
you
can
also
display
the
file.
A
And
there
is
some
information
some
configuration
inside,
so
this
is
used
to
create
the
channel.
The
last
file
is
to
to
her
in
order
for
application
over
peels
to
know
how
to
contact
the
network
all
to
make
out
who
to
go
inside
the
network
or
to
proceed
communication.
So,
if
I
contain
some
peers,
addresses
these
peers
hair.
In
order
to
to
tell
oh,
you
are
new,
let's,
let's
look
at
of
a
network.
I
I
know
already,
so
this
fight
is
just
hair
in
order
to
to
to
make
new
peers
joining
the
channel.
A
So
for
development
you
can
use
this
binary.
You
provide
also
configuration
file
that
you
that
contain
all
many
user.
You
need
in
your
application
or
all
many
peers.
There
is
in
the
network
and
we
will
generate
every
certificate
for
for
you
up,
it's
not
ready
for
projection.
Every
part
of
research
details
are
self
seen
yet,
so
it's
not
is
not
you
can't
use
for
production
is
not
ready,
fault.
A
Okay.
How
do
we
know
if
everything
is
okay,
so
I
hope
you
run
the
mage
commands
you
use
so
before
you
can?
You
can
look
at
for
dr.
Campos,
you
can
you
can
look
at
for
containers
that
are
running
on
your
machine
to
do
that,
you
need
to
use
one
or
one
of
two
commands
I
provide
I
provide
for
the
docker
compose
command.
You
need
to
go
inside
the
fixture
folder,
because
the
docker
compose
use
the
docker
compose
email,
the
configuration
file
in
order
to
run.
A
So
if
there
is
some
containers
not
running,
there
is
an
issue
if
canary,
for
example,
the
containers
for
the
pier
one.
If
it's
not
running
the
Beanery
has
crashed
the
Beanery
crushed.
If
there
is
an
issue
in
the
communication
of
you
network
or,
for
example,
if
the
configuration
is
not
okay,
if
peer
don't
retrieve
it
certificates,
so
it's
very
container
down.
A
You
have
an
issue
to
get
more
information
about
the
issue.
You
need
to
look
at
for
love
to
get
logs
about
containers.
You
can
use
these
these
commands,
so
the
first
one
of
the
dr.
Campos
command
needs
the
doctor
composed
Yamil
file,
also
not
the
overall
command.
So
if
you
look
for
logs,
there
is
a
lot
of
construction.
A
A
B
B
B
A
B
A
The
exercises
are,
for
the
second
part,
so
to
write
your
first
chain
code.
You
need
to
follow
this
interface
for
the
chain
code.
There
is
to
function.
The
init
function
is
called
only
once
when
you
deploy
the
chain
code
on
the
network.
You
first
install
the
chain
code
on
every
peers
and
then
you,
you
asked
to
a
network
to
instantiate
the
chain
code,
so
you
tell
to
the
network
value
every
peers
need
to
use
this
new
chain
code.
You
provided
so
at
this
time.
The
init
function
is
called.
A
A
The
invoke
function
is
then
called
every
time.
The
is
a
transaction
every
time
there
is
a
proposal,
so
every
logic
we
go
in
the
invoke
function.
Oh
you
get
information
about
the
ledger.
All
is
provided
in
Vesta
chain
code,
stub
interface
version,
custom
interface,
give
you
some
submitted
some
functions
in
order
to
to
to
get
the
context
of
the
transaction
and
to
access
the
ledger
religious
state.
So
the
first
fraction
is
to
get
what
user
and
user
asked
to
do
in
which
entered.
A
So
you
get
the
arguments
provided
by
the
user
in
order
to
to
to
know
what
we
need
to
do
in
the
channel.
Forget
transaction
ID
provide
a
unique
high.
Deformer
transaction
is
really
useful
in
order
to
to
make
some
new
keys.
You
can't
use,
for
example,
generates
function
in
the
chain
code.
Why?
Because
the
network
is
decentralized,
every
deals
will
run
the
chain
code
in
a
different
manner.
A
So
if
you
generate
an
ID,
for
example,
in
each
transaction
in
each
chain
called
sorry,
every
result
will
be
different,
so
the
application
won't
be
able
to
to
make
the
transaction.
So
don't
forget
to
use
the
transaction
ID
if
you
want
to
get
some
new
key.
For
example,
the
three
other
methods
here
in
order
to
manage
to
manage
the
ledger
so
get
information
inside
the
ledger,
put
information
in
the
later
or
Tilly's
key
value.
A
Every
information
is
stored
in
the
key
value
manner,
so
you
need
to
provide
the
key
and
you
will
get
the
value
that
correspond
to
the
key
so
overrated
useful.
Our
gets
query
result
you
you
can
use
by
default.
When
you
run
the
chain
code
in
your
network,
peers
will
use
a
level
DB
database
in
order
to
to
store
the
current
state
of
a
ledger.
A
So
forgetful
results
is
hell
in
order
to
below
you
to
run
a
rich,
proving
the
rich
theory
are
useful.
Is
you
use
couch
DB,
for
example,
in
in
repairing
the
network?
You
can
disable
the
bed
and
use
couch,
TV,
couch,
DB
couch,
for
example,
KGB
is
her,
can
provide
some
rich
information.
You
can
make
a
query
for
by
searching
on
the
value
and
not
the
key,
for
example.
A
So
get
weary
results
is
her
in
order
to
process
to
proceed
this
kind
of
transaction.
This
kind
of
query,
if
you
don't
use
couchdb,
this
will
fail
so
take
care
of
a
network
structure
in
the
project
we
will
run
today.
The
couch
TB
is
already
provided
and
and
ready
to
use.
So
you
can
use
this
function.
If
you
want
the
get
history
for
key
is
issues
inverse
scenario
in
the
application
you
saw
is
used,
for
example,
to
get
every
every
details
of
resource
in
the
past
when
the
resource
was
available
or
not
this.
A
A
There
is
a
lot
of
moral
from
trans
a
lot
of
more
function.
For
example,
in
the
last
session
of
typology
fabric,
you
have
some
method
in
order
to
store
violets
information,
you
can
use
the
ledger
in
order
to
put
some
private
information,
so
information
are
unfitted
is
encrypted
and
every
platter
of
people
that
have
cheese
to
decrease
the
value
can
use,
can
read
inside.
A
How
to
get
information
about
the
identity
of?
Oh,
you
get
an
identity,
information
of
the
user
that
send
the
request.
There
is
fabric,
provide
a
library
CID.
That's
helped
us.
In
order
to
get
information
about
the
user
you
can
get.
For
example,
Heidi's
certificates,
unique
identifier
of
the
certificate.
You
can
get
information
provided
in
the
certificate.
For
example,
some
attributes
you
put
in
the
certificate.
A
A
A
For
donald
libraries
in
bounder
folders,
so
these
files
are
have,
for
example,
to
reach
with
the
typology
of
average
library
for
a
chain
code.
You
can
use
over
the
Prairie
in
your
in
your
code
and
all
will
be
packaged
and
sent
to
every
peers,
but
will,
but
with
install
version
code,
then
there
is
some
go
file.
The
main
is
the
entry
point.
A
Then
there
is
a
you
little
girl
files
that
contain
some
have
some
healthy
function.
For
example,
there
is
the
get
from
leisure,
like
you,
so
every
information
stored
in
the
ledger
bytes,
it's
not
really
useful.
When
you
want
to
store
data
structure,
for
example,
so
I
will
provide
you
this
free
function,
but
that
makes
how
life
easier,
for
example,
the
first
one
is
the
function
but
rich
fields,
an
object
in
the
ledger,
so
you
provide
the
objects.
If
you
want
to
retrieve,
for
example,
in
the
whole
case,
this
will
be
user
admin
or
consumer
resource.
A
Then
you
provide
Heidi
of
objects,
for
example,
for
resource
which
will
be
the
Heidi
of
the
resource.
And
finally,
all
the
results
will
be
will
be
storage
in
the
results
you
provide
in
the
parameters,
so
the
function
will
give
you
the
structure,
feel
it
with
every
information
rich
with
from
from
the
ledger.
The
updates
in
ledger
is
here
in
order
to
update
data
structure
in
the
ledger
and
delete
from
ledger
is
her
in
order
to
remove
key
value
in
the
ledger.
A
B
A
A
There
is
a
model
model,
folders
is
a
package,
another
package
and
every
information.
Every
data
structures
will
be
stored
in
these
folders.
So
why?
Because
the
application
that
is
stored
in
the
half
folder
at
the
roots
of
the
project
will
will
use
this
model
package
in
order
to
reuse
the
same
data
structure
that
are
used
in
the
chain
code.
A
So
every
information
in
the
model
package
is
is
used
by
both
application
version
code
and
the
application
I
put
this
information
in
another
package,
although
that
you
can't
you
can
depend
on
main
package
you
if
you
go
to
already.
If
you
have
already
right
and
Ingo,
you
know
the
this
kind
of
stuff.
So
what
are
provided
in
the
model?
The
model
file
varies
all
data
structure.
So,
like
said
before,
the
admin
user
of
the
consumer
and
the
whistles
the
resource
look
at
that.
A
So
there
is
an
idea
description
and
over
attributes
and
every
attributes
are
stewards
in
villager
in
bytes,
but
in
the
cheesin
way.
Why?
Because
using
coach
DB,
if
you
store
in
villager
Jesus
structure,
you
can
then
query
information.
We
can
run
a
query
that
will
look
at
for
value
in
the
infrastructure
to
deuce.
To
do
that,
you
need
to
store
gisun
structure.
A
A
So
we
we
use
the
first
arguments
in
order
to
know
that
and
while
using
these
two,
this
separation,
because
when
you
write
the
application,
it's
very
useful
to
know
if
the
request,
if
or
read,
is
for
a
right,
because
the
proof
the
process
is
ready,
determined
when
you
want
to
read,
you
only
need
to
contact
to
communicate
with
some
peers,
and
this
will
give
you
the
answer.
There
is
no
like
we
saw
before
in
the
full
transaction
process.
If
you
want
to
write
information
in
the
ledger,
you
need
to
to
create
a
new
block.
A
So
to
do
so,
you
need
to
to
contact
to
communicate
with
the
ordering
services
in
order
to
to
tell
everybody
of
in
the
network
that
there
is
a
new
information
writen.
So
when
it's
only
for
which
you
don't
need
to
do
all
this
stuff,
you
only
need
to
to
communicate
with
some
pills
and
get
the
information.
So
we
make
this
separation,
this
separation
on
query
and
update
for
this
kind
of
task
for
the
application.
A
What
about
what
looks
like
a
query?
Inversion
card
so
when
I
want
to
query
the
admin
information
I'm,
an
admin
user
and
I
want
to
reach
with
my
information,
for
example,
my
name
that
our
storage
in
virgin
God
in
the
ledger
file.
Sorry,
so
the
query
function
is
called
and
then
we
look
at
for
the
second
argument,
the
argument
the
tell
which
function
I
want
to
prove
and,
like
you
see,
we
we
check.
If
it's
not
arguments,
and
then
we
run,
we
call
the
function
admin
in
the
admin
function.
A
We
first
check
if
the
user,
that
main
request
is
an
admin.
So
to
do
so,
we
use
CID
library
provided
by
fabric
in
order
to
check
in
the
certificates
of
the
user.
If
the,
if
is
an
admin
user
to
do
so,
which
the
argument
Vidal?
If
it's
not
me,
no,
not
and-
and
it
is
not
the
case-
we
sent
a
Nero
Nero
to
the
application
if
it's
not
the
case,
to
get
the
high
D
of
the
admin
user.
A
So
then
we
use
forget
from
nature,
so
you
you
got
an
example
of
how
to
use
this
function.
You
first
give
the
kind
of
object
we
want
to
retrieve.
So
in
this
case
is
the
admin
tip
objective.
Then
we
provide
the
admin
Heidi
and,
finally,
that
the
data
structures
that
will
receive
every
information
stored
in
the
ledger,
so
we
feel
it.
We
feel
we
feel
in
the
hand
main
structure
with
directly
with
function.
A
A
What
about
the
registration?
So
an
update
request
is
the
interesting
things
of
the
query.
Is,
is
the
same
so
we
check
the
argument
to
know
what
function
we
need
to
go
then,
in
the
function,
which
H
is
what
what
kind
of
actor
is
one
to
to
be
disturbance
in
the
chain
cut
in
the
ledger,
so
we
get
the
active
type
provided
in
the
strategy
case.
A
A
For
example,
there
is
no
identity
management,
so
the
library
CID
is
not
working
with
us
with
Maki
interface
and
also
there
is
no
consistency
in
transactions.
So
in
a
lot
of
case
is
not
really
useful.
You
can
test
all
your
card,
so
you
need
to
deploy
the
chain
code
and
then
perform
some
testing
yeah.
The
an
SDK
or
volley
commands
so
I
hope
that
you
understand.
A
That
is
not
very
easy
to
write
a
chain
code
you
can
take
a
warm
while
is
is,
if
you
want
to
test,
for
example,
hide
identity
management,
for
example,
is
not
very
easy
because
you
can't
use
the
maquis
interface.
So,
but
it's
you,
we
are
changeable.
We
use
an
automated
deployments
that
run
the
chain
code
on
simple
network
and
then
run
some
tests
using
an
sdk.
So
we
in
this
kind
of
way
of
according
we,
we
know
at
every
moment,
but
the
chain
part
we
will
deploy.
It
is
ok.
A
A
A
We
will
run
a
new
instance
of
SDK
and
if
the
user
asked
using
flag
on
the
click
which
raised
the
channel
and
installed,
and
some
and
instantiate
the
chain
code
which
encode
you
provided
in
the
chain
code
folders,
then
we
generally
register
some
user,
the
onion
one
and
two
consumer.
Every
information,
our
view
of
the
user
are
provided
in
the
main
data
and
finally,
we'll
run
the
web
server.
A
A
So
all
the
query
looks
like
from
the
application
size.
We
use
the
SDK
using
the
the
channel
science
to
make
you
fluent
in
recovery.
We
provide
the
chain
code.
Heidi.
In
how
case
is
we
use
my
channel?
So
you,
the
chain
code
ID
is
my
channel
is
a
general
for
sorry.
You
can
look
at
for
this
kind
of
information
in
the
main
doctor.
A
Also,
we
tell
which
function
we
need
to
to
query
so
invoke.
And
finally,
we
provide
some
arguments.
So
the
first
argument
of
the
query
will
be
the
query
because
in
the
chain
code
we
look
at
for
the
first
argument
to
know:
if
it's
a
query
or
an
advanced
and
finnaly,
we
happened
every
other
arguments
provided
in
the
query
function.
A
So
when
we
reach
with
the
result-
and
we
we
store
every
information
in
the
response-
objects
in
device
that
the
user
provides.
The
query
function
so
what's
looks
or
the
query
admin
so
we
saw
the
function
is
writen
in
the
chain
guard
and
what
about
the
application
side?
So
we
just
give
the
data
structure
of
hyman.
So,
like
you
see
the
model,
admin
use,
the
model
provided
in
the
chain
code
model
a
package,
so
we
use
exactly
the
same
data
structure
in
the
chain
code
and
in
the
application.
A
A
So
what
about
an
update
is
very
the
same.
The
same
things
is
like
the
cream,
but
in
this
case
before
we'd
run
query,
we
use
the
SDK
and
we
call
query
in
this
case
for
an
update.
We
call
the
execute
so
the
SDK
know
that
you
need
to
match
the
ordering
the
ordering
phase
in
addition
to
to
read,
but
maybe
four
so
it's
very
the
same.
We
call
the
invoke
function.
A
A
A
B
A
B
B
By
the
footer
on
the
English
of
any
languages,
but
you
can
add
for
management,
you
will
see
the
abroad
five
of
six
language
easier.
If
you
need
something
other
than
English
or
German
or
French
I
need
to
go
on
the
other.
We
need
to
escape
from
view
and
manage.
Instead
languages,
you
can
add
language.
You.
B
A
B
B
B
A
So
we
can
take
some
time
if
you
want.
If
you
have
difficulties,
you
have
questions
to
help
you
and
the
other
parts
with
you,
you
will
cut.
You
will
write
some
code
in
order
to
understand
all
all
walks,
because
I
I
talk
a
lot
and
I
pass
a
lot
of
time,
a
lot
of
time
on
on
some
kind
of
data
structure,
and
if
you
want
to
remind
to
to
understand
everything,
you
need
to
write
little
bits.
So
this
will
be
the
exercises
pass.
Just
after
the
coffee
break.